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'81 750H - lost manifold bolt
- psychbiker
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19 Mar 2007 18:16 #121715
by psychbiker
'81 750H - lost manifold bolt was created by psychbiker
OK, I fear I know the answer to this one ...
I have had an ongoing problem getting the exhaust pipes to properly seat in the manifold. The removable flanges always seem to slide into the retaining collar.
Attempting to readjust the assembly yet another time, one of the bolts which holds the #4 retaining collar to the engine block sheared off.
Am I relegated to having to have the broken bolt bored out of the manifold?
Is there anything I can do as a stopgap to more securely hold the pipe to the manifold so I don't end up with a Harley sounding growling engine?
Post edited by: psychbiker, at: 2007/03/19 21:19
I have had an ongoing problem getting the exhaust pipes to properly seat in the manifold. The removable flanges always seem to slide into the retaining collar.
Attempting to readjust the assembly yet another time, one of the bolts which holds the #4 retaining collar to the engine block sheared off.
Am I relegated to having to have the broken bolt bored out of the manifold?
Is there anything I can do as a stopgap to more securely hold the pipe to the manifold so I don't end up with a Harley sounding growling engine?
Post edited by: psychbiker, at: 2007/03/19 21:19
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- Sandy
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19 Mar 2007 19:26 #121744
by Sandy
1977 KZ1000 A-1
Replied by Sandy on topic '81 750H - lost manifold bolt
Did the bolt snap off flush at the head,or is there anything sticking out past the surface?
Can You post a pic?...
Can You post a pic?...
1977 KZ1000 A-1
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19 Mar 2007 19:27 #121745
by Sandy
1977 KZ1000 A-1
Replied by Sandy on topic '81 750H - lost manifold bolt
Did the bolt snap off flush at the head,or is there anything sticking out past the surface?
Can You post a pic?...
Can You post a pic?...
1977 KZ1000 A-1
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- psychbiker
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20 Mar 2007 01:38 #121825
by psychbiker
Replied by psychbiker on topic '81 750H - lost manifold bolt
It snapped in half ... just about at where the threads begin.
I'll get a pic up later today.
I'll get a pic up later today.
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- AR15Ron
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20 Mar 2007 02:18 #121826
by AR15Ron
Replied by AR15Ron on topic '81 750H - lost manifold bolt
If you have anything to grab onto you might be able to vice-grip it out, heat it up with a torch. If not you can try drilling a hole in it and tapping an easy out in. Not much else I know of...and I've never had a lot of luck with so called easy-outs Hopefully you have enough of it sticking out to grab onto that will be your best bet of avoiding major work.
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20 Mar 2007 05:08 #121849
by wiredgeorge
wiredgeorge Motorcycle Carburetors
Mico TX
www.wgcarbs.com
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Replied by wiredgeorge on topic '81 750H - lost manifold bolt
The vise grips will likely allow you to remove the stud or you can use a stud remover. If these don't work, you can use a Dremmel tool with cut off wheel. Cut a slot in the top of the stud and use a flat screwdriver blade in a hand impact driver.
wiredgeorge Motorcycle Carburetors
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www.wgcarbs.com
Too many bikes to list!
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- psychbiker
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20 Mar 2007 06:14 #121868
by psychbiker
Replied by psychbiker on topic '81 750H - lost manifold bolt
So, am I understanding you all correctly that the bolt is actually threaded on both ends and it will (should) actually just screw out of the manifold?
Even if that is the engineering, I'm going to assume it isn't as simple as just unscrewing it from the manifold?
Part 2 of the question is then, obviously, where do I get a bolt to replace the one I will be (hopefully) removing?
Post edited by: psychbiker, at: 2007/03/20 09:15
Even if that is the engineering, I'm going to assume it isn't as simple as just unscrewing it from the manifold?
Part 2 of the question is then, obviously, where do I get a bolt to replace the one I will be (hopefully) removing?
