The BSA A7-A10 Forum
Technical (Descriptive Topic Titles - Stay on Topic) => A7 & A10 Engine => Topic started by: t20racerman on 02.06. 2011 21:52
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Hi all
Sorry to be asking so many questions here, but after neglecting my BSA for a decade, I seem to have forgotten loads about it! (All my recent experience is of racing two stroke twins)
Anyway, what is the consensus on here regarding gaskets and gasket glue? I know we all have our favourite sealants, but when using gaskets I think I used to use red hematite on one side of the BSA gaskets, and grease on the other. The gasket set I have now seems far better quality than the old paper gaskets - so what to do - glue or not?
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I tend to use sealer on one side and grease the other as well with good results, except that is when it comes to the rocker box so i now use silicone on that gasket and use fingers and wire through the rocker covers to get the push rods in place to avoid ruining the sealer which the proper comb seems to do every time.
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Same as Rich really,
Engine side with high temp wheel bearing grease and cover side with blue Hylomar.
Seems to work well for me
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Thanks guys - seems my memory of the best way forwards was right. *smile* Glueing up one side does make sense.
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Whatever works on your racers should work on the BSA anyway. I also tend to use grease one side but never liked that red Hermetite stuff as it's a pain to clean off when baked hard.
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does anyone remember golden hermetite ,i used to use that on the rocker box 2 sets of gaskets one to the bottom of the r/box then the other set to the head leave to set for 10 min's then a/ if mate around with long fingers He'd fit pushrods in no comb, if not use the comb as gaskets stuck they don't breakup or move only was usually the only bit that was oiltight!! Only problem now is can't find anyone who stocks it or as even heard of it, regards Bob hebdon.
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Since getting my Rocket 3 I have also been frequenting the Triples Online forum and one of the members highly recommends Loctite 2020, not a gasket 'glue' so this seems a bit odd. He sprays both sides of the gasket and bolts up, reckons he never gets any oil leaks anywhere.
I wonder if he's tried breaking a joint after use, *conf*.
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Good point that, but that rocket box is a b****r to keep oil tight.
Just realised that you are not too far from me. I go to Louis' cafe at Kit Hill near Callington on Sunday mornings with a bunch of classic mates. One guy who I've seen there has recently bought a BSA Rocket 3, maybe it was you? He had an RGS rep but think he sold it. I sometimes turn up with one of my other bikes, Ducati or BMW.
Alan
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One guy who I've seen there has recently bought a BSA Rocket 3, maybe it was you? He had an RGS rep but think he sold it. I sometimes turn up with one of my other bikes, Ducati or BMW.
Alan
Well it wasn't me as my R3 is in bits at the moment, but I think I know him if his name is Dave and he's from Callington.
Might come over one Sunday, will likely be on my Harley as its the only one that can be ridden just now. What sort of time do you get there?
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[Well it wasn't me as my R3 is in bits at the moment, but I think I know him if his name is Dave and he's from Callington.
Might come over one Sunday, will likely be on my Harley as its the only one that can be ridden just now. What sort of time do you get there?
That name rings a bell.
We normally drift in from 10 am onwards. The 1st Sunday morning of each month sees most classic bikes there since that is the day the Cornwall VMCC boys visit.
This is assuming the weather is not raining and the bikes are working course!
I was on my way this last Sunday but the BSA decided to stop just at the entrance to the Saltash tunnel. Fuel blockage. Some of the boys stopped the traffic to let me turn around and retreat back home.
Alan
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does anyone remember golden hermetite ..... Only problem now is can't find anyone who stocks it or as even heard of it, regards Bob hebdon.
Still available Bob: here (http://uk.rs-online.com/mobile/search/searchBrowseAction.html?method=getProduct&R=0691858) for example
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There is a gold coloured Loctite sealer, at the moment I'm using a Black coloured Loctite sealer, smells strong but it has sealed my problematic Rocker Box ( with the help of two thickness's of gasket), also just used it on the alloy sump plate that refused to seal, time will tell if that is sorted, I could see no reason why it leaked althoug gasket,mesh,gasket, alloy plate is a lot of surface.
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Thanks Ian, I've used the link and bingo thought you'd answered my prayers but no it's discontinued ,many thanks for your help, regards Bob
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Sorry about that. Google does throw up some other possibilities so you may be lucky and find some old stock somewhere.
I must say I always use Wellseal on one side of gaskets and grease on the other. Works for me.
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I use Wellseal, whether I use it on one or both sides depends on the likelyhood of leaks! Haven't had to try & remove it where I've done both sides yet though!! It's much better than the red Hemetite which gets all over the place when you're trying to apply it and is a right b*gg*r to get off again once it's hardened...
My A10 used to leak like the Torrey Canyon when I first got it, it's a lot less incontinent now thanks to Wellseal...
Cheers,
Adrian
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Just to add to the list of successful experience with sealers, I had bought a tube of Loctite Blue Maxx silicon to use on the Norton. Then I have an old Mercedes that i was going to use in a club sprint and it developed an oil leak from between the cam carrier and head - apparently a common problem that can be fixed for half a Zillion dollars or about double the value of the car! Plus I had the sprint that weekend so the mechanic suggested having a go with some sort of sealant and see how long it lasts. So this is external on a join but not direct oil pressure. I used carby cleaner and got it nice and clean and then wipe some on. So it lasted to the sprint, then another year or so of sprinting, then pressed into service as a commuter and..... now 5 or more years down the track still not one leak from the join! Everywhere else has leaked though!
Then also a few mates have Amilcars with superchargers or lots of mods and have had trouble holding it all together. I have some on order but havent used it but Three Bond 1207b is apparently the only thing after years of trying that everyone universally agrees is the go. I googled it and apparently the only thing that will hold high performance hondas, aprillias etc also and can be bought in tubes with their name on it. Not outrageous cost wise either and picking some up locally this week. Also the 1211 is great for gearboxes etc apparently.
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My Mercedes does the same, M104 six cylinder. Leaks between the head chaincase and the block, I'll give that a try. Regards, Nigel.