5.3 vs80 power output ?

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Jun 8, 2020 | 05:46 PM

#41

Kfxguy

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From: Louisiana

If we had e60 I might would try it. We have three stations with e85 which honestly is inconvenient for someone like me that drives the car 99% of the time vs track going.

Jun 8, 2020 | 06:28 PM

#42

ddnspider

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From: FL

Quote:

Originally Posted by Kfxguy

hey hey hey (raises hand) you know I’m on pump too....you forgot about meeeee lol

Lol true true. Get that meth kit on!

Jun 8, 2020 | 06:44 PM

#43

Dragframe

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From: wyoming @ 12000 DA...

Quote:

Originally Posted by ddnspider

Sometimes I swear I must be the only person with a boosted LS NOT running E85

That said, I will gladly "**** away" 20hp for more cushion on 93 pump gas.

Nope.. still running the petrol here. I don’t have the funds for the fuel system for e85... nor is it available anywhere here yet.

You can take 60# injectors pretty far with 110 and 4 bar of fuel pressure 😂.

Jun 8, 2020 | 06:50 PM

#44

ddnspider

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From: FL

Jun 8, 2020 | 07:38 PM

#45

Mavn

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From: Houston

Quote:

Originally Posted by Kfxguy

well if you run e85 then you can get away with it easier. He asked for pics of broken pistons from a butted ring. So I posted one.

Recommending using a tighter gap to pick up .00001% hp and fuel mileage is silly to me. I’d much rather piece of mind for more safety, stuff happens and I’d rather be safer than sorry. Just my opinion.

Oh I agree . My forged build has very large gaps.
again tho. E85 is king.

I run 28 ish psi and 20* of timing. No meth Walmart e85

Jun 8, 2020 | 07:48 PM

#46

Kfxguy

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From: Louisiana

Quote:

Originally Posted by ddnspider

Lol true true. Get that meth kit on!

I am. I had to take a break from it after the fuel system build. I had to start on another turbo kit for another gto in my shop. So my car goes on the back burner. When I finish that car, I’ll get the meth on.

Jun 8, 2020 | 07:54 PM

#47

Mavn

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From: Houston

Quote:

Originally Posted by Dragframe

E85 fuel
2 walbro 450s $200
Amazon-8 - $80
Snake eater 1500s - $400

Profit.?

Jun 8, 2020 | 08:03 PM

#48

Kfxguy

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From: Louisiana

Quote:

Originally Posted by Mavn

E85 fuel
2 walbro 450s $200
Amazon-8 - $80
Snake eater 1500s - $400

Profit.?

you forgot:
fittings and fuel line $200ish
adustable regulator $150ish (good one)
relays, wiring, Hobbs switch $50
twin pump mount (varies)
that’s around $1000

lolololol

then if you want to add in a flex sensor $$$$ and tuning for that $$$$$

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Jun 8, 2020 | 08:25 PM

#49

Mavn

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From: Houston

Quote:

Originally Posted by Kfxguy

I added the fuel line and fittings its $80
i made 850 wheel on a $40 Amazon PQY regulator

No hobs switch needed .
2 relays are $10 off Amazon with wiring and fittings like $10-15

Twin pump mount ? They fit in the stock bucket 99% of the time with cutting.

You're Making this harder than you need to

Jun 9, 2020 | 09:53 AM

#50

tblentrprz

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Quote:

Originally Posted by Kfxguy

stock ls1, 93 pump 12psi 11 degrees timing. Stock ring gap. Piston number 7. I’m pretty sure the the ring butted. Gap was like .022 when I checked it.

Don't need to guess if the ring butted. Pull it off and take a look, you'll see if the ends contacted/rubbed. Hard to guestimate what the ideal gap should be for each motor combo and application. Lots of variables that influence CC temp and piston/ring response to temp. With LS SBE, not much CH on piston to absorb heat. With gas, better to have some ring gap cushion. No need to let everyone know you skipped that step. Be interesting to know, when folks pull a motor down to freshen it up if they look at ring ends to see if any contact? May knock the carbon off but not enough to butt/bind in bore.

E85 has likely saved a lot of motors that have been pushed beyond what factory piston/ring pack could handle with tighter gaps. Stock48 was successful pushing the 6.0 SBE limits by using e85 and keeping AFR in a safe zone. I'd guess at his power levels, AFR moving towards upper 11s would've been catastrophic at .019" top ring gap. Although I don't remember what his IATs were.

Jun 9, 2020 | 11:08 AM

#51

Forcefed86

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From: Wichita, KS

Quote:

Originally Posted by Kfxguy

hey my man, think of it this way...if they are new to the sport, a wider gap would be in their favor....being new and all, it might save their motor with a wider margin of error...especially on pump.

That's the point though... It's not in their favor. If guys are running 41+bs of boost at 8400 RPM with a .022 or tighter. There is ZERO reason to open them up. The average Joe running a baby turbo at 15-20lbs isn't going to butt a ring on E85.

I'm all for checking them and cleaning the carbon crap out to make sure you don't have a random tight ring. If you have .019 or greater on a 3.78" bore motor... its gonna be fine. Opening up the gap serves no purpose.

Stock 48 was making more power than most of us ever will and he was on .018 with a 4" bore. "Subeone" is another good example.4" plus bore LS3 1157whp .017 top ring. If your not a spaz and can tune. 99% of the time a factory ring gap will be larger than that and you'll ahve no issues. Esp. at common power levels.

Jun 9, 2020 | 11:41 AM

#52

tblentrprz

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For your ring gap reading pleasure. Lot's of engine builders provide comments. Note - this is NA based info. https://www.yellowbullet.com/threads...-gaps.2629768/

Jun 9, 2020 | 12:13 PM

#53

ddnspider

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From: FL

Quote:

Originally Posted by tblentrprz

For your ring gap reading pleasure. Lot's of engine builders provide comments. Note - this is NA based info. https://www.yellowbullet.com/threads...-gaps.2629768/

Several comments in there for boosted stuff.....including the factory recommended ring gaps sheets calling out .007 x bore for mid boost stuff.

Jun 9, 2020 | 06:09 PM

#54

jimmyg

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What about 93 water/ meth? I have a forged. Ls2 SB. Should be around 10to 1. Rings are .20/.22 . I was gonna max out my whipple on it

Jun 9, 2020 | 07:23 PM

#55

ddnspider

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From: FL

I would run a larger gap if it's already apart but that's me. Depends how much meth you're going to spray.

Jun 9, 2020 | 10:23 PM

#56

Dragframe

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From: wyoming @ 12000 DA...

Quote:

Originally Posted by Mavn

E85 fuel
2 walbro 450s $200
Amazon-8 - $80
Snake eater 1500s - $400

Profit.?

I have a walbro 450 in the car. As well as -8 feed, -6 return, magnafuel regulator, Holley terminator x, etc etc

But I’m also out of work waiting for surgery on my guts and left knee. Tons of bills and fighting workers compensation.

So unless you gunna trade me out injectors, and donate another fuel pump... my *** gotta poor boy everything I can lol. Life’s good though 🤙