DT125R FORUM

As mentioned the diamond shape fits the pulley with the square / rectangular end as well

The grooves in the power valve aren't for O-rings, instead these fit into the ends caps as you cant refit the valve into the cylinder with O-rings in the grooves 😉

@jimmydc98 As @jimmydc98 says you would be far better off getting it TIG welded, as that would be a much stronger and more durable fix. I've used several JB weld epoxy's / adhesives and have never found them to be any good. They do not seem to stick or repair stuff as stated, so I would steer well clear of them. I have tried this stuff tho and can recommend it;

https://www.ebay.co.uk/itm/VersaChem-Steel-Weld-Epoxy-Black-2hr-Set-25ml-47709-VC-Automotive-Industrial/362460351914

The TIG welding would be your best bet tho IMO. 😉

My bike was stolen by someone I used to live with and they crashed it into a car without a helmet write it off bent off the frame and front end I had to cut the old frame just to get the engine out. that why I brought the frame and done all this but my insurance is over 500 now I payed 225 for my first year at 17 I’m now 21. I was a bit of a melt for only getting 3rd party but the police had to be called to help find where he’d left my bike, when it went to court all he got was 70 community service and I didn’t get any compensation as his dad had promised me but really they were longing me off hoping they didn’t have to pay

@jimmydc98 If you had a chuck big enough you could machine it in a lathe.

But it does sound like you would need to send it away.

To be honest with you, it's really not that expensive. It cost me £80 to get my Starlet head chemically cleaned and skimmed.

@2Stroke4Smoke No, that sounds like the powervalve retarding to me. It should pull hard to the red line when derestricted.

The ignition on the DT is a reliable tune. An aftermarket ignition (for me) didn't do so much to the top end as it does to the mid range. Much punchier throughout the rev range. No doubt peak power was increased, but it was definitely the midrange I was impressed with.

I just bought a Zeel for my RS from PJME at a cost of £300.

I paid £160 plus VAT for my DT one years ago.

It's a worth while upgrade, great place to start if you're looking for extra ponies, but don't compare it to a KTM as it simply ain't that.

I don't know how to find the bushes can anyone tag me to the page where I can or give me the bush dimensions so I can find them on simply bearings thanks jimmy

Fahron Engineering.

I believe his name is Ron Philips, based in Linby , Nottingham. He usd to tune and make his own kits for the RD400s, he sorted my barrel and head when the head got warped and sorted the squish band out ect. Not missed a beat yet.

@stinkwheeler or fowlers have them online cheap enough

Yeah it's a normally open circuit and you have to close the circuit for it to work.

0.30 - 0.45

Doubtful, I don't have the specs but rings are cheap enough for either.

The rpm isn't magical at all. Works exactly the same way as the speedo does. It measures flux, usually one pulse per ignition and translates that to rpm.

@MIGHTYMAN said in Power valve servo:

@AndyYam it was £65 delivered on the other thread but I won't tell! 😂

Cheers, im that lazy i couldnt be bothered to click back! £65 it is!

Engine will drop straight in correct.

However it won't be as simple as that as you'll need the correct CDI.

The rest should be okay other than you won't be able to use the starter motor. There will not be the correct plug for that so that will cause issues.

You can't swap stator or genny over cause the crank is different.

So it will be a bit of effort getting it running.

But it will drop straight in

I have always used this stuff and it hasn't let me down yet
Castrol Power 1 2t, its usually £25 a liter but you can always find it cheaper on amazon

https://www.amazon.co.uk/Castrol-Power-Racing-Engine-Oil/dp/B004I5R35S/ref=sr_1_1?ie=UTF8&qid=1466763110&sr=8-1&keywords=power+1+2t

I know this is oldish but I assume you found the sticky at the top of this section.

How would I go about that then is there any videos or anything