Rotary Development

NoDOHC · 10-31-2009, 11:36 PM

I'll leave this up for a while, but I think I had best avoid anything involving a turbo at this point in my rotary learning curve, I talked to my rotary-building friends (who got me into them) and my 13.0:1 AFR idea was heavily ridiculed. (I still want to try it though). I was also told that 500 WHp with a GT37 is possible but not easy.

Basically, Turbocharging a gasoline engine is a whole new world for me. I have been made to know that if I want to keep my engine intact, I need to stay NA. I originally built this engine to blow up, but now that it has promise of making power, I am thinking that I want to keep it running.

They had also heard rumors of a 275 WHp streetported 4-port NA build using a custom intake manifold, but I still can't find it on the internet.

I appreciate C. Ludwig questioning my overly-optimistic hopes, as that raised a question in my mind which prompted me to run the idea past my friends.

classicauto · 11-11-2009, 12:16 PM

Quote:

Originally Posted by NoDOHC

They had also heard rumors of a 275 WHp streetported 4-port NA build using a custom intake manifold, but I still can't find it on the internet.

Wives tale. Most of the full bridge, 10K rpm engines in local race cars around here are only dipping 280ish to the hubs. Some halfie's landing anywhere between 220 and 250.

A custom intake with less porting (and presumabley revs) won't net an extra 40% increase in peak power, assuming 200 to be the practical peak benchmark for a well done streetported 4 port.

If you really wanted to do something experimental, try my next project.

300-350whp max, small turbo (T04-E 57 trim likely.....) with straight water AI.......................................on 87 octane. I don't care what type of block you use, but has to be low grade fuel. That's what I'm planning to do with my recently acquired FB, one day.......one day.

Turbo engines can be reliable. Certainly not as "bullet proof" (ie. as low powered) as an N/A, but don't think you can't just because people have problems....its no reason to stay under the 300whp mark

View Poll Results: What to do over the winter?
GT37	0	0%
TT	2	22.22%
Semi-PP	2	22.22%
6-port	0	0%
4-port	5	55.56%
Voters: 9. You may not vote on this poll

10-31-2009, 11:36 PM	#1
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 17	I'll leave this up for a while, but I think I had best avoid anything involving a turbo at this point in my rotary learning curve, I talked to my rotary-building friends (who got me into them) and my 13.0:1 AFR idea was heavily ridiculed. (I still want to try it though). I was also told that 500 WHp with a GT37 is possible but not easy. Basically, Turbocharging a gasoline engine is a whole new world for me. I have been made to know that if I want to keep my engine intact, I need to stay NA. I originally built this engine to blow up, but now that it has promise of making power, I am thinking that I want to keep it running. They had also heard rumors of a 275 WHp streetported 4-port NA build using a custom intake manifold, but I still can't find it on the internet. I appreciate C. Ludwig questioning my overly-optimistic hopes, as that raised a question in my mind which prompted me to run the idea past my friends. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)