Replate or new cylinder time?

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crs
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Replate or new cylinder time?

Post by crs »

Just checked the top-end of my new '99 220...

Image

Thoughts please...

(If it does need replating and anyone knows somewhere good to do it in the UK, I'd appreciate the info'.)

Thanks.
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diymirage
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Re: Replate or new cylinder time?

Post by diymirage »

I would say have it bored over 1.0 mm and replated

I had one of my 200 done by langcourt and was very pleased with the work and the level of communication
(I used their US facility but they actually started out in the UK)
http://langcourt.com/page2.html

since it looks like yours needs a rebore be sure to include the KIPS valves so they can grind the main valve for piston clearance

they should also have the piston you need in stock so just buy it from them and they will match the bore to the piston

im guessing your cost will be about 250 pounds for a bore, replate and top end kit
newbbewb wrote:DIYmirage has it right.


-1996 KDX 200 woods weapon (converted to 99 green body)
-1996 KDX 200 plated street toy (barney edition)
-2003 Yamaha TTR125-L (wifeys bike)
-1997 KDX 220 project bike
crs
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Replate or new cylinder time?

Post by crs »

Thanks for the advice and link - I've sent them an email.
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Julien D
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Replate or new cylinder time?

Post by Julien D »

I'm not sure that would need a bore. I had one much worse off than that and langcourt did some weld repair and then plated back to factory spec.
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crs
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Re: Replate or new cylinder time?

Post by crs »

Langcourt have said they can replate to standard.
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scheckaet
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Replate or new cylinder time?

Post by scheckaet »

Julien D wrote:I'm not sure that would need a bore. I had one much worse off than that and langcourt did some weld repair and then plated back to factory spec.
+1
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fuzzy
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Re: Replate or new cylinder time?

Post by fuzzy »

Indeed, I believe Langcourt will bore out the plating, and replate for no cost. Overbore is additional, and required fee for gouge repairs, etc.
'91 KDX 200 Project $300 KDX
'95 KDX 200 Project $600 KDX
'94 WR 250 Always a project
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diymirage
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Replate or new cylinder time?

Post by diymirage »

Julien D wrote:I'm not sure that would need a bore. I had one much worse off than that and langcourt did some weld repair and then plated back to factory spec.

I guess if you weld enough material to bore it back down to stock bore, that's an option aswel :grin:
newbbewb wrote:DIYmirage has it right.


-1996 KDX 200 woods weapon (converted to 99 green body)
-1996 KDX 200 plated street toy (barney edition)
-2003 Yamaha TTR125-L (wifeys bike)
-1997 KDX 220 project bike
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Julien D
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Re: Replate or new cylinder time?

Post by Julien D »

They won't weld that. They'll just cover it with plating. Mine had some huge gouges and chipped ports from a grenaded piston, hence the welding. That cylinder is fine, it's factory plating is just shot.
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diymirage
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Re: Replate or new cylinder time?

Post by diymirage »

cool

not like the factory plating is all that durable anyway :naughty:
newbbewb wrote:DIYmirage has it right.


-1996 KDX 200 woods weapon (converted to 99 green body)
-1996 KDX 200 plated street toy (barney edition)
-2003 Yamaha TTR125-L (wifeys bike)
-1997 KDX 220 project bike
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