the all aussie dribble thread!

[chippy]

461 Stock muffler internals

Note that the 'baffle' outlet is marginally larger than the exhaust port. Also note that some of the exhaust pulse will hit the baffle on an angle and bounce back..

I cannot see below the exhaust port without removing the baffle but my finger can feel that there may be something there.

 

[VinceGU05]

looks dry as a nun's nasty ! although size wise it doesnt look restrictive; but every time the exhaust gases have to change direction it does slow it down ( restrictive but maybe splitting hairs) IMHO

 

[chippy]

A slightly better pic of the port.

On as close as an inspection I could do by eye, it has the same shape, it looks the same as yours Vince you posted in the photo above.

 

[chippy]

looks dry as a nun's nasty ! although size wise it doesnt look restrictive; but every time the exhaust gases have to change direction it does slow it down ( restrictive but maybe splitting hairs) IMHO

I think your right mate but I only have let it idle for a minute and ran it flat out for 5 seconds....it was 4 stroking flat out but I suspect it is on the lean side instead of the rich side....but I'm not sure...i am currently running Stihl HP ultra at 40:1

 

[VinceGU05]

yeah general shape will be the same.. from what i have read, the port is made wider at the piston side by a few mm and the top and bottom of the port just tweaked a mm for port timing.
will have to get out ya trusty FatMax 8m tape measure and compare sizes.

 

[VinceGU05]

I think your right mate but I only have let it idle for a minute and ran it flat out for 5 seconds....it was 4 stroking flat out but I suspect it is on the lean side instead of the rich side....but I'm not sure...i am currently running Stihl HP ultra at 40:1

i think i will bump up my next batch to 30:1 . like i said what i have in my 461 could be less than 25:1 being heavy handed with the mix.

 

[chippy]

i think i will bump up my next batch to 30:1 . like i said what i have in my 461 could be less than 25:1 being heavy handed with the mix.

Ummm, yeah....did the fire brigade come last time you ran it for a while?

Would be surprised if you haven't fouled your plug pretty bad too.

I've got to get this limiter off this H screw and tune it properly so I know it's not on the lean side....can I motor 4 stroke running lean?

I'm guessing with this saw it can because the rev limiter kicks in at 13500 and I reckon that will make it sound like it's 4 stroking even when it's as lean as, but I'm just taking a wild guess at this...I don't know.

 

[VinceGU05]

lol naa mobil 1 hardly smokes at all.well on start up it does smoke, but once warm runs fantastic.
$45 bucks and can get a tach to u. doesnt need to me mounted on the saw.. just put it on the plug lead on ya saws for tuning.

 

[Stihlman441]

Worked out today that the chain guide case protector thingy from a 660 fits a 661

 

[WidowMaker_1]

better wet than dry, unless your cooking sausages

 

[Jimbo209]

Any one want some of the gb ti bars from left coast supplies, if it's a better deal than local, I'm thinking of getting some of the do25 in .404, 20"$22/24"$27/32"$36usd + SHIPPING
There is a TI d009 3/8 32"there as well
http://leftcoastsupplies.com/?s=GB+Pro+Top+Titanium+CN40&post_type=product
http://leftcoastsupplies.com/page/2/?s=gbf+bar&post_type=product

 

[chippy]

I might use the tacho once a year....probably should tune more often, might have to with the limiter removed...no idea if the vibration from the saw will rattle the jet around but that's what it's there for.

 

[chippy]

Any one want some of the gb ti bars from left coast supplies, if it's a better deal than local, I'm thinking of getting some of the do25 in .404, 20"$22/24"$27/32"$36usd + SHIPPING
There is a TI d009 3/8 32"there as well
http://leftcoastsupplies.com/?s=GB+Pro+Top+Titanium+CN40&post_type=product
http://leftcoastsupplies.com/page/2/?s=gbf+bar&post_type=product

That's cheap. No 36" bar though and limited .063 by the looks of it.

 

[billyj]

damn the 32" ti doo9 is cheap

 

[Jimbo209]

That's cheap. No 36" bar though and limited .063 by the looks of it.

Look at the protops other sizes as well

There's a 32".404 protop @$36check first link

 

[Jimbo209]

damn the 32" ti doo9 is cheap

Thinking being a few back or direct may be cheaper due to aus post
Waiting to hear back from Gregg

 

[Stihlman441]

Any one want some of the gb ti bars from left coast supplies, if it's a better deal than local, I'm thinking of getting some of the do25 in .404, 20"$22/24"$27/32"$36usd + SHIPPING
There is a TI d009 3/8 32"there as well
http://leftcoastsupplies.com/?s=GB+Pro+Top+Titanium+CN40&post_type=product
http://leftcoastsupplies.com/page/2/?s=gbf+bar&post_type=product

Shame there's not much .063
Could change sprocket noses I suppose

 

[VinceGU05]

I might use the tacho once a year....probably should tune more often, might have to with the limiter removed...no idea if the vibration from the saw will rattle the jet around but that's what it's there for.

standard they have a limited coil. so you could be real lean but it wont over rev... can still have a meltdown. i would have thought you would tweak it a bit between summer and winter at least.

 

[VinceGU05]

Worked out today that the chain guide case protector thingy from a 660 fits a 661
View attachment 440729

how are those 661's performing andrew? smashing the 660's out of the park?

 

[lumberjackau]

Would be surprised if you haven't fouled your plug pretty bad too.

Plug is cheaper than an engine