Base gasket scrap time, Yosh pistons?

[Guest]

Replacing the base gasket, please pray for a successful scrap of the 30 year old paper gasket. It's stressfull, fear of failure to keep out of block



Do all GS1100e come with Popy pistons? Kinda kool!

[Nessism]

Those pistons are aftermarket. You might want to measure the bore diameter, they may be oversize.

[Sunburn]

They are over-sized, figured that the hard way, after installing a stock gasket. cylinder bore is 73.5. Ray hooked me up with the correct gasket, 2nd time is the charm.


One side of the piston has the yosh stamp, with popy on the other. I guess from yoshimura kits from back in the day. Don't know if still available.

[Sunburn]

I would not wish removal of the base gasket job on anyone. Took most of the day today and part of last night. Just a nightmare. Thank god my next base gasket is metal.

[Nessism]

Spray on gasket remover helps. Still takes a lot of time, but it's slightly better.

[Sunburn]

Spray on gasket remover helps. Still takes a lot of time, but it's slightly better.

was using that as well and it did help. But it was still hell. Not to mention re-installing the base took 5 hands and some patients as well. Rest of the assembly seems easy now.