Merry Christmas and welcome to Packard Motor Car Information! If you're new here, please register for a free account.  
Login
Username:

Password:

Remember me



Lost Password?

Register now!
FAQ's
Main Menu
Recent Forum Topics
Who is Online
112 user(s) are online (112 user(s) are browsing Forums)

Members: 0
Guests: 112

more...
Helping out...
PackardInfo is a free resource for Packard Owners that is completely supported by user donations. If you can help out, that would be great!

Donate via PayPal
Video Content
Visit PackardInfo.com YouTube Playlist

Donate via PayPal




motor ring gap
#1
Home away from home
Home away from home

Barry Lowe
See User information
Can someone please let me know what the ring gap should be in a 34 standard 8

Posted on: 7/11 9:08
1925 333 Phaeton
1926 Phantom 1 Rolls Royce
1926 Hudon super six Coupe
1927 Peerless Roadster
1927 433 7 passenger limo
1928 Peerless coupe
1929 Peerless Boatail coupe
1929 Phantom I Rolls Royce
1930 Springfield Phantom 1 Regent
1931 L-29 Cord
1931 833 Convertible
1931 833 Opera Coupe
1934 Phantom 11 Rolls Royce
1934 1101 Roadster
1934 1101 Coupe
1934 V12 Opera coupe
1936 120
 Top  Print   
 


Re: motor ring gap
#2
Home away from home
Home away from home

53 Cavalier
See User information
Someone correct me if I'm wrong, but ring gap should be determined using the ring manufacturer's specifications, correct?

For example, Hastings says....
"The minimum end gap is calculated using a general rule of .004 of an inch per inch of bore. (0.1 mm per 25mm of bore)This general rule is fine for bores from 2.5 inches to 4.5 inches."

Too wide a gap is no good, and too narrow is even worse!

Posted on: 7/11 10:27
 Top  Print   
 


Re: motor ring gap
#3
Home away from home
Home away from home

32model901
See User information
I usually use the ring manufacturers specifications. If these are not available, Mahle, Hastings, and Summit offer some good info.

In addition to gap, placement of the gap is important also.

us.mahle.com/media/usa/motorsports/2022-ring-minimums-&-instructions-2.pdf

hastingspistonrings.com/wp-content/uploa ... /HASTINGS-PERFORMANCE-CATALOG-1.pdf

static.summitracing.com/global/images/instructions/sum-133-m139-00.pdf

Posted on: 7/13 8:30
 Top  Print   
 









- The following Google Ad-Sense Advert helps fund the cost of providing this free resource -
- Logged in users will not see these. Please Join and Donate to help support the website -
Search
Recent Photos
Photo of the Day
Recent Registry
Upcoming Events
Website Comments or Questions?? Click Here Copyright 2006-2024, PackardInfo.com All Rights Reserved