Safe boost with meth 50/50 mix
 

Its 600 with 8.200:1 compression, supper chiller, Dart pro heads, 260 intake at 50 and 268 exhaust at 50. 714 lift intake and 731 exahust 114 deg. It has a new Whipple 8.3 blower on her running 10PSI of boost at 800feet. Runing 91 fuel timming is locked at 32. Plugs are l Ngk 8s. What do you think is safe running meth 50/50. Was thinking 13-14psi would be 100% safe. Afrs around 11.5 Two 12 gph nozzles of meth.
Thank u

While your assumption is probably correct, I'd mount some kind of air intake temp gauges/probes in the intake, after the intercooler. I don't think i'd want to see air intake temps getting close to 200* on pump gas. I'd also look into a knock sensor/retard system. The methonal is amazing stuff, but without a failsafe device, should a nozzle clog or pump fail, it will be melting stuff. You'd probably want to talk to eddie young on something like this.

Not sure how fast you're wanting to go in that thing, but adding meth and additional 4-5psi of boost is gonna be some serious power. You may want to even look at forgetting the meth, installing the whipple intercooler, and still prob be ok at 12psi and see a substantial gain in power.

I think you need to back down timing to about 28, if you are using the meth inj to cool only run more water than meth....at the boost level you are now I think you should be fine..if you want to go up run 93 and more water in your mix...you should be making some serious power at this point....

Yes i am run 93 my bad. I want to run 13+ PSI i am running 50/50 blend because i want the meth to add motor octane. The blower is 10% overdriven now going to 20% this weekend looking for 140mph.
Thank you Skydog

I would definitely retard the timing. I'm not a whipple guy but I know with that kind of cam and a procharger you could put 16lbs into it safely with no water meth. The water meth stuff is usually used to cool down the intake charge rather than add octane. Mainly when not running an intercooler. If your running that motor on the ragged edge you better hope you have a good meth kit cause if the solenoid doesn't come on you can kiss your motor good bye. I know in the past the water meth kits were not very reliable and guys spent big money figuring it out...

Yea I understand, my meth kit is very soild. The way it is set up and wired, I am worried about plenty of other parts failing first!! Lol And talking to Dustin Whipple he sets them up 12-13psi all day on 93. So I feel if I have a failure I should be ok to catch it.
Thank u for the input guys

have you considered running E85? that has like 110 octane if you blend it..

Man I have thought about it, but not enuff...lol going to check on it more tomorrow!Thank u :-)

I'd be careful retarding the timing too much. We don't wanna melt exhaust valves

Yea ty I like 31-32 :-)

I think it's closer to 105 but it works great. We've been running it for two seasons now, no problems at all. You will need about 40% more at top end.

Last year i have run with snow performance water meth kit, i run b&m 250 on 468ci at 10 of boost without intercooler great result until i had pump issue after about 20l of water meth, next time i will install a failsafe unit, this year i run at 6.5-7 of boost non intercooled.

You really should be running 9 or 10 heat range plugs. 9 should be a minimum at your level.

Check E85, it strongly cool intake air.
High octane rating and much better
detonation protection than regular gas.

I use it my car with 60%gas / 40% E85
and wont need bigger intercooler or catles
downpipes and still can use 17psi boost levels.

Retarding the timing doesn't always increase exhaust temps. If you have a good enough flowing port exhaust temp should not be affected. It's always better to turn back the timing and make a run. Slowly add timing and pay attention to performance. As soon as it looses a little it is pre detonating. If you run moly rings and it detonates one time it will eat the moly right off the rings...

I run meth and 34*

Nice! Well new tune in, ngks 9s blower from 10% to 20% bigger meth nozzles,timming 32deg :-) time to go pro and let her eat!!!!!
Skydog

Video please! :coolcowboy:

Yup if all goes right for sure!! :-) :-)

Well ?

I run 31 degrees of timing at 13lbs or so of boost on 93 octane with my procharger but my I have less stroke (540 ci). The E-85 has a rating of around 105 octane but acts like more because of the cooling effect of the alcohol, my kid runs it in his Grand prix 3800 sc, you have to be careful with buying e-85 as there are 3 different grades of it and unless you test it yourself (very easy to do) you don't know what they are selling you and it will effect your tune, Smitty

Coming soon..... :-)

Best of luck to you !

Thank you man!! :-)

No pics, video's, NOTHIN ???


THE SUSPENSE IS KILLIN ME!!!

Lol sorry soon :-)

THE SUSPENSE IS KILLIN ME!!![/QUOTE] well ?

Got to have some news by now

Lol sorry, just been jetting her down, added new batteries. Are river is all but gone:( My one straight away is about 1 foot deep. And been super hot and humid. So with any luck,rain and I get some good air I will give her hell on the go pro.

Thought maybe you're bolting a Procharger on that thing.

..Good Luck...we are getting closer now on our EFI tuning...film @ 11 !!!! Rob

Did you think we would forget ?

??