Rotary Car Club - boosting a 4-port na

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sikest1

10-08-2009 06:13 PM

boosting a 4-port na

My engine was not built for turbo, but I was wondering how much boost I could safely put on it? I'm just unhappy with the power lag from 3k to 7k rpms

BigIslandSevens

10-08-2009 06:54 PM

5-7 psi is what I have seen run on N/A S4&5 engines.That is a "safe" #. I have seen others run 10+ also and not have issues. But They also had alot of fuel and ECU mods.

12arotary

10-08-2009 10:52 PM

5 if its a 12a

moremazda

10-09-2009 08:42 AM

One can not answer the "how much boost" question until one knows which turbo you are wanting to use. Which turbo you use depends on how much power you want.

RotaryProphet

10-09-2009 10:18 AM

I've run 16 PSI on a totally stock internal 12a motor during tuning, and ran 13.5 PSI on the same motor as a daily for months after that. It comes down to proper fuel and spark tuning, really.

PercentSevenC

10-09-2009 12:45 PM

Ran 9 PSI daily with a Camden supercharger with my old-school 13B. No problems.

sikest1

10-09-2009 07:13 PM

thanks

Quote:

Originally Posted by RotaryProphet (Post 99028)

I've run 16 PSI on a totally stock internal 12a motor during tuning, and ran 13.5 PSI on the same motor as a daily for months after that. It comes down to proper fuel and spark tuning, really.

the engine is a 4-port 13b. I have a T II setup available to me but I want to stay carb'd. Will the stock ignition cause a problem? I am a mechanic but don't know anything about turbo except it makes the car faster.

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