Author Topic: Rossi Mk3 Parts (Read 1599 times)

Les Akre · « **on:** February 04, 2013, 01:13:58 AM »

Does anyone have a brand new rear bearing for a Rossi 15 mk3 (blackhead) engine?

They are a proprietary size and not available from commercial bearing houses.

Regards, Les

Reptoid · « **Reply #1 on:** February 04, 2013, 12:43:41 PM »

Maybe my memory is going

but I thought it was the MKII that had the oddball bearing and the MKIII used a 6901??

Les Akre · « **Reply #2 on:** February 04, 2013, 02:39:50 PM »

Guy's

I was going off what Gillott told me...that the Mk3 had the oddball outer race size. However, his memory may be fading as well??

At any rate, I'll remove it and measure it up, and post the actual size.

Les

bill bischoff · « **Reply #3 on:** February 04, 2013, 04:38:41 PM »

According to my Boca guide, it's a 12x24x6, which would be some variant of a 6901. (BTW, it specifically says "black head 15)

Les Akre · « **Reply #4 on:** February 05, 2013, 01:01:59 AM »

Ok, got it figured out. Timmy thought I was referring to his 12mm conversions of the Mk2 engine. He confirmed what several of you guy's have already posted, that the mk3 uses the 12x24x6 which I can get locally. Thanks to all of you for the help.

BTW, I had completely forgotten about the Boca model engine bearing listings, I'll have to bookmark that for future reference.

Les

Reptoid · « **Reply #5 on:** February 05, 2013, 06:16:24 PM »

Les;
Boca has 15% off right now + free shipping, coupon code=15springrc
MR6901 TH9/3C or MR 6901 THB/3C (Plastic retainer or Phenolic retainer) are $17.95ea, before the discount. I have used both in racing engines and never had a failure.

Les Akre · « **Reply #6 on:** February 05, 2013, 08:48:06 PM »

Thanks Don, I'll check it out.

Les

Author Topic: Rossi Mk3 Parts (Read 1599 times)

Les Akre

Rossi Mk3 Parts

Reptoid

Re: Rossi Mk3 Parts

Les Akre

Re: Rossi Mk3 Parts

bill bischoff

Re: Rossi Mk3 Parts

Les Akre

Re: Rossi Mk3 Parts

Reptoid

Re: Rossi Mk3 Parts

Les Akre

Re: Rossi Mk3 Parts