R16 Engine knock

[Gregs672000]

Tech wiki!

[Greaser2]

Exploded the engine, nothing obvious, wrist pins look fine. Dropped off at machine shop, possibly cylinders out of spec, bad head gasket,.. Pending cleaning and measurements next.

[redroadster]

Did you check the piston to cyl play ?
,take pics of the rod bearings and crank journals , I'd have the rods resized ( best done by a master level )

[Greaser2]

At the machine shop, they will check all the clearances.

[Greaser2]

Does anyone engine specs, Crank/Cylinder/Rod bore/Crankshaft housing bore dimensions, torques for these, Cylinder wall clearance? Or are the answers in the H20/H16(R) engine service manual?

[Bwk2000]

Yup … You can find everything you’re looking for in the ‘Service Manuals’ section of the Tech Wili - Lots of overlap in the various service manuals listed there … just pick one.

Since you have a Low Windshield SPL311, you might also find the downloadable quick reference (full-spec) sheet below useful:

Datsun_Sports_Technical_Data -every number on a 67 1600.pdf

[Greaser2]

What about the Crankshaft housing bore dimensions? I not sure this is even needed but...

[redroadster]

You can tell when the crank bearings are put in & plastic guage the bearing play , usually no probs.
how they doing chasing that knock ?

[Greaser2]

Nothing stood out as the cause of the knock, but had I continued to run it would have exposed itself. It was likely piston slap, clearance with cylinder was too much plus connecting rod bushings were bad.
Cylinders/pistons will go to 0.020 over
Bearings will go to 0.010 over
A PO had just replaced bearings and rings and called it rebuilt. No machining.