Audi UR Quattro Rally Build


( 13 )

4 minute(s) of a 357 minute read

8-19-2021

What’s this called? The Audi parts diagrams call it a “stop buffer” but what does it stop? Engine pitch perhaps? Well, it’s probably important so we should have one, exactly like the works cars of course. Oh boy! We’ll call it an Engine Pitch Stop or EPS.


It sits in a receptacle on the bumper bar and presumably stops the engine from pitching back and forth. Subarus have one on the bulkhead. We bought a performance one from ECS because who doesn’t want a big red nob sticking out of the front of their engine, even if it is mounted on a piece of PVC conduit!


We did intend to mount ours on the right side of the engine like the factory cars and even designed a mounting plate for it but then we realized it might be a bit complicated to design an alternator bracket in combination with this so decided to put it on the left side instead. It helped that there were two threaded holes in exactly the right place.

The EPS fits in a cup welded to the bumper bar so we needed to mock that up. Fortunately, we discovered that most paint can lids are the right size so a can of Rustoleum Self Etching Primer donated its lid. This intersects with the bumper bar about half way so we had to shape it carefully with a file.



It also changed color during the process because of, well, fail. Undaunted we acquired some steel tubes in the appropriate diameters and proceeded to recreate our plastic EPS in metal. First attempt was a little long.


That’s much better.


Now for the tricky bit.




After about four days of filing, we had a fit. The cup fit on the bumper bar too.




Happy with the way it looked we cut it to length, welded it up, added a brace and stood back and admired it.



Can’t wait till its gold zinc plated.


Comments

Lookin good. Pride in work and attention to detail

Posted by Cyphercrash on 3/5/23 @ 8:59:32 PM

Great update!

Posted by Diggymart on 10/10/21 @ 10:31:32 PM

Great build

Posted by tmprod on 3/4/21 @ 6:44:07 PM

Thanks for updating Paul! Ill have to check out your new shop soon!

Posted by diyauto on 12/24/20 @ 5:08:37 PM

Anytime.

Posted by team illuminata on 12/24/20 @ 6:34:09 PM

This will be a beast when finished, looking forward to it.

Posted by MPower on 10/12/20 @ 2:15:11 PM

Great build!

Posted by DIYauto_Admin on 9/9/20 @ 12:08:22 AM

Hey hi Sue!

Posted by Diggymart on 2/14/20 @ 4:12:57 PM

Looks like it’s coming together!

Posted by Diggymart on 11/21/19 @ 2:49:00 PM

Those stands look nice!

Posted by diyauto on 11/21/19 @ 2:47:08 PM

Incredible build! Love the photo's

Posted by MoonpieMagic on 11/8/19 @ 8:00:45 AM

Thank goodness for friends carrying precious cargo!

Posted by Diggymart on 10/10/19 @ 11:40:08 PM

Woo! Excited to check this thing out soon :)

Posted by diyauto on 9/13/19 @ 1:37:14 PM

Great teamwork!

Posted by Diggymart on 7/29/19 @ 3:11:58 PM

Great build!

Posted by Diggymart on 1/17/19 @ 7:24:29 PM

Thanks

Posted by team illuminata on 3/4/21 @ 10:30:06 PM