How was the torque from 2000 RPMs on up for you? Would you mind posting your TQ dyno graph & req'd mods?

Definitely going to get a stroker - not sure whether to keep a stock turbo, go green, or go red.

Yes, I've searched and I've seen a graph of the stock turbo on a stroker. I dig that low end torque. I'm OK with the high end dropping off if I'm still beating the stock TQ number @ 7000 RPMs.

Secondary design goal: > 250 ft lbs AWTQ from 2400 RPM to 7000 RPM

(Primary goal: safety, reliability, durability, NV emissions compliance)

 

I have a Buschur 2.3L STroker w/FP red being done this month.. The car previosuly made 523whp @ 27psi of boost on E-85 on stock motor.. Ill let you know what happens with the BR motor and more boooost..

Mike

 

my friend has a 2.3 liter green that he is upgrading to the red, should be done eventually and im sure he will post up results.

 

I had one in my subscribed threads, but I think I deleted once I stopped shopping for a Red. Let me see if I can find it for you

 

here you go:


https://www.evolutionm.net/forums/sh...d.php?t=362803

 

I will, but it won;t be for 6 months or so

 

I have this setup, but mine isn't tuned or hasn't been dynoed yet, it'll be a couple weeks, but after I dyno it i'll post the results..

-Billy M.

 

By the way, just with my stroker minus the cams and turbo mine 290whp and 300ft lbs (at 3000 rpms), it was REALLY torquey. These numbers were on a DynoDynamics dyno also, so they read a little low.

Good luck with the build man!

-Billy M.

 

Thanks, Billy!

 

Ahh - just what I was looking for; thank you!

I'd like the torque to start lower so maybe I'll stick w/ the stock turbo.

Then again, 500 ft-lbs is pretty darn attractive, even if it's at 5K.

 

It makes 350 ft-lbs at 3700 RPM, like a stockish turbo would - but keeps climbing. I think it's pretty hard to find a turbo big enough to make 500 ft-lb and have it do it at 3500 RPM's.

I'm hoping the GT3076 I'm slapping on my 2.3L build will do this type of peak torque, but hold it to redline and not fall off.

 

Yeah - that's the holy grail that I'm still looking for. The SRT-4 engine (2.4L turbo) made 250 ft lbs from 2400 RPM to 5500 RPM, which was really nice (for a stock engine).

I figure if I can get 250 ft lbs at 2400 RPM and quickly ramp up to at least 350 ft-lbs, sustaining it until redline's the only challenge.

The 911 TT uses variable vane geometry on their turbos (they also have 3.6L engines) but their torque is as wide and flat as Kansas.

I don't suppose there are any variable geometry turbos available for the 4G63, are there?

 

Donīt write off the Red based on that one particular car. The FP 5R exhaust cam may not be the optimal choice for maximizing low end torque. Also, maybe the wastegate preload hadnīt been optimized for quick turbine spoolup.

A different set of cams and 19-20 PSI of preload would probably move that torque curve way over to the left. It seems kind of restrictive to try to push the exhaust flow from 2300 c.c.īs through the stock turboīs dinky, little hotside.

 

Understood - thanks for the feedback.

 

I liked the torque at 3k RPM's on the stock turbo, it was very agressive down low, however, I just was tired of the 300 whp range so I went with the Red..

Anyways.. Let me know what you decide to do.

-Billy M.