R3VLimited Forums

Go Back   R3VLimited Forums > General Forums > General Discussion

View Poll Results: Which engine would you choose?
M54b30 38 67.86%
M42/M44 2.1 stroker 10 17.86%
S14 8 14.29%
Voters: 56. You may not vote on this poll

Reply
 
Thread Tools Search this Thread
Old 07-15-2019, 08:03 PM   #106
djjerme
R3V Elite
 
djjerme's Avatar
 
Join Date: Sep 2010
Location: Portland, OR
Posts: 4,937
Quote:
Originally Posted by Andrew325is View Post
Metric Mechanic 2100 Rally
I don't trust anything MM posts for hp. I have yet to see a MM engine actually put down on a dyno what they claim. Know of two local guys that are still bitter about their MM motors actual numbers.

So long story short - M54.
__________________
1984 Alpina B6 2.8/1 #35
1991 325i MT2 Touring (JDM bro)
1991 Racecar (Chase Schmidt's former drift car - M30)
2006 BMW X3
2011 Audi A3 - wife's other German car
djjerme is offline   Reply With Quote
Old 07-15-2019, 08:06 PM   #107
digger
R3V Elite
 
Join Date: Nov 2005
Location: Sydney, Oz
Posts: 4,318
Quote:
Originally Posted by djjerme View Post
I don't trust anything MM posts for hp. I have yet to see a MM engine actually put down on a dyno what they claim. Know of two local guys that are still bitter about their MM motors actual numbers.
truth spoken
__________________
89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

digger is offline   Reply With Quote
Old 07-15-2019, 10:28 PM   #108
nando
Moderator
 
nando's Avatar
 
Join Date: Nov 2003
Location: bellingham, wa
Posts: 33,792
Yeah, I don't have an MM engine, but I built mine with their parts - it's been reliable, but the HP claims are BS.
__________________
Build thread

Bimmerlabs
nando is offline   Reply With Quote
Old Yesterday, 05:23 AM   #109
varg
R3VLimited
 
varg's Avatar
 
Join Date: May 2014
Location: Palm Beach County, FL
Posts: 2,046
Quote:
Originally Posted by djjerme View Post
I don't trust anything MM posts for hp. I have yet to see a MM engine actually put down on a dyno what they claim.
I don't know anyone who has a Metric Mechanic engine but it usually seems that engine builders can't stop crowing about dyno results and proudly display their SAE gross engine dyno plots and MM refuses to publish anything but numbers.
__________________
@turbovarg
'91 318is, M20B25, T3/T04E 60 trim (15psi), megasquirt, coilovers, Z3 rack, cold AC
[b u i l d]
[Car of the month: April 2018]

Always outnumbered, never outgunned.
varg is offline   Reply With Quote
Old Yesterday, 02:54 PM   #110
djjerme
R3V Elite
 
djjerme's Avatar
 
Join Date: Sep 2010
Location: Portland, OR
Posts: 4,937
Which of these 3 engines would you choose for a swap? M54, M42/M44 stroker, or S14

Yup. It’s a little old school mentality when everyone “knew” that camel hump fuelie heads were worth 30+ horsepower. Back when people would walk around claiming 300hp but put it on a dyno and you’re lucky if you threw down 150.

Somewhere I have the dyno results of the MM 2.5 Rally S14 here in PDX.


Sent from my iPhone using Tapatalk
__________________
1984 Alpina B6 2.8/1 #35
1991 325i MT2 Touring (JDM bro)
1991 Racecar (Chase Schmidt's former drift car - M30)
2006 BMW X3
2011 Audi A3 - wife's other German car
djjerme is offline   Reply With Quote
Old Yesterday, 02:59 PM   #111
MrBurgundy
No R3VLimiter
 
MrBurgundy's Avatar
 
Join Date: Mar 2012
Location: 33.8170° N 118.0373° W
Posts: 3,770
Quote:
Originally Posted by Julien View Post
expand on this, i'm curious to hear it
__________________
Quote:
Originally Posted by wholepailofwater View Post
Q


WTB: Dove Grey e36 Front Door Panels (2 door)
MrBurgundy is offline   Reply With Quote
Old Yesterday, 05:33 PM   #112
Caperix
Member
 
Join Date: Feb 2018
Location: Savannah ga
Posts: 47
This months issue of grassroots motorsports they do a track comparison of a 318is they rebuilt using a metric mechanic stroker engine & a stock e30 m3. The m3 was a few seconds a lap faster around vir and all the testers preferred the m3 even on the street.
Caperix is offline   Reply With Quote
Old Yesterday, 07:01 PM   #113
nando
Moderator
 
nando's Avatar
 
Join Date: Nov 2003
Location: bellingham, wa
Posts: 33,792
That's because a $10k MM built M42 realistically puts down less WHP than a stock M20B25.
__________________
Build thread

Bimmerlabs
nando is offline   Reply With Quote
Old Yesterday, 07:49 PM   #114
varg
R3VLimited
 
varg's Avatar
 
Join Date: May 2014
Location: Palm Beach County, FL
Posts: 2,046
Interesting, I was looking forward to seeing the results after reading how they wanted to beat the M3. The odds looked to be in the M3's favor because the 318is build was just so damn mild. They seem to have highly overestimated that 2L stroker engine, which is rated at "170hp" on the MM site, and not gone far enough with the suspension, the Eibach springs are pillow soft if this is correct. Assuming the same tires between the cars, 170hp and mild suspension just isn't enough to beat an M3. Still down on power, it would need a huge grip and braking advantage to win. Or they could've just avoided the milquetoast M42.
__________________
@turbovarg
'91 318is, M20B25, T3/T04E 60 trim (15psi), megasquirt, coilovers, Z3 rack, cold AC
[b u i l d]
[Car of the month: April 2018]

Always outnumbered, never outgunned.

Last edited by varg; Yesterday at 07:55 PM.
varg is offline   Reply With Quote
Old Yesterday, 08:46 PM   #115
digger
R3V Elite
 
Join Date: Nov 2005
Location: Sydney, Oz
Posts: 4,318
MM make some great parts and the quality seems to be very good in that they generally use quality materials, processes with good machining etc, but their engine combinations simply just dont work anywhere near as well as they could. far too much emphasis on smooth idle and emissions and they are a dog as a result poor specific hp and specific torque on the dyno. the recipe for top performing engine hasn't changed in the last 70+ years, its actually not difficult at all.

A NA M42 just needs some cubes, compression, proper head/induction work, tuned headers, proper cams and tuning. choose the parts that work together to be more than just the sum of the individual parts (its always about the combination of parts not how much $$$ are spent)

The MM headwork and cam specs leave alot to be desired and its the same on all their m20, m30 etc and since almost all the power is in the induction side and cam if that's wrong the whole engine under performs
__________________
89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

new build thread http://www.r3vlimited.com/board/showthread.php?t=317505


Last edited by digger; Yesterday at 09:02 PM.
digger is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 -7. The time now is 11:48 AM.


Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright 2004 - 2020 R3VLimited LLC