Agent Smith
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Damn i never win
Another chainsaw dyno...
- Thread starter Red97
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Agent Smith
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Is that like even a blind squirrel gets a nut sometimes? Lol
Terry Syd
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OK, what does Bgd stand for?
Terry Syd
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I'll be darn, I'd never have picked that.
Terry Syd
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The base gasket removal blew my mind. Ok, an increase in torque from the increase in compression, but everything is now occurring at a higher RPM.
The exhaust port is lower, so that shouldn't increase the RPM. Likewise, the transfers are lower so the powerband should have moved slightly lower, what gives? - Ah ha!, I'll bet the intake on that model of saw could use a bit more intake timing.
The exhaust port is lower, so that shouldn't increase the RPM. Likewise, the transfers are lower so the powerband should have moved slightly lower, what gives? - Ah ha!, I'll bet the intake on that model of saw could use a bit more intake timing.
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If you have excel I can help you out. I can teach you how to plot or even make a sheet that can automatically plot some files against each other.
Terry Syd
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Considering what the base gasket delete did, perhaps the next step would be taking a bit off the base and see if the power bumped up a bit more. You could always put in a gasket if you started going backward.
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BGD 10% HP bump! LIKE
I do have excel, wasn't sure if I could come up with a. Template to just put in the numbers
MustangMike
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I presume the BGD is the higher #???
I did that to my 10 mm 044 and noticed a similar increase. My thoughts on why:
1) Improved squish and compression.
2) The lower Ex (numerically higher) provides a slightly longer effective power stroke (distance from TDC to the Ex).
3) Ex and Transfers move approx. the same, so about the same BD.
4) Lower intake on a stock cylinder will almost always increase power.
I did that to my 10 mm 044 and noticed a similar increase. My thoughts on why:
1) Improved squish and compression.
2) The lower Ex (numerically higher) provides a slightly longer effective power stroke (distance from TDC to the Ex).
3) Ex and Transfers move approx. the same, so about the same BD.
4) Lower intake on a stock cylinder will almost always increase power.
Last edited:
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Terry Syd
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Easy enough to test, make a run with a two-port muffler and then make a run with the three-port.
No subjective 'feel' in the wood, no subjective sounds from the muffler - all there is is the dyno results.
No subjective 'feel' in the wood, no subjective sounds from the muffler - all there is is the dyno results.
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Correct, the dyno doesnt care what things feel like, it will only provide facts. God I love science.
You’re losing torque with all of them openings ......
So who needs a front cover anyway?
huskyboy
Sorta a husqvarna guy...
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What were the results for the ported 8000? I seem to remember being disappointed when I ran a bone stock one a few years ago. At least compared to my 064 or 7900 it felt lacking. But feel is subjective right?
What were the results for the ported 8000? I seem to remember being disappointed when I ran a bone stock one a few years ago. At least compared to my 064 or 7900 it felt lacking. But feel is subjective right?
It was healthy. I forgot to video the reading. I'll get it later.
