Author Topic: 7300 cylinders  (Read 567 times)

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Offline Cut4fun .

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Re: 7300 cylinders
« Reply #10 on: January 24, 2014, 07:52:40 pm »
I thought big bores were 54mm.

52mm is stock 7900
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Offline aclarke

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Re: 7300 cylinders
« Reply #11 on: January 24, 2014, 08:43:37 pm »
Was thinking of boring the 6400 cylinder to 52.   curious how the 6 open transfers would flow on a race saw

Offline 660magnum

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Re: 7300 cylinders
« Reply #12 on: January 25, 2014, 04:01:57 am »
If you bore a 6400 cylinder to 52mm, the open transfers will be so small that you will have terrible performance

To bore one of these cylinders will cost you $500 by the time you get it replated and finish honed
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Offline aclarke

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Re: 7300 cylinders
« Reply #13 on: January 25, 2014, 05:09:57 pm »
Under $300 to strip, bore re-chrome at Millenium.  I think your right about the transfer tunnels getting too small!  just did a little port wodo on a 6400 jug and noticed a lot of carbon from exhaust back flow into transfers!  Anyone else noticed this?  Seems like some more blow down is in order

Offline Cut4fun .

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Re: 7300 cylinders
« Reply #14 on: January 25, 2014, 06:00:12 pm »
Under $300 to strip, bore re-chrome at Millenium. 

Thats what I remember. Fit piston to your clearance specs too.

Never ran a 6400 let alone seen inside one, besides pics.
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Offline rms61moparman

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Re: 7300 cylinders
« Reply #15 on: January 25, 2014, 07:52:56 pm »
Under $300 to strip, bore re-chrome at Millenium. 

Thats what I remember. Fit piston to your clearance specs too.

Never ran a 6400 let alone seen inside one, besides pics.

We can remedy that about any time!!!!
I have 2 6400's and can't forsee a time in the rest of my life that I don't have one.
They are GREAT saws, and drastically under-rated......IMHO.


Mike

Offline 1manband

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Re: 7300 cylinders
« Reply #16 on: January 26, 2014, 06:05:41 am »
snipped: 
just did a little port wodo on a 6400 jug and noticed a lot of carbon from exhaust back flow into transfers!  Anyone else noticed this?  Seems like some more blow down is in order

sounds like you're at the limit of what that jug can do!
hiatus

Offline Cut4fun .

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Re: 7300 cylinders
« Reply #17 on: January 26, 2014, 09:59:09 am »
Under $300 to strip, bore re-chrome at Millenium. 

Thats what I remember. Fit piston to your clearance specs too.

Never ran a 6400 let alone seen inside one, besides pics.

We can remedy that about any time!!!!
I have 2 6400's and can't forsee a time in the rest of my life that I don't have one.
They are GREAT saws, and drastically under-rated......IMHO.


Mike

I forgot to remind you for the Poulan GTG, to bring a stock 6400. 
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