Stihl 029 super to 039 conversion

[Mark71gtx]

I did this muffler mod to the 029 I converted to a 039 yesterday. I have a nasty flu bug and did light duty yesterday. Today I feel worse.

It seems to be more responsive since the muffler mod. I look forward to cutting some wood with it.

Glad it is working out for you. My 039 felt like a complete dog until I opened the muffler up. Be sure to retune the saw. Now that it can let more volume out, it can take more volume in.

 

[Gentleman]

hoping he'll be around this weekend or next. I'll ship the pistons back as soon as we have the samples ready. Unless you want the samples field tested before shipping? @Gentleman

I only have one 290/390 chassis in the shop right now believe it or not... LOL!

That sounds good. Let me know if you need a saw to test it on. I have one here.

 

[Black Dog Chainsaw]

@Gentleman Shaun says we'll aim for shortly after the new year.

 

[kkemp]

Well bad news on the vac test . Crazy thing is leaking around the oil seals. Their oem maybe I installed them wrong ..

 

[Mark71gtx]

Did you install them dry, or put the sealant used to seal the clamshell around the outside of them?

 

[Dub11]

bummer can you put sealant around the seals? or was it leaking at the crank?

 

[kkemp]

I used sealant around them . pto side was leaking at the crank . Other side was leaking around the outside. I done a little research and I guess there's 2 different kinds ? Didn't know that . The ones I have I can change with it assembled .

 

[Dub11]

well learned something new hope I dont run in too that.

 

[kkemp]

Either one should not have leaked though .

 

[Dub11]

How did the surface of the crank look? was just thinking of how a rear main seal on a small block chevy will wear in to the crank

 

[kkemp]

Crank looked good . At least to me .

 

[Dub11]

It was just a thought and you would know maybe just bad seals ?

 

[Black Dog Chainsaw]

I always use a red scotch brite pad to clean the clam shell and the crank before installing. I get the cheap green oil seals from HLS and they have never failed me ye. I run a little sealant into the area where the oil seals and clams meet but not around the whole oil seal. The green ones have 4-6 ridges on the outside to help seal it so no reason for sealant.

FYI these are on sale for $1.34/pair right now.

 

[Mark71gtx]

Cross Performance 039 cylinder kit is on sale for about $40 right now too...

 

[kkemp]

I ordered a couple of those cross performance cylinder kits . Plan to put it on my other o29 . See if there's any difference vs the one im doing now. I ordered oil seals too so I guess this build is on hold till they arive .

 

[kkemp]

Well the oil seals came today . Got em in and it passed vacuum test. So now just got to get it back together .

 

[stihl_head1982]

Very well. Let us know how the test run comes out.

 

[kkemp]

Ok. I have a problem . It's started a couple times but just dies . Doesn't sound right at all . . Turned the saw on the side and gas leaked out where the hose enters the tank . Could that mess up the vacuum in the tank enough to make it not run right ?

 

[BigRed96]

Ok. I have a problem . It's started a couple times but just dies . Doesn't sound right at all . . Turned the saw on the side and gas leaked out where the hose enters the tank . Could that mess up the vacuum in the tank enough to make it not run right ?

Did you use an aftermarket fuel line or oem?

 

[kkemp]

It's the original yet . I thought it was good but it's leaking a little bit .