ms660 ....more power???

[geoff]

STIHL MS660/066 56 MM BIG BORE CYLINDER KIT NEW NISIC COATED 1YR WARRANTY | eBay

 

Not that expensive. This kit is made by Hyway and is superior in quality to the oem one that was on mine...

The seller (Tesgol) will give you the very best customer service available anywhere should you have any issues.

 

A very useful link in general, thanks!

[spudulike]

I'll update on the "bench" thread when I have more time, short version: my fault, company paid me £150 for the scrap saw...

 

I did wonder but didn't want to presume - always worth checking crclips under a bright light and magnifying glass IMO.

 

You live and learn - at least the £150 was a very fair payout and will help will help with the new saw:thumbup:

[spudulike]

Yea Steve . I think modding OEM parts is best and best left to you matey ! Talking of which any room for my 395 yet ????

 

Give me a week or two, on holiday at the moment - what happened to the sun:thumbdown:

[Hedge hunter]

Give me a week or two, on holiday at the moment - what happened to the sun:thumbdown:

 

 

so you gunna let me know how much yer takeing off the head ports then.....

[spudulike]

so you gunna let me know how much yer takeing off the head ports then.....

 

Just measure the piston skirts as they will be your limiting factor and not the maximum allowable size as would be the case for a non windowed piston as fitted to the 346 and 357 husky.

 

The piston should cover the port by a safety margin, not sure if the base gasket can be dropped or not so you will need to measure the squish, the transfers should allow some modification, the uppers will be limited by the ring ends and the lowers can be opened up as can the piston windows.

 

The rest will come from opening up the muffler.

 

You may like to think about how you are going to bevel the ports - if you don't then you may well snag a ring.

 

It is all easy....if you have done a few before:thumbup:

 

PS - the rest you will have to spend time learning as I have:sneaky2:

[Hedge hunter]

that seems about right.....i ported a V8 some years back but i would expect the saw head to be a bit finer on tollerance....

 

i guess a 90 degree type of dremmel will do the ports so the rings are smooth on the way past how ever ....

 

i think i will take apart my dead 362 husky and play with that for a test....the 660 is quite new and has to earn for a few years so i dont want to total it lol...

 

thanks..

[spudulike]

that seems about right.....i ported a V8 some years back but i would expect the saw head to be a bit finer on tollerance....

 

i guess a 90 degree type of dremmel will do the ports so the rings are smooth on the way past how ever ....

 

i think i will take apart my dead 362 husky and play with that for a test....the 660 is quite new and has to earn for a few years so i dont want to total it lol...

 

thanks..

 

Grind from the outside in and use diamond files to bevel, the transfers are worked on from the inside!

[Hedge hunter]

Grind from the outside in and use diamond files to bevel, the transfers are worked on from the inside!

ok im sure ill work it out once its apart....however if i get stuck ill find ya ...not too far away...