RZ350 full dressed engine weight vs RZ500 engine weight.

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RC45
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RZ350 full dressed engine weight vs RZ500 engine weight.

#1 Post by RC45 » Wed Sep 13, 2017 3:51 am

A question to the RZ350 folks in the room.

Whats the full up weight of the 350 motor?

And I know folks have discussed it before, but any guesses as to the full dressed 500 lumps weight?
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kpke
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Re: RZ350 full dressed engine weight vs RZ500 engine weight.

#2 Post by kpke » Wed Sep 13, 2017 10:50 am

When I shipped my RZ500 engine back east, it was very near the FedEx 150 pound limit. It was complete minus the carburetors and associated fuel lines of course. I believe I had the stator cover removed also. So maybe 140 pounds minus the wood crate.

I have not weighed an RZ350 engine.
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1985 RZ500 (R6 suspension & body work)

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Palomoto
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Re: RZ350 full dressed engine weight vs RZ500 engine weight.

#3 Post by Palomoto » Wed Sep 13, 2017 10:24 pm

One source, gomog.com lists a 350 YPVS as 77 lbs. After hefting my lump around, seems about right.
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1985 Honda XL250R
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1964 Yamaha MJ2T
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silverstrom
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Re: RZ350 full dressed engine weight vs RZ500 engine weight.

#4 Post by silverstrom » Wed Sep 13, 2017 11:43 pm

That seems right. My number is 75 pounds. I've owned many. I've shipped a few. Easy to manage.

The 500 motor weighs a ton and a half. Every time I try to move one I feel 10 years older.

RC45
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Re: RZ350 full dressed engine weight vs RZ500 engine weight.

#5 Post by RC45 » Wed Sep 13, 2017 11:52 pm

Wow - less than half the weight and 90hp+ potential with big bore/stroker setups.

Can't wait to see unusable the 1RK hybrid will be :) - although from what I understand, anything outside drag racing short runs cooling is the big concern for over sized 350 motors.
CBR1000RR SP2 HRC WSBK
TZ500V/OW53 Track bike
YZR500 OW81 Clone
OW69 Daytona 200 Replica - 784cc Monster
NS400 Track Bike
RS250R NF5
TZ250T 2KM
TZ250B 3YL
TZR250 3MA Track Bike
427ci C5 Z07

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Re: RZ350 full dressed engine weight vs RZ500 engine weight.

#6 Post by silverstrom » Thu Sep 14, 2017 12:08 am

RC45 wrote:Wow - less than half the weight and 90hp+ potential with big bore/stroker setups.
That motor would be nowhere near 75 lbs. Far from it.

They run hot stock and more so in even slightly modified form and benefit from the addition of a cooling fan. Highly modified motors as you mention would most likely be running electric water pumps and massive radiators.

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Speed Freak
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Re: RZ350 full dressed engine weight vs RZ500 engine weight.

#7 Post by Speed Freak » Thu Sep 14, 2017 12:05 pm

Maybe I should not say it too loud here... but the RD500 engine is not a sport bike engine in my eyes.
I think you will get the same power out of 250cc if you want (Honda RS250 - 92hp, total bike weight 101kg - ok... this is a production racer).

That`s why I`m not interested in tuning of my RD500 - it`s a nice piece of engineering but nothing more.
My bikes:
RD500 YPVS 1GE
RD350 YPVS 31K 1985
Honda CBR 1000 RR SC57
Yamaha R1 RN04

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