replacement intake manifold
#1
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replacement intake manifold
Is there no such thing as a replacement intake manifold for the RX-8?? I find it hard to believe this POS plastic oem version is the best anybody can do. After my engine replacement at 70k I've been having issues with vacum leaks and air to fuel ratios.....dealership seems to believe it is due to worn grumets on intake manifold. I think it has more to do with the manifold is junk! there has to be a better one on the market somewhere, but I can't seem to find it...........any help would be appreciated
#2
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Is there no such thing as a replacement intake manifold for the RX-8?? I find it hard to believe this POS plastic oem version is the best anybody can do. After my engine replacement at 70k I've been having issues with vacum leaks and air to fuel ratios.....dealership seems to believe it is due to worn grumets on intake manifold. I think it has more to do with the manifold is junk! there has to be a better one on the market somewhere, but I can't seem to find it...........any help would be appreciated
Last edited by Highway8; 09-11-2011 at 08:35 PM.
#3
BearBlasterExtraordinair!
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The stock intake mani is actually pretty good. Mazda did a lot of work on the engine, getting all the lengths of runners and diameters just right. The time it would take to make one that would be better would be ridiculous. If somebody did make one, it would probably be super expensive due to development time.
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The UIM does have seals, kind of like O-Rings on all the mating surfaces(In between the Throttle body, LIM, and if you have a 6 port in between the lower extension part of the UIM) and could be a source of a leak, not very likely though.
Like Highway8 said take some carb cleaner and spray it around your engine when your idle jumps you've found your leak.
Do you have an aftermarket intake? Is the VFAD removed? If so did you cap the VFAD nipple behind the throttle body on the UIM?
Like Highway8 said take some carb cleaner and spray it around your engine when your idle jumps you've found your leak.
Do you have an aftermarket intake? Is the VFAD removed? If so did you cap the VFAD nipple behind the throttle body on the UIM?
#8
Out of NYC
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Is there no such thing as a replacement intake manifold for the RX-8?? I find it hard to believe this POS plastic oem version is the best anybody can do. After my engine replacement at 70k I've been having issues with vacum leaks and air to fuel ratios.....dealership seems to believe it is due to worn grumets on intake manifold. I think it has more to do with the manifold is junk! there has to be a better one on the market somewhere, but I can't seem to find it...........any help would be appreciated
You could design another manifold but that also means you have to redesign the whole system, cuz the intake manifold is part of the puzzle, you change one part, you just gotta redesign everything else. and I doubt anybody can make another system that works so well at such wide RPM range.
There is ONE out there but they made it because they need it to fit their SC system to the car, NOT because the stock manifold is junk.
ok, move on. do some research b4 u spill ur next bs.
Last edited by nycgps; 09-11-2011 at 10:40 PM.
#10
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Be very careful when spraying flammable liquids (i.e. carb cleaner) around your engine. I have seen more than a few people start a fire by getting it on the exhaust manifold.
That being said, the above posters are right that it's an excellent tool for finding vacuum leaks. Just don't go crazy with it.
That being said, the above posters are right that it's an excellent tool for finding vacuum leaks. Just don't go crazy with it.
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