Aight folks another question for you turbo freaks i just got my turbo n manifold to put on my gxl but i heve anotther question since im such a sick sob i want to go faster ad my buddy just happens to be building a GrandNational what i was wondering is will the stock T3T4 turbo off of the national fit on my turbo 2 manifold??

It won't, you would need a T3 manifold for your 13b.

so it would fit on a 93 manifold?>?

If you had a t3 manifold for a 93....

Exhaust manifolds are interchangable between the 2G and 3G turbo motors, right?

I was wondering that earlier, I'm not sure.... I assume they would be...

When we installed the HKS Cast T4 (FOR a S4 TII)Manifold on Reese's 13BRE, we had to slightly grind the lower ears of the manifold to get it to mount on the 13B-RE. JOhn

Why would you want to choke your engine's power with a T3/T4 turbo? T3's are SMALL...they should be left for Honda's. Rotary's have enough exhaust pulses to push a large T4 with a "small" exhaust housing like a P trim .84

Well yea, those ports are huge on the cosmos!

Assuming you are referring to 2nd gen (13BT engine) and 3rd gen. (13B-REW engine) No the exhaust ports on the 3rd gen are huge compared to the second gen.

The Intake ports are the ones that are different...with the FD being much larger than the FC, but the exhaust ports are identical in both FC and FD. The Cosmo exhaust ports are BABIES in comparison...

haha, a lot of misinformation here. I do recall seeing some side by side pictures fd/fc irons... and the fd intake ports were definately bigger..

Yeah they are...The primary's are almost the same size, but the FD secondary's are SIGNIFICANTLY larger...

From a RE video.



https://www.nopistons.com/~turboii/a...9ab2e46f18.jpg



https://www.nopistons.com/~turboii/a...641e9ac97b.jpg

Thanks Lee.I need the info.Its nice to know.