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Showing posts from August, 2015

Carbon Sleeve for the Tz125 End Can

The end can on my TZ125 was in a bad shape and needed re-packing. I had a piece of carbon sleeve laying around at the workshop, so I decided to give it a try.
Inside diameter of the carbon sleeve is 60mm while the stock aluminum tube is 62mm. The flange that bolts on the expansion chamber was modified on my lathe and for the other side I fabricated a shorter stainless steel end piece. And the end results with photos of the stock and the new end can.

Yamaha TZ125 4JT, Leak Down Tester kits, for sale.

Leak Down tester kits for the Yamaha TZ125 4JT bikes can now be purchased via my online store.

The kit will fit all Yamaha Tz125 1994 - 1997 models. Most probably it will suit later TZ125 models as well though I haven't verified this yet.
The leak-down tester is an essential tool for any high performance two stroke engine. This kit is installed in place of your carburetor and by pressurizing the engine cases you can check for any air leakage due to worn mating surfaces, erratic torque values due to aged parts, worn crankshaft seals etc. It is a necessary evil that it will help prevent catastrophic damage to your engine and keep performance up. A very valuable tool for a two stroke engine, handmade with care.


Directions of use: 
Testing can take place after a newly assembled engine to verify that everything is leak free, on a bike you just bought and you need to check crank seals condition etc.
Place the tool in the carb manifold, seal the cylinder head with a normal spark plug and…