OzVMX Forum

Marque Remarks => Suzuki => Topic started by: hessam69 on July 07, 2008, 06:13:54 pm

Title: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: hessam69 on July 07, 2008, 06:13:54 pm

G'day

I have the choice of putting a standard but rejetted vm32 mikuni carb back on my restored 79 rm125 which has had a fair bit of work done to it, 2mm overbore, dg pipe, reeds, ported cylinder, uni filter, would it suit the stock 32mm or would the extra 2mm airflow from the 34 benefit the rest of the modifications thanks

Title: Re: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: Maico31 on July 07, 2008, 06:20:35 pm

They definately go better with a 34mm on them. Used to put a 34 on all my RM125's back in the day.

Title: Re: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: hessam69 on July 07, 2008, 06:25:02 pm

That's the answer I was expecting to see thank you

Title: Re: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: TM BILL on July 07, 2008, 10:21:16 pm

Depends  whats your riding ability

Title: Re: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: TT5 Matt on July 07, 2008, 10:28:09 pm

probaly a pe175 carb would be a good swap with close to spot jetting and easy to obtain at the wreckers

TT5 Matt

Title: Re: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: hessam69 on July 07, 2008, 11:16:25 pm

Wouldn't that be smaller? PE's are enduro, they're better for more bottom end style power

Title: Re: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: TT5 Matt on July 07, 2008, 11:38:58 pm

79 pe175n had 34mm carb and got their bottom end grunt from heavier flywheel,less porting, extra 50cc and different advance curve on the sparks

TT5 Matt

Title: Re: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: hessam69 on July 08, 2008, 12:24:32 am

oh ok I understand.. Do you think I should just get one from the wreckers or buy a new one? After 30 years I reckon the slide and other moving parts would be a little worn or what do you reckon?

Title: Re: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: lukeb1961 on July 08, 2008, 04:03:29 am

you can buy new from Vintage Suzuki. or a T/X PE carb from eBay and a shiny new slide, and new jets, all off eBay. Probably cost about the same.

Title: Re: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: rocketfrog on July 08, 2008, 11:35:28 am

hessam, where did you score your DG pipe for the '79 RM?

Title: Re: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: hessam69 on July 08, 2008, 11:36:34 am

I got it from the states

Title: Re: 32 or 34mm mikuni vm carb for 1979 rm125
Post by: Doc on July 09, 2008, 08:06:44 am

hessam69, you're right, the old carbs do wear out. It's not until you fit a brand new item that it becomes apparrent. The difference is like night and day  ;) if you can afford it buy new