Building a ms460

[MG porting]

Ok here you go.lol. my port work definitely not the prettiest but gets the job done. in case you all are wondering what that red stuff is on one of the pictures yeah that's my blood.

 

[NPKenny]

Would you please add some commentary to the bridge location, as opposed to the boost port style used in some 460s and hybrids?

 

[MG porting]

Would you please add some commentary to the bridge location, as opposed to the boost port style used in some 460s and hybrids?

When you do a big port it's typically best to have them going twords the exit of the upper transfer this helps promote more air and fuel to the intake side of combustion area that's the best way I can explain. someone else with a bigger brain can jump in and give you a better explanation.

 

[MG porting]

Checking back on my notes, I put together a hemi head 460 with the following #s (no base gasket): Sq .018, Ex 105, Tr 127, In 75. I had planned to port this jug, but it ran so darn well w/o any porting I left it the way it was and the Tree Guy that has it loves it.

I also had one with an HL Supply Jug (the on sale for $20 ones) that ran almost as well (with a used OEM piston and bridge ports, and a little port work).
Sq: .0225, Ex 103.5, Tr 124, In 80 (was originally 72). This saw went to a homeowner who has several acres of woods, and I periodically get reports that he loves it. (He is a friend of a friend).

Just thought I would share, for whatever it may be worth!

Thank you Mike I appreciate all you guys great info from all

 

[MustangMike]

The purpose of a Bridge Port (I'm not familiar with Boost Ports) is to direct the fresh charge above the intake port to force the spent charge out the exhaust.

A saw will loose power and efficiency if fresh charge is being lost out the exhaust before ignition.

I usually go a little larger and try to angle it a bit more toward the intake (this is one of my Cross 660 jugs).

 

[drf256]

I ported a Meteor identical to how I port an OEM and it didn't run near as well. I ditched it and never looked back.

Want a few more for free? I’m done too.

The AM just can’t get the transfer tunnels right, you think they would just look. Haven’t seen a single one with any direction to them.

Anyone who wants a meteor core for porting, PM me. Just pay shipping.

 

[drf256]

The purpose of a Bridge Port (I'm not familiar with Boost Ports) is to direct the fresh charge above the intake port to force the spent charge out the exhaust.

A saw will loose power and efficiency if fresh charge is being lost out the exhaust before ignition.

I usually go a little larger and try to angle it a bit more toward the intake (this is one of my Cross 660 jugs).

I’m not sure why they run so well on some saws. I pretty much called it quits with doing them.

It’s possible they cause a small jet of charge that helps the main transfer charge direction. One thing that is for certain is that if one angles them to the leading intake edge of the uppers, it exposes the critical intake side roof area. It makes it easier to see the angle of the roof and allows one to blend it better.

Some of the best saws I’ve done have them and some don’t. When I have done them, I tried to angle them towards the cylinder/band interface on the intake side.

 

[MG porting]

Want a few more for free? I’m done too.

The AM just can’t get the transfer tunnels right, you think they would just look. Haven’t seen a single one with any direction to them.

Anyone who wants a meteor core for porting, PM me. Just pay shipping.

The only thing I like about the meteor cylinder is the plateing that's it I used one on a 660 and It was a terd for power I sold that saw I was so "p" at it.

 

[MG porting]

Well I didn't do much for saw today mother inlaw might be catching a cold so have to stay in the house but I got this home made heat shield made this morning.

 

[MG porting]

And I managed to get the clutch and chain brake and all the other good stuff put on everything fits like a glove.

 

[066 redeye]

The only thing I like about the meteor cylinder is the plateing that's it I used one on a 660 and It was a terd for power I sold that saw I was so "p" at it.

So if you want a cylinder that runs good but NOT one thats oem what do you use?
I thought meteor was the ducks guts?
I have a Hyway on my 441c,very happy with it.
Not talking about having to port a cylinder to make it work.
Chris.

 

[MG porting]

So if you want a cylinder that runs good but NOT one thats oem what do you use?
I thought meteor was the ducks guts?
I have a Hyway on my 441c,very happy with it.
Not talking about having to port a cylinder to make it work.
Chris.

If you want something to work good without port work them OEM..... I will never spend the money that Meteor wants ever again until they make improvements OEM for that kind of money.

 

[066 redeye]

OEM 441 top end was going to cost me $708 here in Aust-no thanks.
I am just a fire wood hack.
All I know I can cut faster than the old man can load,good enough for me.
I can't tell if my saw cuts 2 seconds faster than someone else.
Was going to do a 044/046 hybrid if I can get a scored 044 cheap.
But if I have to fit an OEM top end might give it a miss.
I was going to fit a meteor but will give this a miss also.
Chris.

 

[Deets066]

OEM 441 top end was going to cost me $708 here in Aust-no thanks.
I am just a fire wood hack.
All I know I can cut faster than the old man can load,good enough for me.
I can't tell if my saw cuts 2 seconds faster than someone else.
Was going to do a 044/046 hybrid if I can get a scored 044 cheap.
But if I have to fit an OEM top end might give it a miss.
I was going to fit a meteor but will give this a miss also.
Chris.

Holy chit

 

[066 redeye]

Holy chit

That's why I put a hyway on it.
Seemed to have good bevels and finish (me no expert)
Good squish,good compression.
Port timing f&@$?d if I know just put it on and cut wood.
But I take in what you blokes do/know.
If meteor has s?$t ports then I accept what you say.
But what would you guys fit if you had to pay $708 (hyway $150)
Anyone willing to send me cheap parts from USofA?
Chris.

 

[Deets066]

That's why I put a hyway on it.
Seemed to have good bevels and finish (me no expert)
Good squish,good compression.
Port timing f&@$?d if I know just put it on and cut wood.
But I take in what you blokes do/know.
If meteor has s?$t ports then I accept what you say.
But what would you guys fit if you had to pay $708 (hyway $150)
Anyone willing to send me cheap parts from USofA?
Chris.

You could buy a NICE used saw here for that money. And yes, some members have shipped saws and parts down under to bypass some of Stihls outrageous Aussie prices

 

[redlight066]

Here’s the last Meteor 460 I bought. Original cylinder was ruined and the saw was for a local tree service. It certainly wasn’t the quality I expected. Furthermore I bought with the expectation of a bolt on kit

 

[redlight066]

Did some touch up work to the cylinder. I just couldn’t send it like it was because I recommended the “Italian “ kit as an oem replacement.

 

[066 redeye]

My hyway ports looked better than your original meteor.
I see you have port numbers.
Like I said before I don't know with the 441.
Could be running like crap and I don't know it.

 

[066 redeye]

@MG porting sorry if I hijacked your thread.
But it is cylinder related lol.