Stihl 034 Super Cylinder options

[old-cat]

I've used Tecomec and Meteor cylinders both but never again. You can get more power and better quality with OEM

 

[Mad Professor]

I've used Tecomec and Meteor cylinders both but never again. You can get more power and better quality with OEM

How so with Tecomec? My 038 stuff looked and ran as good as OEM. Want to see pics and measurments?

 

[old-cat]

There were three issues with the one Tecomec cyl. kit I used, for an 036. It looked like something had gone wrong inside the combustion chamber. There was a gouge where something had collided? in there. The ports were identical shape as the 034 ports unlike 036 ports. Then when I installed the cylinder the mounting bosses for the 4 screws were not machined flat, so the screw heads were forced sideways, bent.

 

[Silverdart]

How long ago was that kit used? Those defects sound severe enough to warrant not wanting to risk one. I'm looking at a parts saw on ebay right not. It looks to be a non pro 036. Pict of piston through exhaust looks ok. Has muffler and cooling plate so all I need to mod is cover. Question is, can a cylinder be shot but piston look ok at exhaust port? Seller doesn't want to investigate, as is only.

 

[old-cat]

The 036 non-pro is my favorite 60 cc saw. You don't have to mod the cover unless you want a comp. release. But that isn't needed.

 

[watsonr]

There were three issues with the one Tecomec cyl. kit I used, for an 036. It looked like something had gone wrong inside the combustion chamber. There was a gouge where something had collided? in there. The ports were identical shape as the 034 ports unlike 036 ports. Then when I installed the cylinder the mounting bosses for the 4 screws were not machined flat, so the screw heads were forced sideways, bent.

Did you contact the seller and ask for a replacement or ?? The Tecomec line is some of the best stuff going, maybe you had one bad item that slipped by the QA. At one point Meteor and Tecomec were done by the same engineer and then the split to form the two companies.... something about personal differences. Both highly respected for quality work and dependable products. Your issue is not the norm from what I've seen from either of those two company's... why I asked what did you do about it.
Randy

Put a plug in the decomp hole.

 

[blsnelling]

Question is, can a cylinder be shot but piston look ok at exhaust port? Seller doesn't want to investigate, as is only.

Unfortunately, yes. The lining can be worn through from use, usually on the intake side due to dust.

 

[old-cat]

Did you contact the seller and ask for a replacement or ?? The Tecomec line is some of the best stuff going, maybe you had one bad item that slipped by the QA. At one point Meteor and Tecomec were done by the same engineer and then the split to form the two companies.... something about personal differences. Both highly respected for quality work and dependable products. Your issue is not the norm from what I've seen from either of those two company's... why I asked what did you do about it.
Randy

Put a plug in the decomp hole.

None of those issues were serious enough for me to worry about, but I DON'T consider the aftermarket cylinders to be at the quality level of OEM.

Unfortunately, yes. The lining can be worn through from use, usually on the intake side due to dust.

Especially with an 036 non-pro. They had a mesh filter instead of the flocked one.

 

[watsonr]

None of those issues were serious enough for me to worry about, but I DON'T consider the aftermarket cylinders to be at the quality level of OEM.

Did you run the kit as it was? You feel that way because of performance or the quality of the product?

 

[old-cat]

I put the Tecomec kit on an 034 and it seemed to run VERY well. BUT, I expected a supposedly 036 cylinder to have ports that were shaped the same as 036 ports. Also the unmachined screw bosses were a little scary. Also the last Meteor cyl. kit I got was poor quality casting. The transfer ports was higher on one side than the other, way different! Easily visible from the outside, even.

 

[watsonr]

Thank you. I'm always trying to find info on why or why not as I find it interesting. If the cylinder runs well, does the port shape matter as long as function is acceptable?

Over the last couple years, my eye's are open to seeing things from a different prospective. If I want OEM performance, then a copy is what I want. If I want better performance, then maybe I want something different. If we follow OEM, no improvement will ever be made until OEM finds the gain... and if there is no reason to experiment.... see my point.

Why do saw builders port saws... because they want more than OEM and what do they really do.... change port shape.

 

[Streblerm]

The 036 non-pro is my favorite 60 cc saw. You don't have to mod the cover unless you want a comp. release. But that isn't needed.

you absolutely will have to modify an 034 or 034s top cover if you put an 036 cylinder on it, regardless of whether it is a pro cylinder or not.

 

[Silverdart]

Well, I bought the parts saw off Ebay. Oem cylinder pictures looked good so fingers crossed I will have a runner soon. I'll update once I get it. Parts saw will give me piston, cylinder, muffler, cooling plate, and hopefully whatever else I may need. Looks to be a late 90's non pro 036.

 

[Silverdart]

The parts saw came today. Made sure the cylinder was clean and it pulled 160psi. Removed the cylinder and it looks great. It's a non-pro 036 Mahle cyl and piston. Now to clean it all up, check the squish and make it run. The parts saw crankcase looks pretty good as well. Very clean inside with no signs of excess heat. The bearings have a little play though. How much is allowable?

 

[nmurph]

Up and down (radial)- none

 

[Silverdart]

I figured as much. The 034 Super crank bearings are nice and tight, I will be using it's crankcase. Maybe I'll put the 036 case on eBay for someone who wants to change the bearings.

 

[Silverdart]

Well it's all back together and runs great. 170 psi cold, .030" squish with stock gasket. Used the 036 muffler and cooling plate. Cut the top cover to fit and trimmed a 1/16" off the fwd rubber bumper. All in all a good cheap build, thanks for all the input, collective knowledge and experience is hard to beat.