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10-09-2009 | 11:33 PM

#8858

grizz1

Tech Elite

Joined: Nov 2007

Posts: 2,983

From: Auckland, New Zealand

Quote:

Originally Posted by RETRO RC

if the crankcase is the same as the earlier generations then you should in theory be able to run the GX series carbs with no mods in the earlier gen engines

Just a thought.

the cranks are interchangable as the are just a coated 5.5 and the PSR sets as far as I'm aware are still the same part #.....
But I could be wrong

adrian

Hi Adrian,

As far as I know all parts from the GX Series are retro fittable to the Pro Series motors, with the exception of the new GX carb. Can't tell you why the GX carb is not compatible at this stage, but it does have a different part number to the earlier carbs, and is listed in the GO parts guide as "for GX only".
Looking at the part numbers, the crankcase is the same for Gen 5, Gen 5.5, GX and MG66 models. The GX crankcase takes the same crankcase O ring (OR-004) to seat the carb, so the new carb will fit the earlier models, it's just not compatible for some other reason. Maybe Massive can enlighten us on that one ?

Also, do you remember the offset cooling head on the MG66 motor you looked at last weekend. It's like that on purpose. The cooling head has been offset slightly to create a vortex effect around the back of the head, and give approx 5% more cooling - that's straight from the designer himself

. How sneaky is that

Last edited by grizz1; 10-10-2009 at 02:08 AM.

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