Intake plenum vs manifold reddit Does anyone know the difference between a plenum and an Intake Manifold they appear to be the same but I'm not for sure? Dec 6, 2008 · Tunnel rams and plenum chamber intake manifolds don't require as much cfm as each cylinder is able to draw from all exposed barrels of the carburetor - unlike the IR system. I've had like 6 different setups, currently have Injen that replaced the terrible Z1 intake, poor quality IMO, Best so far was Stillen with slight modifications. From my understanding, you wont see gains with the kinetix if you are not FI. The spacer is for stock intake manifolds only, I run it at the moment but I’m getting ready to remove it all together. The manifold is held on with studs and nuts on torque limiting spacers. Alright F-150 owners who have this generation. As well as gen 3 uses a 12:1 compression ratio compared to the 11:1 found in gen 1 and 2 As well as the displacement is 5. Might as well go CJ at that point if you're chasing top end. Intake manifolds have a plenum because that is a convenient was to have a throttle and air filtration. Nov 7, 2011 · The increased engine size should also help mitigate the large plenum intake's tendency to deaden throttle response. this article is an engineering driven write-up to help those who are hand-porting their plenums and don't want to spend on I've been thinking about making my first ever car mod, by buying a plenum spacer, as I've seen advised countless times on this subreddit. You'll need new gaskets, rtv, maybe some sealant for any intake bolts that go into the water jacket. It's designed to allow more air at a given rpm to extend the volume or length of the intake plenum. Hi guys, I am designing the intake system for this years vehicle. Seems to me the Mopar may have had water circulation under the plenum. 4" intake is down to 29 14mph. Dual exhaust conversion,p71 zip tube,70mm throttle body,pi intake manifold,p71 pcm tune, would the trickflow make it bog down Sep 30, 2009 · Intake Manifold V6 - 5AT vs. My 01 cracked and I replaced it with a new manifold that was all plastic except for an aluminum runner in the front. Remember the intake packaging rules regarding air intake components and the tires, roll hoop, and side impact shielding for low mounted parts. RBC intake manifolds come from the 06-11 Civic Si. New NGK plugs. I have to feather the pedal because it goes from idle to "way too much power" within barely any input. I had diagnostic codes P0420, P0108, P0028, P0026, P0300, P0302, P0171, P0172. The only difference is the head ports are a little bit smaller than the rb25det heads. Gm 3800 series II Random misfire/multiple misfire. Now, my question is, with this upgrade would it make sense to add a spacer to the plenum? Or just the less restriction manifold upgrade be fine. with a 3" cylindrical opening, this means a air speed of 50 25 miles per hour in the intake. 9 Magnums, you're going to want to do the plenum gasket underneath the intake. You can also have secondary pressure waves due to the size and shape of the plenum. porting the lower plenum (and the rest of the intake system) is critical to extracting NA power. The gen 3 uses a different intake manifold and CNC ported heads that flow much better. Is there any practical method of smoothing out the inside of the OEM intake manifold shall I decide to boost it? Dec 6, 2008 · Placement of the throttle blade(s) closer to the valve, or further away. Oh god. 23 votes, 20 comments. The pigtails are the most tedious part of the intake though. It's the carb and stuff on top that's more complicated. It is unlikely, but a different intake may allow the air to get to engine a bit easier. Currently have a junkyard efi 351w in the garage that I'm going to tear apart and get it over to the machine shop. The plenum is tuned to influence a specific rpm range in the power band. No tuning may be "needed" for this, but you're NOT getting any additional power without a tune on a stock turbo. 5L per revolution cyce at 100% VE at 7000rpm. PRB comes from the RSX Type-S. It’s more like of 6 runners into the engine, does anyone know if this could be used a cheap substitute for an upgrade if you go boost and don’t want to buy an expensive intake? RZCREW NA6 Airstream intake manifold 4-10hp gain over stock intake manifold with supporting mods like a tune and some cams an shit. To begin with, i come from doing the aero work for our team, so Im pretty familiar with cfd. 39 votes, 22 comments. I'll be testing the streetburner lower intake against a PI intake on a chassis dyno soon, and I will be posting my results everywhere. I own a Subaru 2006 Outback with 200k miles. 6 bolts 2 nuts and I also need torque specs on the studs that screw into the lower manifold. The use of rubber bushings or hose is acceptable for creating and sealing air passages, but is not considered a structural attachment. The factory z28 intake was close to it. It would probably increase power and torque on a dyno but I don’t see it making a significant impact. On top of that, the lower manifold loops behind the pushrods, and we didn't have the tools to do that. D 2006, war was beginning. 