I think im going to be sick

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26 May 2008 11:48 #215960 by sully73
I think im going to be sick was created by sully73
k here the scoop, did a compression test that should #1 at 50#, others were 160#. did the leak down test and it was blowing back through the exhaust. k not a big deal at this point, pulled the head thinking ill do a valve job on it and be good. so when i pulled the head off, i notice #1 want quite at tdc while number 4 was. rotated the engine, @and 3 came up at same rate and hit tdc same time. so the thing i think is going to put me over the edge is, #4 hits top dead center while #1 is still about a 1/4 from the top. is this normal or do i have a bent rod or f'd up crank.:blush:

81 kz1000 ltd
72 cb750 chop

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26 May 2008 11:52 #215962 by PLUMMEN
Replied by PLUMMEN on topic I think im going to be sick
probably twisted crank:(

Still recovering,some days are better than others.

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26 May 2008 11:54 - 26 May 2008 11:55 #215964 by sully73
Replied by sully73 on topic I think im going to be sick
i didnt need to hear that crap. but that would explain why i had a hell of a time getting the carbs set.

81 kz1000 ltd
72 cb750 chop
Last edit: 26 May 2008 11:55 by sully73.

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26 May 2008 11:58 #215966 by Makarth
Replied by Makarth on topic I think im going to be sick
i imagine thats better then a bent rod. Don't worry about it too much bro. you can pick up a good crank on ebay for 60 bucks shipped pretty easily


1977 kz1000 - Megasquirt project @ 40% wiring, plenum, and exhaust<--(done!)

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26 May 2008 12:02 - 26 May 2008 13:45 #215967 by sully73
Replied by sully73 on topic I think im going to be sick
just one of those things that you hear "oh it just needs a battery" and spend a grand to buy a bike with a bent crank. really pisses me off. but to be fair, i got the bike from a friend and i know he wouldnt willingly sell it to me if he knew, i guess it could have happened while i was trying to tune the carbs, but it never popped that bad that i would think it would twist it, who knows. well i guess now might be a good time to look for a oversize piston kit, lol. so much for my gas saver, wonder how long i can keep this from the wife.:unsure:

81 kz1000 ltd
72 cb750 chop
Last edit: 26 May 2008 13:45 by sully73.

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26 May 2008 12:03 #215968 by Makarth
Replied by Makarth on topic I think im going to be sick
i think the current record is 3 days... :silly:


1977 kz1000 - Megasquirt project @ 40% wiring, plenum, and exhaust<--(done!)

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26 May 2008 12:06 #215969 by PLUMMEN
Replied by PLUMMEN on topic I think im going to be sick
been hiding things for years ,no sweat!:laugh:

Still recovering,some days are better than others.

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26 May 2008 12:44 #215976 by Sandy
Replied by Sandy on topic I think im going to be sick
Just steal the money from her and blame it on the kids(if you have any) and she won't know what you spent.:huh:

Seriously though...sorry to hear that.Shitty buzz!:(

1977 KZ1000 A-1

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26 May 2008 13:26 - 26 May 2008 13:29 #215981 by sully73
Replied by sully73 on topic I think im going to be sick
too late, she came out to the garage and wondered why the engine was out of the "new bike", she didnt believe that i was changing the oil. looking at the crank, the journals on 2,3 come straight up at the same time, 1,and 4 are alittle off, definately thinking twisted crank. anyone got a good one laying around? will this one work?
cgi.ebay.com/ebaymotors/Parts-Accessorie...sh=item170221345143&

81 kz1000 ltd
72 cb750 chop
Last edit: 26 May 2008 13:29 by sully73.

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26 May 2008 13:33 #215983 by steell
Replied by steell on topic I think im going to be sick
You could remove the crank and send it off to have it trued and welded, then it would not twist again :)

Falicon comes to mind, but APE probably does it along with a dozen more.

KD9JUR

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26 May 2008 13:49 #215987 by sully73
Replied by sully73 on topic I think im going to be sick
what kind of chunk of change do you think it would cost me, im kind of on a liited budget with this thing now after buying it. ive got a guy here in town that does cranks for a ton of racers, even guys down south. im sure hed be able to do it, ill have to swing in tomm. looking on the bright side, ill get to paint the cases now. looking at the manual, it has me pulling a ton of crap off, other that the case bolts, what has to come off to swap out a crank? the covers im sure cuz they connect the two cases, but can some of the stuff stay just to do the crank?

81 kz1000 ltd
72 cb750 chop

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26 May 2008 14:29 #215991 by sully73
Replied by sully73 on topic I think im going to be sick
one mor ething i just thought of, i know the crnks on the 1000 is a two piecr that gets pressed together, im wondering about the twisting , if the #1 is twisted alittle bit, w2ouldnt the 2, 3 be off too. the 2 and 3 pistons hit tdc at same time. 1,4 are off by about a 1/4 inch, but im thinking if it twisted, shouldnt 2 and 3 be off as well?

81 kz1000 ltd
72 cb750 chop

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