2 Stroke help ! Gasket questions.

[bigredhead]

Ok.... my friend just got his cylinder back from the shop.. 20 over, new wiseco piston and an entire gasket kit.

He got the Versah kit, it contains the cylinder base gasket.. the copper gasket, exhaust gasket etc.....

What should i use to seal them up ? install them dry ? use sealer ? any brand recomended..

I have a tube of Loctite " Gasket Elliminator " 518... but i don't think this will work on a cylinder head ? will it ?

I will have a torque wrench in my hands tonight ...

One concern, the studs on the cylinder .. one of them is ' loose ' .. the hole is bigger than it should be and the stud has play in it.. i was considering a tad of " JB WELD " to hold it snug..

Tips Tricks or anything else anyone can suggest.. i'm open to it all !

Oh BTW: This is a DT 175 Yamie.

thanks.

[nd4speed]

Leave them dry.
Permatex High Tack gasket maker on the case where the halves come together if this is a porblem area. My lt250r is seeping there and that is what I will do next time. Other than that Permatex high temp (black?) on exhaust flange at head and pipe at flange?
Re-tap for a larger tappered stud?

[bigredhead]

My friend was told by the guy that did the bore job that he should use gasket stuff between the cylinder and block .. just like you mentioned.. but my friend could not remember wich product he was told to use ! lol..... i have a tube of loctite 518 but that stuff stays wet, does not dry, and i did not want to use that on a cylinder....

Tapered studs... hmmmm never heard of those before. will look into it.

Thanks for the info... anything else to know before i get into it ?

[MTS]

use permtax "High tack" gasket sprayer on the head gasket and a Semi drying liqid gasket such as YAMABOND or threebond "1104" for the base gasket if the gasket areas are gouged..if not dry, also the semidrying gasket for the case halfs

[sblt500r]

yes always install gaskets dry. even the copper head gasket. only time you would use a sealer is between some crankcase halfs and if the gasket surfaces are gouged out.

some exhaust gaskets are heat sensitive so when they get hot they sorta melt to seal the space up. and if its a copper o ring it will crush to the shape of the case and pipe.

make sure you put the piston in correctly. the arrrow points toward the exhaust. and lube it up good with 2 stroke oil so you don't cause a cold seize.

[bigredhead]

Awsome.... thanks guys !!!

We got all the surfaces cleaned up.. and steel wooled them clean as a whistle.. and got hold of a torque wrench, so tonight we should have it all assembled and running if it all goes well !

thanks again.. if you think of any more things to share.. please do !

[bigredhead]

Well.. so far so good.

We got the piston installed.. cylinder on the tranny.. then spent an hour trying to find the cylinder bolts....

I'm usually a stickler for these things.. parts have to be put in their proper place.. and kept together... and these were MIA..

After an hour of searching. we gave up for the night.. 2 hrs later he calls me up to inform me he found them in the bag that he got the cylinder back from the shop... argh...

it continues tonight. wish me luck !

[bigredhead]

Well.. the situation went from not so bad to worse... ... ...

Got a torque wrench.... clymer says 18 ft/lbs but the bolts don't hold up to it.. strippage !!!

arghhhh

[Cody]

That bites bad.. :(

[RedRider_AK]

I doubt that wet stuff is gonna hold up to the compression of a 175 2-stroke, especially with a wiseco piston.

[OldSchoolin86]

No gasket should ever go in dry.

You can get away with dry but the right way is to use "copper coat" from permatex. It's a spray that lays a thin coat of copper based sealant. It's thin like paint. You should use it on all gaskets, especially the head gasket.

EDIT:

PERMATEX® Copper SPRAY-A-GASKET® Hi Temp Adhesive Sealant
Fast drying, metallic copper sealant helps dissipate heat, prevents gasket burnout and improves heat transfer. Fills minor surface irregularities. Seals instantly. Fills hot spots and surface imperfections. Temperature range -50°F to 500°F; resists all types of automotive fluids, especially gasoline. Level 2

Suggested Applications:
Cylinder head gaskets, carburetor gaskets, exhaust manifold gaskets and other high temperature applications