Winter mods - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 13 (permalink) Old 06-01-2014, 11:55 AM Thread Starter
Crowley
 
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Winter mods

I'm going to pull the engine this winter to do work on it, and I might as well start getting parts now and hoarding them for winter.

I'm planning on doing the heads completely. All valve work and machine work etc.

Oversize bores 1mm. Can anyone find and possibly link to a +1mm piston and rings? I don't know enough about Pistons to know how they vary and what to look for.

Should I replace connecting rods, crankshaft, cams, or anything else with performance parts?

Looking forward to input


Cylinders - 100
boring - 185
Pistons - 105
Rings - 80
Head gaskets - 45
Base gaskets - 12
Valve seals - 12

500ish right now.

Missing anything?

Last edited by crowley1027; 06-03-2014 at 08:32 AM.
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post #2 of 13 (permalink) Old 06-01-2014, 10:54 PM
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I found and purchased mine here:
http://www.kawasakipartsnation.com/o...inder-piston-s
I only went .50mm and it cleaned up a lot of damage. When you're in there it's a good time to do the balancers and replace the mechanical seals. Might even consider to replace the shifter tie rod which is the reason I tore into mine. Would be up and running had I paid attention to adjustment the first two times I split the case. As far as other parts to replace, piston pins are a maybe if they have any scoring but I reused mine, just replaced the clips and obviously the rings. Base and head gaskets and the right side cover gasket, the rest were siliconed. Not sure where to find special performance parts but someone out there might know. Good luck on the project!

87 vn750at least that is what the frame #'s say
"Squirrel Bike" aka Jersey

Rat bike with a good PR agent

shaved and coastered
2 into 1 exhaust
rear 170 and front 110
Relocated R/R
custom dash with voltmeter
Spitfire windscreen
Plutonium plugs
Recovered seat without "butt hammers"
More to come
Praise to the Parts Goddess Crobins for needed things

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post #3 of 13 (permalink) Old 06-01-2014, 11:07 PM Thread Starter
Crowley
 
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Those Pistons are not 82mm Pistons like I have in my 700. Those are something like 84.6 - that's why I'm having trouble. I see 83mm Pistons, but I don't know what specifications matter.
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post #4 of 13 (permalink) Old 06-02-2014, 03:27 AM
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To make it easier, I have a set of 750 jugs collecting dust I could make a sweet deal on. everything else would be the same save pistons which are collecting dust right next to them. Just an idea.

87 vn750at least that is what the frame #'s say
"Squirrel Bike" aka Jersey

Rat bike with a good PR agent

shaved and coastered
2 into 1 exhaust
rear 170 and front 110
Relocated R/R
custom dash with voltmeter
Spitfire windscreen
Plutonium plugs
Recovered seat without "butt hammers"
More to come
Praise to the Parts Goddess Crobins for needed things

When someone tells me "Great minds think alike" all I can think is "You Pervert"
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post #5 of 13 (permalink) Old 06-02-2014, 06:39 AM
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700 rings are hard to find man. Earlier in the year someone else was asking the exact same question. I surmise that if we can get all the measurements for the rings there might be another vehicle that uses them. Something like a jet ski or snowmobile is what I'm thinking, but until we get those measurements we can't be sure.

When I was working on my cx500 a common thing to do was to get the pistons machined to accept rings from a Toyota Camry because they have the same bore, just thicker rings.

2003 vn750
1988 Pontiac Trans Am (project/driver)
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post #6 of 13 (permalink) Old 06-02-2014, 07:58 AM
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I had had grand plans to take my bike apart over the winter too and then ended up just driving the thing all winter :-)

2014 Kawasaki KLR 650
Back to the Kawa World
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post #7 of 13 (permalink) Old 06-02-2014, 08:51 AM Thread Starter
Crowley
 
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Quote:
Originally Posted by dragon159 View Post
To make it easier, I have a set of 750 jugs collecting dust I could make a sweet deal on. everything else would be the same save pistons which are collecting dust right next to them. Just an idea.
Just to be clear, I can swap my cylinders for yours, get Pistons to match, and everything else will bolt up? Shoot me a price
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post #8 of 13 (permalink) Old 06-02-2014, 10:30 AM
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I would not buy parts ahead of time, especially for a sleeved engine.
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post #9 of 13 (permalink) Old 06-02-2014, 10:53 AM
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Quote:
Originally Posted by wmsonta View Post
I would not buy parts ahead of time, especially for a sleeved engine.
WTF? Why wouldn't you buy parts for a project that you know you are going to need? I always try to have all of my parts on hand before starting a project to minimize down time and make the job go so much smoother. Yes there are unforseen circumstances sometimes but its nice to be prepared.

2003 vn750
1988 Pontiac Trans Am (project/driver)
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post #10 of 13 (permalink) Old 06-02-2014, 12:46 PM
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Changing the jugs is a straight bolt-on being the only difference between the 700 and 750 is bore size. My spare jugs came attached to a 700 lower case and ran for 2 seasons before the base gaskets gave out due to bad rings and a hack shop throwing the whole thing together before I bought it. PM sent.

87 vn750at least that is what the frame #'s say
"Squirrel Bike" aka Jersey

Rat bike with a good PR agent

shaved and coastered
2 into 1 exhaust
rear 170 and front 110
Relocated R/R
custom dash with voltmeter
Spitfire windscreen
Plutonium plugs
Recovered seat without "butt hammers"
More to come
Praise to the Parts Goddess Crobins for needed things

When someone tells me "Great minds think alike" all I can think is "You Pervert"
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