DT125R ARCHIVE

endurodt125 · DTR Respected Member

RE: 1999 yz/dtr 170cc athena hybrid build

Calum122 · Guru

I think they're poo kits, but for greenlaning I think they are good. I think your modifications will just make it awesome, and I really hope it does.

FunkeyMunkeyDavid · Guru

just a thought bud...

can you post up a pic of the radiator plumbing on your bike?

only reason i ask is yours is running hot.

mine ran so hot it killed the water pump...

defo fudged my plumbing on mine lol

had the pipe from the pump running to the wrong rad i think confuse

endurodt125 · DTR Respected Member

Bikes in bits at the moment so I quickly did a litlle drawing ,it's just one big loop so I can't see how it could be wrong ? I was worried maybe the pump wouldn't handle the extra water? But I've noticed a lot of people using twin rads? I'm not running a thermostate but I always give it a bit extra time to get to running temp ...it seems to be fine when I'm moving At a consistant 120 but as soon as I stop it raises 140+

FunkeyMunkeyDavid · Guru

mines plumbed the same,also running no thermostat...

can't get my head round it.

two rads,each much bigger than a dt radiator yet twice the engine heat lol

probably because i thrash it in 2/3rd gear all the time on a short track?

Calum122 · Guru

How hot is it getting?

FunkeyMunkeyDavid · Guru

hot enough to notice the difference on your legs when riding it lol

when i pulled it apart the engine was cooked...

will see how it runs once it's rebuilt i suppose.

the same engine ran fine in a dt chassis though,that's the bit i don't get?

endurodt125 · DTR Respected Member

On my standard dt 125 r I can hold my hand on the barrel after a long ride on this one it burns my hand after about 10 mins so it's deffiantly overheating :( don't really want to have to bodge the standard rad on

endurodt125 · DTR Respected Member

But my jetting was wrong head gasket turned out to be leaking slightly and exhaust was blowing a bit at the stub (was working out the kinks lol )...so I won't know till I put it all bk together

endurodt125 · DTR Respected Member

Bought this on the weekend so clean and original ,had been in storage since 2003!!

Calum122 · Guru

Nice. How come?

endurodt125 · DTR Respected Member

I just wanted a nice original one for day to day riding ,keeping the yz/dtr for the weekends I also have a 1992 in bits that I need to restore at some point :)

endurodt125 · DTR Respected Member

The first owner lost the keys and lost interest so he stored it then the guy I bought it off bought it of him and gave it a light restoration replacing all bolts etc with genuine parts ,got the mot certificates and service sheets with the mileage on up to the time he stored it ,it's only done just over 10k the only things not original was the pipe and side panel stickers but it came with the original pipe it's so so clean and genuine ,I got it from a old guy who has many 2 strokes lc 350s etc so I got no reason not to belive him ,well chuffed ....any who sending the 170 barrel off for a replate today so won't be long till that's back together ...watch this space lol!!

-- Edited by endurodt125 on Wednesday 25th of March 2015 11:12:37 AM

FunkeyMunkeyDavid · Guru

nice find buh.

that's a tidy looking dt biggrin

Calum122 · Guru

Eyes peeled mate. You've probably the most innovative person on this forum as of late. Not much else exciting going on :(

endurodt125 · DTR Respected Member

Bit longer than I expected :( oh and I put some pro tapers and a disc guard and tail tidy on the new one ,kinda wish I left it standard now Thoe so probably going to change it back lol

-- Edited by endurodt125 on Monday 30th of March 2015 03:12:11 PM

Calum122 · Guru

Looks sweet mate.

My advice. The handle bars on those standard are like cheese. Always bend. If it were me I'd leave them on. And then if you want the standard look after fit the old ones on.

Just my two pence.

Yeah replating is a ball but these things take time.

endurodt125 · DTR Respected Member

Yer might just leave it ,just don't want to start ducking about with it to much cz I don't want to devalue it the idea was to just leave it standard and just focus on the other one but I couldnt help myself aha

-- Edited by endurodt125 on Monday 30th of March 2015 06:00:28 PM

endurodt125 · DTR Respected Member

how the hell do i upload full pictures? lol

endurodt125 · DTR Respected Member

Got the 170 cylinder back langcourts done a brilliant job highly rate them ,I've started putting it together all I've got to do is get a torque wrench and check the squish ,hopefully just going to remove a base gasket to get it right if not I'll have to get it skimmed

-- Edited by Calum122 on Friday 17th of April 2015 08:55:42 AM

Calum122 · Guru

You can post photos inline instead of making them slide show if that makes it easier. Or use photobucket account

endurodt125 · DTR Respected Member

Cheers man

scrimsmustang · DTR Mechanic

endurodt125 wrote:
Bought this on the weekend so clean and original ,had been in storage since 2003!!

That was a nice find, how much was it if u don't mind me asking.............

-- Edited by scrimsmustang on Friday 17th of April 2015 01:17:15 PM

endurodt125 · DTR Respected Member

It wasn't cheap that's just put it that way

endurodt125 · DTR Respected Member

Measured the squish ,it was 2.4mm lmao way out ,the 2 base gaskets didn't squash down as much as I though they would so going to skim this plate down a tad

endurodt125 · DTR Respected Member

come to realise that the head gasket is too thick resulting in a massive squish clearence which is probably another reason why these athena kits are so ****e ,im probably going to have to run it with a positive deck height just to get it the clearence right, also The low surface area means that there is less area to absorb heat from combustion and this helps to keep the head temperature down which would explain why its getting so hot it will also help to stop detonation ,corr this builds been a learning curve haha

Calum122 · Guru

Would it be worth getting the head and cylinder machined to take an O-ring?

Mate, by the sounds of things you have surpassed me on tuning? The amount you're learning on this is incredible.

endurodt125 · DTR Respected Member

haha my old mans been building bikes for 40 odd years and he dont even have a clue what im on about lol ,i was thinking about it dude but i really want to just get it done and running it with a positive deck height seems like the easyiest option it will only be by a small amount ,if not ill have to get it oringed ,been doing some research and it seems quite common so im pretty positive ..im just going to see what ive got to play with then measure the squish again and just go from there

endurodt125 · DTR Respected Member

Engines done :) just got to start putting it all togther

Calum122 · Guru

Yes mate, this is going to be sick :D