new custom inatake mani watcha think

[sil80forme]

CATIA? i dont understand

[jrmiller84]

Was the cost of the machinist and your time less than the cost of just buying a nice Greddy (or other) intake plenum? I'm all for DIY but don't sacrifice your engine or funds when it could be done for about the same (maybe) with a much nicer/safer/efficient outcome. Good work either way, just be careful.

[kandyflip445]

Originally Posted by jrmiller84

Was the cost of the machinist and your time less than the cost of just buying a nice Greddy (or other) intake plenum? I'm all for DIY but don't sacrifice your engine or funds when it could be done for about the same (maybe) with a much nicer/safer/efficient outcome. Good work either way, just be careful.

I thought Greddy only made a intake manifold for the SR.

Originally Posted by projectdrifter

the manifold design would be nice if u utalized the stock runners. nissan had designed the runners from factory to optimize atomization of the air going into the intake tracks. velocity stacks might have helped out as well. yes your car does drive/respond diffrent with the new setup. i have driven the car with stock manifold and the modded manifold he has on now. the rsponse has changed but seat of the pants dyno results are quite bias.

Shouldn't atomization be primarily be handled by the design of the injector? I know the slight rough finish on the inside of intake runners is thought to help with atomization but how much does it really effect? I would imagine that it would primarily help with preventing detonation because of the air/fuel mix being more evenly mixed when it enters the combustion chamber.



Did you dyno the car before installing the manifold? If you didn't it would be nice if you installed the stock manifold and ran that on a dyno and then do the new manifold on the dyno to have a comparison and be able to see where you made/lost power and what not.