Holzfforma G372xp Big Bore & Dual Port Muffler Installation
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- čas přidán 8. 09. 2024
- In this video I install a Big Bore kit and Dual Port muffler on my G372xp. These upgrades enhance this saw's power and sound, which is evident at the end of the video.
![Tinkering Tuesday | Installing big bore kit on the 372xp [Part 1]](/img/n.gif)
Wow I was wondering why this is my third build on my saw. I took it to some mechanics and the saw seems to always seize up but now I want it big bored with a duel port exhaust just like what your making. Thanx for the help and ideas I needed.
I have a husqvarna 3120K saw with the 119cc 9.2hp engine and I just did this same upgrade on it. I ordered the 60mm piston/ring/cylinder kit on ebay for $85 and installed it easy, just 4 screws right on the top of the head so very easy to get to. I ported the muffler outlet and added a 2nd exhaust tip and this saw is an absolute beast now. Only problem is it weighs 50lbs since it's a racine rail products ultra kut 2 but it costs $2900 and I bought it for only $40 non running and greasy and rusty. Took it home and added some 2 stroke mix and fuel immediately started shooting out of the fuel line. Replaced the fuel line and fuel filter and it started right up so I washed it, removed all of the rust and polished it up real good and now it looks tough and runs very strong. This saw is so big that it's impressive to look at just sitting on the floor of my office. I run it with the top cover off and a k&n air filter on it because the muffler, head and carb are so huge on this saw that it looks better with no top cover. I have only $160 total tied up in this saw including the $40 for the saw, the piston kit and a few cosmetic parts so I'm very happy with it.
Hey big Tex, make sure you run with adequate cooling air being forced over the cylinder, without that top cover you may toast that new cylinder in no time! I bet it looks cool though!!
czcams.com/video/jvBvHr9Pcmo/video.html WHAT HAPPENED TO HER?
@@rgoldsmith6560 czcams.com/video/jvBvHr9Pcmo/video.html WHAT HAPPENED TO HER?
Sounds good no piston slap, and very snappy
Thank you! Great video, detailed really well. I like the trick with the screwdriver through the roller bearing to install the wrist pin, I hadn't thought of doing that. Whenever I put threebond on in place of the gasket I tend to get some onto the Piston by mistake, which can (and has) lead to a ring actually sticking inside of it's groove... A way I have developed to avoid this is to actually install the Piston into the cylinder before putting the piston onto the crankshaft... With the Piston submerged in to the cylinder, then put the threebond onto the mating surfaces... then there is no chance of the threebond getting into one of the grooves by mistake. Great video!!!
Thanks, Lenny. Great advice on the piston insertion into the cylinder first.
@@Scotcho64 140 psi good compresion 372 xp oe?
@@Scotcho64 czcams.com/video/jvBvHr9Pcmo/video.html przyjacielu uratuję to jeszcze ?
@@Scotcho64 czcams.com/video/jvBvHr9Pcmo/video.html WHAT HAPPENED TO HER?
I would always lube the piston and rings with a little light coat of two cycle oil to prevent scarring of the cylinder and piston..
Just put a hyway big bore kit on mine with caber rings and pop up piston. Waiting a day for the yamabond to cure. Base gasket delete. My first try. I hope I didn't mess anything up. Mine only had 120 psi from hutzl. Base gasket measured 23 thousandths!!
Let me know how it performs.
@@Scotcho64 fired up on second pull. Has 182 pounds of compression
I think it is easier to get the cylinder on and off if you leave the intake boot and carb assembly on it. Easier for me anyway. Also fighting the boot could cause a rip or hole in it after it has a little age on it. Great build btw. Also a place in Va named LiL' Red Barn makes a nice 52mm pop up piston kit for around $30, it's what I used on my build and it's awesome. Really snappy saw.
Thank you for the helpful comment.
If you warm the piston with a heat gun the pin goes in easier, and that cap of oil actually leans out the mixture slightly, if you change the mix check the tune,,
Putting it together without the gasket lowers the ports, slightly de-tuning the port timing, but also raising the compression slightly, best stay with the gasket unless it was made to be that way, or you know different.
Great vid, nicely done... Those extra 2mm make a difference!
Thanks. You contributed to this as well.
Looking to get into one of these saws. Split between this and the G660. Reason I am at a crossroads is because the 660 can run a longer bar. Do you think with the extra power the g372xp could handle a +30 inch bar? I mean hell it's probably for show anyway but just wanted to ask.
@@Shawnf1977 IMO it depends how often you would be running a long bar. For regular use I'd recommend the 660. If just here and there with long bar the 372 big bore will handle a 30" bar , but again regular use would be hard on it.
@@mickmac7264 Thanks for the info. Now I just have to break My Husky love before I break out the card!!!!
@@Shawnf1977 :D Hopefully they will make the 395 at some point
Chaps and hearing protection. Essential for hearing after using chainsaw. Always. Don’t ask how I would know……but you really don’t want bird symphonies constantly sounding off in your quiet moments, when the birds aren’t around. Chaps are cheap, and the first time you need them you will be glad you are wearing. Bonus points for keeping the oil and sawdust off from your jeans. Spoken from a crusty old man who always learned the hard way to prevent a youngster from harming his self because no one bothered to explain. Additional information- saws are addictive. Any saw brings out the man gene and there always will be one that fits a specific job a tiny bit better than the one you have with you. Cheaper than race cars or other manly quests. After using for a while, what is your opinion on the addition of a couple of cc’s? Change the cut speed enough to justify?
