What's on your bench?

[MG porting]

K.

I think I’ve almost got this one.

460mag holds pressure for a long time.

Flip the MityVac to vac and she drops down quick.
Pull the starter and it holds vac for hours.
I made sure the decomp was closed up..

Starts right up.
Made a few cuts, held Idle well.

Please enlighten me.

Is this a questionable seal?
If I hand it back to the owner will it fry?

As what MustangMike said change out the decomp and go from there.

 

[huskihl]

Great lookin saw! They look so much better without multiple shades of white.

 

[J. Loe]

If you suspect the decomp, why not just temporarily swap it out to see it that is the problem? (at least that is an easy swap).

Is it possible something was leaked when you sealed up the ports?

Were the intake boot and impulse line on the saw (are they old or new?)

If you blocked the carb, pressure/vac test the carb to see it is it the culprit.

Thanks a lot for the help man.


The DeComp has been swapped out for a new oem.

The fact that cycling the system gets it to hold vacuum or not is puzzling.
Perhaps I installed the seals cockeyed and it seats when rotated?

Could you give me an example of what you mean by ‘something was leaked?’
I lubed the shaft ala afleetcommand’s video.
I applied a light coat of 518 to the outside of the seals.

I’m using a stihl pressure tester fitting so the carb isn’t on the saw.
The impulse line and boot are new..

How would one test for leakage if the bugger holds pressure?

Anyone know someone nearby with some good ms460 mag crankshaft seals?

 

[JohnnyBlade]

Thanks for the help man.


The DeComp has been swapped out for a new oem.

The fact that cycling the system gets it to hold vacuum or not is puzzling.

Perhaps I installed the seals cockeyed and it seats when rotated?

Anyone know someone nearby with some good ms460 mag crankshaft seals?

R u using the Mityvac 8500? Or what is everyone else using? I dont have one so i cant really help. Just trying to get to that point...i have just used the cross ur fingers method on my one build so far for crank seals

 

[J. Loe]

R u using the Mityvac 8500? Or what is everyone else using? I dont have one so i cant really help. Just trying to get to that point...i have just used the cross ur fingers method on my one build so far for crank seals

Yeah, MityVac 8500.
Seems to work really well?

 

[huskihl]

Where are you pulling vacuum from? Spark plug adapter or impulse line?

 

[JohnnyBlade]

Yeah, MityVac 8500.
Seems to work really well?

Cool that was the one i was eyeballin. I may have to just send it tonite. The whole kit on amazon for $59

 

[MustangMike]

Could you give me an example of what you mean by ‘something was leaked?’

I use a piece of bike tube and a muffler spacer to seal the exhaust. My bike tube rubber got tired, and that was the leak I could not find.

 

[J. Loe]

Where are you pulling vacuum from? Spark plug adapter or impulse line?

This lil beauty.

Pushes/Pulls threw the boot and plugs the impulse.
Sweet

 

[J. Loe]

I use a piece of bike tube and a muffler spacer to seal the exhaust. My bike tube rubber got tired, and that was the leak I could not find.

I was wondering the same so I did put on a new bit of bike tube this time.

 

[J. Loe]

Cool that was the one i was eyeballin. I may have to just send it tonite. The whole kit on amazon for $59

Got mine from eBay for $62 something shipped.
Niiiice

https://www.ebay.com/itm/Mityvac-8...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

 

[huskihl]

This lil beauty.

Pushes/Pulls threw the boot and plugs the impulse.
Sweet

When it leaks vacuum, have you tried pulling up on the decomp?

 

[JohnnyBlade]

Ok so im back at the bench. Been a lil bit. Workin on the 2159 that i had to clean the cylinder up on. 1 semi minor gouge below exhaust and pitting/ pin holes if u remember. Had bought a Cross P/C for it before i owned the saw. Ya i know.....CAD AND 4th of july HLS deals...... check this thing out. The warhawk P/C is light years ahead of this thing in quality. This is gonna be my starter head in porting. Doubt its worth the hassle to send it back for the $20. I really know y everyone preaches OEM now. The warhawk looks like a caddy comepared to this. The Cross is supposed to be Nikasil plated. I think its more like Dikasil plateddecomp hole is 3 times the size of OEM. And 90% the size of tranfer portlook at that BOOGER! Just waiting to come off and trash some bearings! Lol! Serious?

 

[JohnnyBlade]

Finger nail feelin! Piston comes pre scored to aid in decision making. U gots to be kiddin me!

 

[Dub11]

Ok so im back at the bench. Been a lil bit. Workin on the 2159 that i had to clean the cylinder up on. 1 semi minor gouge below exhaust and pitting/ pin holes if u remember. Had bought a Cross P/C for it before i owned the saw. Ya i know.....CAD AND 4th of july HLS deals...... check this thing out. The warhawk P/C is light years ahead of this thing in quality. This is gonna be my starter head in porting. Doubt its worth the hassle to send it back for the $20. I really know y everyone preaches OEM now. The warhawk looks like a caddy comepared to this. The Cross is supposed to be Nikasil plated. I think its more like Dikasil platedView attachment 142838decomp hole is 3 times the size of OEM. And 90% the size of tranfer portView attachment 142839View attachment 142840look at that BOOGER! Just waiting to come off and trash some bearings! Lol! View attachment 142841Serious?View attachment 142842

Them transfers remind me of a kid carving a jack o lantern lol.


Have you seen what the oem head looks like yet?

 

[JohnnyBlade]

Them transfers remind me of a kid carving a jack o lantern lol.


Have you seen what the oem head looks like yet?

FLMAO!
Yes. I posted it here a few weeks ago. It looks like heaven filled with naked chicks compared to the old cross jackazzolantern the Cross came with a "Caber" and im pretty sure ill just pitch that too, prob lieing. Heres Oem with a few beauty marks on exhaust side.

 

[Sty57]

Stihl makes oval Winter Filters that flow just great (wire mesh screen). I think they work well as long as you are not making milling dust. They are also very quick and easy to clean (I remove the filter and use a dust pan brush). I love em.

That's what I have on it.

 

[Sty57]

you and your signs suck lol.

Did you knock it off the bench.........

Nah .....my bench isn't racist. I like them all, as long as they run good.

I've never been a one flavor Kool-Aid drinker.

 

[Sty57]

Great Halloween saw!

Halloween is my favorite time of year....

 

[Sty57]

Great lookin saw! They look so much better without multiple shades of white.

Thank'ya