head bolts leaking.

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14 Jan 2008 13:47 #189251 by spectrerob
head bolts leaking. was created by spectrerob
A couple head bolts are leaking. What's the fix? I tried to tighten them down a little, but I was afraid to crack something and I don't think I helped it. Are there gaskets in there?
Thanks for any help.
Rob
Kz1100 Spectre

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14 Jan 2008 14:10 #189256 by FloridaBiker
Replied by FloridaBiker on topic head bolts leaking.
Leaking oil or combustion by-products?
4 of the head bolts have oil running around them to lubricate the top end. They are sealed by copper crush gaskets at the top, and by o-rings where the head fits onto the cylinder.
If it is leaking exhaust gases you may need to replace the head gasket.

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14 Jan 2008 18:03 #189299 by spectrerob
Replied by spectrerob on topic head bolts leaking.
Its leaking oil. so I can just replace the bolt's gaskets?? That would be too easy!

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  • hardr0ck68
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14 Jan 2008 18:44 #189305 by hardr0ck68
Replied by hardr0ck68 on topic head bolts leaking.
You can even reuse the old ones, pull the head bolts then fish the washers out of there. Heat them up red hot with a torch, then drop them in a bucket of water. Then clean off any crud (a wire wheel works well for this) then reinstall them and re torque the head bolts, make sure to use a proper torque wrench and find the proper spec. in your service manual.


Are the crush washers all that seal the oil passages on the top of the head?

1977 kz650 c1

bought it because I was told it would never run again...I like to prove people wrong.

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15 Jan 2008 09:32 #189419 by kzwolfsr
Replied by kzwolfsr on topic head bolts leaking.
Strange. I just reuse mine, no big deal!

1979 KZ SR650, stock candy persimmon red and crossover pipes
1981 KZ 1000LTD with non stock and more comfortable handle bars and 4 into one V&H
Original man of the Caribbean

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19 Jan 2008 08:56 #190077 by spectrerob
Replied by spectrerob on topic head bolts leaking.
to Sears I go to get a torque wrench. I've been looking for excuse to buy one and this bike is a good reason. Everyone tells me to pay attention to the torque nspecs. thanks for your help.

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19 Jan 2008 09:27 #190087 by Patton
Replied by Patton on topic head bolts leaking.
spectrerob wrote:

to Sears I go to get a torque wrench. I've been looking for excuse to buy one and this bike is a good reason. Everyone tells me to pay attention to the torque nspecs. thanks for your help.


Wait, spectrerob! Forget Sears!

The original genuine Black Forest brand torque wrench has no equal, being scientifically calibrated to the precise German Virgin Standard, which in most applications should be set to Guttentite (as opposed to the more commonly recognized method of turn it until it strips, then back off 1/2 turn).

Hope this helps.

1973 Z1
KZ900 LTD

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