TraditionalTool
Addicted to ArboristSite
Yeah, Brad's muffler mod is pretty sexy in comparison. You have him beat cost wise!
Progressive Modding of a Dolmar 7900
- Thread starter blsnelling
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Yeah, Brad's muffler mod is pretty sexy in comparison. You have him beat cost wise!
This saw didn't cost me a dime.
Uhhh, but it's not mine, lol.
TraditionalTool
Addicted to ArboristSite
Nothing wrong with that, give you some free toys to play with, huh?This saw didn't cost me a dime.
I should have noted on rahtreelimbs mod, his weld was XLNT, if I could weld like that I might try something like he did, but I think I'm better off going the route you did with the 288 deflectors/spark arrester.
Just north of 150 for me too. I was wondering if the BB kit was designed to deliver that as a goal for a happy medium of power/reliability.
All the kits(3) I got from Bailey's have come in at the same range.
All the kits(3) I got from Bailey's have come in at the same range.
No. This saw was bought for MCW to be ported and then shipped to AU.
TraditionalTool
Addicted to ArboristSite
Yeah, that's what I said...gives you some free toys to play with!
Yeah, that's what I said...gives you some free toys to play with!
Ahhh. Gotcha
spacemule
The Peanut Gallery
This is another way to go on a 7900 muffler. Functional but doesn't look as good as Brads!
On the first pic you 'll notice that I opened up the factory port too!
IMG]http://www.arboristsite.com/attachment_29586.php[/IMG]
/http://www.arboristsite.com/attachment_29590.php
Looks like a great way to set the bark on fire.
fredmc
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spacemule
The Peanut Gallery
Dude, you're the kind of guy who couldn't poor piss out of a boot with instructions on the heel.
rms61moparman
Addicted to ArboristSite
That bark is gonna be on fire soon anyway!!!
PetrolHead
ArboristSite Operative
I knew a bloke once that couldn't find his own arse with a seeing eye dog!
But I don't want to de rail the thread.
Hope the saw goes through ok.
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Kinda sucks that I read that to take a leak!!!
Luckily too that instructions are written on the toilet paper!!!
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gink595
Addicted to ArboristSite
After seeing what everyone elses compression readings were, I went and tested my 7900, it blew 185. That is about 10 lbs higher than the last time I checked a while ago, my guess it is broke in now and it is completely stock even the muffler
B_Turner
Addicted to ArboristSite
After seeing what everyone elses compression readings were, I went and tested my 7900, it blew 185. That is about 10 lbs higher than the last time I checked a while ago, my guess it is broke in now and it is completely stock even the muffler
Seems a little high. I might check my mine sometime for grins. I was guessing more like maybe 160-5.
I still think modding saws from new using timings to judge performance gains is problematic. Certain saws pick up 10 percent just from breaking in a tank or two.
Although both my 7900s pretty much ran full steam right out of the box. But my 346 was a real turd at first and it woke up quite a bit.
gink595
Addicted to ArboristSite
Mine ran really strong right out of the box, I've never been displeased with it's performance, I'm sure no two saws will have the same compression readings, to many machine tolerances variances in production.
B_Turner
Addicted to ArboristSite
I love both my 7900s, my favorite saws to run of all my saws.
But one of them is just a little stronger and smoother than the other. Just a touch but discernable.
And of the three 3120s I've owned (from new) one was much stronger than any other 3120 I've run. Wish I knew why, so I could have it done to my current 3120s. Even with a 50 inch bar I pretty much could not stop the chain levering with all my might on that saw. Got rid of it because of the low limiter before I knew about swapping out the coil and flywheel which I did later on two.
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