230 conversion
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So I ordered a chinese loncin 230 engine the other day:
https://www.alibaba.com/suppliersubdomainalibabacom/product-detail/subject-1601293337863.html?from=share&ckvia=share_5a6f391286154bb29332384b484f81aa&needReward=truePrice was abt 750EUR shipped to Sweden, specified to be everything paid, delivered to the door, but I doubt it.. Maybe VAT included, but not the customs fees is my guess. Still not too bad comparing to the price/performance ratio with a Athena 170-kit.
Shipping is by boat(classified as dangerous goods), so it will take abt 2 months to get here..I have done some reading, and it seems people are using them in DT230's and also converting 125's. Might be an issue with the starter hitting the frame on my -88 DTR.
I also read that the stator needs to be replaced to work with a AC CDI like my Zeel, and the cure would be a Yamaha Majesty stator, so I ordered this:
https://www.aliexpress.com/item/1005006513896063.html?spm=a2g0o.order_list.order_list_main.10.34521802cdX2E8The comments I found about the engines seem pretty positive, so I have some hopes.. I have not found specs on the gear ratios, just hoping it will be a wide ratio box. Other concern is vibrations even if I have not read any complaints.
Carb will be a 30 or 34 PWK copy to start with (I have them in my box of carbs), depends on the size of the rubber boot to the reeds.
I might even try it with the 28 I have on the bike now, just to be able to run the stock airbox boot.
Exhaust is unclear, I bought a used Gasgas 250 exhaust that has some damage, but I might even try it with the Athena exhaust I have on the bike now. Other recommendations I have seen are WR200 and KTM 200EXC that can be made to fit.I will update with progress when I have installed the engine.
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Yes please @rallyfinnen
I'll be watching this intently
Always wanted a Lanza personally.
Will love watching this progress.
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So I ordered a chinese loncin 230 engine the other day:
https://www.alibaba.com/suppliersubdomainalibabacom/product-detail/subject-1601293337863.html?from=share&ckvia=share_5a6f391286154bb29332384b484f81aa&needReward=truePrice was abt 750EUR shipped to Sweden, specified to be everything paid, delivered to the door, but I doubt it.. Maybe VAT included, but not the customs fees is my guess. Still not too bad comparing to the price/performance ratio with a Athena 170-kit.
Shipping is by boat(classified as dangerous goods), so it will take abt 2 months to get here..I have done some reading, and it seems people are using them in DT230's and also converting 125's. Might be an issue with the starter hitting the frame on my -88 DTR.
I also read that the stator needs to be replaced to work with a AC CDI like my Zeel, and the cure would be a Yamaha Majesty stator, so I ordered this:
https://www.aliexpress.com/item/1005006513896063.html?spm=a2g0o.order_list.order_list_main.10.34521802cdX2E8The comments I found about the engines seem pretty positive, so I have some hopes.. I have not found specs on the gear ratios, just hoping it will be a wide ratio box. Other concern is vibrations even if I have not read any complaints.
Carb will be a 30 or 34 PWK copy to start with (I have them in my box of carbs), depends on the size of the rubber boot to the reeds.
I might even try it with the 28 I have on the bike now, just to be able to run the stock airbox boot.
Exhaust is unclear, I bought a used Gasgas 250 exhaust that has some damage, but I might even try it with the Athena exhaust I have on the bike now. Other recommendations I have seen are WR200 and KTM 200EXC that can be made to fit.I will update with progress when I have installed the engine.
@Rallyfinnen ciao, grazie per il tuo post. Anch'io vorrei installare il 230 sulla mia TDR125R per avere piΓΉ potenza. Rimango in attesa di tuoi cortesi aggiornamenti. Grazie
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I finally received the engine today! Started test-fitting it in a spare DTR frame, and there is a issue with the starter 'features' hitting the frame under the flywheel. I also started replacing the stator, as I'm going to run it with Zeel, so needs a charging coil as mentioned before.
This will take some time, plan is to measure up the engine completely and get it into EngMod2T simulation software first. So, I need to lift the top end, and probably I will do some cleaning of the ports and modify the head, as they seem to be very low compression from factory. I will need to sim the engine to get an idea of what way to go with the exhaust, modify an Athena exhaust, modify a gasgas 250 exhaust I have, or something else.. That way I can enter the exhaust dimensions and simulate them before cutting and welding etc. -
It has the kick starter shaft too, so I can just fit that if I want, but I want the electric starter.
The bushing for the mount under the swing arm is abt 1mm too long, so I had to grind off abt 0,5mm on each side of that one.
The intake has an enormous mounting diameter for the carb, so I ordered both a Cr125 and (hopefully) a smaller version of the DT230 intake. CR125 VF4 drops straight in, but might obscure the boost port too much. I have no plan to run e mega carb. I think 30-34mm should be enough.
I have taken off the cylinder now, and will measure the engine and simulate it in EngMod2T later on.