Post edited by: psychbiker, at: 2007/03/20 09:15
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- Patton
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20 Mar 2007 06:30 #121873
by Patton
1973 Z1
KZ900 LTD
Replied by Patton on topic '81 750H - lost manifold bolt
Z1E carries the exhaust stud
KZ750ExhStud
www.z1enterprises.com/detail.aspx?ID=1558
Exhaust Stud 6x27 Kawasaki
92004-066
Kawasaki (USA)
Kawasaki
OEM: 92004-066
Exhaust Studs 6x27. Fits Kawasaki EX250E1/E2/F2-F12 KL250A1/A1A/A2/A3/A4 KLX250A1/A2 KZ1300A1/A2/A3/A4/B2 KZ200A1/A1A/A2 KZ550A1/A2/A3/A4/C1/C2/C3/C4/D1/F1/F2/H1/H2/M1KZ650B1/B2/B2A/B3/C1/C2/C3/D1/D1A/D2/E1/F1/H1/H2/H3 KZ750E1/E2/E3/F1/H1/H2/H3/H4/L3/N1/N2/R1 ZX550A1/A2/A3 ZX600A1/A2/A3/B1/C1-C10 Genuine Kawasaki Motorcycle part
$2.00
Post edited by: Patton, at: 2007/03/20 09:33
KZ750ExhStud
www.z1enterprises.com/detail.aspx?ID=1558
Exhaust Stud 6x27 Kawasaki
92004-066
Kawasaki (USA)
Kawasaki
OEM: 92004-066
Exhaust Studs 6x27. Fits Kawasaki EX250E1/E2/F2-F12 KL250A1/A1A/A2/A3/A4 KLX250A1/A2 KZ1300A1/A2/A3/A4/B2 KZ200A1/A1A/A2 KZ550A1/A2/A3/A4/C1/C2/C3/C4/D1/F1/F2/H1/H2/M1KZ650B1/B2/B2A/B3/C1/C2/C3/D1/D1A/D2/E1/F1/H1/H2/H3 KZ750E1/E2/E3/F1/H1/H2/H3/H4/L3/N1/N2/R1 ZX550A1/A2/A3 ZX600A1/A2/A3/B1/C1-C10 Genuine Kawasaki Motorcycle part
$2.00
Post edited by: Patton, at: 2007/03/20 09:33
1973 Z1
KZ900 LTD
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- Patton
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20 Mar 2007 06:39 #121877
by Patton
1973 Z1
KZ900 LTD
Replied by Patton on topic '81 750H - lost manifold bolt
Believe this stud is the one with slightly larger cut threads to fit tightly into the head (clamp nut won't screw on the "head" end), so be sure it's installed accordingly.
1973 Z1
KZ900 LTD
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- psychbiker
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20 Mar 2007 08:02 #121899
by psychbiker
Replied by psychbiker on topic Technique question
As always, many thanks for the responses.
I'll order the stud from z1.
But want to maximize the chances of success and hopefully not shear off the remainder of the stud.
Would I need to do anything to prepare before attempting a Vise-grip removal?
Is the stud reverse threaded in the manifold?
(i.e. turn right to loosen, not left?)
Once this is all done, anyone have any suggestions on how to resolve what started this all in the first place -- the pipe-flange-collar combo not seating properly?
Post edited by: psychbiker, at: 2007/03/20 11:03
I'll order the stud from z1.
But want to maximize the chances of success and hopefully not shear off the remainder of the stud.
Would I need to do anything to prepare before attempting a Vise-grip removal?
Is the stud reverse threaded in the manifold?
(i.e. turn right to loosen, not left?)
Once this is all done, anyone have any suggestions on how to resolve what started this all in the first place -- the pipe-flange-collar combo not seating properly?
Post edited by: psychbiker, at: 2007/03/20 11:03
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- AK 81 CSR
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20 Mar 2007 08:24 #121906
by AK 81 CSR
Replied by AK 81 CSR on topic Technique question
When I did mine I made sure that all the remaining clamps on the exhaust system were loose so the exhaust header had some movement when I initially tightened down the collars to the head. As far as the retaining flanges go the manual suggest using some tape to hold the two pieces together during installation. The tape will burn off after use. Another suggestion is to use a rubberband to hold the two halves together and then snip it off after instalation is complete.
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- riverroad
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- 1980 1000LTD B4
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20 Mar 2007 08:28 #121907
by riverroad
Replied by riverroad on topic Technique question
Yep. While you're waiting for your new stud, squirt some good penetrating oil on the old stud. Also helps to tap on the stud with a hammer to set up a vibration in the metal to help draw in the penetrating oil. If you can find it, use Kroil brand. Others swear by PB Blaster (I haven't tried it). Let it work for a day or two. Squirt some more on and tap some more. Don't get impatient with it. Then use whatever afore mentioned method that fits the situation best. The cut slot with an impact driver is best IMO.
When you get it out, be sure to clean out the hole, then put some antisieze on the new stud and screw it in.
When you get it out, be sure to clean out the hole, then put some antisieze on the new stud and screw it in.
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