I have a 2.9" pulley and i am debating putting it on without another heat exchanger besides the stock one. How dangerous would this be.

 

you would be fine, just limit your pulls so that you dont over heat

 

are you going to be out at al this summer in the Roc?

 

I've had a 2.9 on my car (stage 2, gmpp exhaust and manifold and intake) since pretty much day 1, 2 years ago. no problems.

 

if i ever fix this low barometric pressure problem, im also having my cai and some other peices in under my hood vinyl rapped over at Technotic media.

why do u ask?

 

Cobra HE is so cheap, why worry about a potential problem when 60$ can avoid one.

Im running a 3.06 but still have every possible cooling mod but meth. dual pass, opt.b 2nd HE. look at it as insurance.

 

i fully agree with you, frankly without cooling mods i believe your probably not gaining any form of hp from going down to a 2.9

but that wasnt the question!

 

because im usually out every sunday night with a couple of other members

 

i only brought my cobalt out for 1 sunday to pep boys in henny. i was there for 5 minutes, a state trooper pulled up, and i left.

my cobalt still has a 2009 inspection sticker so i kinda am leery!

 

i plan on getting the cobra, but for tuning purposes i want to get it done with the 2.9" on

 

I didn't realize you were in NY. I'm going to supercharge my 2.2 this summer, we should race

I would definitely look into another / replacement HE. I plan on running the ZZP S/3 solo (H/E-wise).

 

if your doing it for tuning, the tuner is just going to not give as much in the timing thus having your tune kind of not to its full potential

 

Haha, im at Empire raceway almost every weekend.

 

How much boost are y'all ever seeing on a 3.0 pulley?

 

the basic rule of thumb for every .1 u drop you see 1 more psi

 

Hey guys I'm from rochester too. Webster to be exact. I also work in Henrietta so I'm all over the place. I have a black 04 Saturn Ion Redline. Lmk if you guys wanna get up once the weather shapes up.

 

P.s. I'll be ordering my zzp heat exchanger soon and if anyone wants to do the install and make a couple bucks that would be cool.

 

i barely work on my car in the winter let alone someone elses

 

I was on a 2.8 for almost 3 months without a single cooling mod and it ran amazing. Now all I have for cooling is a dual pass

 

Hah I was hoping by early summer before the heat really kicks in.

 

I don't really see why y'all would need same cooling mods as the Lsj for. They say a lot of heat but there's not as much as we make. I mean on a 2.7 we where seeing around 17-18psi by Redline and almost 20 on our 2.5. I mean a dual pass and extra heat exchanger would help for long pulls down the road for sure.