Want my 045 AVE to Think It's An 056 Mag II -- Muffler Mod + ?

[bulletpruf]

Fellas -

Picked up a pretty clean 045 AVE from a member here several months ago and finally got around to it yesterday. It was inexpensive because it had no compression (60 psi). Picked up an NOS 52 mm P&C from another member here and swapped it out. Believe it's 81cc. And I'd like it to hang with the 056 Mag II that I got from another member.

So, I did the P&C swap yesterday. Nothing fancy, but I did delete the base gasket. I was rewarded with 198(!) psi compression.

On the muffler, I'm trying to figure out the best way to mod it. I could:

1. Redneck it and drill some holes in the front.
2. Hog out the exit at the bottom.
3. Cut it apart (Dremel cutoff wheel?) and hog out the internals.
4. Add an extra port. On the 056 Magnum there's a pipe that's used as an additional exit; I could fire up the MIG and try to add something similar.
5. Drill a big hole in the front and then put a deflector on top of it? This might be prone to damage.

What about the ignition timing? I'm thinking advancing it would give it a bit of a boost, too, but I haven't changed the ignition timing on any of my saws.

Thanks!

Scott

 

[jacob j.]

The 045 is a good old saw and now that you have a new top end it is so much the better. I would keep the muffler mod simple and just re-work the front exit. As you know mufflers are getting hard to find.

On the timing, that's pretty easy- the holes on the stator plate for those are slotted for the purpose of adjusting the timing. You simply loosen the screws and just rotate the entire assembly. How much gain
you get from that depends on where the timing is now. A lot of the old timers that ran those professionally had already messed with the timing. When I worked at the dealership we got a lot of 056s in that
were already aggressively timed.

 

[bulletpruf]

Thanks for the input, Jacob. Good to hear that timing changes are easy.

Scott