Plugging the Choke Coolant Nipple

[opus10583]

Hi,

Having secured a workspace for an upcoming weekend I'm preparing to swap my 78's ADHA for a DFEV.

I have all at hand and in place save one thing: Plugging the cylinder head choke coolant tube nipple (I have one of Mark's SS heater pipes without the choke tap).

Joe was helpful to suggest a workable solution, plug a section of hose with silicone, but my previous experiences with the stuff around the house leave me with little confidence in the material as a long term solution.

How have others solved this problem?

Thanks,
Mark

[124JOE]

black RTV silicone gasket maker
wont peel off like cheap silicone


i fill one end of a hose then trim when dry
put it on the nipple and secure with clamp

[digitech]

If it were me, I'd use a short piece of hose with a bolt/hose clamp on the end of it. Tightening a clamp around a bolt gives me a little more confidence than relying on a plug of RTV which I'm sure has worked fine for Joe.

[tartan18]

I used a small rubber cap and then secured it with a small hose clamp.

[opus10583]

I used a small rubber cap and then secured it with a small hose clamp.

Hi,

Where'd you source that: Auto parts, plumbing supply?

Thanks,
Mark

[124JOE]

hobby shop stores have rubber caps

[opus10583]

hobby shop stores have rubber caps

Hi Joe,

Thanks, and thanks again for the silicone tip, I really don't have much luck with the stuff though.

"A man's got to know his limitations".

Where in a hobby shop am I looking for high-heat high pressure rubber caps?

Thanks,
Mark

[opus10583]

If it were me, I'd use a short piece of hose with a bolt/hose clamp on the end of it. Tightening a clamp around a bolt gives me a little more confidence than relying on a plug of RTV which I'm sure has worked fine for Joe.

I think we have a winner.

Thanks,
Mark

[manoa matt]

If the intake manifold is removed from the car you can simply unscrew the fitting and find the appropriate threaded plug. I haven't found a rubber cap that I'd be comfortable with, they are usually only for vacumn or emissions. The bolt in the hose is by default the best solution.

[tartan18]

I got my plug from the local Autozone store. But I like Matt's solution better -- unscrew the fitting and replace with a screw in plug. That is what I am going to do.

[opus10583]

I got my plug from the local Autozone store. But I like Matt's solution better -- unscrew the fitting and replace with a screw in plug. That is what I am going to do.

Thanks!

[opus10583]

If the intake manifold is removed from the car you can simply unscrew the fitting and find the appropriate threaded plug. I haven't found a rubber cap that I'd be comfortable with, they are usually only for vacumn or emissions. The bolt in the hose is by default the best solution.

Hi Matt,

I haven't been under the hood in a while, why 'intake out of the car'? Isn't the tap on the head?

Thanks.
Mark

[manoa matt]

That fitting is screwed into the intake manifold. The reason to have the manifold removed is that the fitting is in a hard to reach area and you might not have proper acces to remove it. Otherwise just use the hose and bolt solution.

[opus10583]

That fitting is screwed into the intake manifold. The reason to have the manifold removed is that the fitting is in a hard to reach area and you might not have proper acces to remove it. Otherwise just use the hose and bolt solution.

Thanks Matt.