Stock plastic upper intake manifold boost limitations?

Rid3_FaM0uS · 03-13-2017, 01:14 PM

Quote:

Originally Posted by braydo25

Hey guys,

So long story short my Z shot a rod out of it's stock block last week. Car was running around 11psi of boost. One of the injectors started making some louder than usual noise that day. Didn't think much of it at first. First 2nd gear pull of the day I hear a lot of super loud clunking and the largest plume of white smoke out of the back of the car.. I managed to get the car towed and on my friends lift a few hours later just to find half of a rod sitting under the motor wedged into the front subframe.

Time for a built bottom end. With that, much more boost

I'm wondering though if anyone's had issues with the stock upper intake manifold dealing with boost pressure in the 15psi to 25psi range? Does the upper manifold begin to bulge, pop or split? Should I just bite the bullet and get an AAM manifold?

the injector was making noises? idk how you can hear that over the running engine. you can hardly hear an quality injector coil pulse even bench testing it in your hand. you sure it wasn't a pump failure? Aside from that, generally, rods are broken due to seized wrist pins(lack of oil pressure/viscosity).

back on topic though i daily 25psi with no issues(YET) and my high boost setting is slightly higher than thay. I will NOT however tell you this is in any way shape or form reliable of the manifold, or credible of what anyone else has done at these power levels furthermore. You must keep in mind there are only 10-15 "known" people at the most running those kinds of boost pressures on these cars, and several of which have made the RJM GT-R conversion(or some iteration of it).

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[FOR SALE] Stock upper and lower intake manifold	mrcox	Parts for sale (Private Classifieds)	2	07-21-2016 03:05 PM
[FOR SALE] OEM Upper Intake Manifold	Trilitheum	Parts for sale (Private Classifieds)	22	09-18-2015 10:31 AM
[FOR SALE] Upper Intake Manifold	Venom13132	Parts for sale (Private Classifieds)	9	08-12-2015 10:19 AM
[WTB] Upper and Lower Intake Manifold (Stock)	Venom13132	Parts for sale (Private Classifieds)	5	06-17-2015 09:20 AM
Upper Intake Manifold	DIGItonium	Forced Induction	10	12-03-2013 03:56 PM