951. Mass actually dropped a decent amount and reliability went way up. It's just another cheap feel good mod like a cai that people claim makes their car faster when it doesn't do much at all for power and economy. Although many factors control this quotient, none are more important than the intake manifold, specifically the shared plenum style used today. While you're at it inspect your timing cover gasket and replace that if you need to. them. got a 1999 k1500, oil has coolant in it, pretty milky, i filled the radiator full of coolant and the next day it was down again, was told by multiple people it is the intake manifold gasket and i’ve been looking it up and it sounds like thats what it could be because it runs good and doesn’t smoke out the exhaust and it only has 174,000 miles it had the 5. Watch out for vacuum accessories that port off the intake Im having stupid issues with a misfire. This is for a single cylinder KMT500 engine. The longer/bigger the intake/manifold system is, the less good velocity stacks do. Or in front of a plenum, or after it can accomplish the same things, or different ones. there are many problem points of the original design which can be reworked for better throttle response and top end; however, over-porting will cause performance loss. reReddit: Top posts of March 2022. RBC will not fit. the more volume , the more equilized pressure between runners 1MZ-FE in a Toyota Camry. Modern motorcycles use IR induction, and still use a tuned plenum (airbox) in front of each throttle. The "theory" is that with these spacers, it increases the intake runner length allowing more air into the plenum as well as smoothing the air charge before entering the cylinder. I plan on getting it this nice kinetix upgrade. First are we talking about the manifold of the plenum? The plenum must come off the access the injectors. M50 intake manifold installed. The plenum chamber helps manage airflow, while the intake manifold optimizes air distribution for engine performance. Intake temps are only about 40-50C deg. Though similar, I think the Strip Dominator had a better plenum and runners than the Mopar. Thanks, imo the stock plenum thats metal looks cooler than the plastic kinetix box, and if they perform nearly identical NA ill just get the spacer and save up for the actual kinetix velocity manifold that's $800+. One cause could be a vacuum leak on the intake manifold plenum My initial thought was that the eBay manifold might have an improved performance due to the interior surfaces being smooth where as the OEM cast manifold would cause more air turbulence. If I recall correctly, the intake manifolds were an issue on the interceptors from 96 to 01. The 350 manifold trades far too much down low to gain so little up top. But, it is a longer runner manifold with a smaller plenum. The plenum acts as the “base” for the pressure wave to act on. that highly transient flow is the reason the restrictor plays such a huge role. For some reason, all the research I'm doing is saying that the manifold for this generation F-150 is obsolete, and that 2018-2020 manifolds will work on it without any problems while others say I need new wiring for the sensors. Ford made the whole manifold plastic and that compromised the thermostat housing. If your main goal is to get back to a spread bore intake then go for it. The mighty Celica reached the end of its reproductive cycle and its population began a gradual but ever increasing decline. The coolant line running to the TB heats up the intake air and robs you a little bit of power when it’s hot. The RBC outperforms the PRB. 1JZ plenum to a 2JZ head (cant find a 2jz The stock PI intake with some mild cams and a bigger TB/plenum combo would likely help you out. The injectors seat into the manifold. After a new MAF and MAP sensor and a smoke test, we found that there was a leak in the intake manifold gasket. Locked post. Essentially, certain shapes in the runner can cause pressure/temperature phenomenon across the volume of the intake manifold that force the fuel to become unsuspended from the mixture and cause issues. a plenum job is to spread the velocity of intake air and stabilize pressure. Can I swap the intake manifold on my 07 Marquis with the police interceptor one to get more horsepower? The plain performer is a dog of an intake. Careful snipping and surgical precision in laying the manifold back down led to no leaks. When browsing Tarmac Sportz, I spotted you can actually get a whole Intake Manifold for an extra ~£100 and the description sounds great, better thermals, volume etc. My current plans are making first pieces from pla to test fit everything then move on making the real pieces from 3dktop filament and reinforce the part that are touching the head with fiberglass/carbonfiber. Reddit . Here are some examples of different vehicle types and how they utilize these components: Ive been playing with a idea of 3d printing a intake manifold and supercharger tubes for my track day car . ITBs w/o a plenum are specially useful when you have a camshaft profile with a lot of overlap because you eliminate communication between the runners so you get a smoother engine at lower speeds(no brap brap brap while idling), which means better range, and you also can tune it properly for the cam with different speed stacks and When I had mine, I didn’t tune my car until way later and didn’t have any issues. Looking at a VQ found inside a maxima they have a different intake manifold instead of the plenum that looks like one of the kinetix ones. It's a shame no one makes an aluminum intake manifold for the 5. I think it just barely clears the hood too. - Extremely sharp throttle response as the volume between intake valve and throttle plate is minimal. Old vs new intake manifold for Mk6. 