KZ 750 twin newbie question

  • eddkz750
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KZ 750 twin newbie question

01 Aug 2020 11:11
#832019
Hi, I am having a LOT of trouble getting the front lower engine mount bolt to break free. I have the nut off, but cannot get the bolt to move. I was going to use a torch to heat up either the frame mounts or the engine itself. this is my question. should I heat the frame or the engine?

Any guidance would be appreciated.

Thanks and glad I found kzrider,com

Ed

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  • krazee1
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Re: KZ 750 twin newbie question

01 Aug 2020 15:26 - 01 Aug 2020 15:27
#832045
Do you have the remaining engine mount fasteners loose? If so you should be able to wiggle the engine a bit and relieve the bind on the bolt you're trying to remove.

Mike
Former M.E. at Kawasaki Motors Manufacturing, Lincoln, NE
1966 W1 (the Z1 of 1966-50H.P. and 100mph!)
1974 Z1
1978 KZ1000 LTD
1976 KZ900B pile O parts
1980 KZ750E
1980 Honda XL250S (I know, wrong flavor!)
Last edit: 01 Aug 2020 15:27 by krazee1.
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  • DoctoRot
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Re: KZ 750 twin newbie question

02 Aug 2020 12:23 - 02 Aug 2020 12:25
#832110
Use a drift to tap it out, if it still won’t ‘budge hit the cases with some heat. Lots of penetrating oil won’t hurt either.
Last edit: 02 Aug 2020 12:25 by DoctoRot.
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  • 650ed
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Re: KZ 750 twin newbie question

02 Aug 2020 13:09 - 02 Aug 2020 13:10
#832113
eddkz750 wrote: Hi, I am having a LOT of trouble getting the front lower engine mount bolt to break free. I have the nut off, but cannot get the bolt to move. I was going to use a torch to heat up either the frame mounts or the engine itself. this is my question. should I heat the frame or the engine?

Any guidance would be appreciated.

Thanks and glad I found kzrider,com


Ed

Soak it with Kroil for a couple days and it should move without too much difficulty. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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Last edit: 02 Aug 2020 13:10 by 650ed.
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Re: KZ 750 twin newbie question

03 Aug 2020 06:47
#832140
I tried a brass punch and it still would not budge

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Re: KZ 750 twin newbie question

03 Aug 2020 06:50
#832141
Thank you all for your replies, I have tried a brass punch (still did not move). I will try removing all other bolts and moving the engine to free it up (one day this week).

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  • martin_csr
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Re: KZ 750 twin newbie question

03 Aug 2020 07:35 - 03 Aug 2020 07:54
#832142
Instead of removing all of the other bolts, maybe try just loosening them.
Is the engine blocked or is its full weight still on the frame?
Last edit: 03 Aug 2020 07:54 by martin_csr.

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Re: KZ 750 twin newbie question

03 Aug 2020 18:44
#832180
martin_csr wrote: Instead of removing all of the other bolts, maybe try just loosening them.
Is the engine blocked or is its full weight still on the frame?

Good thought! ( see first reply)

Mike
Former M.E. at Kawasaki Motors Manufacturing, Lincoln, NE
1966 W1 (the Z1 of 1966-50H.P. and 100mph!)
1974 Z1
1978 KZ1000 LTD
1976 KZ900B pile O parts
1980 KZ750E
1980 Honda XL250S (I know, wrong flavor!)

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  • usa forever
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Re: KZ 750 twin newbie question

10 Aug 2020 06:44
#832544
Seafoam deep creep is an excellent oil to use. I usually let that set for a day or two soak it up again and hit it with a heat gun or a hair dryer we can't do much damage with that and it will create a little wiggle then you can work it back and forth quarter-turn at a time hopefully

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