Broken rings - which route

[engineermike]

Looks like low compression is your thing!

Maximum power on pump gasoline with reliability is my thing! So, I guess so...

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[80FoxCoupe]

Maximum power on pump gasoline with reliability is my thing! So, I guess so...

See you in the rear view!

 

[SolarFlare]

See you in the rear view!

Quoted for truth.

a lot of those street cars listed at 9.x:1 compression need close to 20psi to compete with coyotes at 12psi.

 

[engineermike]

See you in the rear view!

Do you actually think your car is faster than anything with lower compression, or are you just "funnin'"?

a lot of those street cars listed at 9.x:1 compression need close to 20psi to compete with coyotes at 12psi.

Conversely, couldn't they say that you need 11/1 compression and E85 just to compete with their pump gas 9/1 motors? They are running lower peak cylinder pressure (more reliable) and higher average pressure (more power and torque).

So you guys really believe that the teams of engineers and technicians at over a dozen OEMs, their performance divisions (including racing), and even the marine performance industry are all just flat wrong on the entire compression and boost on pump gasoline issue? Even though their products absolutely demolish the supercharged high-compression Coyote in both specific output and reliability?

 

[SolarFlare]

Do you actually think your car is faster than anything with lower compression, or are you just "funnin'"?

You must not know about my boy 80fox...

Conversely, couldn't they say that you need 11/1 compression and E85 just to compete with their pump gas 9/1 motors? They are running lower peak cylinder pressure (more reliable) and higher average pressure (more power and torque).

for the sake of a nice conversation...No, I do not believe Im faster than everyone, that's the way the car scene is. WITH THAT SAID...find me some data, track/dyno vids, slips, etc of SBE pump gas 93 octane (I know it might be difficult because the use of octane boosters nowadays) LSA, LS9, Demon, Hellcats, Shelbys running mid 9s trapping more than 145mph or making say... low 800s to 900whp.

I mean....the demon itself needs a race gas tune to get to 760-770whp at 14psi.

 

[SolarFlare]

Not to worry mr Mike. I’ve gathered some stock low compression hero cars on pump gas (some aided by meth) with numbers for you....

--First up is the mighty LSA camaro Zl1 with Heads and cam package, meth, pullies, bolts ons and of course pump gas making 770 at 15psi

--Next upanother low compression LSA with ported LSA blower with pulley and bolt ons, NOT aided by heads and cam making 710whp on E85 LOL

--Following that another badass contender the LT4 with cam, ported blower, pulley and meth making 796 whp with meth at 16psi

--Another LT4 with heads and cam, bolt ons pulley making 758whp PUMP GAS ONLY

--Moving up to the LS9 we have a ZR1 with bolt ons and pulley making 701 with E50 mix LOL

--Then the badass trinity with bolt ons and pulley AND killer chiller making 710whp on pump gas

--Moving to hellcats, tune only hellcat making 680whp on pump (stock 11psi)

--Then a full bolt on hellcat with pullies and 93oct making 783whp.

 

[engineermike]

...find me some data, track/dyno vids, slips, etc of SBE pump gas 93 octane (I know it might be difficult because the use of octane boosters nowadays) LSA, LS9, Demon, Hellcats, Shelbys running mid 9s trapping more than 145mph or making say... low 800s to 900whp..

Why do I have to find a true pump gasoline muscle car running 145 mph? Has a high-compression boosted Coyote run 144 on true pump gasoline? Several on the Hellcat forum seem to be claiming 137-139 on true 93 only, but I can't guarantee it is so. If they are honest, that only puts them 8 or 10 mph faster than a stock-compression true pump gas boosted Coyote. Show me a full weight, true pump gas, boosted, stock-compression Coyote pulling 160. (No, I'm not being serious.)

The factory stock cars pulling 140+ on true pump gas are the likes of the McLaren 720S at 148 and 8.7/1 compression in a boosted 4.0 liter V8. The Koenigsegg Regerra runs about the same with a 9.3/1 compression boosted 5.0 liter V8. The pattern continues I see. I wonder why these supercar makers opted for such horribly low compression.

....the demon itself needs a race gas tune to get to 760-770whp at 14psi.

Interesting you bring up the Demon. It runs slightly further from the limit than the stock GT500. In order to get significantly more power safely on pump gas from either one would require further lowering of the compression. Dropping to 9/1 like, say, the Ford GT, would allow another 5%. Adding GDI would allow an increase of over 20%.

 

[SolarFlare]

Feel free to lmk why all those cars above even though low compression via OEM aren’t putting down blistering numbers on pump gas even when pullied to 15+ psi

 

[SolarFlare]

Why do I have to find a true pump gasoline muscle car running 145 mph? Has a high-compression boosted Coyote run 144 on true pump gasoline? %.

Answer to that is quite simple....you stated "Conversely, couldn't they say that you need high compression and E85 just to compete with their pump gas 9/1 motors".....and the truth is they cant make that statement because the grand majority of those cars, on pump gas, actually cant compete with me.

 

[Crackerjack17]

Ill stick with lower compression to increase reliability. I know this doesnt have anything to do with coyotes, but aren't top fuel dragsters 6.5 to 7:1 compression ratio?

 

[SolarFlare]

I don't doubt they are....but at what boost? 50, 60, 70+psi?

 

[80FoxCoupe]

Do you actually think your car is faster than anything with lower compression, or are you just "funnin'"?



Conversely, couldn't they say that you need 11/1 compression and E85 just to compete with their pump gas 9/1 motors? They are running lower peak cylinder pressure (more reliable) and higher average pressure (more power and torque).

So you guys really believe that the teams of engineers and technicians at over a dozen OEMs, their performance divisions (including racing), and even the marine performance industry are all just flat wrong on the entire compression and boost on pump gasoline issue? Even though their products absolutely demolish the supercharged high-compression Coyote in both specific output and reliability?

I'm just getting you all fired up. You like low compression on pump gas, that's fine. You won't talk me into it. I like going fast too much to step backwards.

 

[SolarFlare]

I'm just getting you all fired up. You like low compression on pump gas, that's fine. You won't talk me into it. I like going fast too much to step backwards.

You must love competing vs pump gas LSA and bolt on pump gas shelbys lol

 

[engineermike]

I'm just getting you all fired up. You like low compression on pump gas, that's fine. You won't talk me into it. I like going fast too much to step backwards.

I'm not trying to talk you into anything and I won't knock the benefits of E85. It absolutely unleashes lots of power especially if you're stuck with high compression. That's a matter of personal preference and it's just not for me. I had a methanol injection kit on my last car that pulled 146 in the quarter and absolutely hated having to rely on it....but that's just me!

 

[SolarFlare]

Car is also more reliable on E85. Lol since reliability is what we’re after here, not going fast.

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