Originally Posted by ZNix

I think they are in the 550-600 range. But they are worth it for that price. You run STRAIGHT Methanol through his pump (best cooling effect). No oil additive or anything. If you cannot find meth, you can even use denatured alcohol off the shelf of a hardware store (expensive, but good in a pinch, also little harsher on the pump). I put the kit in myself in only a couple hours (17 year old mechanic here). Somebody on here is using it in their 580HP procharged LS1 on a stock short block.

Nix

Originally Posted by The Alchemist

No, it's not. It evaporates quicker, so yes, it will give you a lower reading at the IAT sensor, but once it hits the combustion chamber and ignites, it adds to the overall heat in the chamber. Water on the other hand, cools as it evaporates, which is slower at ambient temps, but once it hits the chamber, pulls out considerably more heat, and since it doesn't ignite, it doesn't add anymore heat back into the piston/chamber like methanol does.

Does methanol make more power, YES, but it also adds more heat. On a stock shortblock, the pistons and rings can't handle the extra heat, remember horsepower is directly related to heat. More power, more heat.

Here's a chart showing the difference between how much heat the methanol absorbs versus water...

100% Water is on the left, 100% meoh is on the right.


I'm not opposed at all to running 100% meoh because you will make more power than mixing in water with it, but if you're after a cooling effect, 50/50 is what I would (and will) run.

Remember, knock is also very sensitive to heat, hence why we run cooler plugs.

Originally Posted by The Alchemist

No, it's not. It evaporates quicker, so yes, it will give you a lower reading at the IAT sensor, but once it hits the combustion chamber and ignites, it adds to the overall heat in the chamber. Water on the other hand, cools as it evaporates, which is slower at ambient temps, but once it hits the chamber, pulls out considerably more heat, and since it doesn't ignite, it doesn't add anymore heat back into the piston/chamber like methanol does.

Does methanol make more power, YES, but it also adds more heat. On a stock shortblock, the pistons and rings can't handle the extra heat, remember horsepower is directly related to heat. More power, more heat.

Here's a chart showing the difference between how much heat the methanol absorbs versus water...

100% Water is on the left, 100% meoh is on the right.


I'm not opposed at all to running 100% meoh because you will make more power than mixing in water with it, but if you're after a cooling effect, 50/50 is what I would (and will) run.

Remember, knock is also very sensitive to heat, hence why we run cooler plugs.

Originally Posted by ZNix

I stand corrected. I can see where this would be an issue on a car not designed for FI. Buicks don't have this issues, so straight Meth has been great for the IAT reduction, and octane increase so we can run WAY more boost than stock. I myself am running just over 26PSI of boost on a stock short block, while others have seen 30+.

Originally Posted by ZNix

I think they are in the 550-600 range. But they are worth it for that price. You run STRAIGHT Methanol through his pump (best cooling effect). No oil additive or anything. If you cannot find meth, you can even use denatured alcohol off the shelf of a hardware store (expensive, but good in a pinch, also little harsher on the pump). I put the kit in myself in only a couple hours (17 year old mechanic here). Somebody on here is using it in their 580HP procharged LS1 on a stock short block.

Nix

Originally Posted by The Alchemist

I agree 100% with you. On a motor built to see boost, the rings and bearings have tolerances designed to handle the higher heat seen from a forced induction setup, so running 100% methanol is fine. But on a stock ls1, with rings gapped as tight as 0.009" (mine were between 0.010 and 0.012") high heat from forced induction is a recipe for disaster. The water helps to keep the chamber temps a little friendlier.

Originally Posted by 02gangsta/ss

that would be me ...alky control i run 100% meth and im on bone stock motor .....575 rwhp 535 #ft tq

Originally Posted by tbss23sfv

so would a 50/50 mix be the best or would something like a 75/25 be better im looking to make the most power but the longevity of my stock short block is more important

and will this help making more power above 600 since i guess that's the reason most stock motors let go