Spuds Porting and Tuning Thread

[spudulike]

Had some time on Monday to play with my 066, this is the one where the Red Eye coil failed and I fitted an aftermarket MS660 one plus it has had the full works and an expansion pipe fitted. I had tried it and it was a bit flat TBH.

I re-measured the ignition advance, this is done by fitting a timing wheel, marking the flywheel and marking the crankcase or fitting a scale like I did with TDC, 10, 20 and 30 degrees on it. You then fire up the saw and strobe it with a timing gun.

Bugger, it was running at around 40 degrees rather than around 30 The spec states 27.5 - 32 degrees.

Refitted the flywheel and double bugger, it was now at around 50 degrees The scale needs to be re-graduated each time the flywheel is moved on the crank but it was 50 and kicked like a mule. I have fitted a decomp - a Husqvarna large holed one that makes it a little easier to spin over.

Did the flywheel move again, there is no key on the crank and adjustment is a bit hit and miss but the scale and a piston stop helps. The measurement this time was 30 degrees and checking a normal MS660 was 25 degrees so am happy with that, the extra advance will give more torque and a brief go showed it seemed to go much better.

[htb]

Neighbours will love that steve

[spudulike]

It is about the loudest I have, fitted the tail pipe to quieten it and it worked a treat

[htb]

Sound like a fs1e on steroids then

[spudulike]

Bit more Red Rocket than FS1E! Bloody loud, think it is crisper than the McCulloch 595 and 1-40s I have that pop out flames!

[wisewood]

Has anyone ever ported a leaf blower?
I’ve got an old echo es2100 that would benefit from a boost [emoji1]

[Stubby]

55 minutes ago, wisewood said:

Has anyone ever ported a leaf blower?
I’ve got an old echo es2100 that would benefit from a boost

I think Spud has ...........Think it was his own .

Edited January 9, 2018 by Stubby

[spudulike]

Yes, my own BG85, goes like a good one and has plenty more clout than standard

[Stubby]

There you go !  thought so

[mitchel]

you have any videos of the 660 with that exhaust running?