My LS-Coupe Turbo Build

[naynay]

sam goin ham

[Big Thumper]

I see where he's going with this. He said he was pushing the envelope. More boost/timing and another meth nozzle is doing that.

[dville_gt]

I'm not going to increase timing

Only a greenhorn would try to make power with timing over boost. This is why real tuners (like myself) get paid the $. Something has to seperate us from fools like you.

Can you read?

So you are 100% sure that the piston went pop due to a tune that it was fine on for 40+ passes? Couldn't have been bad gas, couldn't have been a patially clogged injector, couldn't have been the poor cooling on #7 that claims tons of pistons? What about the stock tight ring gaps + the hot #7 + 10:1 compression? Combination of all of the above?

My plan at this point is to stay on pump/meth and add a couple of gallons of race gas at the track when I am going to turn up the boost.

[03shadow4v]

Sam put a virus on the tune file .... Case closed

[NoClassic]

No like I said stock bore 5.3 I will give u a clue GM use to do it from the factory.

Have you read any first hand experiences of people notching newer blocks? That would be pretty cool if it worked out.

[dville_gt]

someone should tell this guy that pump gas won't work
347ci
scat rods
mahle pistons 8.8:1
72cc deck afr 225's
222/609 117 cam
twin pte 6265 turbos

955rwhp

[dville_gt]

8.58 @ 165 on pump gas

[Sam88gta1]

buys room on pump gas. some folks actually see more power with less (or the same) psi via the ability to be more aggressive with timing. 10:1, pump gas and 17+psi is hard to prevent detonation. 9:1 opens the window a little.

This is what I read. Do you remember typing this?

Its not hard to prevent detonation if you are an experienced tuner.

[Sam88gta1]

Sam put a virus on the tune file .... Case closed

Dville is the Virus in his own tune. I gave him a perfectly fine file to work with and explained timing to him. Apprently he added over 5 degrees and 5lbs of boost to the last file I looked at.

[dville_gt]

buys room on pump gas. some folks actually see more power with less (or the same) psi via the ability to be more aggressive with timing. 10:1, pump gas and 17+psi is hard to prevent detonation. 9:1 opens the window a little.

just stating that some folks actually make more power on less boost via more timing that can be achieved with lower compression.

This is what I read. Do you remember typing this?

Its not hard to prevent detonation if you are an experienced tuner.

Dville is the Virus in his own tune. I gave him a perfectly fine file to work with and explained timing to him. Apprently he added over 5 degrees and 5lbs of boost to the last file I looked at.

ya, you can prevent detonation by disconnecting the charge pipe as well. i'd rather replace the stock internals after 50 runs then run around crippled at 10*/10psi.

[46Tbird]

i'd rather replace the stock internals after 50 runs then run around crippled at 10*/10psi.

You got your wish. (sorry, had to)

I'd use the opportunity to convert to E85, if only because it would give you a larger margin of error than gasoline. Yes you would have to reengineer a fuel system and all your tuning goes out the window but I think you should at least consider it.

[DON SVO]

You got your wish. (sorry, had to)

I'd use the opportunity to convert to E85, if only because it would give you a larger margin of error than gasoline. Yes you would have to reengineer a fuel system and all your tuning goes out the window but I think you should at least consider it.

He will need new pump(s) and injectors, sure, but the tuning won't go out the window, it's a pretty basic conversion factor from E85 to 93 pump... modifying the tune to take advantage of the E85 is no harder than tuning on pump 93. E85 flex fuel vehicles have a sensor that determines the fuel type entering the rail, standalone PCM management systems are starting to include these sensors and/or provisions for them.

If you have a street car you want to make big fucking power with, E85 is a godsend.

[dville_gt]

wonder how much hp my current fuel system would support on e85.

92lb injectors, eliminator pump, -10 feed, -8 return. i could still use the meth injection if i needed it for extra fueling. i just really don't want to have to deal with finding e85 all the time.

[VaderTT]

wonder how much hp my current fuel system would support on e85.

92lb injectors, eliminator pump, -10 feed, -8 return. i could still use the meth injection if i needed it for extra fueling. i just really don't want to have to deal with finding e85 all the time.

E85 needs 48% more fuel flow compared to the exact same engine running on Gasoline, what duty cycle were you at before?

--Edit-----

I've seen people say that pump maxes around 875rwhp on e85 and a little more with a controller or bap.

All kroger stations have e85, it's so available that I'm planning on converting my daily eventually.

[Sam88gta1]

ya, you can prevent detonation by disconnecting the charge pipe as well. i'd rather replace the stock internals after 50 runs then run around crippled at 10*/10psi.

Crippled is having to replace a piston. Being down 30rwhp at 10 degrees of timing is making an engine last on pump gas. You need to quit putting faith in your Craig's list methanol injection system.


How many full passes did you make at 17lbs and 15 degrees? 6-7?