9A1 3.8 Throttle Body on 2.7??
#1
Burning Brakes
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Hi folks, does anyone on here know if the throttle body from a 3.8 9A1 (991) would fit on a 2.7 9A1 (981) and, if so would it offer any performance advantage? I have a spare throttle body from a 3.8 and wanted to see if i could use it on my 981 Cayman base. Asking this question also in Cayman forum. Any response is appreciated, thank you!
Dom
Dom
#4
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I don't know if such a large TB swap will work, either physically or electronically. That's really a question for a tuner company.
I've read many assertions from tuners that the exhaust is really the place to start if you want to increase flow through the engine. That means headers and low restriction cats.
I've read many assertions from tuners that the exhaust is really the place to start if you want to increase flow through the engine. That means headers and low restriction cats.
Last edited by Spokayman; 05-05-2017 at 02:37 AM. Reason: Correction
#5
Burning Brakes
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Appreciate the responses! To be clear, I didn't buy this part with any intention to connect it, rather it was a 'spare' from my 991 that I was wondering if I could use based on conversations that I have seen here before about larger throttle body sizes...(I'm a mechanical noob)...😀 Thanks!
Dom
Dom
#6
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IF you buy the IPD competition plenum for the 981 for the larger 82mm throttle body you can install that throttle body on the 2.7L motor. The issue is the center section; on the 3.4L and 2.7L cars the center section is built for the smaller 74mm throttle body.