Hello and welcome bud.
Like Calum said,tell us some more of the DT.

@BalnAndCantGetUp Yeah, the problem is, is the way they are and what are you have are two different things.

The way Yamaha intended the machine, and the way it ended up varied from its release in 88 to its discontinuation in 2007. I am merely recommending putting it back to how Yamaha originally envisaged the machine makes a lovely bump in performance with minimal degredation in reliability.

So in the DTRE/X they put a huge honeycombe restriction in the exhaust expansion chamber. They gimped the YPVS to retard post 10K RPM, and the reeds are just a nice to have as they're cheap and easy to fit.

That's all I was getting at. I had/loved mine in stock trim for a good while before I started fettling with it.

Hi Andy!

Fab!

My Dad has a DT400B that he's been in the midst of restoring for about 8 years now.

I think he has all the parts, but he's since moved on to a Vespa and Lambretta obsession!

But I'm hoping he'll throw the DT400B back together and talks of passing it on to me 😛

This is predominantly a DT125R website, so knowledge about early models is very limited.

But of course we're all motorcyclist enthusiasts so we welcome any bike really.

Although, admitably, traffic has plummet in the last 12 months.

6Nm rings a bell 🤣 Haynes is invaluable.

Also got me thinking about that high mileage bike you had maybe it had a slightly diff sprocket setup or something or just a blessed engine my current one pulls so nice with a larger front sprocket I took the Keeway out for a test drive today and man its slow af compared to my DT rid it like a 2t lol trying to get it warmed up but rekon it only hit 40 max on my street my DT would happily hit 60 here hehe can't wait to get her mot'd but really itching to get the TZR running right and having a proper go of her before I decide to keep or part with her do really want the hat trick with a 90s TDR as well though a French import like you had would be the icing tbh

In my opinion is very stupid to stop termic vehicles and force people to reply them with electric vehicles because they are not the main cause of pollution. The governments worry about stopping an 70's year vespa, which can go for 30 kilometers with a litre. But nobody talks about the trucks that travel all day and consume more than every other vehicles. Or the ships and plane, which have no anti pollution law to comply with.
And even if we stopped all this vehicles, the pollution will not disappear, because just one country like China or India pollutes as much as Europe and North America together. We should stop to trade with the countries who are destroying the world. The thing I hate the most is that the people who protest against termic vehicles are the ones who daily buy stuff on shein, temu, aliexpress, thinking that there will be no consequence on the environment.
Unluckily, who make the laws don't want to understand this.
I hope people will become more aware of the real problem, and I hope the eco-madness stops soon.

thank you all for the warm welcome,
and tips.
be sure to keep you informed.
I see that you can find a lot of information here!!

Gorgeous color scheme!

@Calum

Don't be sorry, I think it looks great too, it's just they aren't my colours and they're way louder than I am.

However I've ridden the bike and now, and immediately realised I actually couldn't care less what it looks like. 🙂

Cheers!

Looks pretty tidy

I would have a guess and say, we aren't sure. This isn't an LC Forum it's the R and therefore there isn't a wealth of information on the LCs unfortunately.

@DTTOLATE

You’ll need a very accurate measurement of the bore top middle and bottom, you’ll need for this is a dial bore gauge, it’ll tell you the OD of the bore and tell you how round it is etc etc,

I send all my barrels and crank to Jim bailey (roadrunners) and he does it for me, I’ve been using him since 2017 for all my dts and mx bikes rm yz etc anything that has a steel liner which all mine was as they was sleeved, he’s very good and last time he did my dtr barrel I did 11k miles before stripping the bike for a restoration it still ran lovely.

I use Apico pegs on my 2005 DTRE.

I don't have any specific photo 😞

https://www.ebay.co.uk/itm/363326677211?hash=item5497f520db:g:XJkAAOSwoN9hQ58x&amdata=enc%3AAQAIAAAA4MQHTQDqQZgaSUbR41SECdVQC9SKHoZ9z0Rtfooo7bD18BAdcDgXW%2BrELfnZegRT49Egrp0E86gII4ALplrEMYUv7njMv8ZC8ThCO3WC%2B4KXoOgfjNAXX2OJr9HIYoqXBl6PYKMQYsNvGRwpBkBsstCO2ukRTZA1ifjTww0UoYGpwziz6BF%2FrNYI6GJ2TVPuPk73Uy78wq8jIXErR5%2FOGIQRlImPHyYaMjenabKbSXlPQUtUcWEzmxOpGgyEm%2BXgupwaskcDFwQ7fSJ8kG8X6R5qJerUCDoUpphyubbHgI%2B6|tkp%3ABFBMjNWp_KVi

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@cannodtx

Or Japan! Calum is a bit of a wizard with Japanese auction sites, talk to him 🙂 …

@giggscork

Hey bud! Ola! Please reply to my thread and let me know what your 91 dtr revs out to in gear while riding! It’s quite a relevant year for me to know 🙂

@old-boy-racer

Beats mine, 25 years 💀

@H22dan hi buddy, are you a Honda man in your spare time H22?

@markus-w ok, thanks. Hopefully someone will be able to answer my question even if it is an old bike.