Author Topic: Poulan 330 3450  (Read 12238 times)

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Offline Cut4fun .

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Re: Poulan 330 3450
« Reply #390 on: December 02, 2017, 05:18:26 pm »
Done and tested. Just need to put rope in the other recoil.  Different clutch cover.

Took the tube out of the inside of the muffler on these.  Didnt drill this baffle out yet. Just removed screen.

Max is 13.8K but 12.8K was to my liking.





The 330 I found today on back lower shelf. Forgot about this one.   ::) :D :P

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Offline 3000 FPS

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Re: Poulan 330 3450
« Reply #391 on: December 02, 2017, 11:17:14 pm »
You have had a lot of those saws come and go.   
PP 505, 475, 445.
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Offline drumbum

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Re: Poulan 330 3450
« Reply #392 on: December 06, 2017, 02:44:54 pm »
So I guess the piston was backwards.

Yep. 2nd 3450 in a row like that.

I think I can add one more to that list.

Proper assembly- arrow points toward exhaust, right?
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Re: Poulan 330 3450
« Reply #393 on: December 06, 2017, 03:18:26 pm »
Hmmmm.   Here's a puzzeler.

Two pistons, pulled from my '07 330's when converted to 60cc, have ring gaps at exh. side.  One has bold arrow @exh. side, the other has 97 with EXH under and arrow.

My newest has 97 and faint EXH and arrow @ exh. side  with the ring gap on intake side.  WTF?!?!?!?!

Two pistons from '07 saws have slight casting bump in center.

Latest piston has a slight recess.

Ever seen this?

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Re: Poulan 330 3450
« Reply #394 on: December 06, 2017, 05:45:24 pm »
I have not taken a lot of 330 apart and never really paid attention.   The arrow though on the piston should point to the exhaust unless some one has been in it before and modified it for some reason to have the ring gap in a different location.   It really is about the ring gap being in a place so that it cannot hang up on a port.   
PP 505, 475, 445.
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Offline Cut4fun .

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Re: Poulan 330 3450
« Reply #395 on: December 06, 2017, 05:50:36 pm »
Yep I dont pay attention to arrows. I go by ring gap. Can see how that could mess a guy up if they are unsure and follow a misprinted piston.
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Re: Poulan 330 3450
« Reply #396 on: December 06, 2017, 06:05:53 pm »
If there is no pin offset in these saws, then the piston can go either way.  This saw was factory assembled with ring gap at intake side and run. Other saws were factory assembled with gap at exh side.  Cylinders are the same.

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Re: Poulan 330 3450
« Reply #397 on: December 06, 2017, 06:13:51 pm »
Thats wrong to run gap at ext on these. Plus the pistons have a pin in rear.

Need pics because I think your talking 330 3450 3750 380 pistons
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Re: Poulan 330 3450
« Reply #398 on: December 06, 2017, 06:36:20 pm »
What is wrong?

Offline drumbum

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Re: Poulan 330 3450
« Reply #399 on: December 06, 2017, 06:57:12 pm »
Thats wrong to run gap at ext on these. Plus the pistons have a pin in rear.

Need pics because I think your talking 330 3450 3750 380 pistons


I'm not sure I get what you are saying.

 

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