I just recently bought a husky 372xp, and I am interested in giving it some more power (not that its lacking much). I was thinking a big bore kit and a ported muffler perhaps. Anything else I should think about? I have done some reading on here and it seems that people disagree about the manufacturer of the piston and cylinder kits. Just looking for some advice. Thanks in advance.
372xp Performance Questions
- Thread starter TScan18TZ
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SawTroll
Information Collector
A muffler mod is by far the most cost-effective way.
Regarding the BB kits, I am not even sure it increases the power at all, without extensive work by someone who knows what to do.....
Regarding the BB kits, I am not even sure it increases the power at all, without extensive work by someone who knows what to do.....
A BB kit would be a waste of money on a new. The same gains can usually be had with the OEM P&C. Sounds like you need to start shopping for someone to woods port your saw. That ought to have that 372 running like a 395.
HUSKYMAN
Addicted to ArboristSite
Yeah a woods port is the next step after the muffler mod. A mild woods port usually will not harm the durability of the saw at all, if done right. Why do you think all of Brad's saws are "Snellerized"? 
I would do the muffler mod first, then if you still want more contact a performance builder. Do some research and you will find out who they are
I would do the muffler mod first, then if you still want more contact a performance builder. Do some research and you will find out who they are
Once you've had a taste of a good woods ported saw, there's no going back. Seriously. It makes a huge difference if done right. I don't mess with my old saws, but all of my newer saws that I actually use are all ported.
HUSKYMAN
Addicted to ArboristSite
Have you ever had a saw you ported that came out with very little gain, or even less performance?
BlackCatBone
ArboristSite Guru
I am also interested in a woods ported 372xp, but I haven't a clue who to talk to or what to ask for. I am weighing this against waiting for feedback on the 575xpNE(5.9hp) model. I want to end up with a powerful beast that is reliable.
romeo
Addicted to ArboristSite
You can really make them run with the 50mm piston. The first thing I would do is find a black coil and do a muffler mod, those are two very big gains and easy to do.
Maybe I've been lucky, but no I haven't. I've only messed with pro Stihl saws though. I understand some, ie Dolmars, do not respond as well. I take that to mean that their already tuned pretty agressively. I still shake my head when I see a saw that was ported by a "builder" and it's not much more than stock. That's what drove me to start doing my own. I'm a rookie though. Give me enough time and I'll likely screw one up. Don't take me wrong here. There are good builders out there. I'm not out to bash all the saw builders. I am out to encourage anyone with the patience and ability to try it themselves.
My 260, 361, and 460 are all pretty much built the same way. They all have great torque and they pull 15,500, 15,100, and 15,000 RPMs respectively. My 066 RL turns 14,300 but I think there's more in it. I think it would benefit from some more intake duration.
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Black coil?? Im a newb at this kind of stuff ... if you havent noticed. Is there an individual who I can buy all this stuff from who can give me a little direction along the way? Things like the muffler mods and coils and porting?
Also, do people do ported BB kits? Does that make a bigger difference?
And BTW i bought the saw "lightly used" so its not brand new
Travis
Also, do people do ported BB kits? Does that make a bigger difference?
And BTW i bought the saw "lightly used" so its not brand new
Travis
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As a rule of thumb, OEM parts are better than aftermarket. The juy is still out on the BB kits. They have improved in the last year though. Still, most seem to say that a modded OEM cylinder will have equal or better power than the BB kit. I don't know this first hand but have searched it out a little. I was most interested in a Stihl 660 BB kit. The biggest hurdle there is getting the compression up due to a large combustion chamber.
scotclayshooter
Addicted to ArboristSite
Just buy a 7900!:chainsawguy:
romeo
Addicted to ArboristSite
The blue coil has a rev limiter, the black is unlimited. You just need to pull the starter cover and see what color it is. I don't like rev limiters, many saws have died a horrible death because of them, they will tune out like its four stroking and still be very lean.
Something else you should do is cut the limiter tabs off of the H and L jet screws on the carb.
Brad, didn't you have trouble with a DN361? If so, what was the problem and did it get resolved?
SawTroll
Information Collector
There are far less gain to be had from porting the strato engines, like the 575xp and MS441 (the copy - lol).
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SawTroll
Information Collector
Often you can actually see the blue color trough the ribs in the cover....LOL
BlackCatBone
ArboristSite Guru
Well, if the 575 new new new edition actually turns out well, I would probably not mod it at all. Maybe a little muffler modification.
Lakeside53
Stihl Wrenching
opcorn:
HUSKYMAN
Addicted to ArboristSite
Sounds like you need to do a lot more research before you are ready to hack into a perfectly running saw
