The Forestry Forum is sponsored in part by:


Forestry Forum
Sponsored by:

TimberKing Sawmills

Toll Free 1-800-582-0470

LogRite Tools

Norwood Industries Inc.

Sawmill & Woodlot Magazine

Your source for Portable Sawmills, Edgers, Resaws, Sharpeners, Setters, Bandsaw Blades and Sawmill Parts

EZ Boardwalk Sawmills. More Saw For Less Money! sponsored by Northeast STIHL

Woodland Sawmills

Peterson Swingmills

 KASCO SharpTech WoodMaxx Blades


Sawmill Exchange

BRUTE FORCE Authorized Dealer

Woodshax Outdoor Vending Solutions


Council Tool

Baker Products


Author Topic: Any Experience with Compression Restore Additives?  (Read 332 times)

0 Members and 1 Guest are viewing this topic.

Offline Chefblair

  • member
  • *
  • Posts: 9
  • I'm new!
    • Share Post
Any Experience with Compression Restore Additives?
« on: October 09, 2018, 09:13:58 AM »
I have a box store Poulan Pro that won't start due to low compression. I put new ring on what is a clean, scratch-free piston and cylinder. Didn't change compression at all >:(  What else could be causing top head compression loss? I sealed it up with good liquid gasket and spark plug treads in tight. would love to have her turn over and make the rebuild worth the time and effort. 

There is a product called RVS Power that claims their chainsaw nanotech oil will fill in gaps and restore to near factory specs. Snake oil or worth the $30?  Don't really care about this saw as it gave me 15 years of good service but would like to have it as a back up to my Stihl 28 WB

Offline sawguy21

  • Senior Member x2
  • *****
  • Posts: 9580
  • Age: 69
  • Location: Enderby B.C. Canada
  • Gender: Male
    • Share Post
Re: Any Experience with Compression Restore Additives?
« Reply #1 on: October 09, 2018, 11:33:43 AM »
Once they have your $30 they don't care whether it works or not. If a new ring doesn't cure it there must be some serious wear. Have you checked compression with a gauge?
old age and treachery will always overcome youth and enthusiasm

Offline dougand3

  • Senior Member
  • ****
  • Posts: 415
  • Location: North Alabama
  • Gender: Male
    • Share Post
Re: Any Experience with Compression Restore Additives?
« Reply #2 on: October 09, 2018, 12:57:20 PM »
For $28, you can get a new topend. Search web for Partner 350 cylinder. This is for a non strato Poulan (2004 and earlier). A strato Poulan (2005 and newer) topend is AKA McCulloch 842. Costs ~$48.
Husky: 272xp, 365, 261, 61, 55 (x3)
Stihl: 036, 026, 011AVT
Poulan: 4218, 2000

Offline HolmenTree

  • Senior Member x2
  • *****
  • Posts: 3717
  • Age: 60
  • Location: Manitoba
  • Gender: Male
  • "Been there, done that........and still learning"
    • Share Post
Re: Any Experience with Compression Restore Additives?
« Reply #3 on: October 09, 2018, 05:15:51 PM »
New rings in a old piston with worn out ring grooves won't hold the rings flat to the cylinder wall and not properly seat.
Making a living with a saw since age 16.

Share via delicious Share via digg Share via facebook Share via linkedin Share via pinterest Share via reddit Share via stumble Share via tumblr Share via twitter

Diesel additives

Started by Kansas on General Board

13 Replies
Last post August 04, 2013, 11:19:34 AM
by ST Ranch
Additives for Diesel engines?

Started by Magicman on Sawmills and Milling

67 Replies
Last post December 22, 2009, 01:44:16 PM
by stonebroke
Fuel additives, top cylinder oil

Started by MartyKaras on Chainsaws

0 Replies
Last post October 28, 2004, 09:30:01 PM
by MartyKaras
Cold weather Diesel Additives.

Started by POSTON WIDEHEAD on General Board

42 Replies
Last post December 27, 2015, 05:54:25 PM
by Polly

Powered by EzPortal