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 > E46 M3 (2001-2006)
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All Albums Garage Search Today's Posts Mark Forums Read Calendar FAQ

E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


Reply
 
Thread Tools Display Modes
Old Sun, Oct-21-2018, 09:26:15 AM   #41
mpwr92
Registered User
 
Join Date: Sep 2013
Posts: 58
Reputation: 0 mpwr92 is on a distinguished road

United States




Default Re: High compression S54 - Questions abound

Before bottom end build made 242rwkw engine was pretty much 385bhp I’m not expecting much more power but better torque I’m going up hills with ease compared to before.
Jump to top mpwr92 is online now   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Sun, Oct-21-2018, 09:27:52 AM   #42
mpwr92
Registered User
 
Join Date: Sep 2013
Posts: 58
Reputation: 0 mpwr92 is on a distinguished road

United States




Default Re: High compression S54 - Questions abound

I find Paul Claude is the best to tune these cams and he has tuned a fair few with 12.5 comp with these cams on pump fuel without issue or ignition retard best toy all to him.
Jump to top mpwr92 is online now   Reply With Quote
Old Sun, Oct-21-2018, 08:29:56 PM   #43
Beavis
Registered User
 
Join Date: Feb 2005
Posts: 389
Reputation: 0 Beavis will become famous soon enough





Default Re: High compression S54 - Questions abound

Quote:
Originally Posted by Cronenberged View Post
I would have to dig through the forum but someone did a 3.5L stroker with a 12.1 comp.


Probably mine, 3.5L at 12-1 cr
10 years and 17000 miles pure N/A ecstasy.
Jump to top Beavis is offline   Reply With Quote
Old Sun, Oct-21-2018, 08:57:14 PM   #44
m3 hal
Registered User
 
Join Date: Jan 2006
Posts: 21,628
Reputation: 0 m3 hal will become famous soon enough

United States




Default Re: High compression S54 - Questions abound

Quote:
Originally Posted by ctres View Post
We cannot simply say that the S65 had a 12:1 ratio, so the S54 can also benefit from it. Differences in combustion chamber design play a role here, and automakers have generally migrated towards a faster burn chamber design, which allows for a higher compression ratio.
I've always wondered about the influence of aftermarket pistons on OE combustion chamber designs. Same with doing an overbore (though I know the S54 doesn't have much room for an overbore anyway). Are those negligible concerns or?
Jump to top m3 hal is offline   Reply With Quote
Old Sun, Oct-21-2018, 09:02:01 PM   #45
stash1
Registered User
 
Join Date: Dec 2008
Posts: 4,822
In the garage:
Reputation: 0 stash1 is on a distinguished road
Location: Owings Mills, MD.

United States




Default Re: High compression S54 - Questions abound

Quote:
Originally Posted by Beavis View Post
Probably mine, 3.5L at 12-1 cr
10 years and 17000 miles pure N/A ecstasy.
Yep, Beavis was the first 'forum' car that I remember reading/drooling over his stroker build, then I did a head/cam build, then finally Mike (aka Mister m) did a 3.4 build.

EDIT: Where in the hell have you (Beavis) been btw-lol
__________________
'04 AW/IR...some mods

Last edited by stash1; Sun, Oct-21-2018 at 09:05:49 PM.
Jump to top stash1 is offline   Reply With Quote
Old Sun, Oct-21-2018, 09:07:37 PM   #46
HassanEido
Registered User
 
HassanEido's Avatar
 
Join Date: Oct 2014
Posts: 3,330
In the garage:
Reputation: 0 HassanEido is on a distinguished road

Lebanon




Default Re: High compression S54 - Questions abound

Quote:
Originally Posted by mpwr92 View Post
Still running in so havenít had it on the dyno will be tuned before Christmas but feels very diffrent to before with same setup stock
Bottom end. Built a fair few
S54ís in my life.
Expect 25 to 30 hp more tuned
__________________

Mods:
-Custom CF airbox
-SSV2 catless headers, Custom 2.5" dual sec1, Custom sec2 2.5" dual with e9xM X pipe, SuperSprint Race inspired custom section 3..
-Cat Cams 280 272.
-Custom dyno tune
-Tms pulleys and electric fan conversion
364.1 whp 287.8 wtq

Custom exhaust thread and dyno http://m3forum.net/m3forum/showthread.php?t=569086
Cams thread and dyno http://m3forum.net/m3forum/showthread.php?t=554439
Custom cf airbox thread http://m3forum.net/m3forum/showthread.php?t=595180
Why not to use after market bearings with surfacetreatments and /or increased clearance
http://www.m3forum.net/m3forum/showp...4&postcount=10
Jump to top HassanEido is online now   Reply With Quote
Old Sun, Oct-21-2018, 09:51:09 PM   #47
Cronenberged
Registered User
 
Cronenberged's Avatar
 
Join Date: Nov 2011
Posts: 664
In the garage:
Reputation: 0 Cronenberged is on a distinguished road
Location: East

United States




Default Re: High compression S54 - Questions abound

Quote:
Originally Posted by Beavis View Post
Probably mine, 3.5L at 12-1 cr
10 years and 17000 miles pure N/A ecstasy.
Yeah it was yours Beavis.
__________________
Formerly known as ///M3_Letty
Jump to top Cronenberged is offline   Reply With Quote
Old Sun, Oct-21-2018, 10:07:26 PM   #48
bayern qca
Registered User
 
bayern qca's Avatar
 
Join Date: May 2014
Posts: 130
In the garage:
Reputation: 0 bayern qca is on a distinguished road

United States




Default Re: High compression S54 - Questions abound

I just finished up a 3.4L stroker build with 288/280 cams and 12.3 CR pistons. I needed to get new rods because of the new crank, so OE was not really even an option for me. Iím not sure if the OE rods would be ok or not. I would guess they would be as long as you werenít shooting for really big power numbers.

I use 93 octane pump gas in my car without any trouble at all. Higher octane gas would be able to make more power, but a huge Hp build was not my primary goal. There is always a trade off between longevity and power. My build tried to keep some or most of the longevity while giving the car a little more 2018-type power.


Sent from my iPhone using Tapatalk
Jump to top bayern qca is offline   Reply With Quote
Old Sun, Oct-21-2018, 11:43:34 PM   #49
ggrslc
Registered User
 
Join Date: Sep 2017
Posts: 45
Reputation: 0 ggrslc is on a distinguished road

United States




Default Re: High compression S54 - Questions abound

Have more fun with much less cost. Horsepower and torque breaks stuff like clutches, gearboxes, differentials, etc. Too much compression and lower octane gas tortures your pistons. I would rebuild your engine totally stock and buy some nice headers with a well fitted exhaust system and muffler. Add a less restrictive cold air intake and then get your ECU updated for those. You can even decide on the octane rating you want and have available where you live. 91 is always available and what I would recommend. Then spend your money on brakes and suspension that you can pull of and resell anytime. You will thank me.


Sent from my iPhone using Tapatalk
Jump to top ggrslc 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



All times are GMT. The time now is 09:32:43 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, 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 ©1999-2017 M3Forum.com
Discussing High compression S54 - Questions abound in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)