Ok ready to get flamed!

95StangMX · July 24th, 2008, 12:00 PM

I know you guys are probably gonna light me up on this one.....I have a CHP 347 stroker kit with probe pistons and trick flow co1's heads anybody know what compression I should be at? or what other specs do you need to know?

dr.gonzo! · July 24th, 2008, 12:02 PM

10 something

11-1

boostjunkie · July 24th, 2008, 12:09 PM

11-1, or 10! It really doesn't help me I could use some specs?

r.barn · July 24th, 2008, 12:27 PM

need piston dish size
cylinder head combustion chamber size

ryans88gt · July 24th, 2008, 12:38 PM

^

+

head gasket used (bore and thickness)
piston to bore clearance
Piston to deck clearance
cylinder chamfer

boostjunkie · July 24th, 2008, 12:45 PM

dr.gonzo! · July 24th, 2008, 01:06 PM

what about this one?

boostjunkie · July 24th, 2008, 01:21 PM

Originally Posted by dr.gonzo

what about this one?

No this?

qwkvert · July 24th, 2008, 02:25 PM

just call CHP and ask them....but be prepared to tell them the head gasket and heads you are using. they are the only ones who will tell you for sure without breaking out some measuring tools to find out how far in the hole you are, if the deck has been milled etc...........

r.barn · July 24th, 2008, 03:28 PM

you can get with in 1/10th of the right number with just
piston dish and combustion chamber and guessing some of the other
numbers like 0 deck height, .039 compressed head gasket and .030 over bore, ect.

That will get you close enough for the most part.

There are tons of online calculators to put the numbers into

95StangMX · July 24th, 2008, 09:09 PM

thanks....woody kinda put together the combo so I am sure I can just call him but wanted to know how to figure it but sounds like a pain in the ass so I think I will just ask....lol

95StangMX · July 24th, 2008, 09:10 PM

what compression range do I want to be in to run a 1-150 shot of gas?

91cobra5.0 · July 24th, 2008, 09:58 PM

is it better to run thicker or thinner gaskets?

fogged306 · July 25th, 2008, 01:24 AM

You don't have to worry about compression as much with nitrous as you would with boost. You'll be fine, just back the timing off a couple degrees.

1slo5.0 · July 25th, 2008, 09:55 AM

Originally Posted by 95StangMX

I know you guys are probably gonna light me up on this one.....I have a CHP 347 stroker kit with probe pistons and trick flow co1's heads anybody know what compression I should be at? or what other specs do you need to know?

Assuming a flat top piston at zero deck and a standard .040 thick, 4.100 bore head gasket you will be at 9.75:1.

1slo5.0 · July 25th, 2008, 09:55 AM

Originally Posted by 95StangMX

what compression range do I want to be in to run a 1-150 shot of gas?

Doesn't matter at all.

95StangMX · July 25th, 2008, 04:37 PM

the numbers on the pistons are as follows 1.175/4.030/.912/-4.0cc does that help... and darrel or anyone else know is there a certain size head gasket I should run?

1slo5.0 · July 25th, 2008, 07:12 PM

Originally Posted by 95StangMX

the numbers on the pistons are as follows 1.175/4.030/.912/-4.0cc does that help... and darrel or anyone else know is there a certain size head gasket I should run?

I figured a -6cc valve relief on a flat top piston so the -4cc changes things a bit. Assuming zero deck and a standard .040 thick x 4.100 bore head gasket you will be at 9.97:1.

Standard head gaskets will be fine. If you want more compression, mill the heads.

ryans88gt · July 25th, 2008, 08:08 PM

Thin gaskets are not great b/c they do not seal well. Gaskets thicker than 0.050 cause excessive detonation due to loss of quench.

1slo5.0 · July 25th, 2008, 08:15 PM

Originally Posted by ryans88gt

Thin gaskets are not great b/c they do not seal well. Gaskets thicker than 0.050 cause excessive detonation due to loss of quench.

+1

The quench area is a big issue that nobody ever thinks of.

July 24th, 2008, 12:00 PM	#1
95StangMX MM Fanatic 95 Mustang GT depends how many people are pushing Join Date: Oct 2007 Location: Playa del Carmen, Mexico Posts: 3,243 iTrader: 0 reviews	Ok ready to get flamed! I know you guys are probably gonna light me up on this one.....I have a CHP 347 stroker kit with probe pistons and trick flow co1's heads anybody know what compression I should be at? or what other specs do you need to know?

