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Author Topic: My DT100 Street racer build  (Read 3777 times)

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Offline jimmyblast44

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My DT100 Street racer build
« on: January 02, 2013, 12:41:42 PM »
Picked up this bike from eBay in August. Hadn't ran in 3 years. Was going to get it running and flip it. But I kinda fell in love. Lots of fun to ride a bike at its limit. Mag was full of water which must of froze and damaged the condenser. Replaced points and condenser and it ran. Tore down and cleaned everything. Repainted frame and swing arm. Looked a lot better.
But it only topped out at 45 mph. That's when it started ....

Offline jimmyblast44

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Re: My DT100 Street racer build
« Reply #1 on: January 02, 2013, 12:44:15 PM »
Started with open air cleaner pod.

Offline jimmyblast44

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Re: My DT100 Street racer build
« Reply #2 on: January 02, 2013, 12:47:56 PM »
Picked up a FMF pipe for a '95 YZ80 and started modifying.

Offline jimmyblast44

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Re: My DT100 Street racer build
« Reply #3 on: January 02, 2013, 12:50:07 PM »

Offline jimmyblast44

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Re: My DT100 Street racer build
« Reply #4 on: January 02, 2013, 12:52:12 PM »
26mm carb from YZ80. Bolts right up. Gotta mod throttle cable and clearence exhaust.

Offline jimmyblast44

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Re: My DT100 Street racer build
« Reply #5 on: January 02, 2013, 12:56:08 PM »
Swapped the cylinder from a MX100 with a Wiseco piston. Did some clean up on the ports. The MX has more aggressive port timing and is aluminum vs the stock all iron cylinder. Gain power, lose weight.

Offline jimmyblast44

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Re: My DT100 Street racer build
« Reply #6 on: January 02, 2013, 12:58:23 PM »
Had to repair cracked head. Plugged the unused compression release hole.

Offline jimmyblast44

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Re: My DT100 Street racer build
« Reply #7 on: January 02, 2013, 01:02:50 PM »
Scored a RD125 front wheel. Much larger brake. 18". Bolts into fork but have to move brake lug. Need to get new spokes and will powder coat the rims. Will be installing road tires as the knobbies can be scary on pavement.

Offline jimmyblast44

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Re: My DT100 Street racer build
« Reply #8 on: January 02, 2013, 01:05:13 PM »
Got these RFY shocks from eBay. $100. Fit good. Much stiffer.

Offline jimmyblast44

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Re: My DT100 Street racer build
« Reply #9 on: January 02, 2013, 01:07:46 PM »
Started work on seat/fender.

Offline jimmyblast44

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Re: My DT100 Street racer build
« Reply #10 on: January 02, 2013, 01:10:07 PM »

Offline rockit

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Re: My DT100 Street racer build
« Reply #11 on: January 07, 2013, 07:27:44 AM »
Great work.

Offline pioughd_rd400

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Re: My DT100 Street racer build
« Reply #12 on: January 11, 2013, 01:16:11 PM »
Killer build. I am loving the pipe work. Are you going to put rearsets on there?
1975 RD350 cafe party boy
1984 RZ350
2 Yamaha YSR50
Puch Magnum
Honda NS50F
Franken Bike...
tinkerville...........

Offline l1ability

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Re: My DT100 Street racer build
« Reply #13 on: January 11, 2013, 03:25:21 PM »
that pipe hugs that motor too well! love it, looks stock  :thumbsup:

always nice to see a small cc build
76' RD400
67' Ducati Cadet 100
90' RM125

Offline jimmyblast44

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Re: My DT100 Street racer build
« Reply #14 on: January 11, 2013, 04:17:51 PM »
Thanks. Yeah, I would like to have rear sets but the kicker presents a clearance issue. So not sure yet.
Started engine work. Stripped cases and did some polishing. Ordered new bearings, seals, and gaskets.
Wasn't going to go this far but found loose bearing parts in bottom of trans. The mainshaft needle bearing was broken.
Always something with these old bikes. Finding its better to just go through everything so I know it's right.