Rebel Racing

[ClickClickBoom]

........

[ClickClickBoom]

Like it sez, got 4 of these beauties from Clint, nice packaging great service, called him instead of ordering on line since my Mac and Firefox mangled his website, Safari works great instead. Ordered them, got them nearly as quick, and as they were sitting on my bench mocking me for not installing them immediately. Got out the jack and stands and a block of wood and floor jack and had the rears in lickity-split. The mounts from RR are a little thicker than the stockers so the 8 8mm bolts had to be replaced if I was gonna use some NLX8 Nord-Locks instead of the ever so, low tech split locks.
I dumped every hardware can I had looking for the right length (1") Grade 8.8 bolt for the installation. Found 7 the right length and 1 more slightly longer and it slid into place like all good German hardware should.
Decided to christen the new mounts out with a run up the Boulder Creek GP course, did all the stuff that made the stockers(mounts) act goofy. With the Seine Systems gate shifter, the Porsche Short shifter kit, and Stomski coupler the shifting was almost flawless, if I loaded the car up in a corner and tried to up shift it would do it but I had to be very precise. With the RR blues in place, I couldn't get the shifting to do any of the old shennagians. NICE! Road noise increase was negligible since I have the sound pad removed and a Dansk Sport muffler installed, I couldn't hear anything extra except a hint of gear noise.
All in all a 2 banana job, only because of the jack and stand and would have taken about 1 hour if I didn't have to dig for the new hardware. The original copper based anti seize was on the main bolt, after 30 years!
A side note the bottom mount cup washer was corroded quite a bit.
Pics to follow!
The bottom washer showing significant corrosion:


The motor mounts:



Trans mounts:


Hola
eric

[Craig_D]

Nice!!!

[toddu]

Is there a washer with that trans mount?

Todd

[ClickClickBoom]

Originally Posted by toddu

Is there a washer with that trans mount?

Todd

The washer with the stock mount is flat and too large for the RR washer, I tried it and the bolt was 2-3 threads short of protrusion from the bottom of the mount. Without the stock washer I get, about 1+ thread protrusion. The stocker was flat and had no locking action, so I did not use it.

[ClickClickBoom]

Originally Posted by toddu

Is there a washer with that trans mount?

Todd

The washer with the stock mount is flat and too large for the RR washer, I tried it and the bolt was 2-3 threads short of protrusion from the bottom of the mount. Without the stock washer I get, about 1+ thread protrusion. The stocker was flat and had no locking action, so I did not use it.

[toddu]

I was referring to #4 in the picture.....

[ClickClickBoom]

Originally Posted by toddu

I was referring to #4 in the picture.....

Yes, it is included with the RR mount.

[ClickClickBoom]

I will say that all the mounts are the same, so that's easy, I ordered some new hardware from Belmetric new 8.8 metric hardware will look nice and the zinc will be fresh.
I was thinking about the mechanics of this mounting system. The engine and trans hang from the mounts and the bolts provide a solid axle for the insulator to work against. The 12mm center bolt has only tension to prevent withdrawal from the car body. The engine mount bolts have potential protrusion through the crossmember and the possibility to secure with a nut on the lower bolt for additional security. The trans mount threads into the body with no access that I can see for additional security.

[ClickClickBoom]

Well,
I was bombing around today, put some new plugs in, went to O'Reilly to chase down a dizzy rotor. Was poking around in the engine bay and noticed that one of the bolts, the orange torque booger was cracked? WTF? Broke out the torque wrench and 19mm socket, all the bolts took almost a whole turn to get to 58 lb ft. Re-boogered them and will check soon.

[ClickClickBoom]

Bolts are tight as a drum, looks like checking after initial torque and drive is the new order!

[mreid]

Don't get too hung up on a cracked booger. The bolt will flex slightly under engine torque as the mount does its job. The bigger "tell" is when half the booger is on the bolt and the other half is on the washer 90 degrees away.

[ClickClickBoom]

Originally Posted by mreid

Don't get too hung up on a cracked booger. The bolt will flex slightly under engine torque as the mount does its job. The bigger "tell" is when half the booger is on the bolt and the other half is on the washer 90 degrees away.

As a helicopter mechanic, I am wary of any indication. The fact that the bolts took almost a full turn to get back to specified torque means it was indeed loose. I have always been fastener wary. Loose bolt in car, not too big a deal, loose bolt in helicopter/A/C pretty big deal.
The only reason I can think of for the loose bolt might be the compression of debris under the bolt stack being worked out via vibration, or the anti-seize, who knows exactly, but the bolts are still tight and boogers intact after re-torquing. My CVs which had new 12.9 bolts and Nord-Lock NLX washers are still tight as a drum as well.

