Compression Question
 

At what compression range is it safe to boost? Running stock A6 and want to know what to swap the pistons to in order to safely boost. Looking to boost under 10 have the turbo info and what not now need engine prep info. Help please.

Re: Compression Question
 

It depends on the turbo dumb ----. Read more before asking questions that have been asked a zillion times on every car forum known to man ::)

Re: Compression Question
 

commonly it's around 10:1 that problems arise, but as stated bluntly :6 above there's more to it than just that

Re: Compression Question
 

if you only plan on 10psi the stock a6 block should hold fine just do a compression test and leakdown test to make sure its in good condition and then pop on your turbo

then be sure to tune it dont use a fmu or afc hack or any ghetto ---- like that

Re: Compression Question
 

I've run (and will run again) 10.5:1 c/r on a stock block b16a at 14psi and higher before and never had any issues...it's all in the tuning. :6

Re: Compression Question
 

do you made a changing in cooling system ?

Re: Compression Question
 

Nope, other than going from my EF's full-size radiator down to an EG half-rad. I do use a product called water-wetter in the cooling system though, it breaks the surface tension of the coolant to aid in heat transfer.

Re: Compression Question
 

Thankx for the input.

Re: Compression Question
 

great work. did you went dyno befor ?

Re: Compression Question
 

damn thats high compression, im running 8.5:1 currently with plans to drop it to 8.1:1

but ive heard of guys running 12:1 properly tuned without a issue...

if you want to drop it just get some copper fat ass headgaskets, its the cheaper way, other than than you can bore out the combustion chamber on the head/s or use lower comp pistons...

10:1 is a tad high id be aiming for ATLEAST 9:1 to avoid detonation