'How To' JL pipe mod

[pdxjim]

Why not just replace the studs with allen cap head bolts?

Jim,
All aircooled  RD350's and 400's have the top exhaust studs in the cylinders go into a open backside threaded hole and most don't come out from rust and corrosion. So the chances of the studs coming out and leaving good threads is really slim.
I have to drill them out 90% of the time.
If I do get them out...I'll use the new shorter studs.
C

Thx for that Chuck.  Been awhile since I messed with aircooled RD cyls.  Last few bikes I’ve done, TDR, KH400, and LC I’ve had more trouble keeping the studs in than getting them out.

[RDFL]

Great work, I knew spacing was different from having to slot flanges sometimes but did not know was that much.

[RDFL]

The socket nuts were delivered today - two days after I ordered them..

   Are you in Hawaii if so that's impressive.

[Hawaii-Mike]

Yes I'm in Honolulu and I was shocked!  Priority should only take 2-3 days however vendors seem to be allergic to mailing things here.

[rd400greenhorn]

Chuck
This setup does not use an o ring?
Only the base gasket?

[SUPERTUNE]

I did use a ring gasket on the base with Ultra gray gasket maker and no o-ring just glue into the spigot with the same Ultra gray gasket maker.
Chuck

[quocle603]

Eric Heyman pointed me in the right direction with these brass 8mm nuts https://www.ebay.com/itm/BRASS-8MM-1-25-PITCH-11MM-HEAD-X8-INTAKE-EXHAUST-VW-BUG-BUGGY-GHIA-EMPI-43-6051/264156966757?epid=655454971&hash=item3d80fb6f65:g:N2YAAOSwTA9X7~Xv

They worked great on my spec II :)