MillerModSaws and the PS-7910
- Thread starter MillerModSaws
- Start date
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Where is the pin end? it's not centered with the intake port?
Mastermind
Work Saw Specialist
Nope........off to the side.
I don't suggest it, but I've seen .010" on a few 7900 work saws. I like .017-.020 myself.
MillerModSaws
USE2COULDBESPONSER!
On the intake I did very little. I squared squared the corners up just a bit and widened just a little and I mean a little. I didn't do much more than knock the nikasil overlap off. And then smoothed the intake tunnel up getting rid of all the ridges. It's sitting at exactly 80° right now.
l think these saws run well stock....but that aint exactly any help here. Well engineered jugs.
MillerModSaws
USE2COULDBESPONSER!
Here it is. Lol.
Mastermind
Work Saw Specialist
IMHO widening the uppers is a mistake. They will scavenge better if they aren't overly wide.
MillerModSaws
USE2COULDBESPONSER!
These are not widen. If they are it's just from cleanup.
Mastermind
Work Saw Specialist
I could see that.
I normally just take them out to edge of the factory bevels.
Now on a 562XP.......I wrap em on around. The transfer flow comes in at a different angle on those though.
Hedgerow
HACK
It just wouldn't be a Dolmar project if them bastards didn't make it difficult...
Looks like good work so far...
LegDeLimber
Addicted to ArboristSite
Do you still have that resonant chamber from inside of the muffler?
If so, could you measure the volume of it?
Would prefer in CCs if you have something like an oil ratio cup.
Looks like you could hold it like I rotated your pic and depending on how wide,
I guess you would put your thumb or a piece of cardboard or a port blocking plate etc...
at the blue arrow and fill with water.
then one more request, please sir.
Could you post photos of it from the directions of the 3 red arrows.
Maybe a scale/ruler laying alongside would be just awesome.
If so, could you measure the volume of it?
Would prefer in CCs if you have something like an oil ratio cup.
Looks like you could hold it like I rotated your pic and depending on how wide,
I guess you would put your thumb or a piece of cardboard or a port blocking plate etc...
at the blue arrow and fill with water.
then one more request, please sir.
Could you post photos of it from the directions of the 3 red arrows.
Maybe a scale/ruler laying alongside would be just awesome.
Attachments
It's more about direction of the charge than area IMHO.
MillerModSaws
USE2COULDBESPONSER!
I already threw it away. However I will try and remember to do this when I do the second saw for you.
Have you modded one Josh?
No porting involved but doubling the oil output has been figured out
http://www.arboristsite.com/community/threads/dolmar-makita-oil-pump-upgrade-modification.264696/
