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LIVETOSHRED

2000 WR400F Rebuild - Process Pictures.

215 posts in this topic

Hey all,

Been a long time lurker and first or second time poster.

The bike was a best friends who passed back in 2008. The bike was given to me by his father. as all me and his son did was ride. It has sat for a couple years and finally, I pulled it out, dusted it off and started this Memorial build for Robert "Big Sexy" Kennedy.

The motor was just rebuilt by Jeff at Temecula Cycles with a new piston, rings, adjusted valves, new water pump seal and a quick run through the carb. It would fire up but only with the choke on so I know the carb is going to need some loving once the build is done.

Here are some pic's of the process thus far. I have spent about 4 days on it to get it torn down. There are some big plans for this bike and I'm hoping that by the time it's completed, it will be one of a kind.

Before Photos:

201639_2062491886808_1380051889_32504533_6775366_o.jpg

204986_2062494846882_1380051889_32504536_3400981_o.jpg

220685_2062493286843_1380051889_32504535_589361_o.jpg

Day 1:

210059_2069863391091_1380051889_32516851_4668963_o.jpg

200883_2069559863503_1380051889_32516451_2363953_o.jpg

219802_2069566263663_1380051889_32516463_611843_o.jpg

Day 2:

219799_2074530827774_1380051889_32523644_3846481_o.jpg

219166_2074520987528_1380051889_32523641_2343466_o.jpg

Day 3:

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Day 4:

244327_2087868681212_1380051889_32542333_1602210_o.jpg

219316_2087865081122_1380051889_32542328_2698935_o.jpg

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Hey, whats your plans for this rebuild? Full respray,every bearing replaced, No expense spared??:thumbsup:

The latter method for the most part. Everything is getting powdercoated in one way or another and by the time this is done, i'm hoping to obtain some help on how to plate it in the lovely state of California so I can putt it around on the streets.

My main purpose of this build is to bring it back to life for my fallen friend...

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The latter method for the most part. Everything is getting powdercoated in one way or another and by the time this is done, i'm hoping to obtain some help on how to plate it in the lovely state of California so I can putt it around on the streets.

My main purpose of this build is to bring it back to life for my fallen friend...

what part of cali you live?

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Southern California. Live in Corona.

Well I plated it mine 3 years ago here in Fresno Ca and I just recently plate it a 02 CRF450 ;-)

Man that thing is going to look awesome

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Junk the stock carb and get a take off from an 03-06 WR/YZ450. It runs much better and no worries (supposedly) about sucking in the slide vacuum plate and trashing the engine.

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Junk the stock carb and get a take off from an 03-06 WR/YZ450. It runs much better and no worries (supposedly) about sucking in the slide vacuum plate and trashing the engine.

Have you done this? I have done a bunch of reading and research about jetting and the setup on this bike so when it gets to that point, I have a good starting point. I have read good things about the JD Jetting kit but am open to options.

I am kinda a fickler about my 4 strokes running their best. My YZ450F took a few weeks to get dialed but now it runs amazing. No popping on deceleration, no lag on the get-go and idle's like a champ. I am optimistic about getting the same results with the WR.

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Yes.

Mine sucked the vacuum plate, but luckily no damage that I could find. I replaced it with the 450 carb and it runs much cleaner. Jetting is very similar, so I suspect the claims that the gen3 FCR carbs are more forgiving are true.

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Hi Livetoshred...

The Wr450F is thursty on fuel and i have had a flat spot with no luck 2 bikes shops to solve the problem..

Try these specs of a Wr450F carby expert tuner..

http://www.dirtbikeworld.net/forum/showthread.php?t=77742

I am following these specs to the letter to hopefully solve the problem..

Just to bare in mind using the 450f carby!!! :smirk:

adjustable Acc power pump,

adjustable fuel/mix screw..

As above jetting specs...

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Hi Livetoshred...

The Wr450F is thursty on fuel and i have had a flat spot with no luck 2 bikes shops to solve the problem..

Try these specs of a Wr450F carby expert tuner..

http://www.dirtbikeworld.net/forum/showthread.php?t=77742

I am following these specs to the letter to hopefully solve the problem..

Just to bare in mind using the 450f carby!!! :smirk:

adjustable Acc power pump,

adjustable fuel/mix screw..

As above jetting specs...

If I decide to go this route and trash the WR400F carb, where would be a reasonable place to score a WR450F carb?

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Day 7 - Parts are due back from Powdercoat anytime so time to start on the small stuff!

Before

220562_2111498391940_1380051889_32567784_6414105_o.jpg

After

243294_2111499991980_1380051889_32567786_7293939_o.jpg

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If I decide to go this route and trash the WR400F carb, where would be a reasonable place to score a WR450F carb?

Only reasonable places are Krogblog (aka Craig's List) or Fleabay.

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Day 7 - Parts are due back from Powdercoat anytime so time to start on the small stuff!

Before

220562_2111498391940_1380051889_32567784_6414105_o.jpg

After

243294_2111499991980_1380051889_32567786_7293939_o.jpg

What did you use.... steel wool? Look good.

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What did you use.... steel wool? Look good.

200 Grit sand paper to 100 Grit to Steel wool. I will polish it when I get the other side done. it's a pain! haha

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