5" center and 4. RZCREW NA6 Airstream intake manifold 4-10hp gain over stock intake manifold with supporting mods like a tune and some cams an shit. Intake Manifold: The stock Pathfinder intake manifold has always been a popular upgrade. Oct 4, 2024 · In modern automobiles, the plenum is a crucial component of the engine’s air intake system. of. $$$ vs return plus I push 294 at the wheels from a DE on a mustang Dyno. Thr main difference come into play with the way air acts vs an air fuel mixture. 7 vortec. Its a dual plenum system that equalizes airflow across the plenum in a diffuser setup unlike the one in the OP where all cylinders would have equal access to air in the plenum from one end. Hell it even guarantees gains on the auto 1. = more air = more power is the idea When someone says “it has heads” and they’re talking about a V8 engine they most likely mean it’s been fitted with aftermarket cylinder heads. O engine had a different timing pattern and the upper intake plenum exited on the passenger side. I’ve been reading posts with mixed feelings about the GT 350 saying it doesn’t really do much since the stock mani is stupid good. Upper, mid, and lower. Intake manifold still see full boost at 75% throttle while 4% is too much to keep the car at anything below 20 mph. 0 and its definitely down on power for towing, so decided to do a 351w swap. If it doesn't, then it MAY be the spark plugs. 6’s despite the cams being diff The inside of the manifold is all sublime as well. So you can focus on timing it correctly and torquing everything to spec on your way out. The H. You also need to consider where the exhaust is leaving the vehicle and where the throttle and air intake will mount, as the plenum needs to avoid the exhaust and extend to pick up the throttle and Gains won't lead to peak numbers but may lead to a more evenly balanced power curve but it's main benefits come with forced induction. There is a metal plate that is bolted to The Aluminum Intake. Thanks in… Maybe longer. Going to 3d scan and increase port size on my single turbo audi b5 s4 manifold. Those gaskets are a part of that job. The simple solution is just to get them machined a bit bigger if you care about the extra airflow, which I will do. "This intake design will hurt the low-end torque a little bit, but not as much Does anybody have torque specs for all them miscelaneous pieces on the bottom of the intake manifold collector? The drawings I'm finding have specs for major pieces (throttle body, main install bolts, etc, but not for the IACV-AAC valve assembly or the coolant lines underneath. Start by removing any electrical connections and then move onto hoses. I’m being told the plenum for my intake manifold is damaged and needs to be replaced. Toyota calls it a intake surge tank. any advice would be For #3 - the engine's appetite for air won't change. Old threads on ClubRSX say that PRB will fit, but you will need kpro to tune it. While the bell of a VS can give some very small gains, the VS's main function is to tune the intake/manifold. You could always pay to have the lower intake and heads port and polished. Is there no retrofit or aftermarket plenum available? I’m unknowledgeable as far as vehicles go so the ones I search up I’m unsure if it will work. I am now going to be working with powertrain systems more and I was wondering, whats the best approach to simulating an intake plenum? Ive read a few papers and there seem to be two camps - steady state and transient sims. Oct 24, 2024 · What is the difference between a plenum chamber and an intake manifold? The plenum chamber is a component that distributes air to the intake manifold, which then directs the air into the engine cylinders. I was thinking about swapping out my 22 stock intake manifold for a GT350 intake manifold, throttle body plenum to 87mm compared to the 83mm and the CAI. I have a 2004 DE currently with plenum spacer, stainless catback, stock airbox with HKS super filter and an uprev tune and am looking at potential bolt ons for a little bit more power. 