I also had two small leaks
 from around the screw heads that didn't show up until after I ran the
 engine.  I counter-sunk the holes and used small o-rings and button-head
 screws on the two that were leaking.  No leaks since.

 Mark S.


 Paul,

 I tried applying the 422 CC material per instructions and still have the
 leak.

 I will pull the side plates and try it from the inside.  I did the other
 housing that way but have yet to test it.  if I can't get a seal I am
 tempted to JB weld the cavity.

 Joe Berki
 Limo EZ

 Doing it from the inside was what I had in mind.

 Before you do that try Mark's technique.
 Use a counter sink on the out side of the bolt
 holes and a small O ring. Max CS diameter .352 inch.
 Practice on scrap and use a stop.

 I'll ask Jeff to machine them all that way.

 You can buy the screws from McMaster with the right size O-ring.

 Paul Lamar

In my case the air is going around the threads and seeping out between the
RTV that is placed over the JB weld and the sealplate.  It has to be stopped
in the threads of the screw.

From the photo I have the slide throttle mount plate fastened using the same
screws through (4) 4130 spacers.  I would have to machine recess in the
sealplate and capture the O ring between the spacer and the seal plate,
doable?  Using 10-32 sockethead SS capscrews.



Joe Berki
Limo EZ

OK Joe I see what is going on. I forgot you are using
a slide throttle from Doc. We did not consider that possibility.
I had no idea he sold any at all. Not an easy thing to adapt.
Did you put an O-ring in Doc's flange to seal the intake
air?

"I would have to machine a recess in the
seal plate and capture the O ring between the spacer and the seal plate."

Yes it appears that is the case.

Try sealing the threads from inside first using the conformal coating.

I am not sure what you mean by:
"Using 10-32 sockethead SS capscrews"

The hold down screws for the seal plate are supposed to be 1/4-20.
Are you using 10-32 instead?

Paul Lamar