Motoscrubs.com

Eldert wrote:drainplug threads can be repaired but the M22 timesert kit is very expensive .
about 500 dollars give or take .

Eldert

Hi,

I used several BaerCoil thread repair kits in the past. They are of good quality, not too expensive: M22x1.5 is available:
https://baer.tools/en/baercoilbaerfix/baercoil/thread-repair-kits/m-mf/1646/baercoil-thread-repair-kit-m-22-x-1-5?c=1450

cheers Hans

Thanks for replies.
22 mm x 1.5 mm pitch Powercoil thread inserts available on Amazon about 70 UK pounds. Includes five inserts. Will purchase after engine strip.
Have found and ordered replica 175TS rear plate holder and light on eBay at reasonable cost.
Today straightened left footrest and attempted to remove seized rear brake lever from shaft. soaked with plusgas will leave for couple of days.

George wrote:I wonder why Ducati made two engines with only 15 cc difference. 160 cc is a strange capacity, would that be to do with Spanish age/learner restrictions or perhaps using up old stock when 125 discontinued.

I can’t speak for the Mototrans products, but here’s the story as far as Bologna was concerned:

The 175 engine was made from 1957 though to 1960. Known as the Type A engine, it was also produced in a 200cc version.

In 1961 it was dropped in favour of the Type B engine which incorporated a number of significant modifications. This engine was conceived as a 250, but was also produced as a sleeved-down 200cc.

In 1964, Berliner asked Ducati to produce a model which they could pitch against Honda’s recently announced 160cc Hawk. Rather than sleeve-down (yet again …) the 250 Type B engine, Ducati bored out its 125cc engine, up till then produced mainly for the domestic market, to produce the 160 Monza Junior.

At Tom Bailey’s concession, the Monza Junior was the best-selling bike in 1965, with insurance being around 25% cheaper than for a 200cc.

Interesting post. My engine number indicates early 1960s mototrans 125TS. Will have to investigate further when dismantling. As Jon mentioned in earlier post might be 125 with 160 top.

Couldn't find any more info about why Ducati made the 60's 160 but in 1977 the speedlimits were cc-related : under and over 150 cc.
It could be that there were other rules, Insurance or taxe related, that prompted them to make smaller or bigger displacement bikes.
Cfr : the 239 specially made for the French to avoid their "max 240 cc" rule.

ciao
ducadini

Have received my UK registration V5c certificate and can start on restoration. I Will be removing and cleaning parts for painter first and then sorting wiring followed by engine investigation. Be good to find out what engine I have. Keep me from getting bored at home waiting for things to calm down over virus pandemic.

I'm working on a newly-acquired Mototrans 250; on Saturday I thought that I would replace the broken oil pressure switch with a spare, only to find that the one in the bike was glued in place. I then found that the end cap was unmoveable; the cam has the oil flow restrictor in place, so a rod cannot be passed through it, but this wouldn't have worked anyway due to the hole in the end of the cap, therefore the only way to get the cap off is by tapping the camshaft out. This presented a problem because the nut had been done up by a gorilla and really took some force to get undone, but finally I managed it, and of course I couldn't get the rockers out.

The gasket face of the cap has been ruined in the past by someone banging a screwdriver in there, so I don't know if it will be oil tight, and I'll have to fill in the redundant hole with chemical metal. Funny how a ten minute job turns into a two day one!

Would that be the 250 for sale in Maldon. If so I was thinking about buying it but went for something a bit older.
When working on older machines I expect the worst and any easy jobs treat as a bonus.

Yes, the Maldon one. I kept looking at it and mulling it over. It seemed reasonable when I looked at it, but has turned out to be a real mess and I haven't delved into the engine yet.

Do Mototrans have an oil pressure switch?
How?
Where?

Graeme