Bench talk, cylinder and piston machining.

[@joebrent2762]

Love to hear you explain the method to your madness!!! Just another way to get people excited about souped up power saws!!! Awesome job!!!

[@conormichael7964]

Hey Tinman, just ordered from Ryan at wolf creek and can I just say hes amazing to deal with. Amazing response time and he shipped it extremely fast. Much love

[@tinmanssaws]

Ryan is a great guy.

[@MemphisMechanic]

I chipper a cylinder porting it for a Stihl 044. He sent me an invoice for a replacement, and then he actually shipped it before I paid!

[@DaveyBlue32]

I freakin love those new led bulbs!!! I feel like I’m doing surgery in the shop now! I put one in our kitchen light socket over the table and I had to take it out and put the single bulb back in!!! It was like sitting in the operating room trying to eat dinner!!! LMFFAO!!! Always love when there’s a TinBasher video in the news feed!!!

[@tinmanssaws]

Thabks for being here and always typing good counts buddy!!

[@jeffc9354]

Great info awesome video tinman can’t wait to see that finished ❤

[@tinmanssaws]

Hey Jeff

[@jeffc9354]

@@tinmanssaws hey tinman hope all is good

[@kingsaws]

Dude you sure are good at explaining things

[@aaronpowell4885]

Awesome information with excellent explanations and visuals👍🏻 thanks for putting this together and sharing!

[@olefugle]

Excellent video. Good to have you back at the bench talking Tinman style porting. Thanks. What i really wish for is a video about timing numbers and porting smaller saws 45-50cc. In my area everyone has a 45cc.

[@charlespeacock8360]

Thanks for sharing your experience.

[@robertdouglas3456]

Great info TinMan! 🥰🥰

[@jacobhein4319]

Thats interesting how pop-ups can mess with transfer flow. I would think a domed piston might be the best of both worlds, increasing compression while having less of an impact on flow!

[@tinmanssaws]

Thank you Jacob, a dome is often the best all around for sure

[@skravlesen]

Sweet video as always Tinman! Could you do a in depth video of how you clean your saws in a upcoming video sometime? Currently working on a 266SG for my brother, and that's a really dirty one. And I haven't found the moves to get it close to as clean as your ones. Hope all is well with the whole family. Have a good one👍

[@tinmanssaws]

For really dirty saws I use straight gas, a brush and compressed air.

[@skravlesen]

@@tinmanssaws Thanks a lot! Haven't tried stright gas, just diesel. And that doesn't work quite as good with all of the hard grime

[@MemphisMechanic]

If you know someone with a parts washer, start there. It works wonders with much less mess. I use “gas and scrub with wire brush” on anythin which the oarts washer doesn’t remove.

[@erikredbeard87]

Really good video. It falls right into the work I just got done on my 272xp. Ran it for about 45 minutes today. Everything seems good so far. Anyways, again good stuff Tinman.

[@tinmanssaws]

Usually if they last that long they are good to go.

[@erikredbeard87]

@@tinmanssaws that's good to hear. Lol, first one I did so I'm crossing my fingers

[@justinweaver8787]

Good info to know buddy thank u much appreciated.

[@tinmanssaws]

You're welcome

[@imperfectcuts7028]

Love the content tinman can't wait ti see it run.

[@CharlesBrisco]

I favor long bd an I get a lot of crap for it but I'm just gona keep doing what I think they need I seem.to get ok results

[@tinmanssaws]

You build strong saws for sure buddy

[@jacobhein4319]

i really think it depends on what type of saw that you want to build. im sure theres really nice shorter bd saws and at the same time im sure thers really nice longer bd saws. while both can be nice they are also going to be different, and thats ok!

[@Michagan_outdoorsman_James]

howdy tinman hope your having a blessed week and a had a great weekend

[@DaveyBlue32]

Yeah…13k is about 216 times up and down per second!!! It’s definitely moving… that’s why I changed my porting Philosophy…. I look at it like it’s taking 200 little breaths per second… I don’t hog stuff out anymore… I just try and smooth the flow and remove any obstacle’s from the pathway…or passageway’s!!! The intake volume is only so much so it’s not a really big beneficial to hog out the exhaust side… I measure the windows with damp sand… then I measure/kinda guess at the volume of the transfer’s… to figure out the cubic volume per stroke… or per each breath!!! I love chainsaw engine’s!!! I’ve got an 86’ Honda elite 250 scooter and I’m going to tear it down and try and port and polish/ zip it up this winter… I want to get into the software so I can build a 372 expansion pipe… then I’ll be able to make a pipe for the 250… I’m 6’ 325lb. And it’ll run 75-80 with me on it in a block… I’m just interested to see if we can do that in 100’!!! I really wish I could find a 78’ Honda 750 super sport…quad jet carb engine… so o could zip it up… I want that engine in a little chopper looking build!!! LMFFAO!!! Ape hanger’s and my 750 Honda engine!!! 😂😂😂👍🇺🇸🇺🇸🇺🇸

[@timaustin110]

I'm coming back to finish watchin this

[@Ti22Vehicleservices]

Please show us the finished cylinder! very interested to see the lower transfers and how much you cut the cylinder skirt away. does it end up looking like the 372 cylinder?

[@garygardner6536]

I have an Jonsered 670 super which I reckon is great except for blocking the air filter, I can actually fell the air it's pulling on my arm through the gaps in the cover. My question is would it be detrimental or an advantage to fabricate a muffler that flows better and what size outlet should I use, or two, I can weld up with oxygen which is real handy so the sky is the limit.