[jager911]

Eric or anyone else who's done this:
I installed the RR tranny mounts last night and I noticed that the blue nylon insert at the top makes it thicker than OEM mount and there is a 1/2" gap between the mount and body. You can see this in your picture above of the tranny mount. Obviously, this reduces the amount of thread in the 2 large 19mm bolts.
The issue I'm having with this is the center support with the 4 little studs with the flat spacer does not touch the tranny! Did you have this issue and how did you deal with it? 3 of my studs were missing and I couldn't find any at 11pm last night so I was going to replace with M8 Allen bolts, anyone see any issues with this?
I was going to re-install the factory Sport mounts I have since I'm not comfortable with the gap unless I hear this is normal for these mounts and my tranny is not going to fall out at 140mph at Watkins Glen next week.

[jager911]

p.s. is a good idea to use Loctite blue on the tranny bolts and where can I find the torque check 'booger'?

[ClickClickBoom]

Originally Posted by jager911

p.s. is a good idea to use Loctite blue on the tranny bolts and where can I find the torque check 'booger'?

Search Results from Aircraft Spruce

[jager911]

Originally Posted by ClickClickBoom

Search Results from Aircraft Spruce

Thanks for the link, not sure if you missed my questions above, I'm looking for your input on the space and how did you handle the center of the cover with the 4 studs?
Did you have a space there as well where you may have added washers to have positive contact with center of tranny?
I thought I got the wrong part but I see from your picture, you have the same space I have above the mounts where the 19mm bolts meet the body.

[ClickClickBoom]

Originally Posted by jager911

Thanks for the link, not sure if you missed my questions above, I'm looking for your input on the space and how did you handle the center of the cover with the 4 studs?
Did you have a space there as well where you may have added washers to have positive contact with center of tranny?
I thought I got the wrong part but I see from your picture, you have the same space I have above the mounts where the 19mm bolts meet the body.

It's been awhile since I did the install. Everything was and is tight as a drum with no spaces.

[Flieger]

Originally Posted by jager911

Eric or anyone else who's done this:
I installed the RR tranny mounts last night and I noticed that the blue nylon insert at the top makes it thicker than OEM mount and there is a 1/2" gap between the mount and body. You can see this in your picture above of the tranny mount. Obviously, this reduces the amount of thread in the 2 large 19mm bolts.
The issue I'm having with this is the center support with the 4 little studs with the flat spacer does not touch the tranny! Did you have this issue and how did you deal with it? 3 of my studs were missing and I couldn't find any at 11pm last night so I was going to replace with M8 Allen bolts, anyone see any issues with this?
I was going to re-install the factory Sport mounts I have since I'm not comfortable with the gap unless I hear this is normal for these mounts and my tranny is not going to fall out at 140mph at Watkins Glen next week.

Can you post some pictures? It is hard to tell what is happening. The mounts are the same height as the stock pieces. Clint said you can omit the washer on the chassis side of the transmission mount- it is really just for the engine mounting application (they are the same mount). Clint uses the washer on his car because it drops the tranny a few mm for a lower cg. Are you unable to jack the transmission up enough to close the gap between the polyurethane and the chassis?

[jager911]

Originally Posted by Flieger

Can you post some pictures? It is hard to tell what is happening. The mounts are the same height as the stock pieces. Clint said you can omit the washer on the chassis side of the transmission mount- it is really just for the engine mounting application (they are the same mount). Clint uses the washer on his car because it drops the tranny a few mm for a lower cg. Are you unable to jack the transmission up enough to close the gap between the polyurethane and the chassis?

It was midnight last night and I was tired and not thinking straight. I had a 1/2" space in the center support because the jack had some weight on it. I lowered the jack and problem solved, duh! I was fighting another issue, lost 3 of the 4 center studs, made a 10pm run to Home Depot and Lowe's looking for studs. No luck, picked up M8 1.25 Allen bolts instead to try to use. I spent more than an hour trying to get everything lined up but could not start the bolts, gave up, went to Sears, got studs there and got it back together. New problem, after trying to re-install Weltmeister swaybar, one stud is a few mm too long , will take a Dremel to shave it down tomorrow. Valve adjustment is next, hitting the Glen next weekend and taking care of all the maintenance.