Aftermarket Cams?

[srsupertrap]

And even more fun...

Three of the four pistons had missing aluminum pin buttons on one side. Pin walked out so cylinder walls are deeply scored. Pistons measure 73mm. Anyone know what brand?

I will leave the piston identification to Rapid Ray since just about everyone offered a 73mm big bore kit including RC Engineering. The Wiseco 1085 Kit I purchased long ago did not have aluminum pin buttons, the piston pins are secured with those same spring steel circular circlips which are suppose to be used only once.

[chef1366]

Nessism, they look like the new set of R.C. Eng. cams that i bought a couple years ago for a long gone project.
Mine are very lumpy. Exhaust .460, Int .520.

Weeds on DVD huh.

I see

I have them all too.

[steve murdoch]

Sounds like "great minds think alike", Chef.
Fun stuff and easy on the eyes.

[steve murdoch]

I have no idea of the value, Nessism.
I paid $100.00 for mine on E-Bay a couple years ago. I hope the seller did not pay the price on the box. Ouch!

[Nessism]

More carnage...

Valve springs broke apart and gouged up the head. Also, piston pin button cocked sideways and tore up the circlip groove on one piston.

I'm afraid to take apart the bottom end.

[Big T]

I was wondering - doesn't the lift on those cams exceed the recommended amount of lift for shim over bucket ?

[chef1366]

I do believe the cams were a little much for those springs.

[doctorgonzo]

Jesus Christ Ed, somebody tore the hell out of that bike.

[Nessism]

Jesus Christ Ed, somebody tore the hell out of that bike.

True that!

Basically the entire upper end is junk other than the valve cover and cams.

Regarding the cam being too much for the shims, not sure. The lobes clear the valve guides so other than a little clearancing around the valve bucket the cam will fit. If anyone wants these cams shoot me an offer via PM. They are not going to do me any good at this point.

To repair the engine I'm thinking about buying a 1000G engine for parts. Does anyone know if the G engine parts are interchangeable with the 1000S upper end?

Ed

[hampshirehog]

True that!

To repair the engine I'm thinking about buying a 1000G engine for parts. Does anyone know if the G engine parts are interchangeable with the 1000S upper end?

Ed

The G bits will fit straight on, though don't forget that the G heads only came designed for the CV carbs. All the G models came with the extra front cam tunnel bolt as well - not critical if your head doesn't match (some S models had it, some didn't).

[srsupertrap]

My input on cams wasn't too helpful but if you are interested I do have the original stock ART pistons, cams which I removed @ 7000 miles. They have been stored inside every since.

[doctorgonzo]

I have an extra set of stock Cams for an 81 1000G myself. The head I bought for my swap came with the Cams plus I have the Cams from my old head. I need to measure them and check spec. I'll do that tonight.

Speaking of torn up motors, I dodged a bullet. The junkyard head I bought to replace mine had a hose clamp that had probably fallen down a spark plug hole. It was lodged between the valve and the seat stopping the valve from closing, but that's as far as it fell. I found it when I tore the head down. It didn't get past the valve and into the bottom of the engine. I'm guessing that was the cause of the bike winding up in the yard.

[Nessism]

Thanks for all the parts offers. You guys are the silver lining in this thunderstorm of engine carnage. Have to spend a little more time on ebay looking at engines/cylinders/heads then I’ll be in touch with some of you to help fill in the voids so to speak.

Merry Christmas.

Ed

[salty_monk]

Yeah buy a 1000G, I could do with a parts stash

Bottom end is different obviously but you knew that

I think a friend of Rapid Rays had a G engine up for sale, not sure if it's still available. This is a quote from him.

"Gary at "The Frame Shop" in Stanton, CA 714 893 6700 had a good GS1000G motor for sale."

There's also an engine I've seen come up on CL in Orange County a couple of times for a couple hundred bucks.

[Nessism]

Yeah buy a 1000G, I could do with a parts stash

Bottom end is different obviously but you knew that

I think a friend of Rapid Rays had a G engine up for sale, not sure if it's still available. This is a quote from him.

"Gary at "The Frame Shop" in Stanton, CA 714 893 6700 had a good GS1000G motor for sale."

There's also an engine I've seen come up on CL in Orange County a couple of times for a couple hundred bucks.

Hey Dan,

That engine must be the same one as on CL - from Stanton. http://orangecounty.craigslist.org/mcy/964199373.html Guy has been listing it over and over again for more than a year I think - he wants $400 in his ad. Not sure it's worth that much unless it can be certified as low mileage. Going to give him a call.

Edit: guy said he will come down to $350 but not lower. Seems a little high to me but what do you guys think? He claims the mileage is in the teens but there is no way to varify.