[Umbriel]

Originally Posted by danhr

Friend of mine has a d1sc with 4.5 pulley, stock lt1 fueling, dual nozzle meth kit. Not out of fuel.... 680 rwhp

The meth is making up the extra fueling needed, theoretically the stock LT1 system could fuel 2000 HP like that, I'm sure you know that though. I personally do not want to run meth on my build as it's another thing to fail, I actually had a pump failure on my last build but got lucky and caught it before damage occurred so no more meth for me.

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[danhr]

Originally Posted by Umbriel

The meth is making up the extra fueling needed, theoretically the stock LT1 system could fuel 2000 HP like that, I'm sure you know that though. I personally do not want to run meth on my build as it's another thing to fail, I actually had a pump failure on my last build but got lucky and caught it before damage occurred so no more meth for me.

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Any time you use meth on the lt1, you are using it for fuel. I didnt know there was a system on the market where you could place a check mark or uncheck a box if you want to use meth as an intercooler without using it as a fuel on the gen v motor.

OP never mentioned any opposition to using meth.... just wanted to know if d1x and lt1 fueling is possible... and it is... with meth

[Umbriel]

Originally Posted by danhr

Any time you use meth on the lt1, you are using it for fuel. I didnt know there was a system on the market where you could place a check mark or uncheck a box if you want to use meth as an intercooler without using it as a fuel on the gen v motor.

OP never mentioned any opposition to using meth.... just wanted to know if d1x and lt1 fueling is possible... and it is... with meth

Yeah he never mentioned it so I assumed he wanted to not use it, if he didn't mind using it the question wouldn't even need to be asked.

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[KingLT1]

Yea it's hard to beat meth for additional fueling from a cost perspective. 600.00 kit can get you all you need to make over 700whp easily with stock fuel system.

[Umbriel]

Originally Posted by KingLT1

Yea it's hard to beat meth for additional fueling from a cost perspective. 600.00 kit can get you all you need to make over 700whp easily with stock fuel system.

After my pump failure I am very leery of using meth and even though it cost me A LOT more I went with a new intake with port injection bungs and a secondary port injection system from Crawford Racing. I now have enough fuel system for 1400 HP on E85 and I plan on making out these two 6871s going on it.

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[TheDamme94]

With a meth kit though stock pistons become a ticking time bomb in the higher boost ranges correct? I mean i dont have any aversions to meth injection as a fuel supplement. Port injection is my future goal to have but as of now it takes money to play and port injection kits are high dollar

[Umbriel]

Originally Posted by TheDamme94

With a meth kit though stock pistons become a ticking time bomb in the higher boost ranges correct? I mean i dont have any aversions to meth injection as a fuel supplement. Port injection is my future goal to have but as of now it takes money to play and port injection kits are high dollar

They are expensive, my intake was $2700 and my fuel system was $5000 but it will make 1400 on E85. Meth is a cheap alternative for sure, I wouldn't worry too much about pistons and rods until you are over 700, anything under that you should be ok. There have been multiple people that have pushed the stock bottom end over 800 with no issues.

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[KingLT1]

Originally Posted by Umbriel

After my pump failure I am very leery of using meth and even though it cost me A LOT more I went with a new intake with port injection bungs and a secondary port injection system from Crawford Racing. I now have enough fuel system for 1400 HP on E85 and I plan on making out these two 6871s going on it.

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Yea I agree...which is why I spent money on a fuel system.

[danhr]

Originally Posted by TheDamme94

With a meth kit though stock pistons become a ticking time bomb in the higher boost ranges correct? I mean i dont have any aversions to meth injection as a fuel supplement. Port injection is my future goal to have but as of now it takes money to play and port injection kits are high dollar

Incorrect. Meth is actually what SAVES the pistons... not the opposite

[Umbriel]

Originally Posted by danhr

Incorrect. Meth is actually what SAVES the pistons... not the opposite

I think he is just referring to making more power with meth which the pistons can't handle? If I am interpreting it wrong then nevermind.

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[danhr]

Originally Posted by Umbriel

I think he is just referring to making more power with meth which the pistons can't handle? If I am interpreting it wrong then nevermind.

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Also incorrect. Hp isnt what kills pistons... it's the heat. Which is why some people blow a piston with sub 600 reho numbers and others get away with 700+ and 800+ on stock bottom end

[Umbriel]

Originally Posted by danhr

Also incorrect. Hp isnt what kills pistons... it's the heat. Which is why some people blow a piston with sub 600 reho numbers and others get away with 700+ and 800+ on stock bottom end

I was just trying to refer to what he might be thinking was all, just like people say the LT1 can't handle more than 10 pounds of boost when it isn't the amount of boost that's the problem. There are multiple people over 800 on SBE but I didn't want to deal with it so I went forged.

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[TheDamme94]

So it is all reliant on tuner and setup of meth kit when it comes to SBE boosted applications to control heat. Which parameter would be the ideal to watch for piston health under boost? IATs, AFR, Lambda? Sorry for so many questions, this discussion has taken a turn to such an interesting topic and im super curious about these setups

[danhr]

Originally Posted by Umbriel

I was just trying to refer to what he might be thinking was all, just like people say the LT1 can't handle more than 10 pounds of boost when it isn't the amount of boost that's the problem. There are multiple people over 800 on SBE but I didn't want to deal with it so I went forged.

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really? who has 800+ rwhp on a SBE lt1? I only knew of one.

Originally Posted by TheDamme94

So it is all reliant on tuner and setup of meth kit when it comes to SBE boosted applications to control heat. Which parameter would be the ideal to watch for piston health under boost? IATs, AFR, Lambda? Sorry for so many questions, this discussion has taken a turn to such an interesting topic and im super curious about these setups

either meth or e85, imo. That's just my personal opinion. and those questions are something you need to bring up with your tuner, not a forum. there's A LOT of different ways to skin the cat as far as tuning FI LT1s...… some people run them a little fatter with more timing... some run them leaner with less. some think an lt4 fueling system is mandatory.... some think meth is mandatory. it all varies on your tuners approach... so pick your tuner and trust them.