Spuds Porting and Tuning Thread

[spudulike]

The MS360 is pretty much ported, there is a significant bit of port widening that can be done, the muffler lends itself to having a larger outlet fitted and the base gasket can be left out and still retain enough squish.

 

Compression cold has gone up from 150psi to 165psi. I also tweaked the ignition by 5 degrees.

 

I have tried it and it can be leant on hard without stalling it so it has plenty of torque. I still have to tach it and give it a longer run up but it seems pretty good now.

[Eddy_t]

I need to check if it has a ignition govenor, i thought it did, by the way i do understand all the principles of how a carb works, even the compensator on the carb. I need to speak to my auto tune specialist to see just how it will react with a ported cylinder,

 

 

When do you lot shut shop for Christmas? I've snapped the muffler gasket!

[Eddy_t]

She's a beauty spud! What size pipe do you use on the muffler?

[adw]

Muffler gasket on what? Not sure what Christmas break is at Aycliffe.

[Eddy_t]

Muffler gasket on what? Not sure what Christmas break is at Aycliffe.

 

 

560xp!

[spudulike]

She's a beauty spud! What size pipe do you use on the muffler?

 

15.5mm O/D - just whatever suitable stock I have to hand!

 

Shutting for Christmas - will keep going until I am finished:thumbup:

[Ian Clarke]

Morning spud. What would be the cost and time frame for a 372xp to be ported and tuned?

 

Ian C

[div_h]

No engine mods just bar sproket and chain! I need these:thumbup: but not the bar

 

[wyk]

No engine mods just bar sproket and chain! I need these:thumbup: but not the bar

 

 

He is cutting hemlock(Tsuga heterophylla) in that vid - it is about as dense as noble fir at best. He is also using low pro chain on a narrow kerf bar. And judging by the size of the chips, the chain appears to have been massaged.

 

Here's a 357 slicing thru it like butter. I've fallen hundreds of them myself, and bucked even more.

 

 

Here's one a bit more mature.

 

[div_h]

He is cutting hemlock(Tsuga heterophylla) in that vid - it is about as dense as noble fir at best. He is also using low pro chain on a narrow kerf bar. And judging by the size of the chips, the chain appears to have been massaged.

 

Here's a 357 slicing thru it like butter. I've fallen hundreds of them myself, and bucked even more.

 

 

Here's one a bit more mature.

 

 

 

What do you mean the chain maybe messaged