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Originally Posted by jessrayo
The tvs supercharger rotor coating does not really like methanol. It will eventually erode the coating. If you are overdriving the supercharger and getting it really hot then the methanol seems to eat the coating faster. This is from first hand experience on my ZL1.
Everyone I know that advocates the use of Methanol says tune the car to run on the gas in the tank and then spray the Meth on top of it for cooling and a buffer against knock and the negative effects of knock. Since this LT1 motor came out in the C7 and the aftermarket is trying to build powerful motors a lot of tuners are going down the methanol path to get horsepower you just cannot make when you have 11.5 to 1 compression ratio and boost. I'm just going to throw this out there but I don't think anyone can possibly make 750 or more whp on just pump gasoline on a stock LT1 motor. To run this kind of compression and boost you only have a few options. High octane race gas, alcohol fuel (E85) or spray a bunch of methanol and tune the car to use methanol as a fuel to compensate for the octane deficiency. I'm seeing more and more of this kind of methanol use and it was a big temptation on my turbo car to spray a load of meth so I could run more boost.
To be honest I'm considering buying a LT4 crate motor from Jegs mainly for the lower compression 10 to 1 pistons. The plus is then I have all of the mechanical fuel Pump and injector upgrades as part of the package and no engine disassembly at all. Anyone interested in buying a slightly used LT1 with only 6000 miles on it and a never been used LT4 supercharger?
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I've read this a few times, the coating coming off, and the consensus was that it wasn't a big deal. Did you experience other wise? Mainly Vette guys I saw doing it commented that the coating coming off didn't affect anything for them so curious what your experience was?
I built my Challenger's motor to 9:1 compression. Knowing what I know now, I would have gone a bit more on compression (10.5:1) and run less boost. I calculated I'd make the same power on less boost, meaning cooler IATs and a happier setup. 11.5:1 is getting up there, but do you think it's that big a deal to just run a bit less boost? Making 560 on 7psi seems pretty good to me. I'm waiting for some of the track folks to bump it to 9 or 10psi on 109 race gas and see how it goes. Had a buddy run 10psi on his stock R/T Challenger and everyone said he'd blow it up. He only ran that at the track on Sunoco 110 and 3 years later he was still going strong. He eventually had a a built motor put in, had all kinds of issues, and sold the car wishing he'd left it a lone LOL.
Quote:
Originally Posted by Atomic Ed
Speedy, I looked at that pump, but we're talking 5-6 years ago when I fooled around with it. Hopefully they have improved over time.
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Thanks, fingers crossed they fixed whatever the problem was.