75" outer. Any help on which equations are trust worthy? Codes don't "show" that you have bad spark plugs or coils or intake manifold gasket. I'm mostly concerned with the IACV-AAC valve assembly. Aug 22, 2014 · The runners on that intake are roughly 5. So, we paid a certified Subaru mechanic to install a new intake manifold gasket kit. 25K subscribers in the BMWE36 community. It's been leaking coolant and leaked into the 4th cylinder causing a misfire. This is a struggle for many teams. That intake was an air gap style, where the older Holley Strip Dominator wasn't. Really it's hard to beat the PI if you like low end. I just replaced the spark plug and cleaned all the coolant out and the engine is running fine now. The stock IM is reputedly good for at least 450+BHP and if you want to make good on that upgraded "runner capacity" on the stock turbo, you're going to need to tweak the AVCS and timing tables anyways with - wait for it - a tune! I often see people using conversion kits for the VR38 Manifold (GT-R) into the HR engine, and I see many people and forums saying its actually overall worse even if you turbo to use the GT-R one as it just doesn't have enough air flow and isn't a big enough capacity manifold to compensate the reasoning of converting the stock to the VR38. Some setups are/were cooler than others like the Lehmann intake that was used in the 90s and 2000s on everything from WRC cars to the Audi LMP1 cars. O an extra 60-70 HP. 6MT Jump to Latest 8. Follow torque steps and you'll have to torque it again after driving it and heating everyone up. From the shape on the interior Venturi stacks and the overall shape of the end tanks, if you have FI it will allow for more volumetric air to reach the front two cylinder banks… on an NA car, the oe plenum is slightly tapered at the front vs the rear and it’s the same issue… however if you add a simple spacer, you get more power simply by adding more airflow and leaning out the mixture. I have never seen the Indy intake for a W2 in person. Anyone have experience with the motordyne mrev2 lower plenum and 5/16 spacer? Would you feel the difference on a 06 DE drastically or is it negligible like an intake? Share Add a Comment Reinstalling my intake plenum on my hr z and I'm wondering what the torque specs for bolts are. The Stillen trumps my Injen, only reason I got it was I'm now on the Kinetix Velocity manifold, so they both set the power higher, figure might as well. 4 but Dorman. The problem I'm having is there seems to be a large variety of different, conflicting calculations for calculating runner length and plenum volumes. Oct 24, 2024 · Vehicles Utilizing Plenum Chambers and Intake Manifolds Plenum chambers and intake manifolds are essential components found in a wide range of vehicles, from everyday sedans to high-performance sports cars. Honda has their own too. Nov 17, 2018 · The V-Style, Shared Plenum Intake Manifold. If it looks good, I would just leave it and replace the intake along with the plenum Watched the youtubes, decided to get new coils x 2 for passenger side cylinders 1 & 3 (should have gotten 3, as cylinder 5 would be hard to get out with the manifold on). It makes a noticeable difference from 4k to 6800k that's for sure. 5K views 28 replies 9 participants last post by propete Oct 4, 2009 I would guess that you have a bad intake valve seal for the #2 cylinder judging by where the intake exploded. I have a plenum spacer and wouldn't do kinetix unless I was gonna boost. Stuff your intake right away. The term “plenum” specifically refers to the space above the throttle body within the intake manifold. PI heads and intake will basically swap right on to a non-PI engine, and it will then have higher compression than a PI engine. Jun 22, 2021 · 1987 - 1996 F150 & Larger F-Series Trucks - 351W intake manifold options - So i have a 95 f150 that has a 5. Intake Manifold – The intake manifold must be securely attached to the engine block or cylinder head with brackets and mechanical fasteners. reReddit: Top posts of Factory ported plenum vs trickflow . Upgrading my intake manifold on my 04' g35. I have a P2007 code, intake manifold runner is stuck closed. Another common upgrade is called a "gutted" plenum, whereby the intake manifold top is cut off, everything inside is ground out, and then the top is welded back on. In A. Remember the plenum is aluminum and will strip super easy. Before firing up the parts cannon, swap the coils with another cylinder and see if the misfire follows the coil. Those metal intake gasket things are 90 bucks for the set at NAPA (the only auto parts store in 50 miles) and not sold piecemeal. The only easily noticeable physical difference between a PI Mustang engine and a PI Panther engine is that the intake plenum is flipped around (Mustang air intake is on the passenger side, Panther is on the driver). 2" on the center ones and 7" on the outers. Nissan calls there's something else, while Mazda and Ford each have something different from these where they're referred to runner control valves. It looks more sudden than a long term failure judging by the extent of damage to the intake manifold. On those 5. Good manifold/plenum design can serve to smooth out the flow, but not entirely. The rev up doesn’t really gain from adding a spacer, the most it does it allows the DE to breathe a little bit better but that issue was solved with the rev up intake. summary. Three intake manifolds. And the intake gaskets which again, RockAuto had and was cheaper. I should know this, but someone explain why Ford, and all others made a plastic intake manifold? Is it due to electrolysis, transfer and clogging of ports? You'd think with enough ground straps, and coolant/distilled water, this shouldn't even be an issue. Rpm or the step up to the rpm air gap is the best of both worlds. Eager to see what the tune does