1971 TM400 Engine Gasket Sealer

[TIKI]

Hello All,

 I am assembling a 1971 TM400 engine and wondering if gasket sealer is recommended on the new gasket between the 2 case halves, if so what product? There are no major imperfections but a few very light nicks in the aluminum.  I am more concerned with an air leak in the crankcase than transmission oil leak. I have the service manual which is very vague at best. Thanks Randy

 

[TTezza]

Loctite gasket eliminator works for me

[TT5 Matt]

grey 3 bond works well too, so good yamahas dont even use a centre case gasket

[ITDOG]

x2 on the three bond

[bazza]

 x3  on three bond

[Oldfart]

Loctite 515  all day every day.

[shelpi]

loctite 515
3 bond
aviation gasket sealant
no matter what you use still put the gasket in, for the correct spacing of gear box shaft shims

[TIKI]

Thanks  for the replies guy’s. I guess I’m a little paranoid as I have not split the cases before. I have a can of Permatex spray copper and I think I will spray a light coat on each side of the gasket and call it good. The general consensus is with a gasket I really don’t need any sealer at all.

[matcho mick]

a light spray that will work the best on the new gasket,good luck,

[Lozza]

Wurth have a Threebond type instant gasket in a small pressure pack, much cheaper, easier to apply and no more wastage due to going off in the tube or nozzle. Think it was $36 for 300g can and trigger nozzle

https://eshop.wurth.com.au/Adhesive-and-sealing-compound-Super-RTV-silicone-SILSEAL-HIGHTEMP-SUPER-RTV-GREY-200ML/08933216.sku/en/US/AUD/

[mick25]

Keep your gasket goo's in the beer fridge, in a plastic bag with a banana and they won't go off in the tube.

Good tip , I rember as a kid dad saying to mates if they have a wining diff put a banana in it 
He tryed it on a old ford transit van it didn't work 

[brent j]

Keep your gasket goo's in the beer fridge, in a plastic bag with a banana and they won't go off in the tube.

Good tip , I rember as a kid dad saying to mates if they have a wining diff put a banana in it 
He tryed it on a old ford transit van it didn't work 

That Transit..........................I remember following a bus full of tourists on the dirt road around Opo with your dad full lock sideways on every corner at about 5km/h. Tourists didn't know what to think

[mick25]

Keep your gasket goo's in the beer fridge, in a plastic bag with a banana and they won't go off in the tube.

Good tip , I rember as a kid dad saying to mates if they have a wining diff put a banana in it 
He tryed it on a old ford transit van it didn't work 

That Transit..........................I remember following a bus full of tourists on the dirt road around Opo with your dad full lock sideways on every corner at about 5km/h. Tourists didn't know what to think

That's the one Brent funny stuff
A Maori mate of dads borrowed the van to launch a boat off opo boat ramp
And he reckon the brakes failed it ended up under water to the roof , when they pulled it out of the drink it had a octopus on the drivers seat , only in opo hey
Sorry for the off topic

[PEZBerq]

Opo? Opotiki, Opononi? Whatchatalkingaboutwillis?

[Lozza]

Keep your gasket goo's in the beer fridge, in a plastic bag with a banana and they won't go off in the tube.

No way I'd fall for that one