showing how i went about porting this husqvarna 61 chainsaw and a little bit of ranting some language may not be safe for work #portedchainsaw #husqvarna61
Hey dude, it got warm up here, & I had a ton of catching up to do on my outdoor stuff. So I aint been able to watch much of your videos. I watched this'n lastnight. I have a white top 61 Rancher I fart around with. I had the 272 top end swap in mind when I bought it, but the top end was in awesome shape. Well, I Had to do something, by God. So I deleted the cyl base gasket & piped her out. Similar to what ya did here (with the muffler). And cleaned her up real good. It really woke this thing up. So, ya know, it runs so damn good, I'll just leave it be for a spell, lol. Here's s few bucks. I appreciate ya. Hope you guys are doing good down that a way!
@@JandSChainsaw Well, it's just special to me I guess. It prolly wouldn't impress loggers, or guys that's been running saws for twenty years, lol, but it does (did) good. Update! When I sent that comment, I was starting to tear the damned thing back down because it had sucked in the intake gasket, like they do. Trying to be brief here, but I made a gasket, then used ultra thin hondabond to make damned sure it wouldn't do that. It did. The oem gaskets are hard to come by, but I finally got my hands on them, I ordered 3. The crankcase was fulla crap of course, so I washed that out best I could. Got the jug back on, threw my degree wheel on it. I have 107° atdc exhaust roof, 36° blow down, Intake opens at 76°. I think I might better get in the 98-99° neighborhood on the exhaust. I didn't mess with it before, because I was timid this winter when I started porting. I'm learnin'. I love your method of polishing. It works friggen awesome. I just got done yesterday porting my 55 rancher. Pretty happy with how that turned out. It rained it's ass off up here for two days so I been buttoned up in the shop. Lol. So anyway. Thank You so much for your help on stuff.
I'm inspired! I have an old 61 that runs just like that saw did on the 1st cut. I barely ever use it anymore because I have faster saws. But, base gasket delete, a little intake, and a little widening and clean up for flow ... and probably new rings, and I may start using my old (1st firewood saw 25 years ago) again. Great job ... and I liked the rant about the super rough intake grinding. You don't want gas pooling, but nothing that causes turbulence either. I definitely learned something, so thanks!
Used to port race engines. Insides of intake was left rough outsides polished. The idea was to create equal velocity, so the longer run (outside) neeeded to be sped up, hence polished. A flow bench was very helpful to keep guess work to minimum. Still quite a bit of artistry involved, backed up by science. Thanks for your video. We also matched intake to head, and gaskets. U can see a extended gasket on a scope pattern. Creates turbulence and sets up a frequency seen on scope.
Haha! Just a little rant! I believe little brother is gonna be tickled! I am! You can build you one just like it! Talk to ya soon buddy!👍👍👍👍🇺🇸🇺🇸🇺🇸🇺🇸🙏🙏🙏🙏
Blunt and to the point is what I prefer. Your response to me way back was moving fuel/air as fast as possible is the goal! Roughing up is taking a step back (your comment back to me). I may be going to the extreme, using green compound with a polishing bit and going for mirror on exhaust, we shall see. Intake polished up to 1200. All on 272xp with the glass smooth factory plastic intake. 😊 I have asked several why not rough it if their theory calls for rough.
@@JandSChainsaw What I started doing with my 046 build and ended up a180 degree turn around from the way I started is very similar to the way you built this saw.
@@ClintsHobbiesDIY I've done alot of saws alot of trial and error alot of mess up found what works and what dont..ypu done a good job that saw is strong
@@JandSChainsaw Thanks. I was really lucky that Pat stepped in when he did. A lot of what I was doing didn't make good sense to me. He explained why and saved my sanity. There is more than one way to build a saw and I'm on the right path. I just need more experience.
1 did one of mine with a chrome bore hi performance cylinder made lots of difference...a lil port smoothing also..you need the comp release to start now..24 in bar full skip it works good
What works for you doesn't always work for others. The correct type of turbulence is a plus it speeds up the airflow. Also one more thing why does stihls intake boots have what appears to be small spikes in them. What does that do it causes air circulation spots resulting in turbulence that causes the mix/air that travels through the center of the port to speed up a tremendous amount. A smooth port allows for more low-end torque why because it's moving slower just like the engine is. A rough port allows for more higher rpm torque witch speed up airflow doing the same as the engine moving the power band to a high rpm.
No the weird bulge right infront of where the intake boot slips onto the cylinder is for flex. If you pull the intake boot from each end you can see it open up and it becomes larger. That is forthe boot to flex. The ribs in the intake boot is for speeding up air/mix to cause it to travel faster.
I’ll be 70 my next birthday, I’m so thankful that I still have a mindset to try new things and the humility to admit I may have been doing it wrong for 50years. As he said proof is in the pudding, don’t knock it until you’ve tried it. Just because it’s on the internet doesn’t make it fact, question any theory by testing for yourself.
Thanks and I have multiple times. I will not to this day leave a intake port smooth unless it's direct injection and moving just air. A polished finish on the port does not provide the increase that one might assume. In fact, often within certain intake systems, the surface is intentionally textured to a degree of uniform roughness to allow for fuel deposited on the port walls to evaporate quickly, due to the increase in surface area.
