Glue for JS gasket rings in England?

Status
Not open for further replies.
Joined
Dec 2, 2012
Messages
896
Country flag
Jim's 0.003" gasket rings arrived today and in the instructions he recommended using Pliobond 25 adhesive to hold them and the wire in place during assembly.

As i am in England an this seems to be an American product not available here or on eBay etc. does anyone know what else may be suitable?

I have tried some locally available contact adhesive but they just make a lumpy mess and I'm worried about them not compressing properly which could lead to failure and leaks.

What has anyone in England used an how well did it hold during assembly? I can't get the ring's to stay in position and flat long enough to fit the head with them or the wires moving.
 
I have never used them Toppy but might in the future if I go 920 and use a copper head gasket.

My conclusion was that I would use Wellseal for this application. Apply till tacky then stick the wire onto it, then apply another coat of Wellseal over the wire.

I always use Wellseal for general gaskets sealant and apply it with a small modellers paint brush. Mick Hemmings uses Wellseal on composite head gaskets, so it must be OK in this application.

Again, for clarities sake, I must stress this is my idea for use in this application, I have not actually tried it.
 
I do the same with Wellseal to and tried that with the JS gaskets but as they are literally paper thin and not totally flat where they have been cut out. This means they lift off and don't sit still like a normal type thicker gasket would. Also the wire being stiffer (just a little stiffer as its very thin) than silk thread is much more difficult to put in place as it tries to spring back not just lay still in Wellseal as thread does.

It is a delicate fiddle job and am sure people who have done it more than me (as its my first attempt) have some tricks or feel for it as with most things.

I was maybe trying to rush things a little to as the weather is getting better an am feeling the need to get the old girl out on the road. Jim's website says use rubber solution glue to hold them in place so i just wondered what the European equivalent of what he recommended might be as it may make the job easier. I really want to make sure it all stays in place as some of wire is very close to edges of pushrod holes as the copper rings are close in the area of my engine.
 
Years ago, a place I worked at speced Hylomar. We had it in aerosol form and the merest waft would do the trick. It is also quite tacky for a while so should do any placement duties too.

I have used Wellseal and the similar Ostite too, both fine, but Hylomar is my preference, especially the aerosol. Apply very thinly, a mere waft will do.

https://www.merlinmotorsport.co.uk/p/hy ... 0wodI2kCVQ
 
"GASGACINCH" is a contact cement sold for engine gaskets and has been around forever. Barge and Weldwood are other popular contact cement brands.

Rubber contact cement is what you want to use. They are are similar and readily available at any hardware store or office supply. Its very easy to apply the glue and stick down the thin gasket and thin wire and it stays in place without springing up. Let the glue firm up a little (so you can touch it) before adding the gasket and wire. You can always add more over the top. Don't worry about the glue being lumpy or irregular. It will smooth out perfectly when the bolts are tightened. Don't worry about the head being glued on - that won't happen - It will come loose easily. The glue will darken in color but it won't burn up.

I do not recommend Wellseal or any other kind of sealer. Just follow the instructions and don't overthink it or try another sealer method. It works perfectly as is. The only reason I recommend Pliobond 25 is because that is what Ron Wood used on all his copper gaskets - but he probably used what was immediately available when all rubber contact cements are nearly the same.

The copper gasket is very thin. You might be able to re-use it once if you take off the head and apply more glue without disturbing its position (I've done it). But its basically designed for one installation only. And if you damage it or cut it when trying to re-use it - replace it.

If you don't know what contact cement is - its that yellowish brown thick glue that you apply to each surface with a brush, wait for it to dry a little so its tacky - when join the surfaces without shifting them.

Note that I tried a bunch of different sealers and went through this process many times and nothing else worked as well.
 
nickguzzi said:
Years ago, a place I worked at speced Hylomar. We had it in aerosol form and the merest waft would do the trick. It is also quite tacky for a while so should do any placement duties too.

