Author Topic: Another M42 engine build  (Read 66960 times)

normboudreault

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Re: Another M42 engine build
« Reply #105 on: March 24, 2014, 04:19:37 PM »
I'm about to embark on a very similar rebuild to yours - and you thought you knew nothing??? My ignorance could fill an ocean...  :-\

Really saddened to hear about the cancer you face but face it like every obstacle you've faced in your build and all be will be roses...

Looking forward to a positive update..

All the best with the chemo....

Darky

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Re: Another M42 engine build
« Reply #106 on: March 25, 2014, 07:25:33 AM »
Very sorry to hear about the cancer. Nasty crapy stuff that it is!
Lost my mother to that stuff, that's probably why I look after her e30 so much. The only car in my 3 car garage! It just reminds me of her!

Congratulations to your son being accepted into the Air Force!

mabeer

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Flywheel
« Reply #107 on: April 26, 2014, 07:43:37 AM »
Well even though I had the transmission mounted and everything hanging on the hoist ready to go in I awoke one morning thinking about all of you who lobbied for a lightened flywheel to help wake things up.  So I acquiesced and Rob hooked me up with a UUC Flywheel kit.  Here's the skinny in pounds:

                          Stock            UUC
Fly Wheel           26.6              8.2
Pressure Plate     8.4             13.0
Clutch                  1.4               3.8

Total                   36.4             25.0

Savings of 11.4 pounds.  Not as great as I was hoping for but we'll see how she goes.  In a couple of weeks I should have either a slightly used UUC kit for sale or a mounted but never used stock kit for sale depending on if we like the UUC kit or not.

One thing I discovered through this is that here is some bad data in some of the parts systems.  The stock Sachs clutch kit came with the wrong size pilot bearing.  It had a 15mm ID instead of the twelve the 240 needs.  Fortunately I had ordered another somewhere along the line (Pelican I think but I don't recall for sure). Dog gone it! 15mm ID too.  Ran up to Advanced Auto to get the ship righted, came home, crap should have checked... 15mm!  Agggggh!  Returned the bearing to AA and they assured me it was the right one.  They were unable to look up a bearing by size so off to NAPA and they had the right one.  When I went to install the clutch, wouldn't you know it, the clutch installation tools (one I ordered and one came with the stock kit) were, of course, all the wrong size. 

The moral of the story kids is don't assume just because you ordered the right part that you got the right part.  I wonder how many input shafts out there are flopping around in a sloppy pilot bearing. 

Alright more later.  Gotta grab another cup of coffee and get back in the garage.  Goal is to get that bad boy dropped back in today.  Turn the key tomorrow?  Light at the end of the tunnel :)

**edited to add 240 input shaft changed from 12mm to 15mm 9/90 production.
« Last Edit: April 30, 2014, 05:11:36 PM by mabeer »

mabeer

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Re: Another M42 engine build
« Reply #108 on: April 26, 2014, 03:55:43 PM »
Well the UUC kit doesn't fit.  The ears on the pressure plate contact the bellhousing.  Everything else looked good but there is noway that is going to work.  Too bad, I was looking forward to it.  Twin mass is back on. 

Warsteiner

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Re: Another M42 engine build
« Reply #109 on: April 26, 2014, 05:44:27 PM »
One of the easiest in my opinion and the cheapest is buying a 325 M20 FW...having it cut down to 11 or 12lbs, and putting the M42 ring gear on.....installing the stock 325 clutch set up and away you go! I think it saves 17lbs.

Cheers,
~Ralph

wazzu70

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Re: Another M42 engine build
« Reply #110 on: April 27, 2014, 03:44:41 PM »
Wish I knew you were going the UUC route, I coukd have saved you some trouble.

I got a single mass flywheel and clutch kit for the E36 only to find it did not fit in the 240 bellhousing! Swapped to a ZF from an E36, custom driveshaft, custom shifter arm, ect. Was a real pain!

To top it off I had a lifhtened M20 flywheel that worked just fine. WishI would have just hadit modifiedto fit the M50/M42 ring gear. Much easier!!!! Then I later found out the newer M20 starters fit the M42 without modification so all I had to do was get a new starter.

Live and learn I suppose!
-Nick
91 E30 M42 with VEMS

mabeer

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Re: Another M42 engine build
« Reply #111 on: May 04, 2014, 12:00:20 PM »
Can anyone confirm whether or not an e30 m42 has a starter support bracket?  It is pictured on real oem but not listed which leads me to believe it wan't installed on our car, but I vaguely remember taking one off 15 months ago.  I wasted 3 hours looking for it this morning to no avail.  Thanks for your help.  Getting close.

