PIC HEAVY (wr200 topend , zeeltronic, tm34ss carb, V-force reed block,Larger radiator,DEP PIPE,)

[Louis-DT-WR]

My custom intake upgrade
Vforce v3 reed block - mikuni tm34ss carburetor

I cut the spigot off the reed block and centralized the flow to match the original and cut bolt holes to match

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I cut off the flow guide from the manifold (this is not a restrictor, people think it is but it isn't, removing it will lose performance) I do not need this as my reed block comes with one fitted.

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See what I mean?

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I used a tm34ss from a Aprilia rs250

Note the angle spigots, this makes fitting a lot more easy and the float bowl stays level

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I had to carefully enlarge the manifolds bore to 34mm and also increase the size to fit the carburetor in, I managed to add a grip step to match the carburetor (this adds more stability.)

Because the size of the carbs inlet I had to compromise. I tried a yz250 evos rubber boot which almost was perfect but it kept breaking due to age.

So plan B was like this:

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It wasn't the nicest way, but it works well

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I also removed the top of the airbox previous to this mod

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A few pictures of it fitted.

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I had to blank off the vacuum pipes on the carb and I also adjusted the autolube because of all my modifications

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I forgot to say that my DEP exhaust is for a wr200, so it's perfect for my bike. I had to make custom fixing and rubber mounts. Note how long the silencer was hahaha

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Dt125r dep and wr200 dep together. It looks like I'm punching it, can't remember the reason for that

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The silencer was a bit long

So I cut it down, I'm after a different end cap if anyone has one spare?

[Biker_123]

This bike really is amazing and I'm totally enjoying reading through this . I'm guessing all these upgrades must have cost a lot of money ,definitely worth it though lol if this was my bike I'd be scared to use it incase it got dirt on it or a scratch

[Louis-DT-WR]

@Biker_123 thanks a lot, not as much as you would think as I got most of the parts trade and I know a few engineers. And I sold a lot of the old parts for decent money.

Stay tuned

[Darty]

Sweet ride. Beast. Did you try the 3XP 200 top end with a 125 crank before? I know its a longer stroke with the 200 series. Which one do you think was lighter? I got a WR200 top end and 200R bottom end and gearbox replacement for a rebuild but I won't have a chance to compare the two.

[Louis-DT-WR]

No other won't run with a 125 crank it's like 8mm shorter stroke, also a dt200r has 0.7mm shorter stroke than a wr200 if I remember right. If you want to sell your top end I could build another engine

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And ofcourse I had zeeltronic make the first DT125R CDI for me and for all my help I only had to pay for the handheld reprogrammer

This was perfect for my project to set the powervalve limits and curve.

Also great for ignition timing.

Although they did wire it wrong originally and the powervalve ran backwards

But soon sorted it.

[Darty]

Safe, yeah 200s are like 57mm, 125s at 50mm. just wondered if you had built up a crank shaft assembly before hand. I wanted to start from scratch with a crank. Yeah had my suspicions about a DT200R crank in a WR barrel. I'll see what I can do with mine still.

This stuffs getting hard to get.

[Louis-DT-WR]

@Darty gets easier to understand if you skim the top off the barrel to allow for the dt200r crank it would change the port timing slightly, or you could skim half off the top and half off the barrel base. I've thought about that before

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So that was the engine / tuning complete.

A summary of what else I had done prior:

Shot blast and powdercoated all metal parts in blue and white.

First time rebuilding forks, removing the stems bottom bearing was very difficult.

I recently rewired the rear looming