I have used Wellseal and the similar Ostite too, both fine, but Hylomar is my preference, especially the aerosol. Apply very thinly, a mere waft will do.

https://www.merlinmotorsport.co.uk/p/hy ... 0wodI2kCVQ


+1 I also had good experience with Hylomar on gasket's heads.
 
Thanks for the advice Jim unfortunately it's a little bit to late as i have managed to do it with Wellseal. I am certain i have never spent as much time on any gasket before in my life so fingers crossed. If it only works for a short time then of course that's my own fault and not yours and as i said in another thread am doing this to raise compression without changing pistons or machining metal off. I see this more as an experiment which easily reversible instead of a permanent job so if it works and performance is improved but the gasket fails (hopefully after a while) then it has been a worthwhile success.

Thankyou to others also for their help and advice hopefully in next few days the bike will be on road and i will have some fun finding out what is what.
 
toppy said:
Thanks for the advice Jim unfortunately it's a little bit to late as i have managed to do it with Wellseal. I am certain i have never spent as much time on any gasket before in my life so fingers crossed. If it only works for a short time then of course that's my own fault and not yours and as i said in another thread am doing this to raise compression without changing pistons or machining metal off. I see this more as an experiment which easily reversible instead of a permanent job so if it works and performance is improved but the gasket fails (hopefully after a while) then it has been a worthwhile success.

Thankyou to others also for their help and advice hopefully in next few days the bike will be on road and i will have some fun finding out what is what.

Please keep us posted as to how things work out Toppy, both with the general CR increase and the wellseal.
 
I've been using the .003" copper ring with the contact cement and the thin wire for years and its never failed or leaked. Before using the thin wire and the contact cement I tried string and different sealers around the pushrod tunnels and they all leaked.

Toppy - yours may work fine with the Wellseal but its very easy to stick the gasket and wire down in place when using contact cement. Its a quick job because the glue is tacky and holds everything down 1st try.
 
Jim, why not include a small tube of the stuff that is proven to work in the kit for a small extra charge?

It would seem to simplify things a lot, especially for non US customers who cannot buy the brand names you mention.
 
Fast Eddie said:
Jim, why not include a small tube of the stuff that is proven to work in the kit for a small extra charge?

It would seem to simplify things a lot, especially for non US customers who cannot buy the brand names you mention.

I'm too dumb to think of things like that. I depend on people like you to suggest it. So I'll see what I can find.

On the other hand - isn't yellow/brown contact cement (rubber cement) common as rain over there?
 
jseng1 said:
Fast Eddie said:
Jim, why not include a small tube of the stuff that is proven to work in the kit for a small extra charge?

It would seem to simplify things a lot, especially for non US customers who cannot buy the brand names you mention.

I'm too dumb to think of things like that. I depend on people like you to suggest it. So I'll see what I can find.

On the other hand - isn't yellow/brown contact cement (rubber cement) common as rain over there?

It depends Jim. Many things from, engine oils to paint, are actually totally different compositions in different countries even if the label says the same!

In the UK we do not even use the term 'contact cement' at all. We use the term 'contact adhesive' and a product called Evo Stick is the most common. But whether or not this contains the key ingredients that make the stuff you use so successful I have no idea... it might work... it might be a dismal failure!

Hence, supplying what you KNOW works would seem the most reliable way to good results.
 
I was also thinking a little tube of the recommended glue would have been great but i also thought it may lead Jim to have issues with send chemicals over seas as you get sometimes depending on import an export laws of different countries.

I also wondered if a CNC laser cutt or water jet cut full gasket would be better has it would be like using a normal size one. Though the first ones would be costly once the program was sorted many more could be made in future and costs would be more reasonable.
 
Hi, so is gasgacinch good for this ??
as it seems easy to find and buy from overseas.......!
 
marinatlas said:
Hi, so is gasgacinch good for this ??
as it seems easy to find and buy from overseas.......!

Yes - use gasgacinch. Again - this is just plain contact cement (or contact adhesive). I remember using it way back in the 1960s. Is this stuff available in the UK? If so then our glue supply problem is solved.
 
Status
Not open for further replies.
Back
Top