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Offline bwaller

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rod length
« on: December 04, 2017, 07:28:36 PM »
Looking for CB650 rod length, anyone? 115mm thanks scunny...case closed.
« Last Edit: December 05, 2017, 04:07:36 AM by bwaller »
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Offline turboguzzi

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Re: rod length
« Reply #1 on: December 05, 2017, 12:48:46 PM »
while we are at it, the length of 500/500s? mine are already back in the engine :)
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Offline bwaller

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Re: rod length
« Reply #2 on: December 05, 2017, 05:54:47 PM »
106.9mm
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Offline RAFster122s

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Re: rod length
« Reply #3 on: December 05, 2017, 09:38:56 PM »
That would make quite the stroke in a cb550.  Are the cylinders of the 650 taller too?
They would give you some room to play if you made your own head.
Are you building a bike for the street or the track?
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David- back in the desert SW!

Offline turboguzzi

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Re: rod length
« Reply #4 on: December 06, 2017, 04:34:23 AM »
ok, tnxs brent

just in case it helps you with your planning, GSXR1000 rods (35mm bearing, 15mm pin) are 111 or 112, two models available.
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Offline bwaller

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Re: rod length
« Reply #5 on: December 06, 2017, 04:37:25 AM »
Good info, I'd forgotten about that rod. Thx TG.

Where can I zero in on this info, as in model year?
« Last Edit: December 06, 2017, 04:42:48 AM by bwaller »
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Offline turboguzzi

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Re: rod length
« Reply #6 on: December 06, 2017, 02:39:06 PM »
Suzuki GSXR1000 09-16
Stock rod length is 112mm

Suzuki GSXR1000 05-08
Stock rod length is 111mm

who knows, might let you use one of those pitbike pistons that have really low compression heights

« Last Edit: December 06, 2017, 02:41:20 PM by turboguzzi »
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Offline bwaller

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Re: rod length
« Reply #7 on: December 06, 2017, 04:55:48 PM »
Both those mentioned use a 15mm pin?

Ending up with a rod/stroke ratio of 2.2:1 is aok. Maybe an alloy base spacer.
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Offline turboguzzi

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Re: rod length
« Reply #8 on: December 07, 2017, 10:18:41 AM »
yes, both 15
they have bushed small ends so opens options to other size pins
gerrit once wrote that after bush removal one is 17 ID the other 18mm

http://forums.sohc4.net/index.php/topic,63228.msg1102758.html#msg1102758
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