BMW M3 Forum
BMW M3 Forum BMW M3 Gallery BMW M3 Reviews BMW M3 Social Groups BMW M3 Chat M3Forum Sponsors >>
Loading


Mobile M3forum
Go Back   BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X) > BMW M3 Discussions > E36 M3 (1992-1999)
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All AlbumsBlogs Garage Search Today's Posts Mark Forums Read Calendar FAQ

E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


Reply
 
Thread Tools Display Modes
Old Thu, May-26-2005, 03:32:03 PM   #1
e36_m3_Turbo
e36_m3_Turbo
 
e36_m3_Turbo's Avatar
 
Join Date: Oct 2003
Posts: 636
Reputation: 0 e36_m3_Turbo has disabled reputation
Location: Ventura County,Ca

United States




Default High Compression Pistons?

Are they worth it. 13:1 ratio. Would there be any performance gains.

Side Note: Im ording some AA headers this Friday.
__________________
Jump to top e36_m3_Turbo is offline   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Thu, May-26-2005, 03:57:36 PM   #2
Sirius
How many licks..
 
Sirius's Avatar
 
Join Date: Mar 2004
Posts: 46,425
In the garage:
Reputation: 45 Sirius has disabled reputation

United States




Default

I would imagine that for the cost of labor to install them, you may be better off getting cams.
__________________
♪♫♪♪♫♪ Trevor ♪♫♪♪♫♪

97' M3. '10 R6.
Jump to top Sirius is offline   Reply With Quote
Old Thu, May-26-2005, 03:58:12 PM   #3
95RogueM3
^Needs More Garage Space..
 
Join Date: Jan 2003
Age: 29
Posts: 2,998
Reputation: 0 95RogueM3 has disabled reputation
Location: Richmond, VA

United States




Default

Quote:
Originally Posted by e36_m3_Turbo
Are they worth it. 13:1 ratio. Would there be any performance gains.

Side Note: Im ording some AA headers this Friday.
13:1 is WAY WAY too high. Stock is 10.5...most high compression motors dont go above 12:1
__________________
'95 M3 - 230whp (Mustang Dyno)
'98 M3 Sedan - 2JZ Swap - 775whp, 750wtq - More to Come
'03 996 Turbo - 435whp, 500wtq

Jump to top 95RogueM3 is offline   Reply With Quote
Old Thu, May-26-2005, 04:11:44 PM   #4
e36_m3_Turbo
e36_m3_Turbo
 
e36_m3_Turbo's Avatar
 
Join Date: Oct 2003
Posts: 636
Reputation: 0 e36_m3_Turbo has disabled reputation
Location: Ventura County,Ca

United States




Default

Then why the hell are there 13:1 then? Lol. Makes no sense. Ok what would performance gains be on the 12:1? And Siruis, cam kit is in the near future also. I was thinking maybe it would be an add on of the cam kit.
__________________
Jump to top e36_m3_Turbo is offline   Reply With Quote
Old Thu, May-26-2005, 04:12:51 PM   #5
e36_m3_Turbo
e36_m3_Turbo
 
e36_m3_Turbo's Avatar
 
Join Date: Oct 2003
Posts: 636
Reputation: 0 e36_m3_Turbo has disabled reputation
Location: Ventura County,Ca

United States




Default

Wait wait wait, if I also added a head gasket to lower the compression, then I would be fine, no?
__________________
Jump to top e36_m3_Turbo is offline   Reply With Quote
Old Thu, May-26-2005, 04:15:43 PM   #6
Sirius
How many licks..
 
Sirius's Avatar
 
Join Date: Mar 2004
Posts: 46,425
In the garage:
Reputation: 45 Sirius has disabled reputation

United States




Default

I don't know much about engine internals, but I do know that using a headgasket to lower compression is a half-assed way to do it.
__________________
♪♫♪♪♫♪ Trevor ♪♫♪♪♫♪

97' M3. '10 R6.
Jump to top Sirius is offline   Reply With Quote
Old Thu, May-26-2005, 04:19:57 PM   #7
badgtho
Team Nexen Racing
 
badgtho's Avatar
 
Join Date: Mar 2005
Posts: 13,074
Reputation: 0 badgtho is just really nice

United States




Default

jesus! 13.5:1 never never never on pump gas! your cats will not function, and i have a feeling that your knock sensor will not know what hit it. not to mentio your head, headgasket, rods and crank are not designed for that much compression. the 10.5 that the M has to start is very high.. in fact i dont know of any production vehicles that are significantly higher.
__________________

