Turning seized engine

[shu5720]

Hey guys. New to the blaster, it was just given to me with seized engine. 1988 year. I am in the process of getting it loose and was wondering if you could help me with a good place to apply pressure to help the engine start to turn. I am leary of using the kick start lever with too much force for fear of breaking it. Looking to rebuild the top end once I get it moving. thanks for help, the site has a ton of useful info.

 

[regal81455]

why would you attempt that? just open it up and rebuild it ( if its seized its gonna need atleast a topend and probably crank and bearings maybe more ) depending on severity you may be better off just buying a motor off ebay, here, or somewhere...

if you cant remove the piston because its stuck in the cylinder soak it in kerosene that should help free it up a bit...

 

[shu5720]

yeah, that was my thought. I wanted to at least get it to move so I wouldnt have to beat the top end to get it off. Plan is to rebuild at least the top end. Any thoughts on how to get it to move??

 

[89custom]

through it onto a highway in heavy traffic. bottom end rebuild is expensive and a pain in the ass dont bother lol.

 

[regal81455]

yeah as i said soak it in kerosene, should free it up enough to use the kicker...if it doesn't i wouldn't bother any other way.

 

[00blasterRESTO]

probly not lookin at a bottom,, if its locked up, its probly ring in cylinder, probly clean the bottom end out and check for crank tolerances, and hope it shifts nice, i got mine loose "years ago" but put some penetrating oil in the cylinder and see if ya cant work it loose probly pull the head and mabey give it a few light bops while "sorts trying" to turn it over..... mine locked up tighter than sh*t skidded me from 55 to nothing in a hurry and i took it home and got her loose and only had to go .20 over

 

[shu5720]

thanks. I figured I'd end up boring several sizes. Started the resurrection last night. Plan on pulling the top end tonight. We'll see.

 

[jdub86]

When i bought my blaster it came with a spare lower end with a seized crank before he gave it to me he coated it with some silver looking greasy substance he said it releases ceased engines.. Well last night i actually got the crank to turn... the bearing is shot in the crank tho. id need a whole new crank replacement.. I will find the name of the substance within the hour im dropping by for a visit

 

[shu5720]

thanks jdub86. That would be awesome. I realize what the best way to do it would be but I am trying to get this running without dumping alot of $ into it. If it turns out to be worth it, wont mind upgrading later.

 

[jdub86]

I forgot to ask him but i will be back i gotta pickup another blaster off him.. 2nd one im actually going to use most of it for parts..

As for that seized crank... i think you will most likely have no choice but to replace the crank and piston ..... the crank i un-ceased last night turned but not well the bearing is done in the crank..

Crank-shaft 150$ - Ebay (Hot rodz i think)
Piston kit - 70$ - Ebay - Wiseco Brand

only problem is taking the crank case appart and putting in the new crank shaft is no easy task for a beginner ive been researching it but here are a few helpfull videos..

Blaster Engine Rebuild (Time Lapsed)

Motorcycle Crank Case Rebuild... Not a blaster but it will give you some insight to how to do this...
Part 1:

Part 2:

Part 3:

Hope this helps!

 

[shu5720]

jdub, thanks again. I dont know if the crank is seized. I think it's only (hopefully) the top end. It was put away running, but sat for a long time. I tried to move the kick start but it was no go. I have kerosene in the head now to help loosen it up so I can pull the top end off. I really hope that is all it needs. I'll know more tonight.

 

[jdub86]

Let me know how it goes!

 

[pittboss45]

I've got a good used crank for sale if interested.

 

[shu5720]

will do jdub. Pittboss, where are you in case it comes to that? I may be in the market for jug/piston setup.

 

[shu5720]

Well, started the tear down tonight. Took the top end off. The lower end couldnt have been seized tighter if it was one piece. Damn. Gotta take a step back and decide if it is worth it to continue. I guess I'll start looking into an engine.

 

[jdub86]

find out what is ceased if its the crank you can get one on ebay for 150$ assembled and ready to install

 

[jar1zx]

dont waste good money on paying a shop 2 put in a used crank. go new and new crank bearings. then u know what u have

 

[jdub86]

i think the one on Ebay is a Fully assembled brand new Hot Rods Crank...

Here she is!

eBay Motors: HotRods Crank cranshaft Yamaha YFS200 blaster crank NEW (item 270243962269 end time Jul-05-08 16:28:59 PDT)