fly side seal question do you use sealant?
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Old douglas ..smallie with polini 115..super with nasco 177
Joined: 07 Nov 2013
Posts: 598
Location: New Zealand
Sun Jun 28, 2020 2:12 pm quote
Im working on a VBC What product do you use(if anything) around the metal of the fly side seal and the metal of the cases..Its leaking air around the metal union.
fckn scooters
Molto Verboso
62 VBB1T Round Tail W/ leaner sidecar
Joined: 26 Jan 2019
Posts: 1395
Location: california
Sun Jun 28, 2020 11:11 pm quote
I use loc tite on the metal to metal seal - though I suppose Honda-bond/moto-seal/yama-bond, etc. would all also work.

If it is leaking and you have already assembled the motor - I have a bodge fix for it that worked really well for me - here:

Gotta use a quality sealer like the above noted.
Saved me splitting the cases.
Cost me about $5.00 in materials.
Took about 45 min.
Was solid.



Molto Verboso
One or two fun scoots....nothing too precious
Joined: 17 Jul 2013
Posts: 1443
Location: UK (South East)
Sun Jun 28, 2020 11:25 pm quote
I know this doesn't directly answer your question, but when I rebuilt my VBC engine, I used the DRT adapters to [hopefully] safeguard against future oil seal and air leak issues. I didn't use any Loctite or similar, due to the fit being very tight. If you do end up splitting the cases, they are worth bearing in mind. For an emergency fix, CM is your man!!
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