Topic: Check out what a buddy of mine gave me today....

[MRieck]

 Straight out of Bedrock.

[heffay]

i'm bettin' that's gonna look like new in a jiffy!

[MRieck]

i'm bettin' that's gonna look like new in a jiffy!

I'll run it through the bead blaster hef and detail it a bit. My friend has all sorts of 750 stuff...unfortunately a lot of it has been in his garage and barn. I was looking at a 73mm piston with a Golden Rod today when I picked that barrel up. He has a Dunstall black body set (tank, rear section etc). I'm not interested in it....anybody out there interested? I'll have to take a ride to his house (in NH) and see what he has. He had quite a bit of CB stuff from hillclimbing etc.

[cafebob]

I'd be interested in the Dunstall set...

[Jerry Rxman Griffin aka MuthaF'er]

All I gotta say is you're a real MF'r, you know that don't you?!     Great score! How about if I trade you a set of NOS 73.75mm ~ 10.5 pistons for the head labor?! They've been fitted with 3 piece oil rings too. I can put them in the same box with the head.

Seriously!

[NPHLYT]

Would he have an original Yosh 4-1 in his magic hat?

[andy750]

Very nice Mike! Next time I want to come with you ;-)

Ill need to come over and inspect the RC black for myself 
cheers
Andy

[754]

Do you want to sell it?

[MRieck]

Do you want to sell it?

I'm going to hang on to it Frank. I'l use it with that 1000cc kit Jay is working on. I'll have to resleeve it for that.

[Jerry Rxman Griffin aka MuthaF'er]

Wouldn't it be nice if a simple honing would allow those 73.75mm pistons to fit?! Guess we still need word from Jay, huh!! Thought he told us in late December that he'd have the info right after the 1st. Hope he didn't mean 2010. Now it's next week 2 weeks ago. I'd rather spend it with him rather than pay my tax bill. Anticipation sux 

Nothing like a spare engine. What tha hell, you might as well build a spare bike.


Keep us posted on any more goodies you run across.
 

[moham]

Mike, could you explain for the rest of the class why these cylinders are special? I know the RC makers mark but I (and perhaps others) would like to know in more detail what we're looking at....

[Duke McDukiedook]

Mike, could you explain for the rest of the class why these cylinders are special? I know the RC makers mark but I (and perhaps others) would like to know in more detail what we're looking at....

Yeah teach, what's so special 'bout it?

[754]

Once you get over 1000cc, the sleeves are visible between the fins, they are prone to cracking the cylinder block, distortion, and oil leaking.

So the solution is a stiffer stronger cylinder, without fins though, cooling suffers a bit, but it will stay together and should not leak.

Nice piece if you want big motor, I myself would not sleeve down, unless  sleeves are wore out..

[MRieck]

Once you get over 1000cc, the sleeves are visible between the fins, they are prone to cracking the cylinder block, distortion, and oil leaking.

So the solution is a stiffer stronger cylinder, without fins though, cooling suffers a bit, but it will stay together and should not leak.

Nice piece if you want big motor, I myself would not sleeve down, unless  sleeves are wore out..

Couldn't have stated it better myself. The sleeves in it are bored for 73mm. Jay's pistons will be smaller thus the replacement of the sleeves. I'm very interested in the head gasket he will offer.

[Scooterboy]

I'd be interested in any other goodies you may find that you have no interest in.  Also interested in the Dunstall set.

[andy750]

I'd be interested in any other goodies you may find that you have no interest in.  Also interested in the Dunstall set.

Get in line Scooterboy 

[Jerry Rxman Griffin aka MuthaF'er]

Are you sure? They are NOS. 2.8985 = 73.75mm They'll be on the auction block after I'm done with my projects.