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Crankshaft main bearing caps
- Powerstroke_fan
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14 Sep 2012 21:15 #548724
by Powerstroke_fan
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
Crankshaft main bearing caps was created by Powerstroke_fan
Today i was working on getting the bottom end put together on my new engine build. I dropped the crankshaft in alligned the races with the dowels and made sure its all sitting properly. I Install the main bearing cap making sure its facing the right direction. I snug the bolts by hand then torque them using proper sequence and torque value. I go to verly spin the crank and it wont budge. So i start looking and i noticed that the new H/D timing chain is tight against the plastic slider/guide that is bolted on the main bearing cap. It wasnt doubled over or anything. It is mk11 cases with mk11 crank. Had a 1000 crank in it when i got it. So the question i have is, Are the plastic sliders/guides diffrent on the earlier 1000s compared to the mk11's?
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
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- wireman
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14 Sep 2012 21:37 #548729
by wireman
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
Replied by wireman on topic Crankshaft main bearing caps
You can use a 900/1000/or mkII crank in any 900/1000 cases between 73-80
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
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14 Sep 2012 21:40 - 14 Sep 2012 21:42 #548731
by Powerstroke_fan
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
Replied by Powerstroke_fan on topic Crankshaft main bearing caps
So whats the deal then? The chain is tight against the plastic it even indented the plastic from where i torqued it down. If you get the plastic slider/guide switched from end to end will it cause this?
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
Last edit: 14 Sep 2012 21:42 by Powerstroke_fan.
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14 Sep 2012 21:42 #548732
by wireman
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
Replied by wireman on topic Crankshaft main bearing caps
Can you post a picture of whats hitting?
I dont have any motors sitting here at new house yet that I can look at
I dont have any motors sitting here at new house yet that I can look at
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
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- Powerstroke_fan
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14 Sep 2012 21:49 #548735
by Powerstroke_fan
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
Replied by Powerstroke_fan on topic Crankshaft main bearing caps
Heres the best picture i can get.
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
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14 Sep 2012 21:56 #548736
by wireman
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
Replied by wireman on topic Crankshaft main bearing caps
The mkII crank has an extra tooth on the sprocket compared to the regular crank,I guess I never thought about that causing an issue.
ill check a couple sources to see if part number is differant
ill check a couple sources to see if part number is differant
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
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14 Sep 2012 21:58 #548738
by Powerstroke_fan
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
Replied by Powerstroke_fan on topic Crankshaft main bearing caps
Ya i looked on some sites i could find with oem parts diagrams but none cover the crankshaft or main bearing cap.
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD
2014- ZX14R all stock for now
Please Log in or Create an account to join the conversation.
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14 Sep 2012 22:06 #548743
by wireman
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
Replied by wireman on topic Crankshaft main bearing caps
Same problem im running into on babbits.com
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
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- LarryC
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14 Sep 2012 23:05 #548765
by LarryC
Larry C.
Replied by LarryC on topic Crankshaft main bearing caps
The main bearing cap comes with the cases. You won't find it listed alone.
Toss the plastic guide if it's causing a problem or clearance it....pretty simple.
Toss the plastic guide if it's causing a problem or clearance it....pretty simple.
Larry C.
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14 Sep 2012 23:08 #548767
by wireman
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
Replied by wireman on topic Crankshaft main bearing caps
Larry is there any differance between that guide between the regular kz bottem end and mkII?
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
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15 Sep 2012 04:16 #548791
by APE Jay
Replied by APE Jay on topic Crankshaft main bearing caps
I remember when those came out Manley sold them and it was before the MK11. The center pin and sprocket is larger, so the chain diameter is bigger. I can see why it would hit.
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15 Sep 2012 07:57 #548809
by LarryC
Larry C.
Replied by LarryC on topic Crankshaft main bearing caps
Guys used to have problems getting the chain on the crank sprocket when installing the cams. That's the main purpose for that guide. If you set the bike level, there really is no problem getting the chain securely on the crank sprocket.... I don't run them in my motors.
Larry C.
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