scoobylav

Does anybody have any experience of running on a petrol / methanol mixture. I run a 205 gti as a dedicated track car which has nitrous injection. Since using the nitrous the engine temp seems to be dangerously high to the extent that delaminating standard cooling hoses is real problem.

I read somewhere that using a petrol / methanol mixture cause the mixture to burn at a lower temp but also will give an increase in power. I have no idea if this is correct or not and if it is does anyone no what sort of mixtures should be used and anything I need to be wary of etc. ?

Will be very grateful for any replies.

Jolly Green Monster

iTrader: (4)

add 10% meth.. doubt the cooling effect would help your situation but would increase the RON of the fuel and therefore reduce det / increase power.

scoobylav

JGM is this something you have tried ? Is there any more benefit to going higher than 10% ? Just a little wary about this as it is something I have never tried. Any ideas on reducing the engine temp ?

Sorry for all the questions . . . .

Jolly Green Monster

iTrader: (4)

run 10% in a scoob engine yes... added about 3ron.. no benefit noticed going beyond 10%..

As to reducing engine temp, remove theromstate, rad fans on all the time, water wetter, water injection, less NOS .. lol

Simon

scoobylav

Simon - ok that is useful about the 10%
Good point about the thermostat hadnt thought of that.
Thoughts so far - Twin fans on all time bigger rad (aluminium)
Water wetter - maybe. Water injection (maybe if the rest doesn't work)
Nos spray bar onto the rad to cool.
Less nos - Don't go there dude trying all this to allow more nos

This may sound a daft question but where does one buy methanol is there pure methanol or is the purple liquid you find in DIY stores the same ?

megrac

I have been using plane meths(the purple stuff) at a 10% mix with 95 and have found 4deg more timing across the board to be still very guiet.

Meths is just 95%ethanol, 5%methanol, small amount of dye and bitter adder of some sort.
The only reson i've used it is i can get it cheaper than methanol and when i'm away you can get from the local store.

scoobylav

megrac - thanks for that

Do you find a lot of difference in performance doing this ?

megrac

In a word Yes.
Its totaly transformed the fuel. The engine fells much less sensitive to heat from hard thrashing and you just can't make it det even with 4deg more everywere.

rexabusa

where do you get methanol from