ID this 79cc barrel

[monaro308]

Can anyone recognise this barrel i have sitting in my shed?
The only markings on it are....made in japan and 79cc
I measure it as a 48.7 mm bore
cheers...mario

[lukeb1961]

looks like RM80B from here..
eg compare with eBay 350332381180

[monaro308]

That is so damn close Luke!
The ebay one has "ears" on the exh port which may have been added.
I think you are on the money!
Umm...don't you have an RM80B 
cheers...mario

[BJJ]

before I even scrolled down,  I said to myself RM80.  Luke is never far away on the Suzi stuff...

[lukeb1961]

Must give something away for my insight. I have just completed a ground-up resto of an RM80B for my little boy :-)

[monaro308]

Must give something away for my insight. I have just completed a ground-up resto of an RM80B for my little boy :-)

Luke, "the little boy" never leaves us.
There are 2 YZ80s waiting to be worked on in my shed for me...umm I mean my boy!(i don't have kids)

Thanks!

[DR]

DS80 1978-2000 differences, DS has unbridged exhaust port, fins joined in the casting beside the exhaust,  rubber dampening blocks between the fins and the circular exhaust gasket (ds don't use the separate bolt on exhaust flange like the rm) I do have a DS80 bottom end I must assemble one day courtesy of ty4 (Tony down in Victoria) yell if you're going to ditch it Mario

[monaro308]

You are right Chris (as usual)
The dampening blocks made me think enduro-ish.

OK I"M YELLING CHRIS.....IT'S YOURS!!! 

[BJJ]

This is what attracts me to the forum.  The depth of knowledge (and enthusiasm)

[lukeb1961]

DS80 1978-2000 differences, DS has unbridged exhaust port, fins joined in the casting beside the exhaust,  rubber dampening blocks between the fins and the circular exhaust gasket (ds don't use the separate bolt on exhaust flange like the rm)

I subconsciously knew something wasn't "quite right" but I must have been tired to not even think about the DS80. Definately a face-palm moment!

Chris is an absolute walking RM encyclopaedia !!
Luke

[DR]

many thanks for the compliment Luke but the cut off for my RM knowledge is roughly 1978, never had much to do with anything later than that excepting the 80's

Many many thanks to you as well Mario, let me know the damage on the postage and I'll send down the funds

[monaro308]

Well at least you had "some" idea Luke. I had none!
Luckily Chris lives in Q/Land,otherwise he'd never get any work done if we came around.

I still have your address Chris,i'll send it up during the week.
cheers...mario

[Lozza]

Was simple the mxers have the bride port trail bikes the single exhaust port.