YSR50 build

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expat
Posts: 451
Joined: Thu Sep 16, 2010 12:26 am
Location: Massachusetts

Re: YSR50 build

Post by expat »

It arrived! Needs a bit of cleaning up and a new Ohlins decal but I am happy!!

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85 RZ350
88 YSR50
82 RD350LC (Current project)
06 Triumph Daytona 675 (track toy)
97 Honda RS125 (race bike #1)
99 Aprilia RS250 (race bike #2)
89 RGV250 VJ21
85 RG500
85 RZ350 Hybrid
86 GSXR750
nzminis
Posts: 281
Joined: Sun Jul 14, 2013 12:47 am
Location: New Zealand

Re: YSR50 build

Post by nzminis »

coming along nicely

love seeing other small projects come up on here just changes it up

one came up on a local auction site with 4,800 kms and he wants $5k ,usa speck bike .im not sure he will get that for it , wonder if it would be worth getting some from japan just not sure the demand is there
expat
Posts: 451
Joined: Thu Sep 16, 2010 12:26 am
Location: Massachusetts

Re: YSR50 build

Post by expat »

I haven't had much spare time recently due to work travel but here are a few pics of the progress (very slow!) I have just got the wheels and hubs back from paint, the parts I had re-chromed are winging their way back from England and I am about 60% finished on the stainless axles, engine mounting bolts, and a few other parts and the Ohlins shock has gone to GMD Computrack for a rebuild so in a couple of weeks when I get a couple of days to work on it, I should see some decent progress! It will be curtailed as I have to get the Honda RS125 and an Aprilia RS250 ready for track season!!
On with the photos!

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85 RZ350
88 YSR50
82 RD350LC (Current project)
06 Triumph Daytona 675 (track toy)
97 Honda RS125 (race bike #1)
99 Aprilia RS250 (race bike #2)
89 RGV250 VJ21
85 RG500
85 RZ350 Hybrid
86 GSXR750
User avatar
L.B
Posts: 2008
Joined: Sat Aug 13, 2011 9:59 am
Location: Hunter Valley,Australia
Contact:

Re: YSR50 build

Post by L.B »

Prime candidate for a RZ350,or RZ125 engine transplant at least ;-)
haka_pt
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Posts: 70
Joined: Tue Jul 16, 2013 10:15 am

Re: YSR50 build

Post by haka_pt »

The Yamaha Blaster engine is an easy drop in...:)
Yamaha RD421
Yamaha TZR250
Yamaha TDR250
Yamaha YSR50
Honda Z50
expat
Posts: 451
Joined: Thu Sep 16, 2010 12:26 am
Location: Massachusetts

Re: YSR50 build

Post by expat »

No engine transplants, like my RZ, original with period correct upgrades..
85 RZ350
88 YSR50
82 RD350LC (Current project)
06 Triumph Daytona 675 (track toy)
97 Honda RS125 (race bike #1)
99 Aprilia RS250 (race bike #2)
89 RGV250 VJ21
85 RG500
85 RZ350 Hybrid
86 GSXR750
User avatar
two-stroke-brit
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-----
Posts: 1701
Joined: Fri Nov 22, 2013 10:49 pm
Location: Houston texas

Re: YSR50 build

Post by two-stroke-brit »

that frame looks well engineered for a fiddy cc. :smt001
top work as always buddy. :smt023
350LC,Athena 392 big bore,stock porting,swiss cheese air box,stock reeds,spec11 pipes.(now TSA big bore pipes)
She might not be pretty but she will always be a fun ride


1982 YAMA RD350LC
98KDX 220R
1967 TRIUMPH TIGER
2001 TRIUMPH TT600
hondaror
Posts: 2828
Joined: Mon Mar 03, 2014 8:44 pm
Location: Alberta, Canada

Re: YSR50 build

Post by hondaror »

That is unreal attention to detail, like your RZ. If I was to undertake that precision on a build, I'd never ride the thing. I couldn't do it. Kudos!
Rory
2 1984 RZ350s
1985 RZ350
9 1986-1990 RZ350s
2000 ST2
2005 749
2005 749 with 999 engine
expat
Posts: 451
Joined: Thu Sep 16, 2010 12:26 am
Location: Massachusetts

Re: YSR50 build

Post by expat »

Haven't had much time over the past few weeks but finally made some progress this weekend. I went to Ken's and we knocked out some stainless parts, he is a true craftsman, watching him mill the castle nuts for the axles was very impressive! My box of re-chromed parts arrived back from England and I also got my wheels re-painted. Another box of OEM parts has just arrived and on Friday I sent the Ohlins shock to GMD Computrac in Boston for a re-build, I should get it back in a week or so.
Progress should improve for the next 2 weeks so expect more updates!
Here are a few photos..

