Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine> Ring gap for hypereutectic pistons.
User Name
Password
lost password?   |   register now

Thread: Ring gap for hypereutectic pistons. Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
11-17-2010 06:01 PM
F-BIRD'88 Ring end gap is relevant to the heat load the rings will see.
If you are going to tow or supercharge or otherwise run it hard you can open up the ring end gap.

KB/UEM has specific ring end gap guidelines. If you follow them you won't go wrong.
11-16-2010 03:59 PM
ericnova72 Silv-o-Lite is just Silv-o-Lite, they are the makers(United Engine and Machine Co.) of these pistons, nobody but them uses that name. They are however, the same company that makes the Keith Black Hyperuetectic pistons, but the Silv-o-Lite hyperuetectic pistons are the budget standard rebuilder and claimer racing line, different then the KB's performance line.

The Silv-o-Lites use a standard ring gap, it is only the KB hypers with their higher ring position on the piston that have a special larger gap requirement due to being closer to the top gets them more heat, thus more heat expansion room is needed.

Use the formula you have always used.
11-16-2010 01:49 PM
bprumos apparently the oil rings dont need anything special, but ive heard the ring gap is supposed to be tighter on hyper pistons cause they dont expand as much and are a tighter fit in the bore when thier cold. i dont know if thats true as ive never personally delt with them first hand. from what i remember it was something like .010 smaller than cast pistons. so maybe more like .003x1.00in bore. i would call the piston manufacturer though and see what they recommend since they know all the details on the expansion rate of their pistons and what tolerances they feel is necessary for proper life and operation of their pistons. id listen to their recommendation unless i had hard evidence to say that their numbers were too loose or too tight. thats my .02 hopefully im of some help
11-16-2010 12:40 PM
miller_time i used to work in a performance engine shop. we set up all n/a engine ring gaps the same as you stated .004x1.00 top and .005x1.00 middle. cast,hyper or forged we ran the same gaps.
11-16-2010 11:41 AM
DT1
Ring gap for hypereutectic pistons.

Hi, everyone. This is my first post but I've been lurking for sometime and have found some very knowledgeable and interesting information here. I have many years of experience rebuilding Ford/Chevy small blocks and I usually shoot for stock. I also know that this is a hot rodders forum but I can't think of a better place to have my question answered.

I would like some advice from anyone that has experiance fitting rings for hypereutectic pistons.

I am rebuilding the engine for my 71 Chevy C-10, 350 SB, Bore .020 over, Mild RV cam, 8.5:1. Other than that, stock street and I'm installing Silv-o-lite hypereutectic pistons with a coated skirt. At first I was supplied with Hastings Moly rings but the gaps are close to .030 and I can clearly see, with my necked eye, that some of them are clearly not parallel. I returned them and ordered a set of Sealed Power .025 file fit, Plasma Moly rings.
After doing some research I'm getting conflicting information on the proper gap for top and second rings and was hoping that someone here can help me.
First off; Are "Silv-o-lite" pistons made by KB or do other manufacturers make them as well? The box that mine came in states Silv-o-lite but doesn't state the name of the manufacturer.
What is the proper formula for setting the top and second ring? I have always gone with .004 X 1.00 bore for top and .005 X 1.00 second for standard rings.
I'm reading things like "Top ring wider" "Second ring wider" and it's a bit confusing.
Also do the oil rings need any kind of special consideration?
Any input from some of you that have experience with this
combination would be greatly appreciated.

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -6. The time now is 08:29 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.