Turbo

[95civiclopez]

Ok i have a question whats better for a turbo a high compression or low compression motor

 

[s_crowley 17]

You have alot to learn before putting a turbo in your car, its not that easy.

http://beesandgoats.com/boostfaq/g2icturbo.html

A lower compression motor will be easier to tune than a higher compression motor on boost.

 

[95civiclopez]

well the car i have now is boosted allready and i had 2 install the turbo on it. I just was not sure because ive heard both was on it that it better 2 have a high compressin moror 4 boost and ive also heard that it a better to have a low compression that why i was wantin people 2 tell me why it was better to have it whatever way they thing is the best

 

[95civiclopez]

that web site that is in ur reply is the same turbo im putin on my car the exact say T3 T4 turbonetics

 

[2NRSTV]

Low Compression is best. The Turbo takes the place of raising compression. If you're not planning on low boost, just keep it stock compression.
If you have a High Compression Engine and Boost too high, you're liable to cause Pre-ignition caused by the heat of Compressing so much air/fuel.

 

[got traction]

depending on the motor and what you plan on doing with it boost wise, a lower compression is usually better. But then again some of the highest horsepower turbo honda's are in the 10.5:1 compression ratio range

 

[Autoworks]

depending on the motor and what you plan on doing with it boost wise, a lower compression is usually better. But then again some of the highest horsepower turbo honda's are in the 10.5:1 compression ratio range

Agreed.
Typically, lower CR is the norm and is what is advised. 8.5-9:1 is typical.

You'll see the BIG HP (I don't mean big as in 500-600 either) are running 10.5-12.0:1 blocks...but those are purpose built...wouldn't advise it in this scenario by any means.