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I have an R5 motor torn down and want to measure it to see if it's in spec before doing anything else.
I have v blocks, dial indicators, feeler gauges etc but idk what am I looking for?

Okay I see. I would just be embarrassed to send this out to anyone, it's in really rough shape.

What's required to disassemble an RD 350 crank?
I realize there are experts who provide this rebuilding service but I was curious if this was something I could do on my own.
Thanks

Thanks Mark, that's very encouraging. As an aside, do the R5 and RD share the same rake and trail numbers? This R5 I have seems to have a little more rake but it could be the Honda wheels someone put on it. They're aluminum, and if they weigh less than the spoked ones I might try to keep them.

Ah, great. I just took the heads off the R5 and they're stock bores. The RD motor is junk, I don't think the crank is much good and one of the cylinders had a cracked liner going from the intake port out to one of the transfer ports, probably why it was retired but who knows. It looked like it had been kept under a chicken coop.
So I'm going to get a set of the "new" cylinders. I remember using the banshee pistons in my old bike, I assume they should fit right in but I might send them out for a fit check at a local shop first.

So it's been awhile and I just picked up a project, I have a roller RD350 and then I picked up a motor that only has a good transmission. Then a buddy found an R5 that has good compression, but is missing the carbs. For $300 I couldn't say no.
Anyway my goal is to put this thing together and put it on the track so I can race lightweight, formula 4 or maybe it's 3. Anyway.
Someone check me here but I'm pretty sure I can direct swap the gears right into the R5 cases, along with the clutch and shifter. I can also directly bolt up a set of RD cylinders?
Are the cylinders available from that eBay seller any good? I understand I might as well buy three sets in hopes of getting a set with the same porting. On that note, do they come with the same porting that was on the original RD's?
Any advice is greatly appreciated. Thank you.