Currently im running 26 psi on alky and 93 octane on stock 2.0 bottom end. I want to turn the boost up to 28 psi when I install the GT35R...you think the stock bottom end can handle it? I have a fully built race head so im not worried about the head only the bottom end. Was wondering how long the engine would last on 28 psi. Maybe I asked this question before but I forgot the answer.. my memory isnt so good

who has run this much boost and for how long?

 

as long as the car is tuned properly...it should be fine. I've seen up to 35 pounds on a stock motor and 35r without problems.

 

dam.... 35 psi lol

 

yeah sean ivey is running 35 psi ....
that car is freaking fast....
i though i was going to die....LOL

 

Yep, you'll be fine with 28PSI

 

are you serious i thought 26 was gonna be pushin it on a stock block 35?!?!? holy crap

 

Nope, at 26psi, you are only pushing the stock turbo

 

It probably isn't a good idea to go over 28 psi or 400 whp daily without building the shortblock. 35 is a bad idea. Knock at that boost and power is a dangerous thing and you may need a whole new block if a busted rod puts a hole in it. Why not just do it and get the piece of mind? I am.

 

28psi is insignificant, you should be looking at an end HP goal as the bottom ends limit..

 

knock on any motor will kill it... built or not.

35 psi should be ok as long as you have headstuds. I run 28 all day with no ill effects and like others said, people like Sean run over 30.

 

hey Trinababe r u running with alky too at 28 daily?

 

If you can run 28psi on pump w/ no alchy you are the man Yes I spray methanol in the car.

 

me & one other guy run @ 28 psi & have been the last year he has a 65lb min turbo i have 70+ lb a minute turbo & we both have had no problems..
(he has rod bolts & head studs i just have head studs) just race gas for us though.
i plan on running around 30-32 psi this year though so we will see what happens

 

Derek888

How long you been running 26psi?? Do you have ARP headstuds??

THanks

 

i run 25 PSI all day long on the '03. i ran it for a couple months at 30PSI but there was no gain in power due to the stock turbo/no cams. the block if i recall is pressure tested to 40PSI on stock internals. you can take it even further if you change pistons & rods...