The BSA A7-A10 Forum
Technical (Descriptive Topic Titles - Stay on Topic) => Frame => Topic started by: Drew Back on 01.11. 2015 23:13
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I noticed my left side head pipe is leaking at the head is there any type of sealant I could put in there to snug it up??
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There's probably some kind of goop out there, however;
I'm not sure if the Iron heads have a slightly tapered port (like I think the Alloy heads do?), but might be worth checking the end of the pipe where it goes into the head and check its condition ie;
Ones I've had were a bit of a sloppy fit (actually partly 'rounded' at the port ends), so I stretched it slightly to make it parallel and a touch bigger than the inside of the port, so when it's pushed in becomes a nice snug fit, but add a very slight taper (or file the hard corner off) at the very end, so it doesn't gouge the port material-
Hope that makes sense...?
To do it I used a bit of 1,3/8" x 1/16 wall tube should be a snug fit inside the 1,1/2".
Cut some slots up the length of it a half inch or so and stuff it in....but you need to be able to get it out, so I had a washer the right size to put in first with a bolt through it....and maybe more...if I remember more, I'll let you know if need be...I' sure you just want a quick fix, but good luck *smile*
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This is what I use.
http://www.crcindustries.com.au/products/specialty-chemicals/maniseal-exhaust-cement
Cheers
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Be careful what you use as I know something was used on the A7 exhausts, but I don't know what (some form of exhaust cement). Anyway I still can not get the dam things out. Its not been urgent yet and there have been other methods to do what I wanted, but there will come a time when I have to risk significant damage.
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Hi All,
Would you believe that ordinary silicone sealant works well for this *????* *????* *????*
If you want a really high temp sealant I can recommend high temp "Dirko"
My Ariel HT5 would always leak at the pushed in head to pipe joint no matter what type of exhaust goo I used
until I tried the Dirko ;)
HTH
John