Nissan 370Z Forum - View Single Post - Stock plastic upper intake manifold boost limitations?

braydo25 · 03-10-2017, 01:23 AM

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?

03-10-2017, 01:23 AM	#1 (permalink)
braydo25 Base Member Join Date: Apr 2012 Location: Tacoma Posts: 67 Drives: Nismo z34 Rep Power: 13	Stock plastic upper intake manifold boost limitations? 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? Last edited by braydo25; 03-10-2017 at 01:26 AM.