Author Topic: Don't shoot me: YZ80 with aircooled RM80 motor.  (Read 1012 times)

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Offline McPaavola

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Don't shoot me: YZ80 with aircooled RM80 motor.
« on: July 09, 2017, 06:30:53 AM »
This is my newest project which is now almost finished:




It's a 1984 YZ80, seat and rear panels are from '88 model. I bought it as rolling chassis last January. Then I bought Suzuki GT80 motor from Germany which I converted to RM using gearbox, cylinder and head using 78-79 model parts. Pipe is from KTM SX85. Carb is brand new chinese Mikuni VM28 replica. Ignition is from HPI. Frame needed some heavy modification, engine cradle is completely made from scratch. It's quite fun thing to ride. It will get lights later, I have era correct Acerbis Elba front light waiting in the garage.  ;D
"There are two kinds of motorcycles. Yamahas and almost Yamahas"
DT200WR '94 | YZ125K '83 | YZ125L '84 enduro | TZR250 '90 | RD125LC '86

Offline killindini1

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Re: Don't shoot me: YZ80 with aircooled RM80 motor.
« Reply #1 on: July 09, 2017, 07:25:35 AM »
Nice work Mc Pav,
You have tucked the pipe nicely behind the rad shroud.
Do you have chain tension issues with the swingarm pivot point so far away from the front sprocket?
Don't forget the lower engine mount bolt! ;)
Cheers,
Steve.
Beer is more than just a breakfast drink

Offline 4V5

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Re: Don't shoot me: YZ80 with aircooled RM80 motor.
« Reply #2 on: July 09, 2017, 01:19:53 PM »
nice work!!

I've shoehorn'd a fruity DT175 engine into one of these YZ's.. silly fun.

IT465x4 IT400C IT175F YZ465G YZ250C YZ250WR XJ650G RD350LC RD250LCx5 DT175Nx3 TW200x2 DT200L DT200R RT3 RX100G GT80F YZ80L PW50J KH250B1 KZ250D1 PE175C TS250ER TS185ER AG175B AG100

Offline rosey250

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Re: Don't shoot me: YZ80 with aircooled RM80 motor.
« Reply #3 on: July 09, 2017, 02:29:13 PM »

 ' .......fruity ......' - interesting description !
Do I dare ask what needs to be done to a DT175 engine to make it 'fruity' ?😜
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Offline 4V5

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Re: Don't shoot me: YZ80 with aircooled RM80 motor.
« Reply #4 on: July 09, 2017, 05:03:12 PM »
this:

IT465x4 IT400C IT175F YZ465G YZ250C YZ250WR XJ650G RD350LC RD250LCx5 DT175Nx3 TW200x2 DT200L DT200R RT3 RX100G GT80F YZ80L PW50J KH250B1 KZ250D1 PE175C TS250ER TS185ER AG175B AG100