TDR 125 19XX
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@MIGHTYMAN I found a dellorto phbh 28 for about £60 new, they use them a lot on vespas. I was thinking about using one on my 180 gilera runner fxr but I'm trying to keep it standard.
https://www.wasp-performance.co.uk/onlineshop/prod_1875543-Carburettor-PHBH-28-BS-with-Manual-Flip-Choke-Lever.htmlI think I still have the standard jet sizes written down if you need them.
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@tdrpaul The stock carb is better than those PHBH Carbs. They are a 28mm round slide carb. Flat slide is far superior.
wrote on 17 Jun 2016, 11:42 last edited by@Calum hi Calum I agree the flat slide is a lot better carb but the dellorto phbh 28 is the standard carb for the early Italian made tdr 125.
I have a low mileage one owner 1989 tdr and I want to keep it totally original but finding original parts isn't easy.Paul
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I'm definitely considering just getting a stock DT carb and inlet as a Dell Orto is proving too hard / pricey to source.
wrote on 17 Jun 2016, 14:29 last edited by@MIGHTYMAN or grab a mikuni tmx 32. They are common enough.
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@MIGHTYMAN or grab a mikuni tmx 32. They are common enough.
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@Calum Would I then still need a stock DT inlet for a tmx 32? Or is there a chance my current BIG inlet would be alright?
wrote on 17 Jun 2016, 17:52 last edited by@MIGHTYMAN the manifold in the pic is the standard manifold for the dellorto carb which has the oil pipe connection on the carb.
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@Calum Would I then still need a stock DT inlet for a tmx 32? Or is there a chance my current BIG inlet would be alright?
wrote on 17 Jun 2016, 18:00 last edited by@MIGHTYMAN Stock carb is 28mm TMX 32 is 32MM. So it should fit,.
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wrote on 28 Jan 2017, 14:29 last edited by Mightyman 4 May 2017, 16:44
Now it's (hopefully) going to be warming up outside a bit, I thought I would get back into this project again. Last night took a look at the crankshaft to find some of the bits of piston had been lodged inside the gaps in the conrod..
Also started the clean up job on the engine cases.
A bag full of steel wire rotary bits
Starting it off
15 mins = 1 down!
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wrote on 28 Jan 2017, 15:40 last edited by
Looks like that crank is going to want a rebuild.
I don't know how easy it is to get ahold of a new crank pin for these engines. If that crank pin is scored then you may find yourself needing to buy a new crank.
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wrote on 28 Jan 2017, 16:14 last edited by
The crank pink should have been sheilded by the bearing I would have thought? I wasn't going to rebuild the bottom end as it all turned over very smoothly but luckily I decided to pull it all apart in the end!
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wrote on 28 Jan 2017, 17:23 last edited by
What bearing lol. It's a roll cage bearing so it's completely exposed.
If the big end bearing has got bits of piston in it then consider it thrashed.
For the cost of 40 quid. I would rebuild the crank. Otherwise it will fail and cost you an engine.
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wrote on 28 Jan 2017, 18:11 last edited by
Don't worry it was going to all be rebuilt the second I opened the cases!