Jump to content
  • entries
    9
  • comments
    56
  • views
    7,353

M42 swap finalized


Everything is in and running. Picking up from my last entry, I had to chop up a DSSR I had sitting around to add an extra inch to the length. I purchased a small length of stainless rod in the same diameter from McMaster along with some electrodes to match from another supplier. It was impossible to find them locally, and difficult to find anyone online that would sell me less than 10 pounds of them, but I prevailed.

 

50674388191_f668516631_b.jpg

 

50673644418_95c2b03e31_b.jpg

 

I shaved a small amount off one side of the DSSR to clear the guibo when it's twisted to select the further gears, but after sneaking my phone up there for a photo of the clearance, it seems this was totally unnecessary. 

 

50674470422_634622999f_b.jpg

 

I used a 1/2" drive 24mm socket and a C-clamp to bench bleed the clutch slave, installed it, and bled some more.

 

50674472992_29ed9e46d0_b.jpg

 

Everything works well and lands exactly where it should. The clutch is having just a little bit of trouble engaging fully, so I have an adjustable length push rod for the slave on the way from Rogue.

 

50673642223_c9905c22b2_b.jpg

 

I relocated my small AGM battery under the rear seat delete, using a Braille mount through the floor to keep it in place. Then I used a harvested grommet to pass the shortened e30 main cable up to the junction block in the engine bay.

 

50673647383_e469d3ef38_b.jpg

 

These solder plugs are amazing for new battery cable lugs, highly recommended. Just heat up the lug, and insert the cable, hold there until cool and solid.

 

50674477212_343e29f659_b.jpg

 

Finished off lugs look like this and I used color coded adhesive lined heat shrink to protect everything.

 

50674476522_4fbfd10efe_b.jpg

 

Since the swap mounts do not have any accommodation for an engine ground as the stock arms do, that also had to be solved. I found this master grounding lug at an auto wiring supply, and used it in the frame rail in the engine bay to serve as an engine ground. I used an e36 X-Brace nutsert to securely and cleanly anchor it. Here it is in an exploded view:

 

50674390066_d531d205f7_b.jpg

 

And installed:

 

50674475752_c74652290f_b.jpg

 

For cooling, I decided against using the modified M42 radiator and all it's plastic awfulness. It just didn't seem right, and I didn't really trust it to not fail on me. I went instead with an IE aluminum radiator with a bit more capacity. These have a bit of trouble fitting with a fan, so I also had to make a front side aluminum shroud with an electric pusher fan. The coolant hoses are sections cut out of Rogue Engineering silicone hoses for an e36 or e30. Not sure which, as I had both lying around. There's also a Pegasus racing 38 to 32mm reducer to adapt the larger M42 thermostat housing size to the smaller 2002 radiator size. A generic 32mm aluminum joiner that's tapped for a coolant temp switch joins the upper hoses and provides the electric fan in front with power.

 

50673631328_4a65e4ac2a_b.jpg

 

50673632833_16b2e25432_b.jpg

 

50673633138_58151c3482_b.jpg

 

As the M42 runs an expansion tank in stock configuration, I wanted to maintain that. I used a late model e30 expansion tank and placed it above the brake booster. It's important to note that you need the 1.4bar cap for this, the radiator cap will NOT work in it's place. I've never in my life needed to wash my window on the go, so I have no qualms losing that. The tank is just nestled in there for now, but I did make a custom bracket to affix it to the booster ladder properly. To make it fit, I trimmed off the friction fit leg with a Dremel.

 

50673638703_90948c6e5c_b.jpg

 

Then I pressed some spare collar nuts into the slots that look like they were made for this exact purpose.

 

50674467482_2cb27c9b0a_b.jpg

 

50674380746_d287e85b89_b.jpg

 

Loctite some short studs into place, and it's pretty much ready. (These were trimmed down further than shown)

 

50674464697_16f6e79b63_b.jpg

 

50673639703_0e0d566a8e_b.jpg

 

And of course a throttle cable bracket, made from a bookshelf bracket. Used longer bolts on the pedal box, and double nutted into place.

 

50673641093_1361e7dd2b_b.jpg

 

50682698853_ee0a30ed3a_b.jpg

 

The intake is carved down to match the front "firewall" profile, and held in place with two zip ties in pre-existing holes. The bracket from JakeB really doesn't seem to work for me, so I may end up modifying/welding it together differently to work later.

 

50674471682_57949f6c58_b.jpg

 

Went up and down the street and then gave her a much deserved wash. At this point I just need an alignment and the exhaust redone, and see what works and what doesn't.

 

50691330387_1d06baefec_b.jpg

Edited by Spyke

7 Comments


Recommended Comments

reyes02

Posted

So sick! Mind sending me the link to the throttle cable you used?

m42002

Posted

Looking good Spike!

You have a great eye for the details. That whats make these swaps take so much longer than estimated, right?!?

F1

Posted

Many Congrat/s...
I did get my M-42 squeezed into my TOURING. . .
Still can NOT figure out about the TACH modifications nor attachments.
Have you got your tachometer hooked-up and running?
If so, please educate us about how to go about it . .
Simply hate electrical work !@@!

Regards,

The "X" F1 employee !@@!

 

tashakes

Posted

Check out my post here about the $15 solution. It is a one wire install and has worked for years. 

  • Like 1
Spyke

Posted

On 12/8/2020 at 3:10 PM, reyes02 said:

So sick! Mind sending me the link to the throttle cable you used?

 

It's the same Lokar piece that JakeB recommends in his write up, really nothing special. In fact the same thing could be made up at a bicycle shop.

 

Sorry for the late replies, I had no idea anyone actually read this!

Spyke

Posted

On 12/10/2020 at 5:07 PM, m42002 said:

Looking good Spike!

You have a great eye for the details. That whats make these swaps take so much longer than estimated, right?!?

 

Thank you very much, I'm not the kind to just hack stuff and be happy with it. I can't wait to actually have some time to finish some things, I've stupidly taken on a second job that I don't need but I'm constantly afraid of being broke. It's taken all my wrench time away and I dislike that VERY much.

Spyke

Posted

On 12/20/2020 at 6:44 PM, F1 said:

Many Congrat/s...
I did get my M-42 squeezed into my TOURING. . .
Still can NOT figure out about the TACH modifications nor attachments.
Have you got your tachometer hooked-up and running?
If so, please educate us about how to go about it . .
Simply hate electrical work !@@!

Regards,

The "X" F1 employee !@@!

 

 

Definitely do the AutoSportsLab tach adapter. I treid without as someone said the 75+ didn't need one.... But it DOES.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Upcoming Events

×
×
  • Create New...