Boxerworks.com

I have a loose intake spigot on one of my R75/5 heads(RH). I have tired tightening it with the head hot, but it still comes loose and the carb sits at an angle.

I was thinking of trying red Loctite but I doubt if it would hold up to the heat. Perhaps peening the threads? Any other ideas?

IIRC, Snowbum discusses this on his site ( ) and recommends red Loctite.

Kurt in S.A.

Garnet wrote: Perhaps peening the threads? Any other ideas?

I'll be right over.
Got any beer?

Check the specifications (re heat) of the various
Loctite products available(including two packs). According to literature
the heads only reach 100d C.
Intakes would be cooler due to vapourisation of
the incoming fuel. Would heat up further after
shutdown.

ME 109 wrote:

Garnet wrote: Perhaps peening the threads? Any other ideas?

I'll be right over.
Got any beer?

I've just peen to the beer store!

Yep, glue it in place.

Wow...got the answers fast...yep I used red loctite on the 75/6 on left carb spigot...been workimng for the last 2 years according to new owners.

PS: Enjoyed Van Island trip (Tofino was awesome as were the roads),,,sorry couldn't swing a ride for a meet up plus we were running out of time...really great area of the country for sure!

I've had the same problem with my aluminum Dellorto spigots. The red loctite did the trick. I was, at first hesitant to do it, in case I wanted to use these pricey little tubes on another set of heads down the line. This is a big concern, especially if you've ever had to remove a set of 40 year old stock Bing manifolds. I had to carefully cut mine off from the inside out.
I tried high temp silicone at first, but that failed on a long hot ride. A little bit of red loctite did it. When I serviced the heads a couple years ago I was able to remove the new manifolds with just a little heat.