The best way to change those top ends is to take carb off first then take cylinder off you'll see it's much easier
Well Larry hows things....funny finding you here...hope your well
@@nickywalsh8492 I'm good nicky Wuts new
@@larrywarner9314 not alot man , same day different shit...😃
@@nickywalsh8492 same here just trying to survive ,after my health scare I just keep to myself , I don't talk to Matt no more he thinks I ripped him off I sent his package to him 7 times and it kept coming back
I'm liking this.......a-lot!
The holtzforma size use a 25 to 1 ratio on the fuel As opposed to the standard 50 to one.
That’s what they recommend on their website.
Would that make the mixture more thicker? In wildfire they’re wanting us to use a 80:1 ratio?
Nice Job! It sounds great. Thank You for the video. Can we get an update? Everything still good?
Awesome work!
Hi
Nice Job
Seems like there should be spring pins available for piston pin instead of the wire retainers
white lithium grease in the piston needle bearing is a big no no use 2 stroke oil or any thin oil
Thank You for the Great Video very detailed, Im thinking of doing this, Is there a reason you did not use a base gasket just wondering and any other advise would be great. Thank You
Taking away that base gasket gives even more compression and he may have done it off camera but it should be checked for squish to make sure the piston has around 20 thou clearance at TDC min on this saw as it heats up it stretches and you dont want the piston hitting the head
I saw with pleasure you are a true master
First off, this is a very well done instructional video. Second, could a guy do a base gasket delete, big bore, and a pop up kit? Or would that be too much? And what do you run for fuel ratio?
That's a good question. My thoughts are that that's asking too much. I blew the spark plug out of mine recently. Had to order new cylinder. Best to keep it it as is.
@@Scotcho64 Best to keep it stock you mean and not do the big bore kit?
Does Holzfforma G372xp have Torx screws on them unlike Original Husq has hex screws? thanks
Torx
Why are you bothering to do this on a new saw? How was the clone 372 working out in the long run? I just bought a couple of these clone saws a couple months ago. Just put together a 372xp from a parts kit but not much use yet. The Holzfforma G660 power head I bought broke the G tang off the piston pin retaining clip on about my 8th tank of gas cutting firewood, trashing the top end. Hutzl claimed a 1 year warranty when I bought it but instead only offered me a new cylinder kit to repair it myself. Only a $23 kit on their website. Meanwhile I spent a good 8 hours total time tearing it down and putting it back together myself. Pretty shody customer service if you ask me. I just got it back together but haven't tried it yet other than first start. It's the midst of winter here in the northeast US so weather sucks right now. I been reading and seeing in peoples clone saw video's that the G part of the clip breaking off is a common problem on the saws with G style clips instead of the C clip. If your building one cut off the G tang upon assembly.
👍👍 wow 👍 mantap
Do you notice a difference in power from the 50mm top end? I have the same saw and was thinking about doing the same. Nicely put together vid, thank you.
Yes. It does add some power.
House Of Henderson some power as in its worth doing or save my money?
Where did you come across the dual port muffler at I am upgrading my saw soon and would like to have one of those to go with the big bore kit
Here is the E bay store: www.ebay.com/str/Performance-saw-parts?_trksid=p2047675.l2563
Do husqvarna parts fit these saws? I am considering buying one of the parts are interchangeable
Yes they do.
What's she turning rpm wise ? done the big bore on my 365 but not the dual port
I am yet to run the rpm test. I plan to do that later this week.
Where did you get the ring compressor that looks pretty trick
You can find them on Ebay
Want to do the same thing when mine comes in with the big bore and the dual port. How much did you have to adjust the carb after it was together?
As I recall, I simply used a tacometer and made some fine tuning. it wasn't that difficult.
@@Scotcho64 did you run an unlimited coil too or should I leave the blue one on and what rpm should it run on the tach? Thanks for your help!
@@ChrisMiller0526 I did not. I started at 11 and settled at 12k. Seemed to be fine there.
Can you leave a link where you bought that top end kit at? Thanks
www.huztl.net/Husqvarna-362-365-371-372-372xp-52MM-Big-Bore-Cylinder-Piston-WT-Ring-Pin-Circlip-OEM-503-93-93-72-p226632.html
How many tanks did you run the extra cap of oil?
Five
Is that cylinder from husqvarna 272?
It's a 372 .
is that the largest kit you can put on it or is there a way to put a bigger one on it let me no thank you
I am not aware of a bigger kit for this saw.
would a 395xp kit fit on the base of the 372 let me no if you can find out thank you
@@jameschang8122 I kinda doubt it, but you may want to explore that to make sure.
Pop up piston would have been better then that flat top.
where can I buy this kit?
www.farmertec.com/
Seems like a lot of work for 6 cc
That 6cc is getting close to 10% extra, its more than you think
The only thing that bothered me is that you did not do a squish test to verify clearances before deciding on doing the base gasket delete.
I did. Just did not include it in the video.
@@Scotcho64 ohhh ok, had me sweating lol.
you'll lose rotation in the cut with a wider piston
it is a mistake
that I already committed
who can i pay to do this for me lol