for it I'm looking for a replacement intake manifold bolt for a 2009 ford escape xlt 3. If it does, the coil is bad. Don't know the exact specs on the other manifold, just that the csa at entry is 4. Sounds like you have a base model RSX. As stated earlier, for maximum power to be realized, all cylinders of the engine must do the same work, or produce the same power. Three. I'm going to be replacing some coils and spark plugs and need to take apart the intake manifold and last time I had it apart I noticed a broken bolt but couldn't remove it and just used silicone stuff (I used the correct stuff just don't know the name) and this time I have it apart I wanna drill out this bolt GT350 manifold is most definitely not better than the 18+ manifold. Just waiting on the Dinan intake and I'm gonna get a tune from Greg at Bimmers r us in St Louis. I have figured it out, a rb25det neo intake manifold will fit 100% onto a rb25de head. 0l. Plenum/ upper intake manifold gasket material Hey y’all! I recently Got a kinetix plenum and put a metal paper plenum gasket on, had a slight vaccine leak after tightening all bolts, was wondering if a thicker gasket would help! Looks like the performer 2101 would be a good upgrade from a factory style intake in my opinion. I helped a friend do the intake manifold gaskets on his '86 GT to fix an oil leak. It looks like you will need to cut and drill into it so the gaskets all line up. My second guess would be the timing jumped but that wouldn't be localized to one side of the manifold as every valve would be off. 0 H. This subreddit is a safe haven for all things E36. If you really want to 3D print an intake, find a sponsor who can print it from a strong SLA/SLS resin. Anyone have a part number for the gasket that goes in between the upper and lower half of the intake manifold for a v8? Having no luck. 37K subscribers in the E30 community. Also designed so you can use a big ass throttle body if you want. If they were mounted mani->TB->MAF->VS, without all the duct work, it might do some good; on a modified factory setup, not so much. A turbo's compressor on the other hand Even an amazing intake/exhaust design is useless if you can't tune the engine well (on a dyno). However, and having said that, gains on the dyno aren't always going to result in gains on the track. Nov 12, 2023 · I've found that to be true testing spacers on most single carb intakes but I think you're pretty much always going to see gains on an equal length runner intake with a large common plenum. Replacing Intake Manifold gasket, looking for tips and tricks 05 Grand Prix Solved I'm typically a brake and fluids guy but my 05 Grand Prix (138k miles) has an exterior leak in the intake manifold so I'm going to just replace it before it becomes an interior one after I got a few prices quoted. The codes indicate you have misfires of those two cylinders. It serves as a pressure chamber that evenly distributes air to the cylinders, essential for the engine’s performance. reReddit: Top posts of March 21, 2022. If you can, while you have the plenum and throttle body off, do the coolant line re-rout/delete that goes to the throttle body. This precludes the use of hose clamps, plastic ties, or safety wires. The plenum is held on with long Allen bolts going through the center. 3. All high performance NA engines are still using a plenum, specifically because intake pulses in a well designed plenum can force air into the cylinder more efficiently than individual velocity stacks. Show off your latest projects, ask…. But it's on the bottom. Lower intake may be able to get a different manifold, but the upper couldn't if it exits in a different direction. And for the torque intake the torque 289 for small ford's is a great intake and the torque 2 has been a decent intake for a pretty much stock chevy 350. So my intake manifold has a crack right where the upper radiator hose connects. - Very good flow and potentially better power output - More consistent air intake therefore fueling between cylinders - Easy to tune intake trumpet length to your exact requirement depending on manufacturer availability of trumpets Cons: The manifold is pretty easy. I’m also being told that there’s no OEM parts available and the entire thing will have to be swapped. Ended up at a local NAPA that had the cylinder 5 Hitachi coil for $20 more than RockAuto. People usually want to take both parts of the intake out at the same time (intake manifold & plenum), but it’s so much easier to just remove the plenum and then remove the manifold. Edit: in the recent past, we went from a fancy SLA (or SLS I can't remember) printed plenum to a cheap welded aluminum plenum. I came across both the Kinetix plenum (pictured) and the Kinetix intake manifold. The spacer will add a little, but will really come together when paired with a big bore throttle body and intake, headers, test pipes, exhaust, and a tune. 035L compared to the gen 1 and 2 of 4. Usually will net a 5. that's 410L 205L of air per second. More likely, the people who designed the replacement intake had fewer resources than the car's original designers, and performance will be reduced. zdqeh wcxv arlbky okjqv wijkocg xvyub gobf rhkiav nix njqjmx