That is one pretty DT3, black looks so good on em.
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Old Brown
- Thread starter Team Junk
- Start date
I'm in for a DT forum/thread. Here's my 73. Kept it entirely original/unrestored except for putting new crank seals, chain/sprockets, rebuilding front forks/seals, installed regulator so 6v lights wouldn't fry, new points/condensor (that was fun), new tires, and repaired wiring. Gotta get a new "250" badge for the muffler, but just can't pay the going price. Runs strong and a ton of fun.
Dang! Thats a good looking survivor for sure. Do you ride it on the street?
Considerin' the beating most DT's get in their lifetime... that's a sweet lookin' survivor Larry!!
Forgot you had one also.....
Forgot you had one also.....
A relic. And a link to that MX360.
I got a lot more than I bargained for with this bike. One year only model and one of the last MX labeled models, I much prefer the MX label.
Kinda the missing link from the original MX enduros and the later YZ motorcross bikes.
CDI, steampunk mono shock and swing arm longer travel on both ends. Almost double the HP of the DT400.
This is going to be my Sunday morning ride around the hilltop bike.not going to be running a whole lot I want to try and keep it as original as possible
I don't really plan to do a whole lot to it other than trying to find a original tank
I will do the standard servicing on the carbs and reeds.
Paint the kick stand and a couple of other spots to preserve them.
Clean it and paint the head pipe and silencer just to protect them
Bend the brake pedal back out to where it can be used but I plan to try and leave it as original as possible
The good news is it almost has to have a CDI. A CDI known for not making a good spark at cranking speeds apparently
I got a lot more than I bargained for with this bike. One year only model and one of the last MX labeled models, I much prefer the MX label.
Kinda the missing link from the original MX enduros and the later YZ motorcross bikes.
CDI, steampunk mono shock and swing arm longer travel on both ends. Almost double the HP of the DT400.
This is going to be my Sunday morning ride around the hilltop bike.not going to be running a whole lot I want to try and keep it as original as possible
I don't really plan to do a whole lot to it other than trying to find a original tank
I will do the standard servicing on the carbs and reeds.
Paint the kick stand and a couple of other spots to preserve them.
Clean it and paint the head pipe and silencer just to protect them
Bend the brake pedal back out to where it can be used but I plan to try and leave it as original as possible
The good news is it almost has to have a CDI. A CDI known for not making a good spark at cranking speeds apparently
So its a full on 1976 MX400B? IMHO the MX400 tank is way sexier than the IT Plastic tank. In general the MX400 was one of the best looking open class racers ever made, and one of the most revolutionary MX'ers ever made. There is a company that will rebuild that Rube Goldberg shock. I'll see if I can dig up the info on em.
Pretty sure it's Race Tech that will rebuild those early Mono-shocks.
The DT400 was tuned for ultra torque. A VM28 carb pluged it up well to keep it somewhat tame.
They didn’t want to scare the crap out of people.
1975 DT 400
Bhp @ rpm 21 @ 5,600
Torque @ rpm 27 @ 5,000
The “Bat Train from Hell” model or as our auto columnist once described a Mercedes “The Stupid Fast Option”.
Proper VM38 carb and fat pipe and porting let some air into this beast .
1975 MX400
Bhp @ rpm 38.76 @ 8,000
Torque @ rpm 3.92 @ 7,000
They didn’t want to scare the crap out of people.
1975 DT 400
Bhp @ rpm 21 @ 5,600
Torque @ rpm 27 @ 5,000
The “Bat Train from Hell” model or as our auto columnist once described a Mercedes “The Stupid Fast Option”.
Proper VM38 carb and fat pipe and porting let some air into this beast .
1975 MX400
Bhp @ rpm 38.76 @ 8,000
Torque @ rpm 3.92 @ 7,000
1975 MX400B . I'm in awe.
And yes the tank sucks. I like plastic tanks but this thing is hideous. Not sure if it is a IT tank or a Clarke.
I'm just want to replace it with a stock one.
I know why it's there. This thing consumes so much fuel that I doubt it could make more than a couple of laps on the stock tank. The stock one is much prettier.
I'm leaving the side plates alone. Part of this bikes heritage.
Just want it to a good bones for restoration when it turns 60 or so.
I'm just want to replace it with a stock one.
I know why it's there. This thing consumes so much fuel that I doubt it could make more than a couple of laps on the stock tank. The stock one is much prettier.
I'm leaving the side plates alone. Part of this bikes heritage.
Just want it to a good bones for restoration when it turns 60 or so.
Oh damn! You stole that thing.
Hopefully you have the same luck finding the tank as you did finding the bike, they can get stupid expensive.
And yeah they definitely didn't have much more fuel capacity than a single heats worth.
Agreed, nothing wrong with a race bike having the scars to reflect its hard fought battles.
I cant wait to see this thing back in fighting shape!
Knowing its a 75 MX400, Id be WAY more apprehensive about changing the silencer and reed cage. Id probably just leave well enough alone, and just repair what needs repairing.
It's funny how things work out.
The Muttley project .
Starting with a Kawasaki 250 engine (Run what you brung). Will get it up and running .
Even before I had the 400 I wanted room for a 350 or larger upgrade in the motor mounts.
So I end up with a MX400 motor to measure .Any of the 400 motors are perfect.
I’ll be on the lookout for a 400 engine to hot rod for Muttley.
Muttley with the “Bat Train from Hell” option looks pretty interesting.
The Muttley project .
Starting with a Kawasaki 250 engine (Run what you brung). Will get it up and running .
Even before I had the 400 I wanted room for a 350 or larger upgrade in the motor mounts.
So I end up with a MX400 motor to measure .Any of the 400 motors are perfect.
I’ll be on the lookout for a 400 engine to hot rod for Muttley.
Muttley with the “Bat Train from Hell” option looks pretty interesting.
The bike was advertised as a "Yamaha DT". I went expecting anything from a DT175 to what ever. When I loaded it onto the truck and took the picture I posted, I was real pleased to have snagged what I thought was a DT250 for a great deal. Shocked when I got it home .
RD400 365 Lbs.
Bhp @ rpm 44@7,000
Torque @ rpm 30 @ 6,500 8.2 lbs per HP
1975 MX400 235 lbs
Bhp @ rpm 38.76 @ 8,000
Torque @ rpm 28 @ 7,000 6 lbs per HP
Bhp @ rpm 44@7,000
Torque @ rpm 30 @ 6,500 8.2 lbs per HP
1975 MX400 235 lbs
Bhp @ rpm 38.76 @ 8,000
Torque @ rpm 28 @ 7,000 6 lbs per HP
I remember that ad.
The MX/IT/DT ignition pickup.
Maybe a logo there ?
Maybe a logo there ?
It's a 1971 RT1MX. The jug doesn't look big enough but it is a 360. The MX400, YZ400 , DT400, IT400 all descended from this puppy. There were a few of these in my extend neighborhood. Chased one around the neighborhood quite often on my engine swapped 90cc mini enduro..That black and red just does it for me kinda like the black and gold John Player Special F1 lotus car.
I like where this was going. I need to go measure the forks on the fleet of Kawasaki dirt bikes in the barn.
http://www.xs650.com/threads/78-xs650-enduro-conversion-project-yamasaki.29005/
http://www.xs650.com/threads/78-xs650-enduro-conversion-project-yamasaki.29005/
I've been on the lookout for a good candidate for an offroad XS650 for while now. Basically a big ass DT clone.
