how much boost?
#1
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how much boost?
i was planning on getting tuned soon until i heard i was getting an overdive pully from c/a from my girl. i will be running a 2.79 pully with the overdrive which they say adds 1# of boost roughly. what kind of boost #s will i be looking at? and will i need any further cooling other a C/A dual pass he and hatrickstu's cooling mod, cuz those i have? And yes i have 60's.
hp mods are=v2 header, 3 inch dp w/ cutout, 2.5 cust.exhst, 3 inch intake.
hp mods are=v2 header, 3 inch dp w/ cutout, 2.5 cust.exhst, 3 inch intake.
#2
I recommend methanol injection. As far as boost you will see about 16lbs give or take. Remember boost doesnt always = power. If you can, watch your iat2's. But as I stated, you should REALLY think about methanol injection.
If you plan on doing back to back pulls, you will need meth injection or atleast water injection. Who is doing the tuning?
If you plan on doing back to back pulls, you will need meth injection or atleast water injection. Who is doing the tuning?
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so i should only see a 1# of boost dropping down 2 pully sizes with the over drive?
cuz right now at 5000rpms i hit 16 psi in jersey we tend to see alittle more boost cuz we are at sea level
cuz right now at 5000rpms i hit 16 psi in jersey we tend to see alittle more boost cuz we are at sea level
#7
you sure you have a 2.5inch exhaust and not a 2.25inch?
and what pulley are you currently using?
and what pulley are you currently using?
Last edited by Zach06CobaltSC; 10-26-2008 at 11:40 AM. Reason: Automerged Doublepost
#13
I recommend methanol injection. As far as boost you will see about 16lbs give or take. Remember boost doesnt always = power. If you can, watch your iat2's. But as I stated, you should REALLY think about methanol injection.
If you plan on doing back to back pulls, you will need meth injection or atleast water injection. Who is doing the tuning?
If you plan on doing back to back pulls, you will need meth injection or atleast water injection. Who is doing the tuning?
#14
......I don't think you understand the point of methanol injection for our cars.
For us methanol injection is used for 2 things. MAINLY to cool down the iat2s. These cars can run 100% water injection, however if your custom tuned, I recommend a 50/50 mix of meth and distilled water, or just windshield washer fluid.
The water cools the car, the methanol acts as an octane booster and raises the octane. This helps with pre detonation and knock. So I don't understand why you guys HAVE to run 100% methanol unless you guys are advancing the timing so far, and are tuned so aggressive that if you don't have the extra octane you screwed, which wouldn't make a lot of sense.
My tune is pretty aggressive, if I run out of methanol and go wot *wide open throttle* it would result in a blown #4 piston more then likely same with many others here. Either way, I think I explained everything well enough for you to understand it.
I am sure ls1's are also capable of running a mixture of methanol and distilled water. Make sure it's distilled water and not pure water. Pure water is corrosive to engines, distilled water is not. If you have any more questions let me know. Hopefully this helps you, and don't take this as a personal attack, its just friendly advice
For us methanol injection is used for 2 things. MAINLY to cool down the iat2s. These cars can run 100% water injection, however if your custom tuned, I recommend a 50/50 mix of meth and distilled water, or just windshield washer fluid.
The water cools the car, the methanol acts as an octane booster and raises the octane. This helps with pre detonation and knock. So I don't understand why you guys HAVE to run 100% methanol unless you guys are advancing the timing so far, and are tuned so aggressive that if you don't have the extra octane you screwed, which wouldn't make a lot of sense.
My tune is pretty aggressive, if I run out of methanol and go wot *wide open throttle* it would result in a blown #4 piston more then likely same with many others here. Either way, I think I explained everything well enough for you to understand it.
I am sure ls1's are also capable of running a mixture of methanol and distilled water. Make sure it's distilled water and not pure water. Pure water is corrosive to engines, distilled water is not. If you have any more questions let me know. Hopefully this helps you, and don't take this as a personal attack, its just friendly advice
#15
i was planning on getting tuned soon until i heard i was getting an overdive pully from c/a from my girl. i will be running a 2.79 pully with the overdrive which they say adds 1# of boost roughly. what kind of boost #s will i be looking at? and will i need any further cooling other a C/A dual pass he and hatrickstu's cooling mod, cuz those i have? And yes i have 60's.
hp mods are=v2 header, 3 inch dp w/ cutout, 2.5 cust.exhst, 3 inch intake.
hp mods are=v2 header, 3 inch dp w/ cutout, 2.5 cust.exhst, 3 inch intake.
You don't need any other cooling mods in fact I'm not sure what other one's exist (meth, nitrous, co2).
edit: apparently you're talking about overdriving your crank pulley...I'm going to go out on a limb and say...that sounds like a bad idea.
#16
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the overdrive is for the LSJ, underdrive is for an N/A motor. im trying to feel out this idea of the overdrive, it seems like a good idea less diming of the head lights, 2lbs lighter, and one 1lbs of boost. what is the down side other than heat? would it be better just to do a stock size swap?
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