block prep - Page 2 - MustangForums.com

Notices
Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

block prep

Reply

 
 
 
Old 09-04-2008, 11:31 PM
  #11  
rmodel65
Yukon Cornelius
 
rmodel65's Avatar
 
Join Date: Oct 2005
Location: deep in the heart of dixie GEORGIA
Posts: 11,788
Default

+1 on the o ringed block
rmodel65 is offline  
Reply With Quote
Old 09-05-2008, 12:22 AM
  #12  
68EFIvert
3rd Gear Member
 
Join Date: Jan 2007
Location: Washington
Posts: 682
Default

I second the decking the block. I ran into a problem with my boosted application when the deck was good enough for N/A but when I put on MLS headgaskets I had coolant seepage. On a side note, if you do go have it decked I have a set of almost new MLS gaskets you can have Tony. They are hanging on my wall and I likely won't ever use them again. That was a blown $150. If you come get them I will take you for a ride in my car.

I am running flat top pistons with a cr about 9.2:1. Not the best for boosted applications but it seems to be working fine for me. If I end up blowing up the engine I will step up to a more expensive rotating assembly with a cr of about 8.5 like the guys suggested earlier. I could then crank up the boost.
68EFIvert is offline  
Reply With Quote
Old 09-05-2008, 03:19 AM
  #13  
cprstreetmachines
4th Gear Member
 
Join Date: Aug 2007
Location: Socal
Posts: 1,235
Default

9 or 9.4 to 1 isn't a bad CR at all. I'm running 9.2 right now with 15psi. the higher CR will drive nicer and spool faster.

I would deck the block to straighten it out, but don't o-ring anything. That's how you really hurt things. If something goes wrong, you want to use your HG's as fuses. If your fuse doesn't pop, your motor pops pistons instead.
cprstreetmachines is offline  
Reply With Quote
Old 09-05-2008, 01:24 PM
  #14  
Tony R
4th Gear Member
Thread Starter
 
Tony R's Avatar
 
Join Date: Mar 2007
Location: Vancouver Wa
Posts: 1,099
Default

how much does it usually run to deck a block? What are you talking about with the O rings. I have never heard of it before. So If I only have the cylinders honed I could probably still reuse my flat top pistons? Would that mean that I would have to get heads to compensate for a lower CR.
Tony R is offline  
Reply With Quote
Old 09-05-2008, 03:27 PM
  #15  
cprstreetmachines
4th Gear Member
 
Join Date: Aug 2007
Location: Socal
Posts: 1,235
Default

IF you can only hone and re-use the flat tops, a 58-64CC will be just fine. I'm running 58cc with a flat top in my 302.And I I think it's still only 9.2-1. But honestly it's a long shot to just hone a block and re-use the piston if it was a carbed motor. Better luck if you tried that with an EFI motor.
The o-ringing is a little groove you put in the head or block. The HG usually has an embedded steel ring that fits into the groove when you put on the heads. It works great. Too good for guys that have to pay for their own motors though. Tune it wrong, or have a fuel pump go out, clog or any problems under boost and the piston's really don't like it.
cprstreetmachines is offline  
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
GimpyHSHS
4.6L (1996-2004 Modular) Mustang
11
03-12-2018 05:16 PM
mustangheaven
Motor Swap Section
3
01-03-2016 12:20 PM
Matt's 95 Stang
5.0L (1979-1995) Mustang
2
10-05-2015 08:16 AM
mustangheaven
General Tech
2
09-29-2015 12:00 PM
GLOCKer
General Tech
0
09-28-2015 08:36 AM


Thread Tools
Search this Thread
Quick Reply: block prep


Advertising
Featured Sponsors
Vendor Directory

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.