Pickin up a dirt bike

[Kenny_McCormic]

Fins are shorter in a spot for a pipe (I assume that factory), thats all I see.

 

[crazycart]

thats all I see.

Its what you dont see

 

[Kenny_McCormic]

No head gasket?

 

[crazycart]

Lol, think more general.

 

[Kenny_McCormic]

Exhaust studs?

 

[crazycart]

GENERAL-ER


Lol...

 

[Kenny_McCormic]

I see a top end to some 100cc dirt bike, the head appears to be stripped, maybe polished, the jug is painted some red-orange color and appears to be ported.

No spark plug?

 

[crazycart]

Fyi the head is black and the fin ends are polished.

Anyway, on almost ever bike there is a exhaust port and a ______ port. Fill in the blank

 

[Kenny_McCormic]

Intake port

I dont see how it being a reed engine with a crankcase mounted carb is special.

Boost port???

 

[crazycart]

It isn't a reed engine, its rotary valve. I didn't say it was special, i said there is something different about that cylinder, no intake port. Just trying to see who would notice.

 

[Kenny_McCormic]

Well it isnt a piston port, thats for sure.

 

[jr dragster T]

You lapped the head with that little cup of blue stuff which appears to be lapping compound?

 

[crazycart]

Nope that's wax. My dad is a dental technician and he has a workshop downstairs.

I lapped ( more like smoothed) the head with a sanding type disc in a drill. It just polished it and removed the dirt.

 

[crazycart]

Got the rings, waiting on a new wrist pin bearing.

 

[crazycart]

Wrist pin bearing arrived, and its all together. Fired right up after some point adjustment.

 

[crazycart]

Got to ride it around today, there was definitely more power. In the mid range you can really notice when the power comes on. It isn't too substantial, but its better than before. It wanted to pull up the front tire, but couldn't because it would just spin on the snow. Its still not 100% yet, its got a leaky exhaust, and the head was leaking. My plug insert also broke. Otherwise i'm quite pleased with the results. BTW, i feel pretty lonely in this thread

C'mon, post whorz!

 

[jr dragster T]

Post-A-Whorz at your service, How can I help you? Lol This entire thread is like Kenny and CrazyCart. Dont worry I'm here always here to fill a thread with useless info just like this thread Lol.

 

[bigfootrules31]

ill race you on my dt(Death Trap haha)175, or as i like to call him "captian rattly"

 

[Kenny_McCormic]

Try riding around here, my 250 wont move in this much snow! I had to hold it WOT in 3rd while flinstoning it to get the heavy pice of junk out of the hole I dug.

 

[Kaptain Krunch]

looks good man, $50 is a steal, i would put that engine in a kart, that would be fun. I just bought a '87 suzuki dr 100 for 50 bucks, runs great the engine was rebuilt a year ago and the bike has been babied. I got it from my friends dad, he let me know i was getting a good deal haha, he made sure i know he payed $80 for the o-ring chain alone.