just put in the 2.7 - Boost Forum

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just put in the 2.7
Monday, July 24, 2006 3:26 PM
2.7 pulley installed much better take off.... but then again I lost alot of torque because my compression is 9.0:1 instead of the stock 9.5:1

I just ordered the 2.6 pulley and the alky should be here anyday.




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Re: just put in the 2.7
Monday, July 24, 2006 3:58 PM
so thats why you where not at the albany meet friday.



Re: just put in the 2.7
Monday, July 24, 2006 11:49 PM
nice, my CR is 9:0 cause im gonna be spraying the 65 and 80 shot once, you should do the same if youve lost alot of power you think.




Re: just put in the 2.7
Tuesday, July 25, 2006 9:04 AM
sinrocker wrote:2.7 pulley installed much better take off.... but then again I lost alot of torque because my compression is 9.0:1 instead of the stock 9.5:1

I just ordered the 2.6 pulley and the alky should be here anyday.

Stock is 9.7:1 on your year



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Re: just put in the 2.7
Tuesday, July 25, 2006 1:27 PM
i thought it was 9.5 but what ever it is 9.0 now hehehe.....

the pulley read 6psi in hot humid weather, and the other night it was 55 and dry out and i read 7. the 2.6 pulley will be on in two days




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Re: just put in the 2.7
Wednesday, July 26, 2006 9:54 AM
Why did u lower the compression if you went s/c? We know that it can only max out with the 2.6 pulley to produce 8-9psi, maybe 10 in cold weather. So you'll never have as much power as a stock 2.4l motor. I was thinking of bumping up my compression a little bit on my spare motor. Anyhow, other then going no2, whats ur reasoning for lowering the comp.

Nate



Evolution of Cavyboy-->C22t--> C24na--->c24s/c
1995 Cavalier W/2k1 Engine
GM S/C 13.940@99.78pmh w/2.068 60ft
Re: just put in the 2.7
Wednesday, July 26, 2006 11:11 AM
bigger boost plans in the future...... i am already on the 2.6 pulley. the exhaust is going in next week.

i am running good i ran one of my friends in a saturn ion and i was only a car length n a half behind him by the time we hit out quart marked on the street




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Re: just put in the 2.7
Wednesday, July 26, 2006 11:12 AM
i need to verify from the machine shop if that was what was done..... because i also remember hearing from him that i had a milled head


so i may very well have higher comp everyything else listed is a fact i will update as soon as i get a chance to speak to them




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Re: just put in the 2.7
Wednesday, July 26, 2006 1:39 PM
I lowered my compresion because I am a dumbass and have 4Gs into a motor that runs NA numbers with bolt ons.

NO ONE SHOULD EVER LOWER COMPRESSION WITH THE GM SC!!!!!!!!!!

I am going to pull my motor and replace the pistons with higher compression ones. Sucks because I did all this work and the car is a dog. Or I might just park the damn thing and buy a better car.

Anyways, have fun with the boost, you must be planning on swapping out the gm sc for a turbo or something. That would be the smartest thing to do with your current engine set up.



http://members.cardomain.com/vertz24 1998 Z24 Convertible
Re: just put in the 2.7
Wednesday, July 26, 2006 8:19 PM
Chris Fontana wrote:I lowered my compresion because I am a dumbass and have 4Gs into a motor that runs NA numbers with bolt ons.

NO ONE SHOULD EVER LOWER COMPRESSION WITH THE GM SC!!!!!!!!!!

I am going to pull my motor and replace the pistons with higher compression ones. Sucks because I did all this work and the car is a dog. Or I might just park the damn thing and buy a better car.

Anyways, have fun with the boost, you must be planning on swapping out the gm sc for a turbo or something. That would be the smartest thing to do with your current engine set up.


i have 9:0 CR and mines not a dog, i lowered mine because ill be tuning for the 65 and 80 shot of nitrous here soon.




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