New purchase 1990 dt125r

[ukchad]

Had a lot of owners, but I would guess garaged, yeah.
Was def kept in a garage from the bloke I brought it from for the last 5 years.

Still has some niggles that I will tackle one by one,
Got hot again today, so going to check coolant levels (only changed 2 weeks ago)
Back brake's pretty rubbish and spongy
Poor electrics mean that the headlights pretty much useless in dusk/night time
Badly resprayed tank means petrol lifting paint

I don't know anything about Engines/electrics but I'm practical enough to learn - Haynes manuals arrived to help me through

[terry.tz]

@ukchad sound like a man with a plan :simple_smile:

[terry.tz]

get that build thread up

[ukchad]

Actually had a go at turning the power valve around today - 180 degrees so the top of it was flush with the manifold.

Took it out and I thought I had knackered it.... until I hit 7000 rpm OMG

[Jens Eskildsen]

Bike getting hot could be headgasket.

[terry.tz]

@ukchad mines wide open it's a bit annoying some times but ye its fun
@Jens-Eskildsen ye people put them on the wrong way round right

[ukchad]

Yeah, the head gasket is on my radar.
The oil looked ok when I changed it - so did the coolant, but I will check the consistency tomorrow.
How big a job is it to do the head gasket for a garage? Ball park cost? I think that may be a stage too far for me to do yet.

I actually put the power valve back to original position as the exhaust got very hot very quickly (smoking from end after I stopped after a 5 min blast)

[declan]

@ukchad might aswell throw a new piston in there while our at it

[oldman]

Head refurb really straightforward, just get a decent gasket set, take your time and follow the manual. Did mine while I had the engine out, takes no time really. Nice bike, gotta save these old ones

[terry.tz]

@ukchad head is easy best done with a torque wrench thou if you're willing to buy one

[ukchad]

Another tool to purchase, but I do love having them.

[terry.tz]

@ukchad said in New purchase 1990 dt125r:

I actually put the power valve back to original position as the exhaust got very hot very quickly (smoking from end after I stopped after a 5 min blast)

haha I would say leave it open its boring closed I could fall asleep riding if it was not wide open but I will say I have seen threads where there is a bit of controversy so think it's best you know how your bike runs first so you will tell if it rich or lean through the rev range

[declan]

@ukchad

Another 1990 welcome! Ignore the sticker bomb and the rear wheel got a puncture in my wheel and chipped paint underneath the sticker bomb lol

[terry.tz]

@declan coming on that is Declan

[oldman]

Here's one I prepared earlier !
0_1502570553952_20170715_131805.jpg

[ukchad]

Is it normal for the exhaust to heat up so much then, when the power valve is fully open?

Also died a bit when I kicked up into 6th, ran out of power (maybe wasn't high enough revs)

[ukchad]

@oldman soooo clean

[declan]

@ukchad coming from 4 stroke this was crazy for me I have full functioning pv) my muffler gets too hot to touch

[declan]

@terry-tz hey thank you buddy nice hearing that much appreciated but a lot to go yet

[terry.tz]

@declan good to know there's more to come