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air cooled rd350 in banshee


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The most beautiful thing about Yamaha is once Yammy finds a nice design they continuously build off and refine it.

With that said the banshee motor is built off so many other 350cc motors it's ridiculous. Impress your 4 stroke lovin streetbike riders by telling them the R1 used to be 350cc's and a 2 stroke from the 60's.

Edited by Paulie B
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The RD came first, it was air cooled and did not have power valves. The RZ came next, and it was liquid cooled and had powervalves. Then they came out with the Banshee and it did not have powervalves but it is liquid cooled. In some countries the RZ was sold as a RD350LC, but it still had powervalve and was liquid cooled. Now, Banshee cases are the same casting as RZ cases, they just did not machine the tach drive hole or the pad for the Autolube pump. You can bolt RZ cylinders on a Banshee and the head should go either way. Very little if anything from an aircooled RD will fit on a Banshee. When they modified the liquidcooled RZ to use it in the Banshee, they did away with the powervalves to increase the size of the water jacket for botter cooling. This also neccisitated that they go to a close ratio transmission so it did not fall off the powerband when shifted.

you can't swap heads. the banshee cylinders actually has smaller water jacket profile, but the lack of pv to take displacement, and the head about 1/3 the coolant passage. the mating surface has larger coolant passages, and that is why you cannot swap heads. the 350lc should be that same rz basic head design, which is why it looks different. the correct phrase here is that "top-ends" will swap.

RD350LC = "Elsie" is a liquid cooled but no YPVS.

 

RD350 LCII 31K and up is RZ350 (USA) RD350 (Europe) with YPVS.

 

I had 1983 RD350 YPVS 31K but lost it last year.... damn I want it back.

there we go.

 

just do an rz swap, unless you are going to run it at road-speeds almost all the time. then you can tell people it's "limited edition"

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