Expect no pictures here, because I don't use the image hosting services that go away, ransom your pictures etc.. (if you know, you know). I did put up some pictures in the Swedish DT125 FB-group. -
It has the kick starter shaft too, so I can just fit that if I want, but I want the electric starter.
The bushing for the mount under the swing arm is abt 1mm too long, so I had to grind off abt 0,5mm on each side of that one.
The intake has an enormous mounting diameter for the carb, so I ordered both a Cr125 and (hopefully) a smaller version of the DT230 intake. CR125 VF4 drops straight in, but might obscure the boost port too much. I have no plan to run e mega carb. I think 30-34mm should be enough.
I have taken off the cylinder now, and will measure the engine and simulate it in EngMod2T later on.
Expect no pictures here, because I don't use the image hosting services that go away, ransom your pictures etc.. (if you know, you know). I did put up some pictures in the Swedish DT125 FB-group.@Rallyfinnen It's annoying that images get ransomed. I simply don't have the bandwidth HDD space and/or money to host images.
That said, I have migrated my images to the server so that the issue of images being ransomed goes away for me.
Oh that's really awesome. I certainly hope it works out for you though. I think I'm done with the DTR platform for the time being and am concerned with my RD at the moment. But I am building an LC motor which one day may be transplanted into a DTR chassis...
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Hard to get tuning parts for the LC engines though! I have a modified Athena 170 on a DT LC engine, It was all I could think of. Welded on a reed inlet on the cylinder to get a cylinder reed. Had to send it for re-plating after that, because it was warped during welding. Runs about the same as the DTR which also has the Athena 170 for now (until I transplant the 230 engine). It's a custom build DT LC 'supermoto style' with a low slung exhaust and 18" wheels front and rear. Yamaha competition yellow with some DYI side fairings and graphics. I named it DTX. Put a lot of work (and money) on that one this winter!
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Not sure if this will work: https://www.facebook.com/photo/?fbid=10165850989140701&set=g.1650331705410143
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As a swede who recently have ogled DT200's and Lanzas for sale in Greece, pondering if a trip down with a small lorry is too big a venture, I find this HIGHLY interesting. Please keep us updated!
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As a swede who recently have ogled DT200's and Lanzas for sale in Greece, pondering if a trip down with a small lorry is too big a venture, I find this HIGHLY interesting. Please keep us updated!
As a swede who recently have ogled DT200's and Lanzas for sale in Greece, pondering if a trip down with a small lorry is too big a venture, I find this HIGHLY interesting. Please keep us updated!
Join the 'Yamaha DT125 Sverige' FB group, I try to update my post with some pictures from time to time. Plan is to get it running before the end of my vacation, in two weeks.
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Yeah, thanks - I used to be in that group but dumped my Facebook account this winter.
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By the way - this seems to be the most frequented site for looking at DT200/230 bikes and parts in Greece. I am not sure, but I think it was the only market in EU where they were sold.
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Would be quite a project to get one from Greece, picking it up, registration etc, probably a renovation too. It will be an expensive bike, but on the other hand, it can probably be sold for a higher price than a converted 125! If they get's too expensive, I'm reluctant to ride them because I might get a scratch etc. I thought they sold some in France too, but maybe not..
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Thing is that I have a relative that imports olive oil and make trips there in a truck from time to time. I figured I should go with him some time and pick up a bike. Registration in another EU country should merely be a paper thing, like 50β¬ plus a new number plate. There is one DT200R in Sweden, I saw it for sale the other year.
And yeah, it would probably need renovation. But I already fixed a DT125R this spring, and most parts are the same or can be found on eBay, so it is not a insurmountable issue.
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There were chaps on here that used to do something very similar but to the UK. Go down with a van and collect 5 or 6 bikes at a time.
Definitely worth while if it means you get the right bike.
My Dad imported a Lambretta GP from Brussells a few years ago, was no hassle.
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The 230 is up and running!
I have run about two tanks through it, but the chinese pwk carb I'm using is bad (had it in a box of junk carbs), so it drinks more than it should. Its stutters and putters on low throttle openings, and nothing I've done helps the issue completely (jets, needle and even filing the cutaway on the throttle slide). Runs well on more throttle though, and pulls pretty well. I have another clone pwk on the way, and hope that will work better (had good reviews). Internal gearing is higher, so 5th on the 230 is about the same as 6th on the 125. Went from 17 to 16 on the front sprocket, and now I'm doing just abt 5k at 80kph. It goes better than my sligtly modified 170-engine. I still have stuff to do with tuning the carb when I get it, tuning the zeeltronic, fixing the starter cicuit etc. I have not figured out how to integrate a starter button close to the throttle handle yet. Not a lot of space to add a switch next to the stop switch (that I'm using as a map switch now).
Engine seems fine, no problems with vibrations, shifts are good, and clutch is holding up. Some small drag from the clutch at standstill that can make it a bit hard to shift when standing still, even if the engagement point is fairly early on the travel of the lever. Using a DT LC clutch cable, because the DTR cable did not fit the engine, DT LC cable was a perfect fit.
I guess that's it for this update.
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