Topic: aluminum rods these any good?

[754]

notching not a problem. some vtwins notch a bite size chunk out of the sleeve when you get up in the large bore sizes, and long arms.... a buddy is running 4.25 pistons in his...

[Terry in Australia]

Oh, OK Frank, good to know. Your mate could use Triumph Rocket III pistons!

[BLUE71TURBO]

The rods in this thread were forged and made in Japan. They were imported by MC Supply in Los Angeles. They had more mass than the SuperRod / Yoshimura alloys.  We sold a lot of them back in the day for motors up to 890cc. Wouldn't waste money on them today, especially with bigger motors.

Im building an 836, planning on sending the crank to you to be lightened and balanced, firm believer in balancing everything possable here.

So do you know what the weight was as compared to a stock rod?

   I measured my MTC aluminum rods and one assembled rod weighs 260 grams ( 9.17 ounces )  not including bearings.  

Here's another post us members had on the aluminum rod subject... http://forums.sohc4.net/index.php?topic=70578.0

[Big Jay]

MTC Rods were very beefy. Probably weighs more than  the rods in this thread.

[a700guy]

Thanks BLUE71TURBO that gives me a "less than this number" at least, not
A bad weight savings.

FWIW there is a set of MTC rods for a sohc 750 on ebay right now too.

[BLUE71TURBO]

 I'll have to keep an eye on that auction, as i'm thinking of selling my MTC rods.  

 I just looked for the MTC rods you were talking about and all i could find is the cheap japanese rods.   

[a700guy]

http://cgi.ebay.com/ebaymotors/MTC-Alumiumn-Rods-Honda-CB750-K-F-69-78-CB-750-CR-750-_W0QQcmdZViewItemQQhashZitem35ac0c02d0QQitemZ230519734992QQptZMotorcyclesQ5fPartsQ5fAccessories

one day left

[Jerry Rxman Griffin aka MuthaF'er]

Is it just me (probably) or do those look like Yoshimura Super Rods?

[BLUE71TURBO]

http://cgi.ebay.com/ebaymotors/MTC-Alumiumn-Rods-Honda-CB750-K-F-69-78-CB-750-CR-750-_W0QQcmdZViewItemQQhashZitem35ac0c02d0QQitemZ230519734992QQptZMotorcyclesQ5fPartsQ5fAccessories

one day left

  That's weird, I typed in mtc aluminum rods on ebay and nothing came up.  I then typed mtc rods and the add popped up. Strange.

[a700guy]

he misspelled aluminum

[Retro Rocket]

he misspelled aluminum

Depends where you are , Aluminium is what we call it in Australia and most of the rest of the world.

Mick

[Big Jay]

http://cgi.ebay.com/ebaymotors/MTC-Alumiumn-Rods-Honda-CB750-K-F-69-78-CB-750-CR-750-_W0QQcmdZViewItemQQhashZitem35ac0c02d0QQitemZ230519734992QQptZMotorcyclesQ5fPartsQ5fAccessories

one day left

Those are MTCs.

[Retro Rocket]

MTC Alumiumn Rods

Now thats some agricultural spelling....

Mick

[BLUE71TURBO]

 Two way's to spell it ..........http://en.wikipedia.org/wiki/Aluminium      

[Sam Green Racing]

Yes, the right way and your way.

Sam.

[Terry in Australia]

Don't be too worried guys, just because Brit's invented the language, not all that many of them can actually speak, or spell, "English", either.

[a700guy]

It's not spelled either way MTC Alumiumn Rods Honda CB750 K F A 69-78 CB 750 CR 750

[Sam Green Racing]

Perhaps the seller is dsyeltcic.

Sam.

[754]

Yeah, and there really is a Dog..

 glaed Ihm nawt slysdexic................................



 A forum member Fishhead, has run a few sets of them MC Supply aluminum rods, and they seem to work on some motors.

[a700guy]

So I saw two main concerns for aluminum rods, corrosion and stretching.

If one isn't screaming an engine to 11000+ rpm stretching shoudn't be an issue, but I cannot figure out what the other concern for aluminium in street use is, does anyone know?

[754]

I ran a cammed motor to 10 or 11K pretty well everyday, with stock rods.
 Not sure what RPM you plan on.. the only way I can see it being lower is with a mild cam.
 One of the problems with (forged)aluminum rods, once they are used, they are iffy.. no way of telling how much life is left.. unless the hrs are documented.

 New ones, better scenario. As far as I know the Superrods (Yoshi) and MTC are not the same..

[fishhead]

 A forum member Fishhead, has run a few sets of them MC Supply aluminum rods, and they seem to work on some motors.

 I've used the MC supply rods on a couple motors(836cc's, mild cams) and I have another set that I will end up putting on my bike when I install my 900cc kit.

 I haven't had any problem with the MC rods and I would (and I am going to) use them again.

[voxonda]

Back in the 70's we raced with the Yoshi rods for 3 seasons and after the bike changed hands, at least another season of all out racing and no problem. Class limited to .5 m/m overbore = 748cc. With lightened crank, and Daytona cam it revved like a maniac and stayed in one piece. Really hope to find these Yoshi rods.

Rob

[Sam Green Racing]

So I saw two main concerns for aluminum rods, corrosion and stretching.

If one isn't screaming an engine to 11000+ rpm stretching shoudn't be an issue, but I cannot figure out what the other concern for aluminium in STREET use is, does anyone know?

Let's put this thread to bed. what do you expect from your motor, is it a street or race motor?
You knew the answer to your origional question because you gave the answer in your first post.
Please tell us what you want to know.

Sam.

[Bill/BentON Racing]

Back in the 70's we raced with the Yoshi rods for 3 seasons and after the bike changed hands, at least another season of all out racing and no problem. Class limited to .5 m/m overbore = 748cc. With lightened crank, and Daytona cam it revved like a maniac and stayed in one piece. Really hope to find these Yoshi rods.

Rob,I got a set sitting on midget motor crank.Maybe trade for mounts etc.The motor wasn't run long...looking at head,pistons etc.Rods I don't know.Bill

Should have wiped out wristpin hole! ......deposit on dry clutch?