spike4444 Posted October 12, 2004 Author Report Posted October 12, 2004 spike when you rebuild be sure to run a good race fuel, doesnt have to be anything oxygenated or super high octane. just like VP red or something, and mix it 50/50 with regular pump gas. and what type of head are you running? also even if you had static compression of 170 if you are ported that will also alter the number somewhat, so tell us if your ported or not also. Hey therail, Can you explain this race gas thing in more detail. When you say mix the race gas with pump gas I'm assuming that you mean my pre-mixed pump gas. Also what ratio does race gas come in and what do I require. I have very little porting done other than a little clean up and I will be purchasing a cool head on my rebuild. What head do you recommend? Thanks. Cya Quote
racer Posted October 12, 2004 Report Posted October 12, 2004 ok, race gas does not come in any premix. it is a more pure less combustible form of regular gas. RG comes in various levels of octane. much like what you see at the pump, but instead of seeing number slik 87, 89, 91, 93, youll see 101 100 110 105 and higher. these higher numbers resist predetonations (this is what caused the little marks on the tops of your pistons) from running too high of a compression ratio in your motor. so when i said mix with VP Red i meant take 2.5 gallons of 91 octane reguler, umixed fuel, and put it in a can. Then put 2.5 gallons of Red in the same can and shake it up. the two fuels will mix together and the octane ratings (91 and 105) should average to 98. **AFTER you have mixed them then ADD your premix oil.** VP red is a 105 octane fuel made my Vp fuels and is reasonable at 4-5 per gallon. However if you do get your coolhead you may not need this because, depending on which domes you choose, your compression could be lower. As for a head, i have a Pro Design head and i like it. Some like the Noss head, other like the RK tek. The PD and the noss are 265, while the RK is like 350. Quote
lincster Posted October 13, 2004 Report Posted October 13, 2004 Why would you add your oil after you put the gas in? The force of the gas going into the can helps the mixing process ALOT. Quote
racer Posted October 13, 2004 Report Posted October 13, 2004 Why would you add your oil after you put the gas in?The force of the gas going into the can helps the mixing process ALOT. so you dont have to mix the race and regular seperately? and so you KNOW its done properly Quote
lincster Posted October 14, 2004 Report Posted October 14, 2004 I stand there and watch the guy put in 2.5 gallons of race and then I pump in the Premium myself. Can't be any more sure than that. Quote
racer Posted October 14, 2004 Report Posted October 14, 2004 (edited) I stand there and watch the guy put in 2.5 gallons of race and then I pump in the Premium myself. Can't be any more sure than that. right, but if that guy didnt mix his first 2.5 gallons to 16:1, then the ratio will be off. dont f*ck wiht my methods just trust them Edited October 14, 2004 by therail Quote
lincster Posted October 14, 2004 Report Posted October 14, 2004 Dude, relax. I have been mixing my gas the same way for 4 years and it works fine. What are you talking about ratios? You pour in enough oil for 5 gallons, I mix mine at 32:1, then I put in 2.5 gallons of race gas and 2.5 gallons of premium. Quote
racer Posted October 14, 2004 Report Posted October 14, 2004 Dude, relax.I have been mixing my gas the same way for 4 years and it works fine. What are you talking about ratios? You pour in enough oil for 5 gallons, I mix mine at 32:1, then I put in 2.5 gallons of race gas and 2.5 gallons of premium. i was just fuckin around. it works the same if you put th oil in before or after the gas. im mostly saying that you need to put the oil in the final container. that way you dont have to worry about whether its mixed properly or not. Quote
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