[@billyb.9878]

What about the chinesism 288xp kit?? I know you got way more important stuff going on. Just wondering what ended up being replaced. With oem stuff. If ya get a chance. Glad the family is good & you take care. 🙃

[@Ketis1985]

Popup piston also effects to squish velocity in negative way so thats a other minus for them.

[@anthonyjoannou1019]

Hello, brother Tinman Im in need of a part for my 262xp im looking for the brake spring in my clutch cover?

[@martyrutter3630]

Roughly how long does it take to complete a saw like this one for Hogan? Nice video my friend. 👍👍. Hope all is well with your family 🙏

[@tinmanssaws]

2 to 3 days probably. Then break in and then it's done

[@tjhughes66]

Just got my 288xp kit

[@talon7880]

are they std case bearings to be pulling a long bar or do they need to swapped out with ceramics to handle the extra load?

[@tinmanssaws]

I use skf or FAG 6202 c3 bearings in all these saws. They seem to last a long time.

[@charlesboston1]

i have a lathe , and most guys can get access to one if they try really hard ;) problem is not many people know how to run a lathe properly

[@shapeshifter7753]

Howdy Tinman. Any idea why they don’t make reed saws any more?

[@tinmanssaws]

Weight , cost and complexity would be my guess

[@shapeshifter7753]

Hey Tinman! Thanks for your reply! I sure like my ol reed saws. You may be right… 🤷‍♂️ To me they always seem to have better power 💪

[@rebeccarobinson7024]

Hay tinman have a quick question nothing to do with this video but it is a husky question lol here tge question i have a 545 mark2 handle bend forwards i have a jonsered 2245 part saw will the handle fit on the 545

[@tinmanssaws]

I'm not sure, generally jonsereds have different handles then husqvarna

[@rebeccarobinson7024]

@@tinmanssaws ok

[@charlesboston1]

what timing numbers would you use on a 288 ? i'm waiting for some parts to come into rebuild the one i have

[@tinmanssaws]

It depends on what you want to do with it and where the numbers start. Send me an email either your stock numbers and I can help you decide which way you want to go

[@charlesboston1]

@@tinmanssaws still waiting for the timing wheel i ordered to come in .... in the past i would just even out the ports and make them sit the same height in the cylinder to where they "looked good " ..... it had never occurred to me to use a timing wheel until i saw one of your video's a couple months ago .... i'll fire off a email on my day off on Wednesday ,thank you very much :)

[@MemphisMechanic]

A very vague guide for most saws in that class is 78-80 degrees intake, 20-25 blowdown, 100ish exhaust. Lots of exceptions to that. But somewhere in that neighborhood is where we often work.

[@mikebeatstsb7030]

Isit possible/ normal to use alternative cylinders & parts in people's saws? Say, perhaps a small engine bike or the likes..? Or is that just stupid and never be compatible anyhow.. Luke from England

[@conormichael7964]

I have done things like that, you just have to make sure that the timing is ok and there is plenty of clearance for the piston/rod/crank if everything fits it will work. Same as making a 90cc 372xp

[@tinmanssaws]

Lots of guys swap pistons and cylinders as well as stroke cranks for custom builds.

[@crperformancetucker5065]

So i fallow another porter and he has shown the machine work and how he figures what needs machined and has suggested that a person could have a local machine shop or have the cylinder sent out and machined. The do the actual port work themselves after a 3rd party did the machine work.

[@jasonreese4824]

Every time email them I get nothing back that is wolf creek saw shop and I can't find a phone number would you have it by iny chance.

[@ShriKaav]

Oh yeah, just keep reminding me that I don't have a lathe :'(

[@lumbearjack1439]

18 degrees blowdown would be great with a 100 exhuast roof 👍 the the best running saws from factory have blowdown under 20.

[@bmp0149]

Im not sure I understand. You could have just raised the exhaust port to increase the blowdown duration, its not a reason to drop the cylinder. What you got by dropping the cylinder was the possibility to do your exhaust retime while not loosing a heap of compression. I know you say you dont like high compression but I think you should also recognise that loosing compression is a bad thing. The piston popup is pretty much an acceptance that compression is desirable (if not just machine popup right off). Why not measure your cylinder pressures on various engines and see what the relationship is with how the saw runs ? With your big collection of saws there's great opportunity right there. I like compression myself, better combustion ----> more power. Fringe benefit is a better tolerance to part throttle fuelling ... zippy pickup.

[@tinmanssaws]

Based on my previous builds I needed to get 5 to 6 degrees more blowdown.. So if I just raised the exhaust to get that I would of ended up at 95 on the exhaust way too high..

[@bmp0149]

@@tinmanssawsThanks for reply. Right. That is obvious, I dont know how I overlooked it. Think I took the statement "i ended up with same tIming after machining " at 13:05 to mean all timing events, my mistake. I can see if you drop the cylinder and cut the piston crown, both by the same amount (to keep squish same) there no change to exhaust or transfer timing. However, as you machined the combustion chamber there is no longer the need to machine the piston crown by the same amount as the chamber... Now your exhaust and transfer timings have changed, both open later. So now you have the option to cut the exhaust roof and bring exhaust timing back to where it was, end result increase in blowdown. That I understand.... thanks gain for reply.