81' KZ1000LTD no compression

I have a subtle way of scolding. They get the message without my getting upset. In fact it's fun to see them squirm. :woohoo:
Steve

He kinda tried poking at me like it was my fault it blew up.. like the bike had some sort of issue that caused these problems when I sold it to him. I replied "Well.... it had oil in it when I sold it to you."

Kitten Tooth wrote:

missionkz wrote: Did you think to check the cam shim gap before tearing it apart?
It sounds more like all four cylinders have a bent valve(s) from neglect, rev ABUSE or massive overheat from no oil?.

Im almost positive he did all of these things. He kept bragging about how fast he could get it going and sustaining those high speeds as well. This engine wound up to almost redline for 5-10 minutes straight probably made it do some colorful stuff... especially when it was low on oil.

Wow, this is epic. Almost into Darwin Award Winner territory.

Run (don't walk) AWAY.

My daughter came out to visit last year. I checked the oil in the car I had bought for her two years earlier. NONE. I went into town and got oil for her. She couldn't say anything. Grew up watching and helping with the bikes, cars and my truck. I cut her some slack and told her to check it on every fill up or 300 miles. By the look on her face nothing else was needed. :whistle:
Steve

Sounds like your buddy killed the bike. My wife loaned my gas weed eaer to a friend when I was deployed....came back with no compression. He didn't know gas weed eaters run on pre mix. (back then all were 2 strokes) He had to put gas in it while he was weed eating. It quit runing for some reason. :whistle:

I'm glad it wa a cheap weed eater an not a Echo.

I DON'T LOAN TOOLS.
Steve

I take that back, I did loan my neighbor Jeff my compressor. His was on a job site 60 miles away. Found out he had his helper using it while he was there. I could have used the work. Never will happen again.
Steve

Pour ATF in cylinders to check if rings are leaking.
When oil is low, usually crankshaft bearings die first, but this crank has crank roller bearings, so it is hard for me to guess.

Well the machine shop has gotten back to us on the condition of the heads. He needs all new intake and exhaust valves, a couple new guides, and 4 new pistons. Now hes talking about maybe porting the head. I think the bottom end came out of this un-scathed.
So on the topic of porting heads.. What to do what to do.... I remember someone (I think it was Larry C) who said a mild port job and some GPZ1100 cams would make that engine wake up quite a bit? I think he said something like 375 lift on the GPZ vs less with the stock ones? Whats your guys' opinion? I don't really even know where to look for cams let alone what to look for. This is what im looking at so far... Cylinders are only gonna be .25 oversized. Stock BS34s. starting off with stock 122.5 mains (im sure some jetting/syncing and tuning will be needed). Will be running a Kerker 4 into 1 with no muffler (unless I find it for him lol)

any help is appreciated as always and thanks for all the info so far,
KT

Please post prices.
I suggest asking machine shop for all your old parts, valves, guides and pistons.

It's a 30 some year old engine that's been treated like shit and beat like a step child
I'd bet there's more stuff hurt then just the top end.
I wouldn't think about putting a fresh top end on it with out splitting the case's for a look.

zukdave wrote: It's a 30 some year old engine that's been treated like shit and beat like a step child
I'd bet there's more stuff hurt then just the top end.
I wouldn't think about putting a fresh top end on it with out splitting the case's for a look.

yup!
They are tough but as I said in the beginning, the abuse is obvious and I'd be afraid to invest $800 or more in major head repair and boring with new Pistons, etc!