So I've always been wondering... my TSX has a 3 inch stroke which by rule of thumb should be good upwards to 8k RPM (engine has 290k miles and I drive it regularly through the mid 7k RPM with no worry in the world). Factors I'm considering is somewhere I read that you don't want to exceed 4000' / minute of piston travel to avoid frying the rings (and rods?).

So I'm a bit confused on how the G37 gets away with a 7600 limiter with the larger 3.38" stroke. This seems a bit high to me, especially in comparison to the G35 with a slightly shorter stroke and the 35 still has an earlier limiter.

So when I was doing my reading when I started considering buying a G, they say the VQ37hr was built to withstand these revolutions. Can anybody clarify what was done to build it up, and what could use improvement if FI was used (besides lower compression)

I really love how it drives like my TSX (but faster obviously), and how it just has such linear acceleration as the RPM's climb.

And there's guys out there who say they shift at 8k RPM, which bewilders me. Everything I know about engines (albeit not that much) totally goes against how Ive heard these cars are driven.

I'd love to put on bolt ons and have it tuned, but this is also a DD and very new to me so I don't want to be ruining the engine anytime too soon.

 

Are you talking about the k24 engine or j35 engine in the tsx?

 

I'm not going to comment on the rest of your post cause I'm no engine builder. However, this motor is pretty stout. I wouldn't think twice about doing bolt-ons and a tune. I recommend Stillen G3 or Z1 MAF tubes, HFCs and CBE. If you have the option Ecutek.


There are a bunch of people pushing 500whp turbo car with no issues. You'll be fine NA unless your tuner is an idiot.

 

TSX is the K24.


Definitely not shying away from getting uprev/ecutek, Z1 manifolds, high flow cats, (maybe long tube headers---sounds like people are quite pessimistic about their gains). Need to get a baseline dyno done first though.


It's the tune that I worry about. With added power up top and a higher rev limit and ideal shift point, I know I would be driving the car even harder than now. Guess I'll just have to learn from experience

 

They come with v6 also.

http://m.caranddriver.com/reviews/20...ad-test-review

But get a good tuner. They're many out there that can get the job done.

 

I have the Z1 headers and did a baseline before and after dyno and picked up 16whp and 3wtq..

https://www.myg37.com/forums/engine-...er-thread.html

 

Don't touch the rev limiter. These oil pumps can let go if you push it higher. Leave it a 7,500rpms