Gasket goo

ted johnson · Post by **ted johnson** » Sat Apr 26, 2008 2:39 pm

Happy weekend. I have a magnesium case with a slightly beat up manifold gasket surface. Does anyone know of a silicone (or other thick agent) gasket sealer that will stand up to methanol? I need to be able to remove the manifold in the event that the rod needs to come out

. Thanks in advance! Ted

Dean Seavers · Post by **Dean Seavers** » Sat Apr 26, 2008 4:14 pm

Ted-

I swear by Hylomar. A bit pricey, but worth it.

Dean

ted johnson · Post by **ted johnson** » Sat Apr 26, 2008 5:24 pm

Thanks, Dean! Do you have a supplier? It's a new product to me! Ted

REAR · Post by **REAR** » Sat Apr 26, 2008 5:41 pm

Ted,

Check Loctites website or...

Get yourself some Yamabond. I think its hylomar but not sure but it is good stuff.

Local Yamaha Dealer should have it.

R.E.A.R.

Rob Voska · Post by **Rob Voska** » Sat Apr 26, 2008 5:53 pm

You can also take a light cut off of it so you have a good surface. Also had luck with the copper spray and it comes off easy.

ted johnson · Post by **ted johnson** » Sat Apr 26, 2008 7:42 pm

Thanks, guys. Rob, next time the engine comes apart I will have the surface milled. It's a VERY nasty engine to reassemble

, so I don't want to take it apart until it needs real attention. I generally use K&W Coppercoat spray, but in this case, I think a thicker sealer will do the trick best. I will check the auto parts places for the Hylomar, and failing that, I will run up to Albuquerque to the Yammie dealer. Thanks again to all! Ted

Dan Flanders · Post by **Dan Flanders** » Sun Apr 27, 2008 12:23 am

Hi Ted-
You can get hylomar from Harbor Freight for $4.95 a tube (usually $14-$21). Dean turned me on to the stuff and it is an outstanding gasket dressing.
http://www.harborfreight.com/cpi/ctaf/d ... mber=97824

Tom Smith · Post by **Tom Smith** » Sun Apr 27, 2008 2:27 am

REAR recommends Yamaha gasket sealer? Holy American fan cooled engines only Batman.

REAR · Post by **REAR** » Sun Apr 27, 2008 6:28 am

No recommendation on the foreign stuff at all. Thats why we gave the Loctite info, if we had our choice we would go American.

R.E.A.R.

ted johnson · Post by **ted johnson** » Sun Apr 27, 2008 8:52 am

Guys, guys! I agree-American ONLY-and ordered a tube from Harbor Freight - Thanks, Dan! It'll take longer thah the shipping time to get the manifold machined, anyhow. I took a second look at the gasket surface, and probably could have gone with the Copper Coat, but a little leak insurance won't come amiss!.....Just thought, if we use new Tilly carbs, the "American only" goes out the window; Irish, you know...

Oh, NO! - I'm using Mikunis! Thanks for all the help. I and Charlie will see you at Fremont! The old Scorpion may yet be ready. Ted

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