YZ250 woods bike - Yamaha Raptor Forum
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post #1 of 17 (permalink) Old 11-14-2016, 07:43 AM Thread Starter
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YZ250 woods bike

Last summer some kid contacted me needing cash for his YZ250. I was like sure since I and gave him $225. He wanted 400 but lets face it I pay what I want too and it needed more then just "a new engine case" They always do lol.

Got this clean 87 in.

I started building it up stairs in the house. I kept doing that until it got bigger. One day I carried it down the steps and into the garage.

I was not sure if the gold was going to work with the colors I picked so i had hubs and rims powder coated black. I replaced them myself and put on new tires. Next was shocks rebuilt at the race shop. Most of the factory plastics cleaned up nice with purple power. I might be getting rid of the black front end for white. As much as I like black its starting to burn me out. Just like the seat is being red might go black. I work on this a few hours a week.

Top end was sent out to www.eric-gorr.com to be bored, ported for woods riding and have power valve serviced. He has done other motors for me and is great at it and pretty fair on price. I am waiting for top end to be done and currently redoing the bottom end. When the kid busted a hole in the case aluminum went every ware. I found some in the crank bearings so I removed them. All engine hardware was replaced with allen head stainless steel bolts. I hate Phillips head screws.

Since I have months now due to broken foot this one will get be done slowly. I have 4 machines I am working on currently, some need done sooner then others.

Some will say the bike is old and is junk. I redo the old stuff because by the time I buy a bike thats 5-7 years old its going to be tired, it will need the same thing done. It will cost me more and well the 80's stuff is just cool.
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Cammy and morphrider like this.

2005 KFX700 good bit of mods
2001 Raptor 660R too many mods
1985 ATC250R

Last edited by oldskool83; 11-14-2016 at 08:11 AM.
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post #2 of 17 (permalink) Old 11-14-2016, 07:44 AM Thread Starter
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More.
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morphrider likes this.

2005 KFX700 good bit of mods
2001 Raptor 660R too many mods
1985 ATC250R

Last edited by oldskool83; 11-14-2016 at 08:12 AM.
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post #3 of 17 (permalink) Old 11-23-2016, 09:48 AM Thread Starter
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Finally got my crank apart. Bearings are done in cases, feel ok on the rod but $60 makes it all new. Foolish to now replace while in there. Hope to button up the bottom end in a few weeks after I order new rod kit.

2005 KFX700 good bit of mods
2001 Raptor 660R too many mods
1985 ATC250R
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post #4 of 17 (permalink) Old 11-23-2016, 09:53 AM
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totally agree with you. It's open, take care of business..

[U]2006 raptor 700

DMC Force 4's, FCI W/box, Dynatek Fusion
CP 11:1 piston, BaMotorsports porting, HC3
RacersEdge +3TB
YFZ 450 fronts & reworked rear by JOGACA
Trailtech 1 1/8 xbar w/vapor dash & Vapor installed
ODI Rogue grips & ASV pro pack levers
PRM Edge Baja bumper w/12" Cree spot/flood bar
PRM Desert grab bar
PRM A-Arm skids, GYTR skid, ProArmor swinger skid
Fastway steering stabilizer
68HP 49TQ

PM me if you need service manuals
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post #5 of 17 (permalink) Old 11-23-2016, 12:34 PM Thread Starter
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When I build a bike i touch everything, just sucks I am into the vintage stuff more then the modern stuff. Must me the crap I saw as a little kid i wanna have now.

2005 KFX700 good bit of mods
2001 Raptor 660R too many mods
1985 ATC250R
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post #6 of 17 (permalink) Old 11-28-2016, 12:13 PM Thread Starter
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I keep my parts in the house. Wife gives no fucks....I did seal up motor in a plastic bag until crank kit comes in.
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2005 KFX700 good bit of mods
2001 Raptor 660R too many mods
1985 ATC250R
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post #7 of 17 (permalink) Old 12-08-2016, 09:38 AM Thread Starter
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Got in my new IMS connecting rod kit. I have to run it over the shop to press in the crank friday...Should not be too long now before I can get motor together.

Shop is going to balance and true my crank. This should last another 30 years.

2005 KFX700 good bit of mods
2001 Raptor 660R too many mods
1985 ATC250R

Last edited by oldskool83; 12-12-2016 at 01:38 PM.
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post #8 of 17 (permalink) Old 12-20-2016, 02:13 PM Thread Starter
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Bottom end is done related to the trany and case halves. Now to work on clutch side. I have my eric gorr top end back.

2005 KFX700 good bit of mods
2001 Raptor 660R too many mods
1985 ATC250R
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post #9 of 17 (permalink) Old 01-12-2017, 08:57 AM Thread Starter
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All new stainless steel bolts holding motor together. New reeds, reed holder screws & clutch fibers still needed. Should be able to get some of that Saturday local. I still need a new FMF fatty pipe. I repacked my silencer last night. I might need a gear shifter, I have a few that were saved off bikes parted out. Just need to finish it by April 1. Still do not like the front suspension so that needs revalved or new lighter springs due to my weight.
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mattzila and ian77 like this.

2005 KFX700 good bit of mods
2001 Raptor 660R too many mods
1985 ATC250R
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post #10 of 17 (permalink) Old 01-12-2017, 01:05 PM
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Coming along pretty good amigo..

[U]2006 raptor 700

DMC Force 4's, FCI W/box, Dynatek Fusion
CP 11:1 piston, BaMotorsports porting, HC3
RacersEdge +3TB
YFZ 450 fronts & reworked rear by JOGACA
Trailtech 1 1/8 xbar w/vapor dash & Vapor installed
ODI Rogue grips & ASV pro pack levers
PRM Edge Baja bumper w/12" Cree spot/flood bar
PRM Desert grab bar
PRM A-Arm skids, GYTR skid, ProArmor swinger skid
Fastway steering stabilizer
68HP 49TQ

PM me if you need service manuals
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