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PostPosted: Sat Jul 08, 2017 12:55 pm 

Joined: Tue Jul 24, 2012 6:06 pm
Posts: 830
Location: Honolulu
The crank on this bike has slotted rods. It was rebuilt before I bought it, around 2012. I have pictures of the rebuilt motor and called the builder to confirm before I bought the bike.

The rods are slotted but apparently the inner crank seals are shot because they won't pass the pressure test. If I plug all three cylinders the crankcase will hold 6 psi. Individually, no each cylinder will not hold 6 psi.

So, Charlie I guess I can hookup the oil pump now, but then maybe I should put that freshly rebuilt crank in this engine.


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PostPosted: Sat Jul 08, 2017 1:04 pm 
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Joined: Tue Jun 07, 2011 6:37 am
Posts: 9836
Location: Rio Rancho, New Mexico
Does it have a lab seals? they do leak and you have to do all 3 at a time.

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PostPosted: Sat Jul 08, 2017 9:00 pm 

Joined: Sat Oct 04, 2014 3:45 am
Posts: 665
Location: Cen Tex
Jim wrote:
DGA wrote:
Plus the other half of the oil gets injected into the carb mount.


Well, the intake tract or the carb bowl, depending on the year. I was thinking the same thing, but don't have any experience in this area.



Would my '74 H2 have this?

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PostPosted: Sat Jul 08, 2017 9:05 pm 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 8054
Location: North Central NC
A '74 should have three lines to the three float bowls and a single line that splits into three that go to the block banjos and on to the crank bearings. Also a 4-output oil pump. Earlier H2s have a 3-output pump and three separate lines to the three block banjos, and then the oil splits to the three intake runners and the three crank passages.

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PostPosted: Sun Jul 09, 2017 5:20 pm 

Joined: Tue Jul 24, 2012 6:06 pm
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Location: Honolulu
Moo: The crank has rubber seals.

Jim: I recently installed TM34 carbs on it. I think I'd rather adapt the bike to the three-line pump instead of running the H2B/C pump and lines. Another project...


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PostPosted: Sun Jul 09, 2017 5:40 pm 
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Joined: Wed Jun 08, 2011 11:34 pm
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Location: North Central NC
It's probably easier to put fittings on the bowls, but you can modify the cylinders to go to the 3-output pump.

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If it surges, that's normal, upshift.


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PostPosted: Sun Jul 09, 2017 6:58 pm 
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Joined: Wed Jun 08, 2011 10:23 pm
Posts: 3502
Location: Colorado Springs, CO. USA
Jim wrote:
It's probably easier to put fittings on the bowls, but you can modify the cylinders to go to the 3-output pump.


Modify the cyls but the late and early pumps are all semi hard to find in good shape. But Jeff (JRD) can help with helicoil them to new....

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PostPosted: Mon Jul 10, 2017 8:30 am 
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Joined: Tue Jun 07, 2011 6:37 am
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Location: Rio Rancho, New Mexico
Hawaii-Mike wrote:
Moo: The crank has rubber seals.

Jim: I recently installed TM34 carbs on it. I think I'd rather adapt the bike to the three-line pump instead of running the H2B/C pump and lines. Another project...



Then i t looks like a crank refurbish is in order..... :thumbup:

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I can teach your triple how to "reed"........
http://kawatriple.com/aylor


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PostPosted: Mon Jul 10, 2017 8:52 am 

Joined: Sat Oct 04, 2014 3:45 am
Posts: 665
Location: Cen Tex
Jim wrote:
A '74 should have three lines to the three float bowls and a single line that splits into three that go to the block banjos and on to the crank bearings. Also a 4-output oil pump.


Just checked my basket case and mine does have this.

Thanks for the info, Jim.

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PostPosted: Tue Jul 11, 2017 8:54 pm 
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Joined: Wed Jun 08, 2011 10:10 pm
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Location: Heber Springs, Arkansas
:lol: [quote="Jim"]
:lol:

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