Originally Posted by Vyperpunk
Wouln't meth still be needed even if you have a ported head for cooling purposes during boost?
Ideally. I left that out because that is the setup that Powell runs and the last time I left that out he got all pissy! lol
The largest overall restriction in the LSJ is the exhaust ports on the head. So if you free of that restriction it goes a long way.
Originally Posted by Retard Fast
Im sending my head to billabong9687 to get port and polished since im getting a head gasket repair. And i fond out a station thats about 15-20 mins from my house sells E85. Im not gonna lie. Im intimidated by E85. I know nothing about it except you need 80#s and all 3 cooling mods. When i purchase all of my performance mods im seriously thinking about going with E85 on my m62. Ive read you can use a 2.5 or 2.6 with E85? Can i get away with that on stock springs and stock cams? And my only tunning option atm is zzp...
Don't go crazy with these tiny pulleys. Just because one person had done it doesn't mean everyone can do it all day long. No one should go lower then a 2.7" pulley unless they have the means to constantly monitor and update their tune.
I have ran a 2.6" on the M62 but all it really does is ramp up the TQ a little faster under the curve. Peak HP is probably very similar to a 2.7" or maybe even a 2.8".
A 2.8" pulley maxes out the official efficiency rating of the M62 just before 7000rpms. So spinning the M62 past that makes it much less efficient.