Motoseal or Ultra black?

[Pioneer]

What are people preferring to seal up the pans on clamshell saws?

 

[Vintage Engine Repairs]

Generally I’d suggest you use what the service manual recommends. It’s worth mentioning, clamshell engines require a gap filler, motoseal is for machined flat surfaces. If you don’t apply enough you won’t fill the gap, if you apply too much it may not fully cure. I have seen it used successfully, but I have had it fail a pressure test after 24 hours.

 

[The Shooters Apprentice]

I used RTV red on the ones I’ve done.

 

[RedneckChainsawRepair]

For these. I use what stihl uses on clammys. Dirko HT red

 

[a. palmer jr.]

I use the Dirko on clamshells also. If it's good enough for Stihl...

 

[grizz55chev]

I must be getting old and grumpy, this topic has been beaten to death like a dead ! Might as well be an oil thread!

 

[jellyroll]

Motoseal is what i use most of the time for flat flanges.
Permatex no#1 is what i use for clamshell engine that stuff sets hard as concrete and can handle anything.
Permatex no#2 is great substitute for dirko.

 

[jellyroll]

I must be getting old and grumpy, this topic has been beaten to death like a dead ! Might as well be an oil thread!

 

[a. palmer jr.]

Motoseal is what i use most of the time for flat flanges.
Permatex no#1 is what i use for clamshell engine that stuff sets hard as concrete and can handle anything.
Permatex no#2 is great substitute for dirko.

Dirko is getting kinda high priced...

 

[jellyroll]

Dirko is getting kinda high priced...

I use permatex and have never had a problem.

 

[ballisticdoughnut]

Dirko HT or Hondabond HT is what I use. Most any high temp RTV will work. Permatex Right Stuff is also really good.

 

[grizz55chev]

Dirko HT or Hondabond HT is what I use. Most any high temp RTV will work. Permatex Right Stuff is also really good.

Right Stuff is my choice.

 

[cookies]

Whatever I have on hand, typically its honda bond, permatex ultra black/grey, rightstuff, toyotas version. They all work, the trick is learning whats enough but not too much and allowing it to cure 24 hours above 75 degrees and really cleaning the surfaces of any/all oils including the oil from our skin.

 

[stihltech]

Moto seal has given the best results in the shop on machined surfaces.. Just follow directions.

 

[a. palmer jr.]

I keep Dirko, Motoseal, and a tube of Permatex Red on hand.

 

[Chevboy0167]

I jumped on the Dirko bandwagon when I re-slugged my first Stihl MS290. Clamshell engine. After the fact, I looked up the specs on it. It's just high temp silicone with little to no fuel resistance. O well.... it worked!

Is Dirko resistant to fuel?
No. Dirko is unfortunately not resistant to fuel. For use with contact with fuels, we recommend our sealants Curil T2 or El-Liq 73 and El-Liq 74.

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