Author Topic: Looking for gasket material  (Read 227 times)

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Offline KilliansRedLeo

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Re: Looking for gasket material
« Reply #20 on: January 04, 2014, 12:52:00 pm »
Thanks Kevin and Jim, I knwew about the differences in the transfer ports. At one time Dolmar used a windowed piston in the 7900 then changed to a slab sided at some later point. I do not know if there were changes to the transfers to go along with this. The only pistons I can find for the 7900 now are the slab side, even if you try to order the windowed piston the part number superceedes to the slab piston.

Kevin had mentioned earlier the experience he had with using a slab sided piston and the results he had with it in a windowed piston saw. So that is what got us to thinking about the 365 piston. What the H#ll it is an experiment anyway, if it doesn't work I will throw a windowed 262 piston in it and away we go!
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

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Offline 660magnum

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Re: Looking for gasket material
« Reply #21 on: January 04, 2014, 01:06:45 pm »
The 7900 has the lower transfers in the base flange of the cylinder also. Therefor a windowed piston does not contribute to the transfer.
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Offline Cut4fun .

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Re: Looking for gasket material
« Reply #22 on: January 04, 2014, 01:22:36 pm »
The 262 has the old school Mahle single transfer closed ports like the older Dolmar 6800 and Stihl 066. That is why it has the window piston. The bottom of the transfers is in the cylinder wall.

The Husqvarna 365 has the bottom transfers in the base flange of the cylinder and does not need a window piston.

The 475 2077 505 2083 are single transfer like a 044 046 etc too. Using windowed piston.  The slab side BB372 worked great in the 475 single transfer I did.
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Offline KilliansRedLeo

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Re: Looking for gasket material
« Reply #23 on: January 04, 2014, 01:35:31 pm »
Well, I guess we will find out! If it doesn-t work we haven't lost anything, just time and us old retired fa#ts have lots of time ::)!
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
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Offline Cut4fun .

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Re: Looking for gasket material
« Reply #24 on: January 04, 2014, 01:45:48 pm »
cylinder on LEFT 475 505 2077 2083.  cylinder on RIGHT 415 445 425.   





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Offline 660magnum

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Re: Looking for gasket material
« Reply #25 on: January 04, 2014, 03:05:11 pm »
I remember that 475 ran real well with the BB 372 piston.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
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Offline KilliansRedLeo

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Re: Looking for gasket material
« Reply #26 on: January 04, 2014, 03:14:26 pm »
Thanks guys! I had my doubts but given what Kevin just posted, I will still try for the 365 piston in one of the 261s and the 262 in the other.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
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Offline Cut4fun .

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Re: Looking for gasket material
« Reply #27 on: January 04, 2014, 07:58:32 pm »
Come across some gasket material on Northwood saw too today.   http://northwoodsaw.com/store/index.php?l=search_list&s[search]=gasket+material&s[title]=Y&s[short_desc]=Y&s[full_desc]=Y&s[sku]=Y&s[match]=all&s[cid]=0
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Offline KilliansRedLeo

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Re: Looking for gasket material
« Reply #28 on: January 15, 2014, 10:10:52 am »
Killians so what type of material did you get? What kind do you think is close to oem gasket material. Checked out there site and they had a whole lot of options.

I purchased 1/64 & 1/16 ASTM material from McMasterCarr will have to use two gaskets to get close to 0.080.
0.080 would have gotten me to 0.020 squish but will only be able to get to 0.078125 using a 1/64 & 1/16 pair of gaskets. Which will put me at 0.01875 squish. Will give it a try ans see if she blows up!
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

 

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