Just wondering if anyone has run methanol injection on a natural aspirated Lt1. I'm wondering how much extra timing you were able to run? and increase in trap speeds or dyno numbers after? I know it works great on forced induction as I have used it a few times. I'm considering using it on a cammed NA engine and run nice aggressive timing when spraying methanol.

 

Do you have E85 available near you? That would be an easier and more reliable upgrade switching to E85 than methanol, especially on an N/A build.

 

Pointless going E too.

 

This is false.
I've seen gains on anything I've ever ran on E85 over 93 gas. True that the gains aren't as much as when going E85 with boost, but E85 is more detonation resistant, allows for more timing and compression, you usually gain 3-5% more torque over 93. It also runs more consistent at the track, has a wider A/F tuning ratio for WOT power, and burns much cleaner. It keeps your fuel lines and injectors cleaner, and there is much less carbon in the combustion chambers when running it. Every engine I've taken the heads off of that runs E85 has much cleaner chambers and pistons than gas engines. Even my daily 6.2 2015 Sierra, just doing the E85 conversion and tune gained 30rwhp/35rwtq just on the fuel swap and tune. When my TransAm was just a bolt-on car it gained about 12rwhp only switching the fuel and adding 2* timing on the dyno over the previous 93 tune.

 

E85 is not really an option around here so I revert back to my original question. ?.

 

Ok, if E85 isn't available near you, what kind of compression are you running N/A that would need the extra octane and intake cooling boost from a methanol/water injection? LT1's can typically go up to 12:1 and sometimes a little higher on 93 fine with a decent size cam, due to the reverse cooling. Are you running over 12-13:1 where the extra octane and intake charge cooling would be needed from a water/meth kit? If you are pushing the limits of compression for 93 and you don't want to have to switch to race fuel I could see where there could be some gain to running it. Below 12:1 compression, I'm not sure how much you would gain running it, maybe 10 more hp from bumping timing a couple degrees and cooling the intake charge a little bit? With a typical heads/cam engine, the timing isn't necessarily limited by the octane level, but rather that it just doesn't make more power beyond a certain timing level, even with no detonation or preignition. I've seen that in E85 and in race gas, on mild compression engines, yes it allows you to add more timing without getting any knock issues, but at the same time, power doesn't increase beyond a certain point of timing. That's why N/A engines run so much more timing than boosted engines already, because the boosted engines have to have the timing scaled back for knock with the extra pressure and heat, and the higher octane fuels allow you to add some of that timing back in. Now if you are planning a 13+ compression build and want to use 93 octane, instead of race fuel or E85, then yes you would could run the water/meth kit to allow you to do so without having to pull timing out due to the 93 gas.

 

Thanks. Thats kinda what I was thinking but wanted some other opinions on it.