How much is too much?

I8ACMRO · January 18th, 2010, 12:51 AM

How high of a compression ratio can I run on gay ASS 91 octane? I found a guy selling a shortblock nearby for $1600 but it has almost a 12:1 CR (11.92:1 to be exact).

F8L GT · January 18th, 2010, 12:56 AM

i'd say around 10. my truck is 10.5 and runs on 93

I8ACMRO · January 18th, 2010, 12:59 AM

Originally Posted by F8L GT

i'd say around 10. my truck is 10.5 and runs on 93

There's no way it's THAT low. I know guys on close to 11:1 on 91. I'm just wondering though if the 11:1 is as high as I can go or if 12:1 can be pulled off w/o having to go to race gas.

koessl · January 18th, 2010, 01:05 AM

looks like alot of people are calling for 11:1 max, but recommending 93 for over 10.5:1 though.

thats just what i gathered from a short google search.

F8L GT · January 18th, 2010, 01:07 AM

, i just did the same

I8ACMRO · January 18th, 2010, 10:03 AM

Hmm well read up a little bit and one guy was saying you could pull off 12:1 CR BUT you'd have to pull timing just to make it like pump gas.

SWEET2KSTANG · January 18th, 2010, 11:16 PM

you can run any compression just about on pump gas, you just cant utilize it on high compression.

BakerFX4 · January 18th, 2010, 11:54 PM

yeah i would think you could run it but it just wont be able to get the most out of it. Im sure it will drive though. Remember I8... You have to hit 400rwhp n/a so you better be going high compression like a mother F-er! LOL!!!!

I8ACMRO · January 18th, 2010, 11:56 PM

Originally Posted by BakerFX4

yeah i would think you could run it but it just wont be able to get the most out of it. Im sure it will drive though. Remember I8... You have to hit 400rwhp n/a so you better be going high compression like a mother F-er! LOL!!!!

Ya ya Baker. lol. Well the only thing I don't like about the motor I found is that it is a "true" 4.6, not bored over or stroked, and I wanna do a stroker motor...

BakerFX4 · January 18th, 2010, 11:59 PM

sounds to me like you need to buy you a rotating assembly and get at it. Dont buy one already built. Build it how you want it!

I8ACMRO · January 19th, 2010, 12:01 AM

Originally Posted by BakerFX4

sounds to me like you need to buy you a rotating assembly and get at it. Dont buy one already built. Build it how you want it!

Ya that's what I'm thinking. I'm debating on finding a Teksid block or a current production Aluminum block for it. Where would be a good place to get a rotating assembly at? I know DSS Racing sells a set of their pistons w/ valve reliefs for the new TFS heads but I'm wondering if I can get that from somewhere else, say like MMR.

BakerFX4 · January 19th, 2010, 12:04 AM

i got my kit from MMR and i will tell you... If you go on corral and talk to Mark@MMR, you will be able to work something out. He WILL come off his prices. He is the owner so he can do that. Just talk to him and see what he can do. Go on Corral.net and PM him in one of his classifieds threads.

I8ACMRO · January 19th, 2010, 12:05 AM

Originally Posted by BakerFX4

i got my kit from MMR and i will tell you... If you go on corral and talk to Mark@MMR, you will be able to work something out. He WILL come off his prices. He is the owner so he can do that. Just talk to him and see what he can do. Go on Corral.net and PM him in one of his classifieds threads.

Right on bro thanks! I was just on MMR and was like 'Shit! The fucking 950 Rotating Assembly is $2k!' lol

BakerFX4 · January 19th, 2010, 12:22 AM

Im sure he can work on that price!

limited · January 19th, 2010, 12:30 AM

Originally Posted by SWEET2KSTANG

you can run any compression just about on pump gas, you just cant utilize it on high compression.

