Aftermarket airfilters, or Stock?

[GASoline71]

. I've found the best way to keep a filter clean, OEM or not, is to keep my chain sharp.

He shoots... he scores! Great post!!!

Gary

 

[timberwolf]

Max-Flow air filter aftermarket system will increase you chainsaws airflow from a stock 89 CFM (cubic feet per minute) to an astounding 135 CFM. This increased airflow should give your saw an extra boost. These kits come with everything you need, including a filter cage, filter cover and two filters: One 60 pore green filter for standard conditions, and one 80 pore white filter for extremely dirty conditions. These filter systems require the use of foam filter oil, unlike the stock system. Max-Flow air filter systems are USFS approved. Fits the following chainsaws:

* Stihl 066 (After S/N 139176186), MS 640, MS 650, MS 660

Always found this one funny, 066 pulls a little less than 40 cfm, so all the extra capacity is for what.

A filter rating in CFM is meeningless without being told the test pressure drop.

That said though the less the restiction on the intake the higher the air density entering the engine, dense air equates to more O2 which then allows more fuel to be burnt and more power to be produced.

 

[Jacob J.]

Always found this one funny, 066 pulls a little less than 40 cfm, so all the extra capacity is for what.

A filter rating in CFM is meeningless without being told the test pressure drop.

That said though the less the restiction on the intake the higher the air density entering the engine, dense air equates to more O2 which then allows more fuel to be burnt and more power to be produced.

I've never run the Max-Flow systems based on any additional air flow claims. I run them based on the fact that I can get two full days of cutting out of them before needing to swap out. The OEM filter is the best there at filtering fine debris and longevity of the engine, but they only go one shift.

The 372 HD system is also good, but again only goes one shift. When I'm running my 372s I just pack two extra clean filters in my bag. The 7900 filter made it about 2.5 hours.

 

[Martinm210]

If you like the Uni filters for your bikes... switch to these (link: No-Toil Filters) and use their filter oil and cleaning system... you won't look back.

Easiest filter system I ever used on a dirt bike.

Gary

I've heard good things about those, I'll check it out...thanks!

Some eye opening info on filters is available here.

No that's good hard data

Not much difference with a cover on, maybe there are some improvements that can be made to the filter cage to open it up a bit more.

 

[scotclayshooter]

These aren't small block chevy's, where you get 25 more horsepower by installing headers, and 25 more horses after installing a freeflow dual exhaust... they are small hand help OPE. A muffler mod is the most basic of all performance gains... so a CLEAN stock air filter will be just fine.

Gary

Yikes when I did my Ford Escort XR3i the exhaust was supposed to give 4 hp and the K&N filter 4hp but together they gave 12 hp 1.6 with 105 hp to start with. Then a cam and a head and modded injection pressures 130 hp plus.

Just pointing out that 1+1 does not always make 2 when modding

 

[NBailey]

Max-Flows around N California

You would be hard pressed to find a logger not running a Max-Flow Holeshot filter system here in Northern California. That and an Oregon lightweight bar are the most common add on's you see on Stihls around here.

 

[matt9923]

may be a dumb qestion but on my 660s outer filter should i put oil on it? its foam like i think?
Matt

 

[Lakeside53]

If it's foam, toss it -it's over 12 years old... and never came on a 660.
The 660 should have a NO-OIL HD filter (yellow non-pleated core) and a felt prefilter. No oil on the prefilter either.

 

[Tree Sling'r]

You would be hard pressed to find a logger not running a Max-Flow Holeshot filter system here in Northern California. That and an Oregon lightweight bar are the most common add on's you see on Stihls around here.

:agree2:

 

[matt9923]

If it's foam, toss it -it's over 12 years old... and never came on a 660.
The 660 should have a NO-OIL HD filter (yellow non-pleated core) and a felt prefilter. No oil on the prefilter either.

Ok i was wondering about the pre filter. Thanks
Matt
20 years old? the saws a week old ms 660

 

[Lakeside53]

20? I said 12.. that's abbout when the foam outer was discontinued


1 week old - should have the felt pre-filter, and a "no-oil" symbol on the black plastic body of the filter.

 

[matt9923]

20? I said 12.. that's abbout when the foam outer was discontinued


1 week old - should have the felt pre-filter, and a "no-oil" symbol on the black plastic body of the filter.

I probably does i just looked quisck and asked dumb. Thanks for the help
its the pre filter
Matt

 

[GASoline71]

You would be hard pressed to find a logger not running a Max-Flow Holeshot filter system here in Northern California. That and an Oregon lightweight bar are the most common add on's you see on Stihls around here.

The Max-Flow filters were popular with loggers up here in WA for quite some time... But you don't see many of them anymore...

Gary

 

[Meadow Beaver]

Just an opinion, but I believe that "white weenies" ( or green weenies) on a v-stack adapter is the easiest way to have good air filters, that don't clog up fast like OEM. They're easy to clean, and it is better air flow than stock filters. Also they're a lot cheaper than buying OEM. Let's face it no one wants to buy two OEM filters, when you can buy ten "white weenies". opcorn:

 

[Meadow Beaver]

Jeez, I guess when I put this thread on here everyone quite using air filters.

 

[innovative]

Who sells the green weenies?

 

[GASoline71]

Madsen't for sure...

Bailey's might sell them... not sure though...

Gary

 

[Hddnis]

I just picked up a Dolmar 143 that has a "white weenie". Not sure if I like it or not. I had never run anything on any saw except the stock filter. Once I get the handle on the 143 fixed I'll run it a bit and see what I think of the filter. I still want to get the OEM filter and cover for it.


Mr. HE