Moparchat - Home of MOPAR enthusiasts worldwide!



Go Back   Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums > Performance Talk

Click here to search for Mopar cars and parts for sale.


Reply
 
Thread Tools Display Modes
  #1  
Old 03-18-2005, 01:56 PM
coronet67 coronet67 is offline
Inactive User
 
Join Date: May 2004
Location: Germany/Hamburg
Age: 41
Posts: 71
Default How much piston to wall clearance by Sealed Power Pistons?

Hello from Hamburg (Germany),

I´m building my first 383 street/strip engine and I delivered the Block yesterday to the the engine shop to bore and hone the cylinders. The mechanic asked me if he can use the original piston to wall(cylinder) clearance which stands in the shop manual. And thats my question. I bought last year unused 383 dome pistons from "Sealed Power". They are made of forged aluminum and .030" over.
On the package stand nothing about the piston to wall clearance.
With the pistons came original mopar piston rings (no. MO 460).
Does anybody know how much clearance they need ?

Thanks in forward and I hope you all have better weather then here in germany (24 hours rain).

greetings Ja
Reply With Quote
  #2  
Old 03-18-2005, 05:04 PM
John Kunkel John Kunkel is offline
Registered User
 
Join Date: Nov 2001
Location: NorCal
Age: 80
Posts: 10,059
Default

The desired clearance is built into the piston. Mic the piston and subtract the reading from the nominal 383 bore dimension (4.250" + .030"= 4.280");
for example, if the piston mics 4.277" the recommended clearance is .003" for normal operation.

You wouldn't want to run it any tighter but the clearance can be increased for extreme conditions like nitrous or a blower.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
383 with sealed power CS-661 cam Maddart Performance Talk 2 07-09-2010 09:43 AM
anyone have specs on old sealed power pistons? bbeckwith Drag Racing Forum 2 09-11-2007 08:51 PM
Too much Piston/Wall clearance ? coronet67 Performance Talk 4 02-16-2006 06:06 PM
piston 2 wall clrnc wedge542 Drag Racing Forum 2 12-16-2003 12:16 AM
Piston to cylinder wall clearance guy Circle Track Chat 10 08-21-2002 06:06 PM




All times are GMT -4. The time now is 02:47 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
. . . . .