some photos as promised ...

And some photos of the R5's ...

They look good, but your intermediate port is small. I guess it doesn't matter though, with a P port. https://www.nopistons.com/forums/pub...IR#>/smile.png



I've got a set of R5 end plates and I think an N intermediate plate. All the ports are average height. Not as tall as '74-'75, but not as short as yours. Also, the outside of the intermediate plate has tall runners, like the US spec FB ('84-'85 for sure).

You're right. The manifold for the PP motor is custom made to block off those four ports. https://www.nopistons.com/forums/pub...DIR#>/wink.png



Peter

I posted a photo in the thread dealing with Peripheral Ports by Heath. Here's another of the new engine being assembled.



What opinions are there re: the placement of the two shims between the water pump housing and the water pump? The FM says to place two shims at points 2 and 4 but my original engine didn't have them, and water leaks weren't a problem.



Peter

One shim on each stud. They're good to use, but I've also seen an engine not leak without them. I got a set of new ones from Banzai for my 20B. https://www.nopistons.com/forums/pub...IR#>/smile.png

The shims are to account for the gasket thickness at all the other mounting points. Not using the shims will cause the waterpump and housing to distort a small amount when you tighten everything up. You have a killer motor, why skimp on two shims?