YSR50 build
Moderator: rztom
Re: YSR50 build
Fair point of course, good find :)
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
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
Re: YSR50 build
Got the tank stripped finally and some more repairs and prep done on the bodywork.
Getting there slowly!
Getting there slowly!
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
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
-
- Moderator
- Posts: 7038
- Joined: Wed Mar 24, 2010 2:20 am
Re: YSR50 build
Yamaha tanks sure look sexy naked.
Re: YSR50 build
I thought the same! Just got to pull the small dent a little and hit it with the paint.silverstrom wrote:Yamaha tanks sure look sexy naked.
I am going to color match the Red to the decals I bought, they were slightly off to the original Red but not enough to notice for 99% of the population!
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
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
Re: YSR50 build
My parts are ready at the vapor blasters. What an improvement!!
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
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
Re: YSR50 build
My son just added another 2 stroke to the stable.. Its a screamer!!
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
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
Re: YSR50 build
What year is that puppy?
Rory
2 1984 RZ350s
1985 RZ350
9 1986-1990 RZ350s
2000 ST2
2005 749
2005 749 with 999 engine
2 1984 RZ350s
1985 RZ350
9 1986-1990 RZ350s
2000 ST2
2005 749
2005 749 with 999 engine
Re: YSR50 build
It's a 1995. Just got it registered so he will be good to go once it is inspected!hondaror wrote:What year is that puppy?
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
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
Re: YSR50 build
I am not sure, it could well be. It is a 1988 model, I recall the DT50 but can't remember specifics about the motor.sedsberg wrote:Is that the same engine as the DT50?
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
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
Re: YSR50 build
That engine was in production from early/mid 80's to about 1995 I think. So it's most likely the same, maybe apart from cylinder head and carburettor.expat wrote:I am not sure, it could well be. It is a 1988 model, I recall the DT50 but can't remember specifics about the motor.sedsberg wrote:Is that the same engine as the DT50?
That would also mean the DT80 engine should fit right in without any modifications at all. I did that to my old DT50R.
1990 RD350 F2 1WT
Re: YSR50 build
I dont remember the DT50 having the top end like you have, but the rest could well be the same. I think the motor was also a derivation of the older Enduro models from the 70s, but Im not 100% sure, its been a long time since I sat on a DT50 LOL
Found this... says the DT50 came out in 81.
http://en.wikipedia.org/wiki/Yamaha_DT50MX" onclick="window.open(this.href);return false;
My friend had a new one in 1984, I aspired to that bike from the seat of my TS50ER (full power 50) and later an MT50 (70cc).
Found this... says the DT50 came out in 81.
http://en.wikipedia.org/wiki/Yamaha_DT50MX" onclick="window.open(this.href);return false;
My friend had a new one in 1984, I aspired to that bike from the seat of my TS50ER (full power 50) and later an MT50 (70cc).
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
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
Re: YSR50 build
There are a number of engine swaps that people have done. I am going to stick with the stock motor, just jet it for the carb and filter. Realistically, the bike wont get ridden much and I have plenty of performance machines without needing to flog a little old bike to death!!sedsberg wrote:That engine was in production from early/mid 80's to about 1995 I think. So it's most likely the same, maybe apart from cylinder head and carburettor.expat wrote:I am not sure, it could well be. It is a 1988 model, I recall the DT50 but can't remember specifics about the motor.sedsberg wrote:Is that the same engine as the DT50?
That would also mean the DT80 engine should fit right in without any modifications at all. I did that to my old DT50R.
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
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
Re: YSR50 build
Hoping to get some work done on the YSR over Christmas.
I haven't had a lot of time recently.. well, all year as I have been racing my RS125 Honda in a local vintage championship and also traveling a lot with work.. OK, enough excuses!
Since the last updates, I have managed to get all the bodywork painted, wet sanded and some decals applied. I have also rebuilt most of the motor and re-installed it minus the top end. I blasted the cylinder and treated it to a coat of high temp paint, re-plated a bunch of internal parts such as cylinder studs which had some surface rust (I am a bit OCD!) and made a few more parts in stainless. I also sourced a Toomey expansion chamber but it has a pretty big dent in the bottom so will need some heat and air pressure to remove it!
A few pics...
Engine mounting bolt
Replacement half done
Paint work!
I haven't had a lot of time recently.. well, all year as I have been racing my RS125 Honda in a local vintage championship and also traveling a lot with work.. OK, enough excuses!
Since the last updates, I have managed to get all the bodywork painted, wet sanded and some decals applied. I have also rebuilt most of the motor and re-installed it minus the top end. I blasted the cylinder and treated it to a coat of high temp paint, re-plated a bunch of internal parts such as cylinder studs which had some surface rust (I am a bit OCD!) and made a few more parts in stainless. I also sourced a Toomey expansion chamber but it has a pretty big dent in the bottom so will need some heat and air pressure to remove it!
A few pics...
Engine mounting bolt
Replacement half done
Paint work!
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
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
- two-stroke-brit
- -----
- Posts: 1701
- Joined: Fri Nov 22, 2013 10:49 pm
- Location: Houston texas
Re: YSR50 build
Good progress
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
She might not be pretty but she will always be a fun ride
1982 YAMA RD350LC
98KDX 220R
1967 TRIUMPH TIGER
2001 TRIUMPH TT600