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TOPIC: KZ 750 twin newbie question

KZ 750 twin newbie question 01 Aug 2020 11:11 #832019

  • eddkz750
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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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KZ 750 twin newbie question 01 Aug 2020 15:26 #832045

  • krazee1
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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 Z1A (disassembled)
1976 KZ900B LTD (SOLD!) it's in GOOD Hands!
1978 KZ1000 LTD
1976 KZ900B LTD pile O parts!
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Last edit: by krazee1.

KZ 750 twin newbie question 02 Aug 2020 12:23 #832110

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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.
-Vic
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'78 kz1000 LTD long term project

'80 kz750G project
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Last edit: by DoctoRot.

KZ 750 twin newbie question 02 Aug 2020 13:09 #832113

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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: by 650ed.

KZ 750 twin newbie question 03 Aug 2020 06:47 #832140

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I tried a brass punch and it still would not budge

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KZ 750 twin newbie question 03 Aug 2020 06:50 #832141

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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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KZ 750 twin newbie question 03 Aug 2020 07:35 #832142

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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?

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Last edit: by martin_csr.

KZ 750 twin newbie question 03 Aug 2020 18:44 #832180

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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 Z1A (disassembled)
1976 KZ900B LTD (SOLD!) it's in GOOD Hands!
1978 KZ1000 LTD
1976 KZ900B LTD pile O parts!

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KZ 750 twin newbie question Today 06:44 #832544

  • usa forever
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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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