Forum Corner
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Honestly, they are absolutely worthless!
The porting is no better than this:
http://mickabbeytuning.co.uk/Cyl4.jpglink no longer workshttp://mickabbeytuning.co.uk/Greg1.jpglink no longer worksThe only difference is these barrels are common as much. Cheap as chips. Further tunable.
Also I think you can bolt those belgardas barrels on unless I am mistaken. Or at least you can put a 3mb on a belgarda crankcase.
No those barrels are not worth it. It won't work unless you have the head and powervalve and I enquired about fabricating one and it's a no go.
Nice but way too overpriced. Should be bought and displayed in a museum.
Nice spot though
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@Calum Rotax engines are just better true. Have you ever ran a normal 3MB head on the 3MB-P barrel? The TZR4DL head had a different squish. I can't find one.
SP barrel not a straight swap unfortunately
The SP transfers are different, you could always modify a 4DL bottom end, but it's pointless without SP powervalve and crank. Not likely to find those at all. Need a complete SP engine. The 4DL-1, and 3 versions are the common lumps with standard internals and 3MB00-P top end.
It's a shame these Yamaha 125's really don't tune very well. Cant seek power with them.
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@Darty Is it though?
I used to think like that. When I say Aprilia rs125 to people they cringe. They were highly strung motors sold to teenagers. Fair enough the original purchaser looked after it. But once it trickled down in value they got a reputation of being nothing but unreliable.
Far from it in fact. Those bike took much more of a battering than many of bikes of its class. The only thing I will say about Aprilia are the electrics. That was their achiles heel.
Now Yammy on the other hand. They have their rip roaring two strokes. But they were never for road use. The Yamaha TZ series was a phenomenial bike that would run rings around many other bikes. But it was a track going bike only.
Even their Belgarda models were Italian made and not really Japanese. Nah the Japs sort power through reliabilty. As they did with most of their stuff. It isn't slow, but it isn't tear your arms out. Until you get to competition where reliability takes a bit of a dive.
Anyway the point stands. Yamaha did their thing and we have the DT. Other manufacturers did other stuff.
The belgarda is a gorgeous bike, but I liken it to the Aprilias and Cagivas of their day. I am told by Yamaha that even the SP barrel is Polinis work.
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@Calum Italian electrics suck. That is very true. Had some bad times with an old CH racing WXE50.
Aprilia's are largely trashed because there much racier, and without maintenance and mechanical sympathy they don't last. It's hard to say what is a better road bike in real terms.
Japanese can do both, just look at the Kawasaki KDX125SR version, Best of both worlds. I'd liken our DT projects to one of those KDXs in just a De-restricted spec. They are quick. Lightweight, and Kawaka build quality not to bad.
Yeah the Belgarda is pretty much Italian, the SP's were all assembled, and re-designed in Italy for racing.
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88-89 are the ones! Not even the best. Standard trim white on Red... It's thee DT125R to have.
Unfortunately the Seat is not original, the Head light decal is off an LC?
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@Darty I dunno man. There was always something about the 89 DT I just loved. I have the biggest head of anyone I know. My bike is the best this and that.
But hands down, my time again, it would be a 1989 dtr all over. I only have my dt because it was what was available 6 years ago lol.
Nice spot. Worth that price imo
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Geekin' out, 1989-90 Yamaha DT125R (3RP1) Swiss market model
Was in Switzerland for a bit and I'm eyeing up a row of bikes after parking up.. as you do, when I spotted this absolute Gem. Went back the next day and found it parked up again, this time I had my camera.
This thing was spotless.
Electric' - Electric Starter model, - Was specific to just a few markets on these early models
Very original, this thing was tidy, Original grips and levers, chain and sprockets, Note the optional Mudguard flaps, Rear tool Kit, and the seat strap handle, hard to find stuff. Original graphics and colour scheme that I've never seen before on a 3RN1/2 model type.
The early 3RN1-8 models and YZs up to 1989 wear painted black calliper body's, hubs, top yokes and bars. It's a really 80s detail. Oldschool.
I didn't hang about, but this thing is a time capsule.
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Old news,
Eyeing up bits of the 125R Athena Top end kit and a PDF which I had forgotten. Athena have lovingly provided a bit of information as to what their product delivers. TZR data? Hard to believe I could make that.
Sorting out my 4DL-1 top end, all fresh I'm not expecting more than 22/23hp at the sprocket,
Current map on the Ignitech though is giving me at least a 2hp gain over standard,
Will have to see
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You also could have got one of these around that time.
They're fairly uncommon as well, have one in my garage in pretty poor condition.
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yeah, they're road legal and Restricted but theres also a 200cc version. Pretty much Suzuki's competitor for the DT i think, doesn't seem like it sold too well though.
