2.0L vs 2.3L
I was going 2.3 but they seem to have a lot of problems over time.
Pretty inline with what others are making on this dyno with the BBK on "decent" builds without porting other than the turbo.
On the real well thought-out builds and with more porting, etc the strongest I have seen so far is 367whp on 91 oct, and average is 34X-35Xwhp
On the real well thought-out builds and with more porting, etc the strongest I have seen so far is 367whp on 91 oct, and average is 34X-35Xwhp
Thx for the sweet review, almost makes me want to do the bottom-end....
Evolved Member
Joined: Oct 2002
Posts: 2,788
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More air 
At 24.5 psi a 2.3L engine is "consuming" about 15% more air than a 2.0L engine at same boost level. The turbo is spinning faster to achieve 24.5 psi on a 2.3L too. That's why i thnk the better comparison would have been "same air flow" instead of "same boost". The 2.3L would still have made more power as it will use less boost to achieve the same air flow which will enable it to run more timing on knock limitted fuel
At 24.5 psi a 2.3L engine is "consuming" about 15% more air than a 2.0L engine at same boost level. The turbo is spinning faster to achieve 24.5 psi on a 2.3L too. That's why i thnk the better comparison would have been "same air flow" instead of "same boost". The 2.3L would still have made more power as it will use less boost to achieve the same air flow which will enable it to run more timing on knock limitted fuel
Yep the added displacement seems like the only answer. That said, I don't get why peak boost didn't come in a lot sooner. So very strange.
Evolving Member
Joined: Sep 2007
Posts: 157
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From: Saint Louis, MO. USA
94AWD coupe said this is a good idea, if the tranny can handle the torque. I know the MR 6 speed is not as beefy as the 5 speed. Any thoughts on the effect of the 2.3 on the 6 speed? I am guessing road race applications with the 2.3 would put the most stress on the 6. Anyone running a 2.3 with a 6 have any info?
That's true. Typically between 300 and 500 rpm sooner peak boost when switching from 2.0 to 2.3
A boost plot would help, but from the torque graph it seems to achieve peak boost at exactly the same rpm, so very strange
