Author Topic: My recent engine seizure (Read 18596 times)

Pricecheck · « **on:** October 05, 2014, 01:03:58 AM »

Well, I'm pissed again. Yesterday I took the bike out to ride and within 60' of very mild riding (after a warm up) my bogged and died. Kick start was stuck at TDC as well.

Tonight I took it apart and here's what I found.

The reason why the clutch cover is off is because I was hoping it was the kicker shaft or gears.
I'm sick of this crap. The first two engine rebuilds were my fault. This one is beyond me. I do have the memory of reading Kyle b on the crank a while back and im wondering if that crank was rebuilt and the tins were damaged and made to fit. Nobody will know.

I'm not tackling this and my wife is sick of this motor. Gotta find the budget and see what time Neil has for this disaster!

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PORTED R · « **Reply #1 on:** October 05, 2014, 01:47:52 AM »

Looks like a classic wiesco crank blow up

Pricecheck · « **Reply #2 on:** October 05, 2014, 04:28:47 AM »

It took me out of riding probably the whole time here. It's about to start heavy snowing, then another deployment in the beginning until sept. Then that's winter again until April. Then it's not worth messing with the price unless I'm sick of not riding, which I will be.

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Bowtie316 · « **Reply #3 on:** October 05, 2014, 08:07:46 AM »

Wow that blows man. Thats a 4-mil right?

You need a backup motor for as much as that one is down.

mennis1971 · « **Reply #4 on:** October 05, 2014, 08:39:31 AM »

Crank tins can be easily damaged, not to mention the whole wiseco and older hot rods problems. Crankworks just rebuilt my 85cr500 crank(oem crank with a NOS OEM rod I had stashed away- you can't get a new oem crank or rod). They went ahead and welded the tins on it(no that wasn't free lol), but I'm glad they did. I've seen way to many pics like above.

That sucks PC. Was looking forward to possibly seeing you at Goldrush! At least it didn't happen there. My motor will prob be freshened up after Goldrush. It doesn't have that much time on it, but I've ran the crap out of it, plus it has a used crank in it(no names sharpied on it tho). Hopefully your cases didn't get damaged...

Pumashine · « **Reply #5 on:** October 05, 2014, 09:50:51 AM »

Wow, hopefully the cylinder and cases are OK. When my tins came off the skirt on the puma broke and also took out the cases at the bottom. Now, all my tins are welded on.

rsss396 · « **Reply #6 on:** October 05, 2014, 11:44:21 AM »

I may start welding tins when I have the time I f I do I want 80.00 plus shipping

udontknowme · « **Reply #7 on:** October 05, 2014, 12:12:00 PM »

can you give more specific details on the crank assembly ? what manufacturer is it ? what rod is it ? has somebody previous to you rebuilt it ?

the tined cranks are not something that any joe blow can rebuild. takes a special fixture so it can be pressed together correct the first time without needing to hammer on it

hontrx265r · « **Reply #8 on:** October 05, 2014, 12:19:11 PM »

It also looks like it was lean.

etccb · « **Reply #9 on:** October 05, 2014, 12:51:23 PM »

Well that perfect sharpie kyle crank didn't stay together long.
You just cant find any luck pricecheck. You were afraid of some corners being cut earlier and this fits that possibility. Best to move forward with some different hands this time.

udontknowme · « **Reply #10 on:** October 05, 2014, 12:57:56 PM »

Quote from: hontrx265r;43902

It also looks like it was lean.

could you explain ? if the a/f is not right i think generally the piston is the first to go but maybe youve got a different theory

Bowtie316 · « **Reply #11 on:** October 05, 2014, 01:12:47 PM »

To me it looks like the tins started loosing pieces and thats what got up into the cylinder and head before the tins let go and locked it up.

hontrx265r · « **Reply #12 on:** October 05, 2014, 01:26:03 PM »

Obviously the crank failed.. however your plug is white and the piston has a pattern deep in the mess of particles that were floating around that looks like it could be detonation. Now again im looking at pictures on the net, but my initial feeling is two things going on here.

F-Red · « **Reply #13 on:** October 05, 2014, 01:39:53 PM »

Those damn tins! Fix the bitch, get your ride on!
That's a good deal Dave, that should be a must on all builds.

Pricecheck · « **Reply #14 on:** October 05, 2014, 01:59:18 PM »

Well, I was lean initially moving here but on the pilot. The plug I put in was a used that I just grabbed because my other was giving me issues (a guess). My bike doesn't like anything to do with cold weather.

When I blew it at gold rush bdt went threw the motor and put the Kyle crank in with the new 4 mil hot rods crank and piston and whatever else. Then I blew it like an idiot due to leaning out the mix. I went on la sleeve and bought the piston kit and Neil knocked out that top end bore and hone.

The thing has been ripping. It can lug down low and has got the balls to pull it out of a hole. I've been very impressed and even a guy with a yfz (not just some idiot) that I let ride it said it flat rips. Flies nice and straight too and better than his yfz!

This did this a while back but I was able to kick it eventually and it never did it again. Then the exact same thing happened here and the damage is shown.

Now on the rebuild. Neil will do the work for me but I just don't know when. I'm still into XC but now some MX. I'm liking mine but I think it might need another cylinder job, the last one. Due to this im thinking about a 363 instead. I like power and I've heard that there's no lacking it there. Whatever top end I go with i will have neil hit that motor with a fine tooth comb and get the tins welded.

I'm not sure on what crank is in it. I'm not going to split the cases and that crank will not move at all.

About gold rush. I couldn't make it this year since im in alaska. I really wanted to get out there and kick ass but this move here took that opportunity away.

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