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1975 yamaha dt250 carb

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Replied by AirborneSilva on topic 1975 yamaha dt250 carb

My DT400 head has that same "plug" in the head, I figured I could have a machine shop do it for me.

RT325, I have a compression release on my DT2 and use it all the time for coming to a stop and use my brakes very little unless someone is behind me then I put light pressure on the front brake to turn on my brake light.  The Enduros I had back in the day, 175 and 400 both had them, I like them no matter what some people may say about them - to each his own

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1976 DT400C
1981 DT175H
1972 DT2 250
25 Sep 2022 16:15 #21

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Replied by RT325 on topic 1975 yamaha dt250 carb

Tricks eh!!, you guys know them all lol.
25 Sep 2022 19:29 #22

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Replied by dan on topic 1975 yamaha dt250 carb

The sound is just cool.
Brings back memories.
Dan
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26 Sep 2022 04:20 #23

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Replied by dan on topic 1975 yamaha dt250 carb

And when I start the 400, I like to spin it a few times before turning it on.
With the release, it would spin easier and faster for that procedure.
Dan
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26 Sep 2022 04:22 #24

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Replied by AirborneSilva on topic 1975 yamaha dt250 carb

No brakes were harmed in the making of this video

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Test run after setting points

1976 DT400C
1981 DT175H
1972 DT2 250
Last edit: 26 Sep 2022 18:46 by MarkT.
26 Sep 2022 04:29 #25

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Replied by dan on topic 1975 yamaha dt250 carb

She sounds so crisp!
Nice shiny chrome also...
Dan
dan
26 Sep 2022 14:00 #26

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Replied by AirborneSilva on topic 1975 yamaha dt250 carb

Thank you Dan, she's running good, starts first kick every time - well unless I forget to turn the fuel spigot off 

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I do have a little more tuning to do on the carb I think but it's really close.
1976 DT400C
1981 DT175H
1972 DT2 250
26 Sep 2022 14:04 #27

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Replied by RT325 on topic 1975 yamaha dt250 carb

Sounds nice & crisp & a willing revver now. I had to play it back a few time to see what was going on thinking ya hitting a kill switch--but a decomp in the head--ok--ya might've started a trend there!!.
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28 Sep 2022 02:47 #28

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Replied by AirborneSilva on topic 1975 yamaha dt250 carb

Thanks Morley, she is running really well now thanks to your help!  Love the decomp, just don't understand why some look down on them but as I said to each his own...
1976 DT400C
1981 DT175H
1972 DT2 250
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28 Sep 2022 03:36 #29

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Replied by dan on topic 1975 yamaha dt250 carb

I am looking at MIKUNI VM 28 49 carbs on ebay.  .My question is, does the vm 28/49 carbs have different intake and air filter side diameters available?  The only ones I see have intake side OD 37mm, my carb off my 250 is 35mm.And air filter side 50mm OD while my 250 carb is 42mm OD or so.  It seems the boot and intake holder would clamp down to those smaller diameters.  Will these ebay mikuni vm28/49 carbs mount ok to my 250?
Dan
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Last edit: 29 Sep 2022 13:15 by dan.
29 Sep 2022 13:10 #30

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