Author Topic: So while I was keeping my eye open for a nice 175, I found this....  (Read 5271 times)

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Offline Andymann

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Re: So while I was keeping my eye open for a nice 175, I found this....
« Reply #10 on: June 15, 2016, 05:25:37 PM »
At least with the 200 it was stuff you would expect, like plastics and graphics.

I can get a stand for the 125.  But the bolt holding it on is discontinued  ???

The rubber damper for the tank - discontinued.  NOS off ebay - €40  :o

Chainguide - a wear part.  Discontinued.

Indicators - they are still available - €38.  Each.  I need 3......

Offline 2fITy.J

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Re: So while I was keeping my eye open for a nice 175, I found this....
« Reply #11 on: June 15, 2016, 06:47:48 PM »
Sidestand bolt was also fitted to all XT250/350's between 1980 and 2000.


Bit cheaper maybe....
http://www.partzilla.com/parts/detail/yamaha/YP-17F-83310-10-00.html

A bike in the bush is worth two in the shed!

BMW-BSA-Ducati-Honda-Kawasaki-Lambretta-Matchless-Norton-Suzuki-Triumph-Vespa-Yamaha.

Dirty Dozen '13 DR650SE - '90 DR650RS - '82 IT465J - '82 IT250J - '80 GT80G - '77 A100B - '76 DT100C - '76 TC125 - '75 TM75 - '73 MX80 -       '73 TC100K - '69 TC120-1

Offline Andymann

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Re: So while I was keeping my eye open for a nice 175, I found this....
« Reply #12 on: June 15, 2016, 08:02:03 PM »
Luckily I'm just going to turn this into a nice run-around (providing the motor isn't about to self-destruct) so I'm not too worried about using parts off other models.

A lot off the air-cooled 125 which we still get is very similar, so i'll just opt for those. 

Offline Andymann

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Re: So while I was keeping my eye open for a nice 175, I found this....
« Reply #13 on: June 20, 2016, 07:46:52 PM »
Well after being a little disappointed that the bike in the photos didn't look like the bike I had committed to buying (and bought), I set about this weekend having a good look to see if I had been too hasty....

The guy wasn't kidding - every single wire, nut and bolt was individually marked, so for an OCD bloke like me it was brilliant  ;D He had even marked LHS and RHS bolts....I connected the new battery and kicked it over - was relieved to see a nice fat blue spark.  Things were looking promising!  I poured some 2T down the plug hole in anticipation that I would start it soon.

He mentioned that the carb was "broken" and that not to worry he had a spare, but when I looked at the condition of the spare (off an AG175 I subsequently found out) I dismantled the "broken" carb and found a blocked pilot jet and a float level way out so I reckoned that must of been the problem.

So after removing the now famous golf-ball (a Top Flite I might add), checking that there was no crap which had fallen down the inlet, I poured some oil down the plug hole and kicked it over.  All sounded good so I added coolant, mixed some 2T with the petrol and gave it a few kicks.  I wish I could say it was immediate, but close enough, and about 10 or 15 kicks later it started....

Two things were apparent though - while the engine itself sounded really good, on idle there was a really nasty clatter coming from behind the water and oil pump.  And it also felt very very rough. On all my bikes I replace the black OEM oil 2T oil line with a transparent one so that I can see the oil moving in the pipe, and in this case, I could see the oil wasn't coming through.  Not good.

It wasn't getting any better so I figured off with the clutch cover.  Was going to do that anyway to set the clutch so it wasn't a major issue.

What I found was quite interesting.  At some stage someone must have replaced the crank seals and not tightened the primary drive nut.  The primary drive gear had come loose, sheared the key, and both the primary drive gear and idler gear which drives the balance shaft were spinning away freely.  The nut and key was scrap, and the thread on the end of the crank wasn't great, but the gears were still fine.

Into my box of DT200 spares, and lo and behold the nut, key and possibly crank looked identical.  So I pillaged the nut and key off my scrap DT crank, applied loads of Loctite to the gear and nut and tightened as much as I dared (about 50N.m, recommended is 75N.m).  Realigned the balance shaft, set the clutch, and put it all back together.

This time second kick and I think I have rescued a freshly rebuilt DT125 and found the reason why the guy sold it  :D

I have no idea how long the Loctite will last, or how long the motor might have run without the oil and water pump working but I will keep and eye on it, and if it comes loose again, well I have to split the motor to fix the thread on the crank, so I don't really have anything to lose!

So now it's new tyres, a few grommets, levers, a new ignition, and one or two other odds and ends, and I reckon I will have a brilliant little bike.

I reckon for around a total of R8000 (AUD600) it was a steal.....


Offline 4V5

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Re: So while I was keeping my eye open for a nice 175, I found this....
« Reply #14 on: June 21, 2016, 11:52:49 AM »
Very cool bike and hopefully a great save on the crank.. Keep an eye out for a spare crank just in case... As I believe the 200 crank is larger and doesnt fit.
IT465x4 IT400C IT175F YZ465G YZ250C YZ250WR XJ650G RD350LC RD250LCx5 DT175Nx3 TW200x2 DT200L DT200R RT3 RX100G GT80F YZ80L PW50J KH250B1 KZ250D1 PE175C TS250ER TS185ER AG175B AG100

Offline Andymann

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Re: So while I was keeping my eye open for a nice 175, I found this....
« Reply #15 on: June 21, 2016, 04:21:52 PM »
Agree - I would be surprised if the 200 crank fits.

Worst case, I have access to a Training Centre with a bunch of brilliant Apprentices.  I'm sure we would be able to make a plan!

Offline 4V5

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Re: So while I was keeping my eye open for a nice 175, I found this....
« Reply #16 on: June 21, 2016, 04:26:17 PM »
I wanted to build my DTLC with the 125 crank and bottom end with the 200 top end... makes it a 175.. I like 175's ;)

IT465x4 IT400C IT175F YZ465G YZ250C YZ250WR XJ650G RD350LC RD250LCx5 DT175Nx3 TW200x2 DT200L DT200R RT3 RX100G GT80F YZ80L PW50J KH250B1 KZ250D1 PE175C TS250ER TS185ER AG175B AG100

Offline 2fITy.J

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Re: So while I was keeping my eye open for a nice 175, I found this....
« Reply #17 on: June 21, 2016, 04:38:51 PM »
Stroke of genius.  ;)
A bike in the bush is worth two in the shed!

BMW-BSA-Ducati-Honda-Kawasaki-Lambretta-Matchless-Norton-Suzuki-Triumph-Vespa-Yamaha.

Dirty Dozen '13 DR650SE - '90 DR650RS - '82 IT465J - '82 IT250J - '80 GT80G - '77 A100B - '76 DT100C - '76 TC125 - '75 TM75 - '73 MX80 -       '73 TC100K - '69 TC120-1

Offline Andymann

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Re: So while I was keeping my eye open for a nice 175, I found this....
« Reply #18 on: June 21, 2016, 04:43:51 PM »
I got excited there for a moment, seeing as I have DT200 barrels and heads lying in my garage.  But they are from the later Crankcase induction engines.  Damn......

Offline fred99999au

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Re: So while I was keeping my eye open for a nice 175, I found this....
« Reply #19 on: June 21, 2016, 06:54:28 PM »
Quote
Stroke of genius.

Or de-stroke as the case may be.