SawTroll
Information Collector
According to the Walbro part list, the HD-12 is 17.46mm, while the HD-6 is 16.67.
Mastermind meets the Dolmar 7900
- Thread starter Mastermind
- Start date
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According to the Walbro part list, the HD-12 is 17.46mm, while the HD-6 is 16.67.
Trx250r180
Saw polisher
now that you have raised the bar with the 7900 ,you will just have to start building stronger 372's and 440's 
opcorn:
opcorn:
Mastermind
Work Saw Specialist
now that you have raised the bar with the 7900 ,you will just have to start building stronger 372's and 440's
Finger porting a 7900 right now..........
Adirondackstihl
Flyz, Fuel & Fotos
Hedgerow
HACK
Never would have thought to do that...
But hey, why not???
You going with the stock carb? Or un-decided?
Mastermind
Work Saw Specialist
372 carb
Hedgerow
HACK
Good call... Can't wait to see it run...
Mastermind
Work Saw Specialist
We're doing two.......this first one is being a complete pain in our asses. Jon's about ready to chunk it in the woods.
He just tore it back down to check everything.......it appears that the intake boot isn't sealing at the carb base.
Metals406
Granfodder Runningsaw
Welcome my brother. . . You are now part of the Society of Finger-Porting Addicts. . . Resistance is futile.
Metals406
Granfodder Runningsaw
Mastermind
Work Saw Specialist
Duct tape?
####ty design me thinks. :hmm3grin2orange:
ptjeep
Addicted to ArboristSite
Uhhhhhhh............... We're gonna need some vids of that one!:msp_w00t:
Mastermind
Work Saw Specialist
If it ain't a turd I'll have at Jer's GTG.
Hedgerow
HACK
Mastermind
Work Saw Specialist
Jimmy in NC
Addicted to ArboristSite
Tell Jon I feel his pain right now.. got a 372 that wants to fight me right now.
I'm thinking about sending my Dolmar to Randy, thought I'd bring up an old thread. Anybody else have their 7900 Masterminded? I'd love to hear some feedback... the pics and videos are gone from this thread.I enjoy running a 7900 as they do seem light and handle well. I don't like the ass backward kill switch though.
The kill switch thing makes me laugh, you can just pop it out and flip it over and then it's the same as a Husky!
Mastermind
Work Saw Specialist
I remember this saw very well. I was at Terry's last GTG.....eating a hot dog. I hear a saw fire up, and make a few cuts. I could tell it was turning incredible RPM in the cut......so I got my tach and checked it. Nearly 12,000 RPM in the cut !!!!! My 372XP was turning about 100 less RPM......and I thought it was pretty mean.
I asked the guy......."who ported this saw?"
He said you did Randy.....about three years ago.
Welp.......I dug thru my notes.....and that saw was the saw in this thread.
It has a new OEM top end with the lightweight slab sided piston....nothing special in the port work. No carb work or anything.
I have my notes on it.......and still do every 7900 the same way. I just cut the squish now instead of doing a popup piston.
I asked the guy......."who ported this saw?"
He said you did Randy.....about three years ago.
Welp.......I dug thru my notes.....and that saw was the saw in this thread.
It has a new OEM top end with the lightweight slab sided piston....nothing special in the port work. No carb work or anything.
I have my notes on it.......and still do every 7900 the same way. I just cut the squish now instead of doing a popup piston.
Mastermind
Work Saw Specialist
And here it is......
Looks like it runs pretty good! 
I'm sure this has been discussed before, but... How do these saws compare to other ported saws in the same class, like the 372 or the 460/046? Or the 064 since you're already doing one for me?
I'm sure this has been discussed before, but... How do these saws compare to other ported saws in the same class, like the 372 or the 460/046? Or the 064 since you're already doing one for me?