Mike

wazzu70

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Re: Another M42 engine build
« Reply #112 on: May 04, 2014, 04:28:44 PM »
Mine didn't have one
-Nick
91 E30 M42 with VEMS

mabeer

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Re: Another M42 engine build
« Reply #113 on: May 04, 2014, 05:44:55 PM »
Thanks Nick.

mabeer

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Re: Another M42 engine build
« Reply #114 on: May 06, 2014, 03:40:09 PM »
It's alive! :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) :D :D :D :D :D :D :D :D :D :D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D :) :) :) :) :) :) :) :) :)

Thanks everyone!!!!!

wazzu70

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Re: Another M42 engine build
« Reply #115 on: May 06, 2014, 07:39:55 PM »
Congrats!! Must feel great!
-Nick
91 E30 M42 with VEMS

Darky

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Re: Another M42 engine build
« Reply #116 on: May 07, 2014, 01:24:25 AM »
That's great news, how does she feel with the new engine?
What engine management did you use?

mabeer

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Re: Another M42 engine build
« Reply #117 on: May 07, 2014, 04:35:25 AM »
Right now she's still on jack stands.  Need to put on the driveshaft and exhaust and throw the interior bits back together.  I;ll post some video and driving details later.

mabeer

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Re: Another M42 engine build
« Reply #118 on: May 09, 2014, 08:01:24 AM »
After nearly 14 months she's back where she is meant to be, in the high school parking lot.  Got her off the jack stands last night and took her for a maiden voyage.  I've got to give the brakes another bleed, but other than that I'd say this project was a 100% success.

Hits: We haven't gotten on it yet but even at partial throttle it pulls harder than full throttle did before, much harder. 8)  She was tired at 230,000 miles.  I don't know what kind of power it was making before the rebuild.  Based on a top gear episode where they dyno'd some aging, neglected super cars I'd guess well under 100hp for sure. 

Put on ST lowering springs off ebay and Bilsteins.  What a difference!   Not slammed but just right IMO.  The lowness is a little shocking but I'm comparing it to what I became use to which was sitting a foot in the air on jack stands.

The UUC SSK with DSSR is really nice.  I didn't think I would like it as much as I do, but it is fantastic.  Rob and his team were a pleasure to deal with.  For future surfers, the UUC clutch kit is a no go on an E30 M42, unless as Nick said, you're willing to do some major driveline customization.

The Luke Box, popular over @ R3V, is killer.  We installed before but I forgot how great the sound system sounds.  Not boomy craptastic but just really nice.

We drove till dark last night and I forgot how good the Cibie CSR's are.  By far better then any other vehicle I've been in, including anything with HID's.  I don't think they are available anymore but if you ever come across them grab them. They are gold.

No oil or coolant leaks :)

The 4.27 diff seems nice.  We haven't had it on the freeway yet so the jury is still out, but this coupled with the increase in torque makes the car a lot of fun.

Power steering delete.  Kind of a pain till you get rolling but nice other wise and a major leak source eliminated.

Miss: In a moment of boredom many months ago we plastidipped the Ronal LS's in white. :-\  As they sat waiting to go on we came to the decision that it would look like Johnny D'bag's car like that.  Nevertheless, I threw them on just to get it on the road and well, I guess I may be a D'bag cause I think they look pretty good.  White plastidip on wheels blows because they show dirt like crazy and are impossible to clean so Bryce will probably be peeling dip this weekend.

Still to do: Need a tune but seems to run well on the chip Korman burned for the cams.  I know "seems" is not a good standard to use.  Just need to decide what route I want to go.

Need to install the skid plate as I could see that getting some use.

Transmission is weeping at the case joint (whatever it's called).  If I get that sorted could it be I have a leak free M42?  That would be something.

Blackstone Labs is local so I plan on getting engine oil analysis done.  I've never done that before so should be interesting.

Body work or probably a better way to go a clean shell swap.

Many thanks to all of you for your help and advice.  Warsteiner, Wazzu70 and Kelflaman especially.  I owe you guys dinner at the very least and although we'll probably never meet, I feel it's important to point out that I feel like I gained some friends though this process, a sincere thank you.  Ray Korman @ Autoworks for the great bench racing talks, wise advice and awesome head work. C&P Machine here in Fort Wayne for the block work, assembly help, and the patience they showed dealing with my endless idiotic questions.  Metric Mechanic for the crank keyway. Scott @ Jim's Auto in Grabill for the encouragement and loan out of numerous tools to get the job done. Steve at Top End Performance for the rods and pistons.  (Okay, cue music and get him off the stage)  :)
« Last Edit: May 09, 2014, 08:16:16 AM by mabeer »

keflaman

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Re: Another M42 engine build
« Reply #119 on: May 09, 2014, 11:33:10 AM »
This has definitely NOT been just "Another M42 engine build". ;)

And a hearty "Thank You" for documenting and sharing the build with us. I have a feeling this is going to be the blueprint for many future engine builders! :)