Very interesting!
Thanks for posting this.Its something I have been wanting to try.I might start with a cheap 42cc poulan.
Thanks for posting this.Its something I have been wanting to try.I might start with a cheap 42cc poulan.
My first try at porting.
- Thread starter czar800
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czar800
ArboristSite Guru
Well I did more work on the saw here is the pictures
Got the saw running and trying to get it tuned, seems to lack fuel? Time for a bigger Carb.? Or my timming numbers too far?
Got the saw running and trying to get it tuned, seems to lack fuel? Time for a bigger Carb.? Or my timming numbers too far?
Looks good on my end. Wish I could help you with your questions. I know the 024/026 carb is a bottleneck, but it isn't because of fuel delivery, the throat of the carb is too small.
gink595
Addicted to ArboristSite
You shouldn't have to remove your flywheel to put your degree wheel on. This is how I was shown to get a degree wheel on the easy way. Ditch the paper cut out degree wheels and go buy one for 10-12 bucks, go to the local hardware and buy you a cheapo keyless drill chuck and mount the wheel to it, should just take a metric bolt. Now you have a self centering quick and easy set-up, other than finding TDC.
komatsuvarna
Arboristsite MVP
How much more did you do?
You were at 166 exhaust duration,100 transfer duration, 146 on the intake, and 33 degrees of blowdown in your previous post. I dont know what #s that should run, but they sound a little high to me,,,the exhaust anyways.
Here's a bump.
You were at 166 exhaust duration,100 transfer duration, 146 on the intake, and 33 degrees of blowdown in your previous post. I dont know what #s that should run, but they sound a little high to me,,,the exhaust anyways.
Here's a bump.
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komatsuvarna
Arboristsite MVP
You shouldn't have to remove your flywheel to put your degree wheel on. This is how I was shown to get a degree wheel on the easy way. Ditch the paper cut out degree wheels and go buy one for 10-12 bucks, go to the local hardware and buy you a cheapo keyless drill chuck and mount the wheel to it, should just take a metric bolt. Now you have a self centering quick and easy set-up, other than finding TDC.
Thats too easy!!!
Just kiddin, I like it,,, think I might just do the same.
czar800
ArboristSite Guru
Thanks Andy, I don't know when the carb becomes a problem? If it even will on the kind of port job. I need to take more time and try to tune it again. I just hope i didn't cross the line on my port timing. (whens the next gtg?)
czar800
ArboristSite Guru
I don"t pull the flywheel, i use the puller to center the wheel ( sorry no pic)
The only work i did was in the transfers.
Thank guys for jumping in (This is my first saw) and helping.
The only work i did was in the transfers.
Thank guys for jumping in (This is my first saw) and helping.
komatsuvarna
Arboristsite MVP
You didn't raise the exhaust?
czar800
ArboristSite Guru
Sorry for the confusion. I did raise the exhaust and lower the intake. The only work i did after degreed it was in the transfers.
komatsuvarna
Arboristsite MVP
I gotch ya.
czar800
ArboristSite Guru
where can i go with this saw # wise? (you don't have to tell me yours if there top secret) I have been reading a lot and have found some great threads but no real #s for a 024. Like i have said this is a play saw.
komatsuvarna
Arboristsite MVP
To be 100% honest with ya, I don't know. I'm new to this stuff and still learning. Only saws I've messed with is a 372 and a 395, and there not that high on the exhaust. Just guessing here so don't set this in stone, but 166 sounds high on the exhaust to me. It may be fine for a play saw,,, but I cant really say.
Someone will be through that knows though.
czar800
ArboristSite Guru
Thanks, I was thinking it was high also, most seem to stay in the 150s. on exhaust from what i have found. Well i am very new to this stuff and have a ton to learn. Thanks again mike
Your transfers are really low. I'd raise them up at least 7° and maybe 12°, to match your exhaust and get your blowdown to 20-25°. I'd also take the intake down as low as 80°.
machinesaw
ArboristSite Lurker
timing
where did u get that timing wheel? i need one
where did u get that timing wheel? i need one
czar800
ArboristSite Guru
Thanks brad, that just what is was looking for.
I made the wheel you can print it out.View attachment 178261
czar800
ArboristSite Guru
Hear is a video of the saw with the numbers that i posted.
When I go back in and change to your #s I will post a video. I thank you all for the help. It sounds lean again in the video? I have pulled the plug its nice and brown. I know i need to test in the same wood and hold it better. I will get setup in time. ( wood is Cherry)
[video=youtube;x5ELTx8TLDc]http://www.youtube.com/watch?v=x5ELTx8TLDc[/video]
When I go back in and change to your #s I will post a video. I thank you all for the help. It sounds lean again in the video? I have pulled the plug its nice and brown. I know i need to test in the same wood and hold it better. I will get setup in time. ( wood is Cherry)
[video=youtube;x5ELTx8TLDc]http://www.youtube.com/watch?v=x5ELTx8TLDc[/video]
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