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Motor Rebuild Time
- XL777
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2 yrs ago I tested the compression (even 100 lbs which is low for a 1000cc)
adjusted all the valve shims no change
fixed all the exhaust leaks I could find
Using a bore scope I took a camera and look down the spark plug holes and found a lot of black blow by the cylinders. As well my head gasket started to leak on 1/4 cyl.
As I started to pull it apart I have found A LOT of oil in the top end of the motor. Im assuming because of the weak rings and pressure in the motor.
Next step is to pull the head off and see what shape its in along with the pistons. What should I look for as I do this?
How can I know if I have to dig into the bottem end? I'm concerned that If I do the top end the bottom will fall out haha.
Also if I have it apart and Im in there what should I replace other then the rings.
2012 Triumph Bonneville SE black
1978 KZ1000 B2 LTD
Fresh top end rebuild
Rebuilt head
Wiseco 1015 pistons
Dyna s
Green Dyna coils
Wired george mod
It is easier to say what I haven't replaced then what I have.
I must love this cruel mistress since she hates me
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- MFolks
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1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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- bountyhunter
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1979 KZ-750 Twin
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- timebomb33
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1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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- larrycavan
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If it's a freshen up on a stock motor:
Replace Cam chain like Tim suggested.
Inspect cam rollers very carefully and replace as needed.
Bore if reuired or re-ring current pistons.
Valve Job and quite possibly guides.
While cases are split have a look at the transmision gear dogs and shift forks.
Those are the basics.
TIPS to make things easier.
1 - READ THE MANUAL
2 - REPEAT Step 1
Get some cardboard and make bolt templates with it. Draw the case pattern on the cardboard and put a dot where the bolts go. Then poke a hole through the cardboard and place the bolts in the template.
Same thing with engine cover bolts.
Egg cartons make great storage for valve buckets.
Keep things organized, clean all your nuts & bolts or replace them as needed.
Larry C
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- XL777
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What kind of money on parts can I expect to put into this? My limit is about $1000. The bike has 36km
2012 Triumph Bonneville SE black
1978 KZ1000 B2 LTD
Fresh top end rebuild
Rebuilt head
Wiseco 1015 pistons
Dyna s
Green Dyna coils
Wired george mod
It is easier to say what I haven't replaced then what I have.
I must love this cruel mistress since she hates me
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- Galactica
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Check out 9am53's post "A newbies Adventure in Maintenencland". I may not have spelled that right. He rebuilt his 1000 this past winter. Lots of pics and lots of help from members.
Good Luck
77KZ1000
76 KZ900
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- 9am53
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- homebrew, and some bbq
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Please keep us up to date on your build. Post many photos. I am planning to "Freshen" up my kz900 next winter, and will need all the info I can get. The more often I see this stuff done, the better.
Check out 9am53's post "A newbies Adventure in Maintenencland". I may not have spelled that right. He rebuilt his 1000 this past winter. Lots of pics and lots of help from members.
Good Luck
and unfortunately more than $1000 :S
'84 GPz900r
'71 CB350
s289.photobucket.com/albums/ll231/9am53/
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- XL777
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I have about 3K into it now.
What I want is a reliable classic cruiser. I'm not a big fan on the new big fatman 1000+cc cruisers.
2012 Triumph Bonneville SE black
1978 KZ1000 B2 LTD
Fresh top end rebuild
Rebuilt head
Wiseco 1015 pistons
Dyna s
Green Dyna coils
Wired george mod
It is easier to say what I haven't replaced then what I have.
I must love this cruel mistress since she hates me
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- 9am53
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- homebrew, and some bbq
- Posts: 1802
- Thank you received: 3
'84 GPz900r
'71 CB350
s289.photobucket.com/albums/ll231/9am53/
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- XL777
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2012 Triumph Bonneville SE black
1978 KZ1000 B2 LTD
Fresh top end rebuild
Rebuilt head
Wiseco 1015 pistons
Dyna s
Green Dyna coils
Wired george mod
It is easier to say what I haven't replaced then what I have.
I must love this cruel mistress since she hates me
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- bountyhunter
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How much more? I can pick up a redone kz for a few K and part mine out.
I have about 3K into it now.
What I want is a reliable classic cruiser. I'm not a big fan on the new big fatman 1000+cc cruisers.
I think you could do a freshen up of new rings, cylinder hone, valves redone (head overhaul by machine shop), new top gaskets for under $600 (ball park?) if you do the assembly labor.
1979 KZ-750 Twin
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