piston stop tool?? - 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 09-18-2008, 01:15 PM
Registered User
Join Date: Mar 2006
Location: Vancouver
Posts: 389
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
piston stop tool??

Hey guys got a question here. On my 383sbc I am unable to accurately time it because the harmonic balancer and timing tab arent a matched pair so the line on the balancer is about 180 degress away from the timing tab when the light flashes. I want to make my own indication on the harmonic balancer with this timing tape I bought and to do so I need to find TDC on a cylinder. I have heard about this tool called a "piston stop tool" that threads into the spark plug hole and can determine when the piston is at the top of its travel. I have straight plug heads so I don't see how this tool could possibly work. It is really the only sure way to find TDC in my cylinder so I can place on my timing tape. Does anybody know if this tool works for straight plug cylinder heads?? Thanks in advance.


Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 09-18-2008, 01:31 PM
Last photo:
Join Date: Jun 2007
Location: murfreesboro tn.
Posts: 731
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
piston stop tool??

my tries with it didn't work , but my pistons where dished type replacements .
i took a spark plug and removed the core , tapped it , and took a all thread bolt and screwed on a jam nut first , then screwed it in plug main body .
get your piston say close to top , screw in bolt till it hits piston and then tighten the jam nut .
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-18-2008, 01:47 PM
techinspector1's Avatar
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Zephyrhills, Florida, USA
Age: 75
Posts: 15,460
Wiki Edits: 326

Thanks: 1,548
Thanked 2,081 Times in 1,610 Posts
I've done the same thing. As I remember I tapped the plug 3/8-16.

Here's the skinny on doin' it from start to finish.....

For those interested in a "store bought" unit, this is probably the best one to use. It has a hole drilled through the middle of it to relieve cylinder pressure and vacuum as you rotate the crank....

Last edited by techinspector1; 09-18-2008 at 01:53 PM.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-18-2008, 11:03 PM
DoubleVision's Avatar
Not Considered a Senior Member
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 43
Posts: 10,733
Wiki Edits: 0

Thanks: 19
Thanked 77 Times in 71 Posts
why not just buy a proform harmonic balancer cover? it bolts in place and matches to the keyway position. Since it can`t spin like the outer ring of a balancer due to being bolted to the center hub, as long as your running a standard timing tab at the 2 o`clock position you`ll be right where you need to be. these cost about 24 bucks. mr. gasket makes a chrome timing time for 6, 7 and 8 inch balancers.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-19-2008, 07:22 AM
C-10's Avatar
Revolution Calling

Last journal entry: Poverty caps live on.
Last photo:
Join Date: Apr 2008
Location: Nashport, Ohio
Posts: 920
Wiki Edits: 0

Thanks: 2
Thanked 6 Times in 6 Posts
A word of caution on the piston stops that thread into the spark plug hole.

Some cylinder heads, especially AFR, have the plug pointing right at the exhaust valve and PARALLEL to the piston face. Bad news. Been there.

I highly wouldn't recommend it.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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
blaster vacuum 71corvette Body - Exterior 6 12-23-2007 07:24 PM
balancer installing tool Edwin Engine 8 10-03-2007 09:37 PM
big block chevy piston to wall clearance question Ratoflic Engine 24 06-22-2006 04:16 PM
push rod clearance tool lanierledford Engine 1 07-04-2005 08:32 PM
Piston Oilers Fastnuf Engine 13 04-08-2005 09:25 AM

All times are GMT -6. The time now is 03:15 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.