Spuds Porting and Tuning Thread

[Lumberwolf]

I finished it an hour ago! The saw itself cuts like it's on speed, but it's ported and has a muffler like a colander to stop it burning pistons.

My boss, who traditionally is against porting, wouldn't put the saw down!

 

Quality, I'm gonna have to get mines done at some point. I'll clip the heels on one of my chains over the silly season too if I get the chance.

[Eddy_t]

Right, my verdict is it spits some chip out! It's hard to say if it was worth it, maybe for racing, but the effort required when it'll be used for day-to-day cutting, I highly doubt!

[Lumberwolf]

Right, my verdict is it spits some chip out! It's hard to say if it was worth it, maybe for racing, but the effort required when it'll be used for day-to-day cutting, I highly doubt!

 

Aye I'm not too fussed about it being a few minutes quicker by the end of the day. Just want to see what it's like really.

[Eddy_t]

560 time!

Stock air intake, can't be raised much, as the ring stops about 1mm above when the gasket is removed, but it can be lowered and widened a little (but not too much or it will free-port from the impulse channel!

Stock exhaust port, this can be widened!

As I said, tiny! My thumb has almost blocked it, couldn't cover it all whilst trying to take a picture!

Stock lower transfers, I'll blend these so it's smooth rather than a step.

 

I spent ages trying to get the carb boot off, but it's actually rather easy once you figure it out, screwdriver behind the metal plate pops it off in one took longer than I'd like to admit!

[MattyF]

Eddy do you recon this cylinder is shot or could the damage be ported out?

[Eddy_t]

Eddy do you recon this cylinder is shot or could the damage be ported out?

[ATTACH]172713[/ATTACH]

 

 

That's the strato induction port, I shan't be touching mine, but it could, I don't know what increasing the strato duration would do to the saws running.

Worth a shot maybe before forking out on a new cylinder.

[MattyF]

Maybe worth asking on AS to see if any ones done it... It won't catch the piston ring if you do?

[spudulike]

Eddy do you recon this cylinder is shot or could the damage be ported out?

[ATTACH]172713[/ATTACH]

 

Matty, the aluminium is bruised, my recommendation would be to grind it flat and not open the ports to get rid of the damage!

[Eddy_t]

Maybe worth asking on AS to see if any ones done it... It won't catch the piston ring if you do?

 

 

The ring crosses the top half of the port, not the lower portion.

[Eddy_t]

Matty, the aluminium is bruised, my recommendation would be to grind it flat and not open the ports to get rid of the damage!

 

 

There you go matty, spud has spoken! I'd be more inclined to do that!

It was one of my thoughts, but as I couldn't physically look at the cylinder, I couldn't see how damaged it was.

Is that the cylinder you originally killed?