251LC

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JonW
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Re: 251LC

#76 Post by JonW » Fri Apr 20, 2018 12:29 am

Ok, so more progress...

Yesterday I finally got round to powder coating the clutch cover I had welded (Thanks Nicko!), ground back, welded some more (Thanks gain Nicko!), ground and filed back some more and then cut for the window, all that was back on page one!

Now its done I can reveal the plan for this one... I also powder coated the clutch end plate, here is a mock up:

Image
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

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waltmil
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Location: Panacea, FL USA

Re: 251LC

#77 Post by waltmil » Fri Apr 20, 2018 7:05 am

You do realize that is going to look pink when it is running.
Red/White US '84, Spec II pipes, Y-boot w/K&N, Fox Shock, Mikuni carbs?

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JonW
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Re: 251LC

#78 Post by JonW » Fri Apr 20, 2018 9:16 am

LOL it will look black with all the oil flying off it... Still, im not afraid of pink, its the corporate colour of Subaru's STI dept. :)
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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two-stroke-brit
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Re: 251LC

#79 Post by two-stroke-brit » Fri Apr 20, 2018 10:41 am

JonW wrote:LOL im not afraid of pink, its the corporate colour of Subaru's STI dept. :)
you could of done it like the the old 60s/70s tv show "time tunnel" scroll.
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

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JonW
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Re: 251LC

#80 Post by JonW » Fri Apr 20, 2018 6:59 pm

LOL, that would have been fin to powder... its not exactly a simple flat disk.

So I detect no love for the red/white prop tell-tale style of my clutch end plate. no one else has done anything similar, no we know why :)
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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two-stroke-brit
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Re: 251LC

#81 Post by two-stroke-brit » Mon Apr 30, 2018 2:11 pm

it will interesting to see it in action.
: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

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JonW
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Joined: Sat Oct 10, 2009 4:33 am
Location: Sydney
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Re: 251LC

#82 Post by JonW » Fri May 04, 2018 2:56 am

Been working on Brakes again... This time it was the turn of the master cylinder for this bike.

Im using a 250's 1/2" on this one for better brake feel, they look the same as the 350 so its no big deal of course, but should be nicer in use :)

I stripped, blasted, cleaned and powdercoated the cylinder and all the associated parts, being super careful with the bore. More of a job than you might think as some of these units have led a really hard life and they have many holes. I then cleaned the corrosion away with AluBrite and polished the bore a little to ensure it was clean.

I sourced a new OEM rebuild kit for the working parts and fitted it along with rezinc’d banjo bolts and new copper washers.

I cleaned up the OEM rubber with AluBrite to eat away the stuck on alloy corrosion and it came up ok, its still a bit pitted for years of encrusted corrosion and because of that is a little warped but its much better than it was and should seal now instead of crushing against the oxidisation.

The original clip in style sight glass was too far gone so I fitted one from a KTM Brembo after finding that it has similar dimensions online, very few masters have this kind of clip in style. I reused the LC’s o ring to pad it out and get the fit needed and while the outer edge is only 14mm to the LC's 16, the most obvious thing is I now have to 'MIN' marks, but you just follow the one cast into the mcyl body of course.

Finishing it will be a re-powdered original lever and I resued an old brake light switch that I checked was working along with new screws.

This looks news now, it was total junk before... Sadly no before pics :/

I also powdercoated the brake splitters as well. I noticed that the LC and the RZ versions are identical though the RZ unit has 47X (RD/RZ500 code) on it while the LC has no identifying marks.


Image

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Ive also been cutting some LC brake disks on a brake lathe at my mates workshop, After blasting the paint off I got them on the machine.

It wasnt all good... one to come up great and still well within specs, one looks great but was undersize and one was so warped it was a joke.

Anyone (locally i guess as they are heavy) have any spare disks? I now need one more... hmm..

NB: (please excuse my paint job, the idea is that the pads will clean off the paint edge in use :)

Image

Image
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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two-stroke-brit
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Re: 251LC

#83 Post by two-stroke-brit » Fri May 04, 2018 2:03 pm

Top job as always ,
love the green bolts too.
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

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JonW
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Re: 251LC

#84 Post by JonW » Fri May 04, 2018 7:51 pm

Thanks Mark.
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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2smoke
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Re: 251LC

#85 Post by 2smoke » Fri May 04, 2018 8:04 pm

I have a LC front master here that needs a clip in window.
Does that KTM one need mods to it? It doesn't matter that its smaller?
Do you have a pic of the inside?
Looks great. Wish I could powdercoat at home.
Colin
79 RD400F Daytona Special
81 RD350LC
89 TDR250
75 Kawasaki H1 500
77 Can-am Tnt250

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JonW
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Re: 251LC

#86 Post by JonW » Fri May 04, 2018 9:18 pm

Doesnt need any mods, but did need the LC's fatter O ring. Its not quite as large on the flange on the outside and ive not tested it for leaks yet... but seems tight enough. The body and depth of the window are fine, its only the flange thats 2mm smaller.
Sorry no pic of the inside, the KTM clip fitted in snugly tho.
I powdercoat at my mates workshop, he bought an oven from the local scratch and dent place and a gun from ebay, powder is cheap as chips, its very simple, just time consuming, Ive done hundreds of parts in it.
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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2smoke
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Location: Niagara Ontario Canada

Re: 251LC

#87 Post by 2smoke » Fri May 04, 2018 10:39 pm

Ok thanks, I will pick one up at some point.
Were replacement windows ever available from Yamaha?
Colin
79 RD400F Daytona Special
81 RD350LC
89 TDR250
75 Kawasaki H1 500
77 Can-am Tnt250

User avatar
JonW
Posts: 10598
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Location: Sydney
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Re: 251LC

#88 Post by JonW » Sat May 05, 2018 5:00 am

not that i know of.
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

User avatar
JonW
Posts: 10598
Joined: Sat Oct 10, 2009 4:33 am
Location: Sydney
Contact:

Re: 251LC

#89 Post by JonW » Thu Sep 13, 2018 1:34 am

Bought a tank from Webike for this bike, this one as this bike will have the Japanese white colour scheme with the fitting name decal as its getting the RZ engine:

Image

The tank arrived and its really quite something. Its quite gold in the pearl, different to my usual colours so im very happy, just got to paint the smaller parts to match now.

Ive also bought a seat foam and cover from Webike as well as I like this cover style, again to be different and more 'Japanese' with this one.

Image
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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two-stroke-brit
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Location: Houston texas

Re: 251LC

#90 Post by two-stroke-brit » Fri Sep 14, 2018 2:05 pm

like the JDM scheme.
a buddy of mine has a JDM fzrr400 that i might be looking at.
your 250 is going to be a peach :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

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