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85 RZ350
88 YSR50
82 RD350LC (Current project)
06 Triumph Daytona 675 (track toy)
97 Honda RS125 (race bike #1)
99 Aprilia RS250 (race bike #2)
89 RGV250 VJ21
85 RG500
85 RZ350 Hybrid
86 GSXR750
expat
Posts: 451
Joined: Thu Sep 16, 2010 12:26 am
Location: Massachusetts

Re: YSR50 build

Post by expat »

Ugh, I was putting the wheels on at the weekend, got everything in place and tightened up, put it on the side stand up on the lift and the wheel turned to the left when I had my back turned and the stand slipped off the side of the lift. The bike landed upside down on the floor right beside the RZ! Not too much damage, just a few scratches to the switch gear, dented rim on the speedo and a mangled rear light but very frustrating! To top it off, I got around to stripping the motor tonight, I bought the bike as a non runner and found out why! The rear skirt of the cylinder was snapped off and jammed up under the piston! Not what I was hoping for but not the end of the world!
I also drained about a liter of oil mixed with gas from the gearbox! I will be re-building with all new bearings & seals etc. so fingers crossed!
More pics to follow!
85 RZ350
88 YSR50
82 RD350LC (Current project)
06 Triumph Daytona 675 (track toy)
97 Honda RS125 (race bike #1)
99 Aprilia RS250 (race bike #2)
89 RGV250 VJ21
85 RG500
85 RZ350 Hybrid
86 GSXR750
User avatar
JonW
Posts: 10610
Joined: Sat Oct 10, 2009 4:33 am
Location: Sydney
Contact:

Re: YSR50 build

Post by JonW »

Yeouch! nightmare... feel for ya mate! :/
80 XT500 Supermoto!
81 RD350LC Resto
82 RD421LC Hybrid
82 RD350LC decapitation project
82 RD250LC JDM '251LC' YPVS
83 RZ350 Resto
84 RZ500 Resto
85 RZ350 F1 Resto
86 RZ350 F2 Resto
86 RZ350 F2 Hybrid

Like Watches? www.PloProf.com & www.DeskDivers.com
hondaror
Posts: 2828
Joined: Mon Mar 03, 2014 8:44 pm
Location: Alberta, Canada

Re: YSR50 build

Post by hondaror »

Crappy news on two counts. Keep at 'er. It looks great.
Rory
2 1984 RZ350s
1985 RZ350
9 1986-1990 RZ350s
2000 ST2
2005 749
2005 749 with 999 engine
User avatar
two-stroke-brit
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-----
Posts: 1701
Joined: Fri Nov 22, 2013 10:49 pm
Location: Houston texas

Re: YSR50 build

Post by two-stroke-brit »

AT least it didn't fall onto the RZ .
But i feel your pain ,i think we have all had a bike or something get away from us at sometime .
350LC,Athena 392 big bore,stock porting,swiss cheese air box,stock reeds,spec11 pipes.(now TSA big bore pipes)
She might not be pretty but she will always be a fun ride


1982 YAMA RD350LC
98KDX 220R
1967 TRIUMPH TIGER
2001 TRIUMPH TT600
expat
Posts: 451
Joined: Thu Sep 16, 2010 12:26 am
Location: Massachusetts

Re: YSR50 build

Post by expat »

Got the motor stripped tonight, taking the crankcases, head and carb for vapor blasting to my friend Dimitri tomorrow. Also stripped the tank with Aircraft stripper and sanded a couple of the fairing panels... Hopefully I can make some more progress over the weekend!!

A few pics...

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Last edited by expat on Wed Apr 22, 2015 1:06 am, edited 1 time in total.
85 RZ350
88 YSR50
82 RD350LC (Current project)
06 Triumph Daytona 675 (track toy)
97 Honda RS125 (race bike #1)
99 Aprilia RS250 (race bike #2)
89 RGV250 VJ21
85 RG500
85 RZ350 Hybrid
86 GSXR750
User avatar
JonW
Posts: 10610
Joined: Sat Oct 10, 2009 4:33 am
Location: Sydney
Contact:

Re: YSR50 build

Post by JonW »

Ouch on that cylinder! Is its the same as the smaller DT/RD models?
80 XT500 Supermoto!
81 RD350LC Resto
82 RD421LC Hybrid
82 RD350LC decapitation project
82 RD250LC JDM '251LC' YPVS
83 RZ350 Resto
84 RZ500 Resto
85 RZ350 F1 Resto
86 RZ350 F2 Resto
86 RZ350 F2 Hybrid

Like Watches? www.PloProf.com & www.DeskDivers.com
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