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Makotosun

77 dt400 running hellaciously...bad

  • the_trooper08
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Replied by the_trooper08 on topic Re:77 dt400 running hellaciously...bad

Ordered a slew of stuff from bikebandit.com
Throttle tube
Crank seals
Decomp seal
190 main jet
Pilot jet was out of stock
Rear shoes
Clutch cover gasket
And fly wheel puller
Oh and rear brake return spring for my ktm. Damn 2014 bike already breaking bits...
The following user(s) Liked this Post: Devin
04 May 2015 20:17 #31

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Replied by Devin on topic Re:77 dt400 running hellaciously...bad

Good deal :likey I know www.jetsrus.com and partzilla have pilot jets in stock.
www.legends-yamaha-enduros.com
04 May 2015 21:08 #32

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  • underground-mpyre
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Replied by underground-mpyre on topic Re:77 dt400 running hellaciously...bad

My compression reading was above 115 psi. I assume the is still good area to be around.
"My scars, bruises and broken bones are proof I've had fun!"
05 May 2015 05:40 #33

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Replied by Bigdog302 on topic Re:77 dt400 running hellaciously...bad

as far as I know,that is pretty decent.my 1975 DT400 had 125 psi when it was still in healthy shape,before the piston rattle developed.

your 1977 DT400 should be similar.
2 1968 DT1s,1970 RT1M,1970 DT1C,1971 RT1B,1971 Honda Z50K2,1974 DT100A 1974DT250A,1974 Honda MT250,2 1975 DT400Bs,1975 Honda CR250M1,1978 DT175E,1979 Honda CR250R.
Dave
Jesus is Lord!
05 May 2015 07:04 #34

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Replied by the_trooper08 on topic Re:77 dt400 running hellaciously...bad

So quick question. Would this carb work? Like bolt on and fit the cable? Just looking, new carb would take guess work out of if its an issue too. And they are relativly cheap. Wish i ciuld find a 36mm. All they have is 34 and 38.
www.canadasmotorcycle.ca/mikuni-vm-serie...or-vm38-21-38mm.html
06 May 2015 13:32 #35

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Replied by Devin on topic Re:77 dt400 running hellaciously...bad


I have heard much worse rattle. with 115 PSI and the very little rattle I heard, I would enjoy it, ride it, and monitor the rattle and your compression reading. If It gets bad pull the top end and send in it to Enduronut you will get it back within 30 days (or less) and he stocks most pistons, clips, rings, etc.

I agree with bigdog, It would be nice to get a few other opinions.
www.legends-yamaha-enduros.com
Last edit: 07 May 2015 12:31 by Enduronut.
06 May 2015 14:49 #36

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Replied by Devin on topic Re:77 dt400 running hellaciously...bad


Not sure how that carb would work....that said, the stock carbs hardly ever need replaced. I have seen a few with the metal eaten away but 90% of the time they can be brought back to life. Just a thought if you are trying to save some money.
www.legends-yamaha-enduros.com
06 May 2015 14:51 #37

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Replied by Wheels on topic Re:77 dt400 running hellaciously...bad

Sometimes you can get away with new rings/cross hatch hone.
06 May 2015 17:23 #38

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Replied by the_trooper08 on topic Re:77 dt400 running hellaciously...bad

Ok ill just clean and rejet carb.

Ok so pulled the ca4b off again to take to shop to clean.
Took of exhaust to clean out too. Here are some pics theough exhaust port. .... top end time? Or ok? I thunk itll do for now. Crank seals are on their way.




Last edit: 06 May 2015 20:49 by Devin. Reason: inserted pictures
06 May 2015 20:48 #39

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Replied by the_trooper08 on topic Re:77 dt400 running hellaciously...bad

Piston




Last edit: 06 May 2015 20:50 by Devin. Reason: inserted pictures
06 May 2015 20:49 #40

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