TOPIC:

SWest wrote:

There's some J cams and GPZ 1100 cams on eBay now cheap. One ad says they are interchangeable and I wonder if that's true? 

Steve







 

 

All the J and Z1100 / GPZ 1100 twin shock cams are pretty much the same .
It's only the 1000A Unitrack / Z1100R cams that are the higher lift ones.

hardrockminer wrote:

Have you considered installing a gasket as was originally intended? 

Cometic MLS with no RTV sealant, per manufacturer instructions:







 

zed1015 wrote:

SWest wrote:

There's some J cams and GPZ 1100 cams on eBay now cheap. One ad says they are interchangeable and I wonder if that's true? 

Steve







 

 

All the J and Z1100 / GPZ 1100 twin shock cams are pretty much the same .
It's only the 1000A Unitrack / Z1100R cams that are the higher lift ones.


 

     According to my factory service manual.
     The J and the GPz1100 B1 cams are the same, 280*.
     The GPz1100 B2 cams have 288*.


.
 

Nebr_Rex wrote:

zed1015 wrote:

SWest wrote:

There's some J cams and GPZ 1100 cams on eBay now cheap. One ad says they are interchangeable and I wonder if that's true? 

Steve
 

All the J and Z1100 / GPZ 1100 twin shock cams are pretty much the same .
It's only the 1000A Unitrack / Z1100R cams that are the higher lift ones.


 

   
 According to my factory service manual.
     The J and the GPz1100 B1 cams are the same, 280*.
     The GPz1100 B2 cams have 288*.

.

 

And the winner...Wookie58
ZX1100A camshafts 300 degrees of duration!

!

 

SWest wrote:

Wookie58 wrote:

daveo wrote:

Hey Wookie58, Congratulations on your find!Hen's teeth  

Tried to view the cam pictures on the Z1 owners club forum post but wasn't granted access.Please repost them here and we'll gloat  celebrate over them with you.

So I picked these little gems up last night and as a bonus got to meet another member of "our little family" Ian (the buelligan).
Ian is a great guy with an unbelievable toy box that he was good enough to let me see.

First thing as you go in the door was a freash built Z1 turbo motor on a pallet 

  oh and the "short motor" next to it is a 1327 

  then to a pair of turbo early Z's (one under a cover) and Ian's latest build (which will be a future BOTM for sure) a lowered and stretched turbo with nitrous and a "who's who" of top end parts front to rear 

Those look like longer duration cams and I wonder what the lift is.
There's some J cams and GPZ 1100 cams on eBay now cheap.  One ad says they are interchangeable and I wonder if that's true? 

Just scored some Andrews 2X cams for $175 plus shipping.
Seems the guy was playing games with the best offer tab but more of that story in my thread.  We'll see what I get and I was able to nail down the price when I asked him what his bottom price would be. 
He said $175 plus shipping then the games began. 

One call to eBay and this morning I was notified they are being shipped.  Same guy I bought the coils from last week. 

It's a game, I know it, he knows it, we all know it and with a little tact it can work out. 

BTW there were 6 watchers on this item. 

Steve 

 

 

 Amazing Steve...same seller!



Best deal ever!

 The top ring gap .013"   (75mm/2.95" cylinder bore) 

 2.95"  x  .0045" = .013275"  (High-Performance Street/Strip) 


Is this top ring gap ok for a daily rider?

 Delivery next week!

 

 

 

 
 

daveo wrote:

 Delivery next week!

 

 

 

 
 

PURDY 

 

daveo wrote:

 Delivery next week!

 

Looks great. Who is doing the work on your head?

Head work by Schumann Motor Works

www.facebook.com/share/V3i9asDguym9zfoH/?mibextid=WC7FNe

 Late November 2023 













Now what...







 

Are the base circle and the measurable diameter of this 300° duration camshaft lobe both considered to be one and the same? 





Or do the drawn lines show where the true base circle to lobe transition points are?




If so, then the drawing below (posted earlier) is incorrect, and my shim calculations are off!