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Sometimes you wonder...

Heads assembled, front one shimmed and on - to get it off the bench.
Pic shows what I've been talking about re the head bolts and the poor access
If Honda had made the lower cam carrier two piece - as they easily could have - it would have been so much easier.
The latest problem to overcome was the shim stack under the carrier - .013in of them - which had to be trimmed to clear the bigger key for the bolts....

I've never done one but I'm told the later RC45 isn't much better. The lower cam bearings are part of the head which means you can't adjust the gear mesh if you cut the head or block...And compression changes have to be done with the pistons.
 

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My bit's finished. Here it is in all it's scratched and scarred patina....You might see some writing on the heads - "Hallam Boyz" and some japanese characters.
We thought initially it may have been one the Hallams ran in the day in Australia, but I've since been told that they did several sets of heads. The japanese characters were translated by a kiwi who works at HRC as "brown eye racing", LOL. So it may have aussie history...
Yes, that's an extra breather outside the alternator...why ? Don't ask me, I wouldn't have done it.

Whether the bike will be completed in time to be sorted before shipping to Philip Island is another question which I can't answer.

Tidying up some loose ends and packing up spares, I thought I'd better test the thermostat before it goes away...The housing is empty. No thermostat - which in a race engine isn't too unusual - although I'm told this one has the extra lower radiator, and an oil cooler...But in addition the bleed hole for the thermostat housing is epoxied shut....I've passed the information on anyway.
 

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Handed it over to a racer who was down from the North Island for a meeting this weekend. He'll take it to the door of the workshop where the frame's sitting.

By a coincidence there was another RC30 at the track too. Not racing, on his way to a classic revival meeting down South. Just stopped at the track to see the bike's regular rider. I know the owner and of course we swapped notes....as you do. His is much better than this one, never blown up for a start, LOL. It's got all the fruit incl Keihin FCR's and late short-port heads. But he says it makes about 124hp at the wheel...I was a tad shocked. The last one I built was a jap home market one which we went through thoroughly. With a locally made tailpipe and an unrestricted ignition box it made 118hp at the wheel....
This guy's race bike is a seriously good RC30, I'd have expected more.
 
Very cool build. Thanks for sharing it with us. Please, keep us posted on it's progress if you can.
 
Spyder said:
Very cool build. Thanks for sharing it with us. Please, keep us posted on it's progress if you can.
Click to expand...

I will. I'm told it's in the frame already. Apparently a "just fit" due to the decked block and the accurate hole drilling in the frame for the top bolts...
They're not the usual 10mm bolts in a 12mm hole....
 
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