I am going to be changing crank bearings and seals on a TY80. Before I tear into it I would like to have my parts together, the only thing I am unable to figure out is if there is a center gasket or not. Did they just use RTV silicone or Yamabond and not an actual gasket?

So far this is my list of parts I will need: (if I missed anything please let me know)

bearings

seals

head gasket

base gasket

rings

crankcase cover gasket

Reed cage gasket

Thanks

on edit: I did do a search here, but was unable to find the info.

Edited October 31, 201015 yr by ZIPPY

Hi,Silicone is all you require .Regards Scorpa250

Hi,Silicone is all you require .Regards Scorpa250

Thank you very much!

What about conrod & bearing? If was doing job i would split crank! And are gearbox bearings ok?

What about conrod & bearing? If was doing job i would split crank! And are gearbox bearings ok?

I have not split the motor yet, but so far all indications are that those are all okee dokee,

I will know more after I actually split it.

Just trying to get a little more info before tearing into it.

Thanks all.

Hi there

I've just done mains and seals on a ty 80 engine ....

6204 /C3 main bearings (go for a good brand )

Mag side crank seal 20x35x7

Clutch side crank seal 28x40x8

Front engine sprocket 25x40x5

Gear selector shaft 12x22x5

Sealant for centre cases

You might need a puller (or make one) to split the engine cases

Have fun

Thanks for the sizes, should be very helpful.

Gday, use Grey 3-bond for the cases. Also known as Yama bond etc. Expensive - but awesome - make sure your gasket surfaces are very clean first. A scotch pad works well.

Cheers,

Stork