TOPIC:

Stock bore and stroke are 72.5 x 66.

r2 x π x stroke x no. of cyl. = c.c./c.i.


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I measured the cam lobes today. 37mm. Are those stock or aftermarket?

Other good news. My buddy and I who has a full service motorcycle shop picked up a Hydro-Hone wet blast machine. It needs some parts so hopefully it will be up and running this month. I'll post some pictures once we blast the heads and other parts. Once it's up I can offer this service to the forum.

It's almost the same machine as this:

Lobe hieght minus base circle diameter equals lobe lift.


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eofa wrote: I measured the cam lobes today. 37mm. Are those stock or aftermarket?

The stock base circle is 1.110". Your 37mm is 1.457", which leaves a lift of 0.347". I believe the stock cams have a lift of around 0.375", so maybe your measurement isn't accurate enough?

Anyway, those are likely the stock cams...

dohc wrote:

eofa wrote: I measured the cam lobes today. 37mm. Are those stock or aftermarket?

The stock base circle is 1.110". Your 37mm is 1.457", which leaves a lift of 0.347". I believe the stock cams have a lift of around 0.375", so maybe you're measurement isn't accurate enough?

Anyway, those are likely the stock cams...

You are correct. It might have J cams in it. I have to wonder why the head is silver. It might be an LTD head. That's not a problem though. If it is, it's an 84 or 85 because it's got the good chambers. Dead give away is weather or not the engine temp sensor boss is drilled and tapped. If it's not....it's LTD for sure.

We got our wet blast machine up and running at the shop. This thing is amazing. No toxic chemicals, no dust and makes quick work of carbon buildup and other junk. Dave did the first go at the valve head. I'll be doing some touch up this weekend.

hey eofa.....nice built
if interested i have a 83-85 gpz1100 single adjustable Koni shock. i bout for my project but is 1" longer and i had welded the pieces for a 12.5" shock.
$125 shipped in the states.

No thanks on the rear shock. I have a ZX6 one I will be running with the 636 swingarm.

eofa wrote: We got our wet blast machine up and running at the shop. This thing is amazing. No toxic chemicals, no dust and makes quick work of carbon buildup and other junk. Dave did the first go at the valve head. I'll be doing some touch up this weekend.

You want to make sure you hose out the oil galleys thoroughly from both directions.

eofa wrote: We got our wet blast machine up and running at the shop. This thing is amazing. No toxic chemicals, no dust and makes quick work of carbon buildup and other junk. Dave did the first go at the valve head. I'll be doing some touch up this weekend.

Im afraid to ask what that new blaster cost.all I can find online is specs,no pricing.

Oh there's pricing out there. Just gotta hunt for it. I'll say this much, at what this was spec'd out at, brand new from the factory, it's was around $15-20k. We did not pay that for sure. You also need an industrial sized compressor to run the proper PSI.

IDK...if those pics are a typical example of what the end result is, I'd say they're a pile of money pissed down the drain. That finish is far from impressive.

This is blasted in a regular cabinet and didn't get finessed because it's going to be painted black....... real bead...not crushed glass and a steady 65 PSI.