Harv's Repco HighPower crossflow head thread

[Harv]

Checked in on the progress going on for the head. Head and roller rockers now in the same location.

Water jacket plugs out of the top – glad they could get them out, as I couldn’t even with a cheater bar. Solid (not allan-head) plugs being sought to allow the extra rocker shaft support to be added (as luck would have it, the additional support is right on top of the plug rather than an open area of the head).

My Crow retainers are not going to cut the mustard – their shape precludes the roller tip getting contact, so new bespoke retainers are needed. Bit of a shame I spent so much effort trying to work out an off-the-shelf spring/collet/retainer set, but I did learn a lot as I went along.

Patience, grasshopper.

Cheers,
Harv

[Harv]

Head measured - 47cc before surfacing.

Cheers,
Harv

[Errol62]

About 8.5:1 assuming 0.060” overbore, zero deck height, flat tops and 0.050” gasket.


FB ute fixer upper, EK van on rotisserie

[Harv]

A little more squeeze, as the forged slugs have a little lump. About 9.5:1... then some breathing from the Norman

Cheers,
Harv