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Author Topic: Does anyone know stock 750 SOHC rod length?  (Read 2939 times)

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Offline cafebob

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Does anyone know stock 750 SOHC rod length?
« on: November 27, 2007, 11:07:47 PM »
I'm running some calculations and could use the rod length, anyone know off hand?

bob
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Offline Soos

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #1 on: November 28, 2007, 12:06:42 AM »
1.5mm longer than the DOHC rods...

I don't honestly know(just in a smarta** mood), but i can check if no one else here knows.
I have a set of rods from a K4 laying around I can measure if need be.

l8r
« Last Edit: March 31, 2009, 06:59:14 AM by Soos »
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Offline cafebob

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #2 on: November 28, 2007, 12:10:31 AM »
my guess is like 4 inches....but that is the best i can do....exact would be nice...
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Offline Soos

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #3 on: November 28, 2007, 04:10:18 AM »
I'll take one to work tomorrow... wait.. later today.
Swingshift and doing 12hr shifts messes with my days...

Unless someone can beat me to the punch.

l8r
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Just think to yourself what would Alowishus Devander Abercrombie do?
"Brix will be shat by your neighbors." - schwebel
(61mm)652cc 1979 cb650

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #4 on: November 28, 2007, 01:15:58 PM »
Bob,

Did you check Axl's site? www.SatanicMechanic.com/.de?. I think he has that info listed.
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline cafebob

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #5 on: November 28, 2007, 02:20:42 PM »
ya i checked....gives relative length to dohc length.... not absolute....ill check again.

bob
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Offline 754

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #6 on: November 28, 2007, 07:34:34 PM »
Are you talking bore centers..???

or...OAL ??
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Offline JLeather

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #7 on: November 29, 2007, 04:45:34 AM »
I'm thinking bore-centers is the most useful measurement.  This is for CR calculations involving stroke and compression distances, so I think he needs bore-centers.
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Offline cafebob

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #8 on: November 29, 2007, 10:11:46 AM »
yeah bore centers....
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Offline Soos

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #9 on: November 29, 2007, 04:11:50 PM »
Sorry about not posting the measurments yet... I keep forgetting the rod at home....

12+ hour days make it hard to rember the little things at times...
I am going home for lunch (I will bring the rod to work), and will measure it after work tonight.
I will post the measurments about 4 or 5 in the morning.


l8r
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Just think to yourself what would Alowishus Devander Abercrombie do?
"Brix will be shat by your neighbors." - schwebel
(61mm)652cc 1979 cb650

Offline cafebob

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #10 on: November 29, 2007, 04:25:11 PM »
thanks...that will do...
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Offline Soos

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #11 on: November 30, 2007, 01:24:53 AM »
it's nice to get off work early for a change...

The mill I was going to use to dial in the bores and give you a exact bore to bore measurement is down...So using some digi calipers, I come up with 4.566 center to center.
In Metric thats 115.976 mm
I'm guessing 116mm is stock.
I did re-measure, and the second time I came up with 4.567.(116.002mm)

While i'm at it.... stock DOHC cb750 connecting rod center to center length I measure is 4.507(114.478mm).
touching lightly I come up with 4.508 (114.503mm)

Hope this helps.


l8r
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-=≡ Soos ≡=-
Just think to yourself what would Alowishus Devander Abercrombie do?
"Brix will be shat by your neighbors." - schwebel
(61mm)652cc 1979 cb650

Offline cafebob

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #12 on: November 30, 2007, 01:31:15 AM »
man you rock....thats accurate enough for me  :P

bob
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Offline Soos

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #13 on: November 30, 2007, 01:44:47 AM »
You must be on the other side of the earth, or a night owl....
it's odd to see others on line when i am.


l8r
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-=≡ Soos ≡=-
Just think to yourself what would Alowishus Devander Abercrombie do?
"Brix will be shat by your neighbors." - schwebel
(61mm)652cc 1979 cb650

Offline cafebob

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #14 on: November 30, 2007, 08:22:07 AM »
im in denver....and medical school  :-\
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #15 on: November 30, 2007, 09:30:25 AM »
9am - must be posting after finishing 4 hour rounds. Surgery I hope.  :)
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Big Jay

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #16 on: November 30, 2007, 04:25:10 PM »
The Center to center distance is 4.570"


Jay
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Offline Soos

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #17 on: November 30, 2007, 06:12:45 PM »
Well I brought them to work today, and checked 2 rods, and came up with 4.5675 and 4.5665.
Possibly the center to center difference is due to the miles on the motor these are from?

Big Jay, you guys there make rods right? I'm assuming thats why have the spec's?


l8r
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-=≡ Soos ≡=-
Just think to yourself what would Alowishus Devander Abercrombie do?
"Brix will be shat by your neighbors." - schwebel
(61mm)652cc 1979 cb650

Offline Big Jay

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Re: Does anyone know stock 750 SOHC rod length?
« Reply #18 on: November 30, 2007, 08:56:37 PM »
My figure came right off of a Carrillo spec sheet that comes with the rods.

Jay
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