The distance is a little further than in the pic as I had to hold the phone... Also, the cylinder base will get a 0.010-0.020 gasket and as the cases grow, the cylinders should grow apart.

 

The original cam plate is the lower one. Notice that when the crank twists, the plate shifts around on the case.

 

The camplate got ported a little..
Installed the bearings by the heat the plate, freeze the bearigns, they drop right in.
This plate was messed up from a buddies bike, I milled both sides just enough to clean up the marks and used it..
The bike is getting Woods 9Bs. Don't know if this bike will ever see a dyno (it had a lot in the past) but the 9b show very little loss on HP but a significant increase below peak HP over the SnS 625s.

 

Ignore the actual HP, It's a taken at the crank. Need to adjust it down about 20-25%.

 

I thinned the body on the feed side a little.
It's an early fueling pump that have about 40000 miles on it. Rotors look good, body good.
IMO with all the O rings, it's best to assemble on the plate leaving the screws loose about 1/4 turn and get the rotors straightened out with an old pinion shaft. That way less chance of pinching an O ring.
Notice the ring on the back side of the pump, I suspect that is from oil blasting through the right main bearing..

 

Realy nice detailed build..
the heat freeze method works really well

 

Inner cam gears were snug. The outers had about 0.0023" clearance. Oversized took care of the slop and knocked it down to 0.0005"

 

I have some very low mileage lifters that I plan to use. I had an old set of 99B with travel limiters. The dirty with dirty oil had the limiter.

 

Checking piston to valve clearance,

 

Outstanding job Max, as always. I enjoy the thread and the work.