+1, you can run 14:1 but with like 2* of timing

F8L GT · January 19th, 2010, 01:01 AM

Originally Posted by limited

+1, you can run 14:1 but with like 2* of timing

Unless you run E85

limited · January 19th, 2010, 01:03 AM

Originally Posted by F8L GT

Unless you run E85

true, true I wish it was readily avail. around here,i would be all over it

F8L GT · January 19th, 2010, 01:04 AM

Theres a few places around me that have it. but its more expensive now than regular is lol

January 18th, 2010, 12:56 AM	#2
F8L GT !FACEPLATED! 2002 Mustang GT 7.84 @ 86.01 Join Date: Jul 2008 Location: Upper Michigan Posts: 12,917 iTrader: 13 reviews	i'd say around 10. my truck is 10.5 and runs on 93 __________________ MM Bracket Racing Crew Co-Founder ~Its a Drag Car, Not a Show Car~ LINK-->Custom Race Transmission Build<--LINK

January 18th, 2010, 01:05 AM	#4
koessl Hardcore Enthusiast 1998 GT suckaaa 4 tickets @ 1 stop Join Date: Jul 2009 Location: Illinois Posts: 1,385 iTrader: 0 reviews	looks like alot of people are calling for 11:1 max, but recommending 93 for over 10.5:1 though. thats just what i gathered from a short google search. __________________ Military Crew Completely stock... I promise.

January 18th, 2010, 01:07 AM	#5
F8L GT !FACEPLATED! 2002 Mustang GT 7.84 @ 86.01 Join Date: Jul 2008 Location: Upper Michigan Posts: 12,917 iTrader: 13 reviews	, i just did the same __________________ MM Bracket Racing Crew Co-Founder ~Its a Drag Car, Not a Show Car~ LINK-->Custom Race Transmission Build<--LINK

January 18th, 2010, 11:16 PM	#7
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,540 iTrader: 8 reviews	you can run any compression just about on pump gas, you just cant utilize it on high compression. __________________ project warhorse under construction wagon burner under construction as well (04 lightning) being built by MP2 Performance

January 18th, 2010, 11:54 PM	#8
BakerFX4 I Post Entirely Way Too Much Join Date: Dec 2007 Location: Louisiana Posts: 16,251 iTrader: 14 reviews	yeah i would think you could run it but it just wont be able to get the most out of it. Im sure it will drive though. Remember I8... You have to hit 400rwhp n/a so you better be going high compression like a mother F-er! LOL!!!! __________________ 4.75 MMR 900se Livernois ported heads HP 292s blower cams Procharger D1sc at 20+ psi IW 15% OD pulley (and more bolt ons) E85 Tune/numbers coming shortly!!

January 18th, 2010, 11:59 PM	#10
BakerFX4 I Post Entirely Way Too Much Join Date: Dec 2007 Location: Louisiana Posts: 16,251 iTrader: 14 reviews	sounds to me like you need to buy you a rotating assembly and get at it. Dont buy one already built. Build it how you want it! __________________ 4.75 MMR 900se Livernois ported heads HP 292s blower cams Procharger D1sc at 20+ psi IW 15% OD pulley (and more bolt ons) E85 Tune/numbers coming shortly!!

January 19th, 2010, 12:04 AM	#12
BakerFX4 I Post Entirely Way Too Much Join Date: Dec 2007 Location: Louisiana Posts: 16,251 iTrader: 14 reviews	i got my kit from MMR and i will tell you... If you go on corral and talk to Mark@MMR, you will be able to work something out. He WILL come off his prices. He is the owner so he can do that. Just talk to him and see what he can do. Go on Corral.net and PM him in one of his classifieds threads. __________________ 4.75 MMR 900se Livernois ported heads HP 292s blower cams Procharger D1sc at 20+ psi IW 15% OD pulley (and more bolt ons) E85 Tune/numbers coming shortly!!

January 19th, 2010, 12:22 AM	#14
BakerFX4 I Post Entirely Way Too Much Join Date: Dec 2007 Location: Louisiana Posts: 16,251 iTrader: 14 reviews	Im sure he can work on that price! __________________ 4.75 MMR 900se Livernois ported heads HP 292s blower cams Procharger D1sc at 20+ psi IW 15% OD pulley (and more bolt ons) E85 Tune/numbers coming shortly!!

January 19th, 2010, 01:04 AM	#18
F8L GT !FACEPLATED! 2002 Mustang GT 7.84 @ 86.01 Join Date: Jul 2008 Location: Upper Michigan Posts: 12,917 iTrader: 13 reviews	Theres a few places around me that have it. but its more expensive now than regular is lol __________________ MM Bracket Racing Crew Co-Founder ~Its a Drag Car, Not a Show Car~ LINK-->Custom Race Transmission Build<--LINK

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