Fin loss on cylinder, how much is too much?

[Duane(Pa)]

Herman, I don't like this. His problems don't have to be your problems. Set him straight or send this job down the road... My .02

 

[fearofpavement]

Herman, I don't like this. His problems don't have to be your problems. Set him straight or send this job down the road... My .02

They're not my problems. I'll do whatever he wants. I don't usually work on anyone's saws but my own but since he has purchased saws from me in the past I'm willing to do this. I'm not a repair shop and although I get asked quite often, I make it clear that I'll buy your broken saw but won't fix it for you. This is a hobby for me and there's not enough money in it to make it a business. (in my opinion)

 

[Duane(Pa)]

Looks like a can of worms to me...

 

[T.Roller]

If he's paying you to do it then I'd do whatever he wanted. I'd advise him not to use that second cylinder but if he insisted then do it or not. Personally I wouldn't run the 2nd cylinder but I'd have no problem running the first one.

 

[Stump Shot]

They're not my problems. I'll do whatever he wants. I don't usually work on anyone's saws but my own but since he has purchased saws from me in the past I'm willing to do this. I'm not a repair shop and although I get asked quite often, I make it clear that I'll buy your broken saw but won't fix it for you. This is a hobby for me and there's not enough money in it to make it a business. (in my opinion)

There are a few guys here that can weld them back up for you. Otherwise whatever you do, I would talk it over first and get everything on the table first. If it starts getting too sketchy and uncomfortable for you, I don't think there is anything wrong with passing on the whole affair.

 

[Duane(Pa)]

I mean, stuff bends before it breaks. The skid steer won fair & square.

 

[fearofpavement]

So I communicated with the guy and he decided he wants both of them fixed with aftermarket parts. I'll put a Huztl cylinder kit on the broken fin saw. He should be able to get them both back on the road for about $550 which is half of one new one. I guess seeing that both of these were run over, "on the road" was probably a poor choice of words...

 

[fearofpavement]

I did tell him there could be unknown damage that may show up later... One of the crankcases was packed full of clay. I'll need to clean everything up before assembly.

 

[drf256]

I’ve heard of people running jugs with nearly no fins with no problems. They theorized that the intake charge cooled the saw more than the fins did. Never did it myself.

Welding those fins on would be quite a job. I stopped doing that after the last one I did for a pal that came out simply atrocious.

The top one or two is an easy job, but likely an unnecessary repair anyway.

 

[Fish]

Smoke two or three cause they don't last long.

You have never been in Ky. I would guess.

 

[bwalker]

I would have him spring for a new OEM top end. Period. It's a working saw that will be ran hard.......it needs the cooling fins intact.

Sound advice.
But with that said I had a 7900 get crunched by a skidder and no cyclinders were available at the time. I logged with it for 7 months with no apparent issue.

 

[Mastermind]

Ship me the other jug for a nitro saw build.

Ken.......do you have any saws out here in people's hands that you built for them? Videos? Build threads?

I ask this because I've yet to see any saw that you did any work at all on. Before you hang out a shingle saying you are capable of building "nitro saws" I'd like to see some of your work.

 

[Lightning Performance]

Ken.......do you have any saws out here in people's hands that you built for them? Videos? Build threads?

I ask this because I've yet to see any saw that you did any work at all on. Before you hang out a shingle saying you are capable of building "nitro saws" I'd like to see some of your work.

Shingle.....hum.
More than capable but lacking tooling these days. That is a big problem but looking for a local guy.
Built and sold five maybe six ported saws. Quit doing it five years ago. Built and used plenty ported saw for me. Toasted a few of them. Toasted a few nitro saws to. Built and sold one nitro saw years ago, like twenty. Currently collecting parts.
Video
Nope
No build threads and I'm not doing one.

Nobody ever wants to show me anything on race saws.
Asking no one to help me just looking for future parts. Offered to help others, they declined. My work stays private. I'm not here to impress anyone.
Someone in your ear?

 

[Mastermind]

Someone in your ear?

Not at all. Just reading your posts. Sounded like you were offering to build the man a nitro saw using just a busted up jug......

I've not seen you making intake blocks on your mill.......or two piece heads on your lathe. So......naturally I was wondering how the heck you were gonna take a busted jug and build someone a nitro saw.

That's all.

 

[460 magnum]

 

[Lightning Performance]

Not at all. Just reading your posts. Sounded like you were offering to build the man a nitro saw using just a busted up jug......

I've not seen you making intake blocks on your mill.......or two piece heads on your lathe. So......naturally I was wondering how the heck you were gonna take a busted jug and build someone a nitro saw.

That's all.

Let me clearer. I am not offering to build anyone anything. Just asking about acquiring a broken jug like many times before. Not looking for work. Not looking to bother anyone. I'll delete it.

 

[Mastermind]

Let me clearer.

Now that.....that would indeed be a blessing.

 

[fearofpavement]

I finished assembling the two run over saws today. Now I need to test them. I left both broken fin cylinders as is and we'll do some "testing" to see if the fin loss was too much. If it burns up, then we know it was.

I used tank handles from Farmertec. The fit was ok but the control lever had to be changed on both of them as it was impossible to set the choke without helping by moving the choke plate itself. I switched the parts from the broken oem handles. Both of the saws suffered this same defect. The tank handles did not come with fuel caps fwiw.

Also, on one of the tank handles, I couldn't get the saw to stay running (it would make an initial start and then immediately bog and die.) Turns out the aftermarket supplied line was pinching. I installed the used oem line and it worked fine. This was after an hour + of dinking around playing musical carburetors, disassembling and cleaning carbs and what not.) Once the oem line was on, everything ran great. On the second saw, the aftermarket line seemed to work fine.

On the plastic Farmertec top plastics, the brass bushings did not come with it and I had to remove the ones from the broken oem pieces. If someone is "missing" a top cover and gets one from Farmertec, it's going to be incomplete.
I also used Farmertec air filters, air filter covers, wrap handles, recoil starter, clutch cover, etc. Everything else seemed fine for fit/function. It took me 8 hours to bandaid these things together. (plus about 2 hours for the initial disassembly and assessment.)

 

[BuckthornBonnie]

Nice. Ditch that other AM fuel line, though.

 

[Huntaholic]

Im running a 390xp that I crushed several days ago and rebuilt from the crankshaft up basically. It has 4 or 5 of the top fins broke off but since its my saw, I crushed it, I fixed it back, so I decided to run it and see what happens. Ive cut somewhere around 30,000 ft with it in the last few days since the rebuild and its doing fine. If it ends up frying the top end, I will replace it then. The way I look at it is that every dollar it makes me between now and meltdown is free money.