Valve/Piston Clearance - Hot Rod Forum : Hotrodders Bulletin Board
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
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 02-20-2008, 07:07 PM
Member
 
Last photo:
Join Date: Dec 2003
Location: Milford, IL
Age: 28
Posts: 128
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Valve/Piston Clearance

Im building a 327 ci small block chevy and Ive got another quick question.

The pistons have a small D shaped dome and shallow flycuts. Might be the old 11:1 pistons? The heads are '642' castings. 76cc chambered boat anchors.

Isky cam - .505 lift, 292 duration, 244 @ .050.
1.5 ratio rocker arms.

Will I run into valve/piston clearance trouble with this setup?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-20-2008, 07:12 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 13,083
Wiki Edits: 326

Thanks: 779
Thanked 1,057 Times in 879 Posts
Nobody can say definitively. Depends on whether the block has been cut, the heads have been cut, how far the valves are sunk in the heads, piston deck height, gasket thickness, rocker arm ratio (actual) and etc., etc.

Scroll down to "How to check for clearance between valves and pistons"
http://www.iskycams.com/camshaft.php
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-20-2008, 07:27 PM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,153
Wiki Edits: 0

Thanks: 5
Thanked 380 Times in 374 Posts
Generally, no. Specifly, its time to check for your self before you fire it up.

Especially if the heads have been shaved and/or the block has been decked a lot.

It's easy to check for yourself. All you need is a dial indicator and two solid lifters.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

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:
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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Piston To Valve Clearance Problem - Help leejoy Engine 106 02-24-2008 06:12 PM
Piston To Valve Clearance Question # 258,325 leejoy Engine 5 01-07-2008 11:42 PM
700 clearance question Jmark Transmission - Rearend 3 05-24-2006 09:17 AM
Clearance Problem Ratoflic Engine 2 12-07-2004 01:26 PM
TH 350 Intermediate clutch clearance 1969Chevelle Transmission - Rearend 1 08-26-2003 04:34 PM


All times are GMT -6. The time now is 09:36 AM.


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.