Topic: rod length

[bwaller]

Looking for CB650 rod length, anyone? 115mm thanks scunny...case closed.

[turboguzzi]

while we are at it, the length of 500/500s? mine are already back in the engine

[bwaller]

106.9mm

[RAFster122s]

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?

[turboguzzi]

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.

[bwaller]

Good info, I'd forgotten about that rod. Thx TG.

Where can I zero in on this info, as in model year?

[turboguzzi]

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

[bwaller]

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.

[turboguzzi]

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

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