34 Mukuni carby for 74 CR 125m

[amj 56]

Looking for advice or thoughts on fitting a 34 Mukuni carb to a 74 CR 125m. Interested to know how the performance was affected and what jetting specs were used.
Any advice,help is appreciated, thanks

Allan

[Momus]

Hatrick's can supply them with close jetting. 34 is on the large side for VMX r TVideability. You will need a matching air cleaner boot and manifold.

[amj 56]

Thanks for your help Momus. Back in the day some guys did run the 34 Mukuni's, just wondering if it would give a performance gain over the 30 / 32 Mukuni's that guys are currently running on their CR125m's. Have spoken with Hatrick's who have been very helpful, re jetting.

Allan

[motomaniac]

I had a 34 on my M2 backing the day. The manifold and cylinder inlet port needs to be matched up . The manifolds are still available from mikuni so Hatrick's should have them , the air boot will be a bit harder to find but they are around.

[Momus]

Thanks for your help Momus. Back in the day some guys did run the 34 Mukuni's, just wondering if it would give a performance gain over the 30 / 32 Mukuni's that guys are currently running on their CR125m's. Have spoken with Hatrick's who have been very helpful, re jetting.

Allan

l run a 30  on mine and am happy with its rideability and vastly improved resistance to loading up. It will probably go harder with a 32 or34 at the expense of power range. Fitting tip is to turn the spigot on the carby down and use the std manifgold.

[bigk]

30mm or 32mm is perfect for relatively standard engines. A 16mm spacer between the inlet manifold & cylinder add torque (hard word to use with a 125) & with that mod a readily available RM125A/B air boot is a perfect fit. 34 & 36's are for modified engines in the hands of guys who can use the power at 15,000rpm.
K