Part Three: The Transfer Ports

[spencerpaving]

Dolmar?

No...stihl...project I'm working on..I usually stick with about 28-30* blowndown...but it's missing something...I think I need to raise the trans....just wondering if 40*is way to much?

 

[Hedgerow]

No...stihl...project I'm working on..I usually stick with about 28-30* blowndown...but it's missing something...I think I need to raise the trans....just wondering if 40*is way to much?

I'd have to say, I've never run A saw with 40° of blow down. 33 maybe, but not 40.

 

[spencerpaving]

Another thing to think about is chainsaw cyls are compact by design..especially in the transfers...but we have to work with what we have unless someone could cast something with more ports...like Varney did

 

[spencerpaving]

I'd have to say, I've never run A saw with 40° of blow down. 33 maybe, but not 40.

It runs well...but is just missing that certain something...I think it might be to much

 

[spencerpaving]

Side question. ...is 40*blow down too much?...what would the effects be?...asking for a friend

I forgot to mention this is a piped saw not a muffler saw

 

[Chainsaw Jim]

A stock 361 has 30°/37° blowdown.

 

[Stump Shot]

I will say one thing for open ports, they are easier to work on, especially for a beginner like myself. Kinda why I picked that to start with. Also after working with them, seems that they can make good usable power, even if not the same power as its closed port cousins. Look at all the old McCulloch's for example that people still ooh and ahh at yet today.

 

[Redfin]

It's a popular belief that chainsaw engineers are all knowing gods, but they actually have several people telling them how to do their job... including the epa. They also need to make the design in a way so high scale production casting can replicate it without a considerable amount of additional machine work.

None of those obstacles apply to us. Most of those engineers are building race saws on the side for fun and that's where you'll see how they compare to our end of this industry. I've noticed some pretty mixed reviews in the past over some of the examples.

I agree with what you said Jim but will add that these engineers also have to consider "tunability" for the average consumer.

Edit: or lack of tuning on the part of the end user.

 

[Chainsaw Jim]

I agree with what you said Jim but will add that these engineers also have to consider "tunability" for the average consumer.

Edit: or lack of tuning on the part of the end user.

That's true but not necessary when they have us. Lol

 

[RIDE-RED 350r]

Yes they are widened all the way. If you saw them next to stock ones you'd be really surprised.

Well there goes my theory!! Lol!

Seriously though, that saw impresses the hell out of me every time I run it. Couldn't have done it without your help.

 

[Mastermind]

Side question. ...is 40*blow down too much?...what would the effects be?...asking for a friend

I'm not sure.....my piped 064 has 35° of blowdown.

 

[Deets066]

Transfers...... depends a lot on the saw. On duals I'm not gunna open the lowers at all. That lip you speak of on the bottom.




I like to fill it in and smooth out that transition instead of grind it off

 

[Mastermind]

Transfers...... depends a lot on the saw. On duals I'm not gunna open the lowers at all. That lip you speak of on the bottom.

View attachment 68614


I like to fill it in and smooth out that transition instead of grind it off

And.......Deets hybrid is the best one I've ever ran.

I think you are onto something.

 

[Deets066]

On Quads..... what has worked for me is to open the lowers a little and case match. To an extent.

Mostly raise the uppers but only widen for direction of flow not as to gain area

 

[Deets066]

And.......Deets hybrid is the best one I've ever ran.

I think you are onto something.

That was the only thing I did to the entire transfer tract..... bone stock

 

[CJ Brown]

Transfers...... depends a lot on the saw. On duals I'm not gunna open the lowers at all. That lip you speak of on the bottom.

View attachment 68614


I like to fill it in and smooth out that transition instead of grind it off

What are you using to fill that ledge?

 

[Deets066]

What are you using to fill that ledge?

Jb weld

 

[CJ Brown]

Jb weld

I looked on Amazon - there are so many different kinds! Can you tell me which one you have found to work best?

 

[t4driller]

The first husky 350 i did I hogged out the lowers and it had alot of rpm but not much torque. The second one I filled the riser with jb weld and you could really lean on it.

Sent from my SM-G930V using Tapatalk

 

[Deets066]

I looked on Amazon - there are so many different kinds! Can you tell me which one you have found to work best?