bjuice hit the nail on the head, i have heard some guy,s say you can have too much, and under some conditions this may be true, but i don,t see 14-15-1 being close to those conditions. and would be the min.. i would want for a race motor. jmo

VP c-16 gas

I was once told something that appears obviously true."there is only one way to make more power,increase cylinder pressure how you do this doesnt matter"obviously the fuel must be able to take it,methanol can & who knows what the upper CR limit is.

I'm not saying don't raise your compression, but don't expect a 100+ HP gain, by just raising the compression from 12.5-14.5, with no other changes. HP don't come that easy.

My engine program shows a 16 HP gain on a methanol 582" engine making 970 HP, by raising the compression from 12.5/1, to 14.5/1, and it assumes the dome size needed to raise the compression, didn't start hindering flame travel, or causing some other combustion issues.

I think 16HP is more realistic, than 100+.

Randy

methanol compression
 

there are tables and formulas for calculating how much compression increases power. diminishing returns...

if cylinder pressure is greater before ignition, chances are good it will be greater after ignition..

not sure what maximum compression with methanol is, as long as rich, it will be accomodating..

Looks like come spring we will get some real #'s on what the compression change is. Motor is going to need new pistons (block was a bit out of round) so I am just making the move to bump compression upto 14.5-15:1

there ya go hammer, and hang on tight. :lol:

I'll hope for a bunch of hp but wont need it, the motor is pretty good as is but everyone always wants more power right :lol: :wink:

yep, too much is not enough. :lol:

You won;t pick up 100, but I would say from expierience, 20-25, maybe 30hp. Which, if you need pistons anyhow, why not. If it was going from 10:1 15:1, you could expect possibly 100hp, but your at the point of diminishing returns. Q-16, will add another 35-40hp over C-16, once tuned properly. Its expensive, and stinks, but definately makes more power.

Frank