You are here:

Auto Racing/turbo charging a carburated engine.

Advertisement

Expert: - 3/13/2008


Question
I'm building a car for road racing and was wondering if the compresson ratio matters when adding a turbo. The motor is a stroked 350.

Answer
 Yes !

Basically anything over about an 8.0:1 CR will cause you serious reliability problems. Forged pistons will stand it for a while but not forever.

I don't know of any lower level road racing venue that still allows turbo charging .  SCCA doesn't

Anyhow, Good luck

Dan Liddy
Sarasota, Florida

Auto Racing

All Answers

Answers by Expert:

Ask Experts

Volunteer

Dan Liddy

Expertise

Anything concerning race cars, 20 years competition experience, Senior Competition Driver Instructor , car builder, mechanic, welding, fabrication, tuning , engine modifications, set up, suspension design. Specializing in Datsun/Nissan products. Please submit questions about RACE CARS ONLY. No street cars, no video game scenarios Thank you.

Experience

I have been racing for 20 years, I have been the Central Florida SCCA Regional Championship points for 5 years running, and won the championship in my class 2 times. During my first start in the 60's I won many solo awards and the State Championship Drags. I serve as a senior instructor for SCCA, and have taught in Mercedes AMG events at Daytona, and Dodge Viper Days at Sebring International. I have been in the thick of the competition for all of my career. At one time or another I have driven race cars at speeds nearing 195 MPH. It's quite a ride !

©2012 About.com, a part of The New York Times Company. All rights reserved.