R3VLimited Forums

Go Back   R3VLimited Forums > E30 Technical Forums > Engine & Drivetrain > M30 & Other Swaps

Reply
 
Thread Tools
Old 11-06-2014, 08:53 AM   #1
Mr. Burns
No R3VLimiter
 
Mr. Burns's Avatar
 
Join Date: Aug 2011
Location: CAN\USA Ottawa\NY
Posts: 3,483
e32/e34 front driveshaft

I'm at a standstill in parts collecting as I've been searching for a 87 ETA front DS for a long time now.

my local PnP has a couple of e32 and e34's with M30b35's in them.

could I fit my rear M20b25 DS with the front part of the e32 or e34 DS (bigger flange) and get it rebalanced? or would it be too long/short?

I'm not about to go and sink 6 bills into a custom DS...
__________________
Quote:
Originally Posted by flyboyx View Post
i have watched my dog lick himself off a few times
Mr. Burns is offline   Reply With Quote
Old 11-06-2014, 02:26 PM   #2
frankie591
E30 Addict
 
Join Date: Feb 2012
Location: Canada
Posts: 545
What trans are you running? I ended up getting a g260 and just swapped the small flange from my e30 transmission onto the m30 trans. Worked great and my stock e30 manual driveshaft fit perfectly. I suppose it may depend slightly on where the engine mounts position you front to back in the car though.
frankie591 is offline   Reply With Quote
Old 11-06-2014, 02:28 PM   #3
frankie591
E30 Addict
 
Join Date: Feb 2012
Location: Canada
Posts: 545
IIRC you'd need an e28 manual front driveshaft to combine with your e30 rear. I haven't heard of using an e32 or e34 front driveshaft to pull off the swap in an e30.

If you pull an e34 driveshaft you could always take it to a driveshaft shop and have them cut the flange off your e30 driveshaft and weld on the big flange from the e34 and that would probably only cost you a few hundred bucks with a balance.
frankie591 is offline   Reply With Quote
Old 11-06-2014, 04:31 PM   #4
Mr. Burns
No R3VLimiter
 
Mr. Burns's Avatar
 
Join Date: Aug 2011
Location: CAN\USA Ottawa\NY
Posts: 3,483
Thanks frankie.
Trouble is I no longer have any m20b25 anything. No tranny, otherwise I would just swap the flange over.

I'm running a 260 tranny from a e32 5spd m30.
I'll keep looking for a 87 ETA or e28 ds front half.
I'm just looking to pop it on and pay a shop to rebalance...maybe new csb
__________________
Quote:
Originally Posted by flyboyx View Post
i have watched my dog lick himself off a few times
Mr. Burns is offline   Reply With Quote
Old 11-07-2014, 07:46 AM   #5
uturn
E30 Addict
 
Join Date: Dec 2010
Location: H-Town
Posts: 585
Maybe a new flange? Or a used one, they can't be that hard to come by.
uturn is offline   Reply With Quote
Old 11-07-2014, 11:27 AM   #6
the imitator
E30 Modder
 
the imitator's Avatar
 
Join Date: May 2013
Location: Vancouver,Wa
Posts: 997
I'm using an e28 back end and an e30 auto front end fitting fairly snug not a lot of travel left inward, but I can lengthen it for the majority of the spline length.
I'm running
M30b35, g265, garagistic mounts custom drilled for position 3.5
__________________
Euro E30 323i N54B30 teaser
the imitator is offline   Reply With Quote
Old 11-07-2014, 12:18 PM   #7
Mr. Burns
No R3VLimiter
 
Mr. Burns's Avatar
 
Join Date: Aug 2011
Location: CAN\USA Ottawa\NY
Posts: 3,483
My engine is going in tomorrow...it'll determine exactly what position I'll be in.

I think my best bet is to grab a halfshaft from a pnp car and get a shop to re and re the flange of my existing ds.

My only option at this point with the parts at my disposal
__________________
Quote:
Originally Posted by flyboyx View Post
i have watched my dog lick himself off a few times
Mr. Burns is offline   Reply With Quote
Old 11-13-2014, 03:01 PM   #8
lukeADE335i
Mod Crazy
 
Join Date: Apr 2013
Location: Adelaide
Posts: 714
Quote:
Originally Posted by the imitator View Post
I'm using an e28 back end and an e30 auto front end fitting fairly snug not a lot of travel left inward, but I can lengthen it for the majority of the spline length.
How do you go for mounting the CSB with that setup? The e28 back part would in theory shift the CSB forward by at least an inch. Does the CSB still bolt up to the mount or did you shift the mount forward?
__________________
My e30: OEM+ with M30B35
lukeADE335i is offline   Reply With Quote
Old 11-13-2014, 05:59 PM   #9
the imitator
E30 Modder
 
the imitator's Avatar
 
Join Date: May 2013
Location: Vancouver,Wa
Posts: 997
I apologize for not being specific, usually I'm better with that.
Pictures would do more justice, and I really should document it atleast so people know its an option.

I used grade 8, M8 T anchors

1. I measured out the holes to the desired length, I then triple checked my measurements and did a small pilot hole on both sides.

2. After that I Drilled the holes using a drill bit that was closest to the same width of that T anchor; The pilot hole was to insure accuracy.

3. Take a pencil file and lengthen those holes only long enough to fit the the T anchors in the hole. Make sure you Lengthen the the holes "North to South" or "Canada to Mexican" or "diff to trans direction."

4. Insert anchor and turn the Anchor "east to west" Doing vertical slits means no side to side play.

5. The CSB will secure the T anchors once tightened.

I was able to keep the mounting position on the angle surface as well.

Quote:
Originally Posted by lukeADE335i View Post
How do you go for mounting the CSB with that setup? The e28 back part would in theory shift the CSB forward by at least an inch. Does the CSB still bolt up to the mount or did you shift the mount forward?
__________________
Euro E30 323i N54B30 teaser
the imitator is offline   Reply With Quote
Old 11-14-2014, 05:55 PM   #10
lukeADE335i
Mod Crazy
 
Join Date: Apr 2013
Location: Adelaide
Posts: 714
Cool - I did something similar with my setup - I'm using a normal M20 (323i - 325i) driveshaft with my G240 box. To make the shaft fit, I lengthened it on the splines, but had to redrill new holes in the angled surface for the CSB so I could put some pre-load on it. A manual 320i driveshaft would have been the perfect fit, but they're hard to get without buying a new one.
__________________
My e30: OEM+ with M30B35
lukeADE335i is offline   Reply With Quote
Old 11-15-2014, 12:19 AM   #11
the imitator
E30 Modder
 
the imitator's Avatar
 
Join Date: May 2013
Location: Vancouver,Wa
Posts: 997
Right arm! I imagine when I do the n54 swap I have have to drill again.. The stock ds and Guibo are huge on 335i's.
__________________
Euro E30 323i N54B30 teaser
the imitator is offline   Reply With Quote
Reply

Thread Tools

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 08:02 AM.


Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright 2004 - 2020 R3VLimited LLC