83-84 GPZ 1100 cams

How do I tell the intake from the exhaust cam?
One has r1 stamped on and the other has r6. Does it even mater?
Thanks

Anybody..come on guys...help me:)

Check to see if they are identical. If one has more lift than it is the intake. If they are the same than "it just dont matter".

Cool thanks Otto

The exhaust cam should have a section on it that the tach drive gear is ground in but it's smooth with no teeth.

Mark

My pleasure. I mix and match cams all the time. I always like a setup that has lest exhaust than intake. This will sacrifice a bit of your top end but will give you more lower and mid range torque. On my bike that i built I have two different cams of two different manufacturers. The intake is a .420 lift of 270* @.050 duration and the exhaust is a .410 lift with a 252* @.050 duration.

Mark Wing wrote:

The exhaust cam should have a section on it that the tach drive gear is ground in but it's smooth with no teeth.

Mark

He is talking about GPz1100 cams and there was no tach drive on those bikes. The tach was taken off of the coil.

otakar wrote:

Mark Wing wrote:

The exhaust cam should have a section on it that the tach drive gear is ground in but it's smooth with no teeth.

Mark

He is talking about GPz1100 cams and there was no tach drive on those bikes. The tach was taken off of the coil.

No I'm talking about 750 cams

I'm pretty sure the tach drive boss is still on the cam, it's jut not cut into a worm gear. In fact, the photo looks like an exhaust cam.

The "tach drive boss" is on moth cam shafts. weather cut or uncut. On the GPz1100 it is not cot on either cam.

Mark Wing wrote:

otakar wrote:

Mark Wing wrote:

The exhaust cam should have a section on it that the tach drive gear is ground in but it's smooth with no teeth.

Mark

He is talking about GPz1100 cams and there was no tach drive on those bikes. The tach was taken off of the coil.

No I'm talking about 750 cams

I would not know about the 650/750 since i do not own one of those.

otakar wrote:

My pleasure. I mix and match cams all the time. I always like a setup that has lest exhaust than intake. This will sacrifice a bit of your top end but will give you more lower and mid range torque. On my bike that i built I have two different cams of two different manufacturers. The intake is a .420 lift of 270* @.050 duration and the exhaust is a .410 lift with a 252* @.050 duration.

Intake cams with that much duration work best with motors that have racing compression and/or big cubic inches.

I've seen an awful lot of bracket bikes go significantly quicker by swapping out long duration intakes for short duration.

Street use, street compression, no big block....less equal better all around performance...

JMO