Current - '99 estoril/mulberry coupe || Past - '97 alpine/anthrazit coupe || 10,000+ post club || OG club

Quote:
Badgtho can be rude but he certainly knows more than you.
A Moment of Zen, brought to you by BadGTho:
Quote:
Originally Posted by salty View Post
At any rate, our MDX is running 5w20 and it can tow 3500 pounds.
Jump to top badgtho is offline   Reply With Quote
Old Thu, May-26-2005, 04:21:17 PM   #8
e36_m3_Turbo
e36_m3_Turbo
 
e36_m3_Turbo's Avatar
 
Join Date: Oct 2003
Posts: 636
Reputation: 0 e36_m3_Turbo has disabled reputation
Location: Ventura County,Ca

United States




Default

Ok. Did you see my side note? I was thinking it would give me some extra N/A power with the cam kit.
__________________
Jump to top e36_m3_Turbo is offline   Reply With Quote
Old Thu, May-26-2005, 04:21:43 PM   #9
badgtho
Team Nexen Racing
 
badgtho's Avatar
 
Join Date: Mar 2005
Posts: 13,074
Reputation: 0 badgtho is just really nice

United States




Default

so wait.. now you want to raise the compression with pistons, then lower it with a gasket.. that will blow every 30 seconds unless you o ring it. i wouldn;t even do that on a dirt bike. one can raise compression slightly by decking the head. going to a higher compression or dome top piston will raise it siginificantly, more so than your engine is designed for.
__________________

Current - '99 estoril/mulberry coupe || Past - '97 alpine/anthrazit coupe || 10,000+ post club || OG club

Quote:
Badgtho can be rude but he certainly knows more than you.
A Moment of Zen, brought to you by BadGTho:
Quote:
Originally Posted by salty View Post
At any rate, our MDX is running 5w20 and it can tow 3500 pounds.
Jump to top badgtho is offline   Reply With Quote
Old Thu, May-26-2005, 04:23:22 PM   #10
badgtho
Team Nexen Racing
 
badgtho's Avatar
 
Join Date: Mar 2005
Posts: 13,074
Reputation: 0 badgtho is just really nice

United States




Default

some extra power!!! a jump of 3:1! you would have a monster if it held together// and you would need like 105 octane! open a book on the internal combustion engine, read it, then rethink.

at 13.5 why not make it a diesel?
__________________

Current - '99 estoril/mulberry coupe || Past - '97 alpine/anthrazit coupe || 10,000+ post club || OG club

Quote:
Badgtho can be rude but he certainly knows more than you.
A Moment of Zen, brought to you by BadGTho:
Quote:
Originally Posted by salty View Post
At any rate, our MDX is running 5w20 and it can tow 3500 pounds.
Jump to top badgtho is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Thinking of rebuilding engine with high comp pistons mugm3 E36 M3 (1992-1999) 21 Tue, May-06-2008 11:45:05 PM
High compression & Mid Boost Pressure TWINTURBOM3 Forced Induction (F/I) 38 Sun, Jul-22-2007 06:40:18 AM
13:1 Compression Pistons allmotorM3 General BMW Discussion 2 Mon, Apr-17-2006 05:05:00 AM
New high-compression N/A kit from BHS Divexxtreme E46 M3 (2001-2006) 161 Fri, Oct-14-2005 02:41:11 PM
Drove my BHS High-Compression Animal... panas001 E46 M3 (2001-2006) 58 Sun, May-01-2005 03:13:04 PM



All times are GMT. The time now is 09:25:42 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
M3Forum.com and M3forum.net is in no way sponsored, endorsed or affiliated by or with BMW NA / BMW AG or any of it's subsidiaries or vendors.
BMW and M3 (E90 M3 | E92 M3 | E93 M3 | E46 M3 | E36 M3 | E30 M3) are registered trademarks of BMW AG.
M3Forum Terms of Service
Copyright 1999-2014 M3Forum.com
Discussing High Compression Pistons? in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)