Hi Guys,

I've noticed there are a fair number of people with boosted 2.2 ecotecs running the standard 10:1 compression ratio. Is there any danger associated with this - pre-ignition being my biggest concern?

Ta, Paul.

If set-up correctly No. Keep in mind anytime you do any performance mods to any car, motor, there is always a chance you could mess soemthing up.



FU Tuning

Quote:

If set-up correctly No. Keep in mind anytime you do any performance mods to any car, motor, there is always a chance you could mess soemthing up.

Is there anything in specific that you have to be careful with regarding this high static compression ratio and boost?

I understand that reducing compression allows for more fuel and air to be run without detonation; can retarding the timing achieve the same result safely?

Cheers, Paul.

vxer wrote:

Quote:

If set-up correctly No. Keep in mind anytime you do any performance mods to any car, motor, there is always a chance you could mess soemthing up.

Is there anything in specific that you have to be careful with regarding this high static compression ratio and boost?

I understand that reducing compression allows for more fuel and air to be run without detonation; can retarding the timing achieve the same result safely?

Cheers, Paul.

You can retard the timing to help, but that raises EGT's. I would suggest doing research on here. There is plenty of people running the ecotecs with boost. As long as you set-up with plenty of fuel, look for knock retard (which it appears the ecotec does not create knock as easy as the 2.4's.



FU Tuning

These are the ones i've got 8.9:1 for the price it was better for me to just go this route, i needed forged internals anyway. No headaches and no worries, check into them.

http://www.the-race-shop.com/catalog/index.php?main_page=product_info&products_id=36