July 24th, 2008, 12:27 PM	#4
r.barn Regular 1989 LX Vert - 1993 Notch Fast Join Date: May 2008 Location: Houston Posts: 398 iTrader: 0 reviews	need piston dish size cylinder head combustion chamber size __________________ The last President elected in anger of previous President was ....... Jimmy Carter God Help Us

July 24th, 2008, 12:38 PM	#5
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	^ + head gasket used (bore and thickness) piston to bore clearance Piston to deck clearance cylinder chamfer __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

July 24th, 2008, 02:25 PM	#9
qwkvert Regular 1989 lx convertible 10.87 @ 128 ( old 302 combo) Join Date: Jan 2008 Location: Mt Juliet,TN Posts: 277 iTrader: 1 reviews	just call CHP and ask them....but be prepared to tell them the head gasket and heads you are using. they are the only ones who will tell you for sure without breaking out some measuring tools to find out how far in the hole you are, if the deck has been milled etc........... __________________ A bigger motor with a lot of parts they said would make me go faster......

July 24th, 2008, 03:28 PM	#10
r.barn Regular 1989 LX Vert - 1993 Notch Fast Join Date: May 2008 Location: Houston Posts: 398 iTrader: 0 reviews	you can get with in 1/10th of the right number with just piston dish and combustion chamber and guessing some of the other numbers like 0 deck height, .039 compressed head gasket and .030 over bore, ect. That will get you close enough for the most part. There are tons of online calculators to put the numbers into __________________ The last President elected in anger of previous President was ....... Jimmy Carter God Help Us

July 24th, 2008, 12:09 PM	#3
boostjunkie Newbie 93 LX Conv dead slow! Join Date: Jul 2008 Location: Im a gyspy!(EVERY WHERE) Posts: 22 iTrader: 0 reviews	11-1, or 10! It really doesn't help me I could use some specs?

July 24th, 2008, 12:45 PM	#6
boostjunkie Newbie 93 LX Conv dead slow! Join Date: Jul 2008 Location: Im a gyspy!(EVERY WHERE) Posts: 22 iTrader: 0 reviews

July 24th, 2008, 09:09 PM	#11
95StangMX MM Fanatic 95 Mustang GT depends how many people are pushing Join Date: Oct 2007 Location: Playa del Carmen, Mexico Posts: 3,243 iTrader: 0 reviews	thanks....woody kinda put together the combo so I am sure I can just call him but wanted to know how to figure it but sounds like a pain in the ass so I think I will just ask....lol

July 24th, 2008, 09:10 PM	#12
95StangMX MM Fanatic 95 Mustang GT depends how many people are pushing Join Date: Oct 2007 Location: Playa del Carmen, Mexico Posts: 3,243 iTrader: 0 reviews	what compression range do I want to be in to run a 1-150 shot of gas?

July 24th, 2008, 09:58 PM	#13
91cobra5.0 Hardcore Enthusiast 98 Cobra Join Date: Jan 2008 Location: Bay Area, Ca Posts: 2,057 iTrader: 0 reviews	is it better to run thicker or thinner gaskets?

July 25th, 2008, 01:24 AM	#14
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	You don't have to worry about compression as much with nitrous as you would with boost. You'll be fine, just back the timing off a couple degrees.

July 25th, 2008, 04:37 PM	#17
95StangMX MM Fanatic 95 Mustang GT depends how many people are pushing Join Date: Oct 2007 Location: Playa del Carmen, Mexico Posts: 3,243 iTrader: 0 reviews	the numbers on the pistons are as follows 1.175/4.030/.912/-4.0cc does that help... and darrel or anyone else know is there a certain size head gasket I should run?

July 25th, 2008, 08:08 PM	#19
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	Thin gaskets are not great b/c they do not seal well. Gaskets thicker than 0.050 cause excessive detonation due to loss of quench. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

LinkBacks (?) LinkBack to this Thread: http://www.moddedmustangs.com/forums/5-0-mustangs/81568-ok-ready-get-flamed.html
Posted By	For	Type	Date
Ok ready to get flamed!	This thread	Refback	July 24th, 2008 12:19 PM

Threads Similar to: Ok ready to get flamed!
Thread	Thread Starter	Forum	Replies	Last Post
I'm about to get hardcore flamed...	Dansby	The Clubhouse	13	April 5th, 2008 02:20 AM
I'm ready to do it	gooberhead320	The Clubhouse	69	April 2nd, 2008 08:52 PM
All ready!	JASonic	The Clubhouse	7	March 23rd, 2008 01:20 AM
tell me are you ready?	nba1341	The Clubhouse	9	February 25th, 2008 06:01 PM
whose ready for some ...	thetrooper31	The Clubhouse	30	September 8th, 2007 11:14 PM

All times are GMT -4. The time now is 06:11 AM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.