Gunk on front of engine

Rogwillsie

New Member
Oct 28, 2008
30
0
0
Seattle, WA
There are no noticeable problems with my engine, seems to run fine, the head bolts are snug. But, I noticed some black gunk on the top of the muffler pipe right next to the head and the same on the front of the head and engine. Can someone tell me what is causing this? Is it a big, or minor, problem?
 

jasonh

New Member
Jun 23, 2008
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36
Longmont, CO
Gasket material with high-temp (orange) RTV on both sides works for me.

I got a new motor and it came with an exhaust gasket with a thin piece of metal on the front and back of the gasket. Never seen those. Should I keep em and just use the RTV still?
 

Rogwillsie

New Member
Oct 28, 2008
30
0
0
Seattle, WA
Thanks, guys. I suspected a blown exhaust gasket and you confirmed it. I'll remove the exhaust pipe to make sure and get some gasket material. Thanks for the recommendations on gasket replacement.
Rog
 

Bikeguy Joe

Godfather of Motorized Bicycles
Jan 8, 2008
11,843
236
63
up north now
Gasket material with high-temp (orange) RTV on both sides works for me.

I got a new motor and it came with an exhaust gasket with a thin piece of metal on the front and back of the gasket. Never seen those. Should I keep em and just use the RTV still?

That's the type that SHOULD come with these engine kits. They aren't very good for re-use though.