Genuine Makita EA7900, EA7901 Air Filter Cartridge

[Adirondackstihl]

The filter kit affects the RPM of the 7310 / 7910 and the new Makita EA7300 & EA7900 SLR Engines.

It doesn't affect the older 6400/7300/7900 engines.

What about a 7900 with a 7910 top end

 

[Lightning Performance]

What about a 7900 with a 7910 top end

You took the words right out of my mouth or close a 6401 and 7910 0r 7900 top.

Oh hell I'll just port a 655 top and not worry about any of this 73xx 79xx BS. lol

 

[166]

I believe it's all in the SLR muffler.

 

[Lightning Performance]

I'm not running that. So, where does this leave Mike @mdavlee with his choked off saw? Was his an SLR unit?

 

[Lightning Performance]

This is a nice Can-O-Worms. Whadint me.

I'll put a CornCan muffler on it, right Termite?

 

[Deets066]

I don't care about a choke on toys.

I remember that piece that now. You spent countless hours machining that thing.
Does it help spit back with the tight turn?

Spit back isn't bad on this saw anyway, even with the larger carb. I don't believe the turn affects it much. The tract in the stack is wide and short.

 

[Deets066]

The solo hybrid that @stihl livin got from Mike wouldn't hardly run with a stock filter. But that was with no choke and the RWJ on it. The saw was finicky but man did it run.
Pretty sure it got switched back before he sent it out

 

[Lightning Performance]

RJW damn. I want to cut wood not shoot flames.

I just ordered one of those HLS 70-90 carbs to check out. Hoping it's around 7/8"-1" I'll have a large saw to feed.

They might be good to feed meth to a 60-75cc saw.

 

[Deets066]

RJW damn. I want to cut wood not shoot flames.

I just ordered one of those HLS 70-90 carbs to check out. Hoping it's around 7/8"-1" I'll have a large saw to feed.

They might be good to feed meth to a 60-75cc saw.

One of these days your gunna need to do a build thread.

 

[Lightning Performance]

One of these days your gunna need to do a build thread.

Maybe. Nobody cares about my FrankinJunk

 

[Deets066]

Maybe. Nobody cares about my FrankinJunk

Bullchit, I know better

 

[Lightning Performance]

I'm bringing a saw to TN if it is done. Need another jug to try. The piston is on the way and it's a big one. I'm not sure it will survive break in.

Anybody run 94 exhaust yet with 7910 SLR?

 

[Lightning Performance]

After page three nobody will even look at this thread.

 

[Deets066]

I'm bringing a saw to TN if it is done. Need another jug to try. The piston is on the way and it's a big one. I'm not sure it will survive break in.

Anybody run 94 exhaust yet with 7910 SLR?

*s-wordcan the SLR

It's worth a try if you can get 28-30 blowdown

 

[Lightning Performance]

Geezer that's a lot of grinding. If it's not cut maybe, cut I might run out of casting in the upper turn.

 

[mdavlee]

I run that Solo hybrid with a 385 carb and it ran even better and would tune under 15.5k. Backtroller 6401/7910 was the one the HD filter kit killed the performance. It may have been pulling the choke shut with the filter but I never checked. Just pulling the filter off was worth 10% in cut times. The stock filter setup I never noticed it being that restrictive.

 

[mdavlee]

Geezer that's a lot of grinding. If it's not cut maybe, cut I might run out of casting in the upper turn.

You won't run out unless you're going to 120 and cut a good bit off the base.

 

[Lightning Performance]

I run that Solo hybrid with a 385 carb and it ran even better and would tune under 15.5k. Backtroller 6401/7910 was the one the HD filter kit killed the performance. It may have been pulling the choke shut with the filter but I never checked. Just pulling the filter off was worth 10% in cut times. The stock filter setup I never noticed it being that restrictive.

That's odd. I don't want trouble just more zing. Thanks Mike

 

[mdavlee]

That's odd. I don't want trouble just more zing. Thanks Mike

For sure get a modded stock carb if not fit a 385/390 on there.

 

[Lightning Performance]

That 395 air tube still looks promising.

I have two 6400 and 6401 carbs. Both too small.