Tecomec pistons (PORTING HELP)

[Mkinslow]

Well it’s ordered boys. When I get it it’s still gonna be awhile for its a runner. Got some other small parts to get

 

[Mkinslow]

Maybe I can get this stihl 034 sold to support another husky build

 

[drf256]

I grabbed a few of the 44mm 026 slugs on a DOD deal.

I'll do a comparison vs. OEM vs. Meteor when I get them.

That MS360 piston above looks to have wider skirts. The meteor 036 slug and the meteor 046 slugs both have wider than OEM skirts.

 

[Mkinslow]

Dang arm twisters lol

 

[Mkinslow]

And thank you @Gentleman for you’re help my friend

 

[MustangMike]

While some pistons may be a bit heavier or lighter, I have found the biggest difference in weight is often in the piston pin. The AM pins are often not tapered like OEM. I use OEM pins whenever possible, but you must check size to ensure they are the same ... not always unfortunately!

 

[XP_Slinger]

Dang arm twisters lol

@RIDE-RED 350r is good at that. Nothing wrong with having a builder sitting for a while, just lets you plan it all out. I STILL have to build my 281 but that 254 jumped ahead in the line because it needed less money to get it going.

 

[Mkinslow]

@RIDE-RED 350r is good at that. Nothing wrong with having a builder sitting for a while, just lets you plan it all out. I STILL have to build my 281 but that 254 jumped ahead in the line because it needed less money to get it going.

No nothing wrong with it at all. I just get ready to hear it run and then it’s hard for me to slow down and chill out on them

 

[Keith Gandy]

I grabbed a few of the 44mm 026 slugs on a DOD deal.

I'll do a comparison vs. OEM vs. Meteor when I get them.

That MS360 piston above looks to have wider skirts. The meteor 036 slug and the meteor 046 slugs both have wider than OEM skirts.

I was thinkin the skirt looked a good bit wider also

 

[Stihlbro]

I have one in a saw running. No complaints here. I say just check it over good before installing.

 

[Mkinslow]

I have one in a saw running. No complaints here. I say just check it over good before installing.

Yes sir. When I get it in front of me I’ll check it over and post up pictures to see what y’all think as well so hopefully I want miss anything

 

[RIDE-RED 350r]

Compare all of the dimensions between the Tecomec and OEM. Overall height, pin to crown heights, skirt width, etc.

 

[Mkinslow]

Compare all of the dimensions between the Tecomec and OEM. Overall height, pin to crown heights, skirt width, etc.

I can put up the dimensions on the new one but I don’t have an oem to compare it too. But maybe someone has one we can check it against

 

[RIDE-RED 350r]

Absolutely! I thought you still had you OEM slug. At any rate, the specs on the new piston I'm sure will be helpful to others.

 

[Mkinslow]

No sir the cylinder I have was given to me by @Dub11 but yes I believe it’ll help a lot of us now and down the road

 

[Stihlbro]

I did a comparison almost 9 months ago but don’t remember. But I am running the tecomec. Tecomec piston was impressive especially considering the cost.

 

[Mkinslow]

That’s good to hear bud

 

[Stihlbro]

I also mocked up this jonsered 630 piston. Windowed, single ring and 48 mm. It was a shorter skirt. Piston pin to crown was exact, the good side is it would be more intake duration with just a piston swap. It was like 6 degrees more. Again it was several months ago. If you would like to mock this piston up, let me know.

Joey

 

[Mkinslow]

View attachment 103890
I also mocked up this jonsered 630 piston. Windowed, single ring and 48 mm. It was a shorter skirt. Piston pin to crown was exact, the good side is it would be more intake duration with just a piston swap. It was like 6 degrees more. Again it was several months ago. If you would like to mock this piston up, let me know.

Joey

Ok thanks. I’m still learning about duration and such in saws. But that’s why I’m here. TO LEARN and help were I can

 

[RIDE-RED 350r]

View attachment 103890
I also mocked up this jonsered 630 piston. Windowed, single ring and 48 mm. It was a shorter skirt. Piston pin to crown was exact, the good side is it would be more intake duration with just a piston swap. It was like 6 degrees more. Again it was several months ago. If you would like to mock this piston up, let me know.

Joey

My eyebrow raised when you said the J-Red piston had a shorter skirt! Sounds like that piston could play a significant part in building a strong 48mm 365! I would assume the J-Red piston is lighter too, which could also play well. How nice is instant +6 deg intake with zero grinding