Dolmar CT

[Petesos]

Hi all

Asking for help from anyone

I run an old Dolmar CT 115 and it is a great old saw but recently she has gone down on me with a scored head and piston and I was wondering if anyone knows

where I can get a new head / piston and rings I know she is an old girl but I dont like throwing this old kit out as I suppose I am a bit of a Traditionalist .

Any help would be Appreciated

Cheers all

Pete

[miker]

dolmar ct, an old beastie,keep your eyes on ebay usa, occaisonally come up on there, but rare as rockin horse poop these days

[Petesos]

Eyes are on ebay

I was wondering if there is a company in this country that could rebore it and put new rings and piston in it ??

Pete

[spudulike]

Eyes are on ebay

I was wondering if there is a company in this country that could rebore it and put new rings and piston in it ??

Pete

 

The bore is chrome plated aluminium, there is no way that can be rebored. Put a pic up, is it really that bad. Most of the time, these can be saved if they are not too bad, The ones that I have had most trouble with are the real high revving Huskys, the 550XP and 346XP have a tendency to score the cylinder as well as transfer aluminium.

 

If the bore is fixable, the next job is to try to get a similar piston and then modify it to fit!

[shavey]

this saw was the model before the sachs dolmar 166 it has the same size piston as the 166 it was in production until 1990 there are a few pistons for sale for the 166 so you could be lucky

[Petesos]

Hi Again all

I have took the head off completely and to my surprise the head is in good nick

with only a flake of the piston So i think a slight buff up with a honer should remove it .

The Piston on the other hand looks well shot as the rings are pinched in to there resets So a new piston and rings and small end bearings are the order of the day for this ole girl.

Does anyone know a company I can get the bits from

And are you sure the piston is the same as a 166.

Thanks to all

 

 

 

[spudulike]

get rid of any aluminium by cleaning it with solvent and abrasive paper followed by acid or alkali to get rid of it and then use a very light hone if needed.

 

The piston will be an issue due to its domed top - unusual with modern saws. you will need to match the dome height, crown to pin centre and the height of the piston - all are critical to making compression and timing. The diameter will obviously also need to match!

[shavey]

i have just been checking my parts manuals and the sachs dolmar CT had three piston variants 115 132 100 115 132 101 115 132 102

the sachs dolmar had one piston listed 166 132 100

here is a photo from a dolmar man in the USA

PISTON ON THE LEFT IS 166 PISTON ON THE RIGHT IS A CT

Edited July 26, 2014 by shavey
CIDER SPELLING

[Petesos]

Hi Shavey

Can I ask

Do you know of any dealers in this country that would have a piston and rings

the piston size looks like 54 or 55 mm

Petesos

[miker]

just looked at my 153 piston, thats 54mm,reckon, ct/166 would maybe be a bit bigger??ill ask at my dealers when im there next, they may have a scrapper in the store