markwemple
markwemple UberDork
4/29/18 11:45 a.m.

Found a very high mileage 1995 900ss/cr with sp front brakes and lowish compression for low money ($500) By high mileage I mean 107k!! So it needs a rebuild or a replacement. I've never heard of a duc with over 100k (I know they exist, though) These 2v a/c engines are very stout (probably ducs best) so do I re-ring and het the heads done or just buy a low mileage used or do a 944 conversion or p/c set or........

Rusnak_322
Rusnak_322 Dork
5/1/18 9:00 a.m.

I love the look of the 1/2 fairing on the CR. You could probably pick up a low mileage motor for less than the cost of a rebuild kit. Would a 1000cc DS motor bolt in?

markwemple
markwemple UberDork
5/1/18 9:07 a.m.

I would think that any air cooled motor would work. Hard to find, though. I've been looking. These engines seem to last a looooong time when well maintined. There are ones with over 250k. One good upgrade would be FCR 41s. The mikunis just aren't great, from what I'm seeing. Hard part is that the FCRs are well north of a grand. And hens teeth in the used market.

markwemple
markwemple UberDork
5/3/18 8:30 p.m.

After an 11 hour drive, it is now safely at my house.

nutherjrfan
nutherjrfan SuperDork
5/4/18 12:14 a.m.

In reply to markwemple :

FTW.smiley

wheelsmithy
wheelsmithy Dork
5/4/18 8:03 p.m.

Coool

 

markwemple
markwemple UberDork
5/4/18 8:15 p.m.

Thanks. Is there a theme of bringing back to life forgotten Ducs?

markwemple
markwemple UberDork
5/4/18 8:16 p.m.

My 1st project is head studs and an inspection of the heads and jugs.

Cooter
Cooter HalfDork
5/5/18 6:20 p.m.

I'm all about the 944 upgrade, myself.  

markwemple
markwemple UberDork
5/5/18 7:15 p.m.

Big difference?

 

Cooter
Cooter HalfDork
5/5/18 7:21 p.m.

Enough to notice. The cams are also upgraded, and there is different map on the computer. (It's a 2000)

markwemple
markwemple UberDork
5/5/18 7:36 p.m.

Is it fuel injected? If I do 944s I'm thinking a modded st2 set up.

Cooter
Cooter HalfDork
5/5/18 8:41 p.m.

Yes, it is. 

markwemple
markwemple UberDork
5/5/18 8:46 p.m.

What 944 kit did you use?

Cooter
Cooter HalfDork
5/5/18 8:50 p.m.

Bought completed nearly a decade ago, unfortunately. It was too good of a deal to pass up. 

pres589
pres589 PowerDork
5/5/18 9:09 p.m.

Cooter, that bike looks fantastic. So what is it exactly? I don't speak Duc very well so I don't know what a 944 conversation is. What did the frame leave the factory as? 

markwemple
markwemple UberDork
5/5/18 9:15 p.m.

It's a 2000 900 monster. The 944 kit is a 944cc kit. The Duc ST2 is a water cooled engine but the pistons and cylinders can work in an air cooled 2v with the coolant passages closed and the oil passages opened up.

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