Double head gasket on 181
 

Looks like the PO used 2 head gaskets. The head bolts didn't seem very tight either but this is the first time I've removed one. Tons of leakage on the exhaust side.

I'll assume from this that 2 head gaskets is a bad idea.

gonna clean it up and try to sand down and level the head.

http://i1375.photobucket.com/albums/...psiqeh46cf.jpg

http://i1375.photobucket.com/albums/...psthgiu6yo.jpg

http://i1375.photobucket.com/albums/...ps5xcdpxd8.jpg

I would wholeheartedly agree.

In the words of my late father, "some people's kids"

yeah the list of PO mods is pretty long on this one, some to be expected since its a replacement engine but some of this I don't quite understand.

It did start and run though.

Check out this throttle/Gov setup. no linkage, no spring.
It's on the list, pacing myself.

http://i1375.photobucket.com/albums/...psxflxev4e.jpg

I wish I had thought of that setup when I was a kid. Much more reliable than string.:biggrin2: Young and dumb

WOW is all I can say! :bigthink:

Here are some pics during and after sanding down the head as described in the tech section.

http://i1375.photobucket.com/albums/...psrki87ogs.jpg
http://i1375.photobucket.com/albums/...psqwqex1w4.jpg

Is there any trick to getting the block side surface that smooth?

How do you keep crud out of the cylinder bore while cleaning block and piston?

Poor little feller!
 

I just want to hug this cub and fix him. Wierd!!

You need to keep sanding on the head. It's not flat yet.

I put the piston up toward the top and clean with a die grinder with a 3m roloc disc. (See pic) You can get them from parts stores..... sometimes. Then when done, clean off with brake cleaner and blow the bore out with compressed air. Spray brake cleaner in the bore if necessary, then blow it out again.

Attachment 56249

Thanks Jonathan.

I'll sand the head some more. Is 150 grit too coarse? I've been using 220.

Here are some pics. first time working on Valves.

Lapping the valves:
http://i1375.photobucket.com/albums/...psgmzesrdk.jpg

Magnet was a big help getting the keepers back on:
http://i1375.photobucket.com/albums/...ps90topjes.jpg