I need PI Head Thickness measurement. - Ford Mustang Forum
 
LinkBack Thread Tools
post #1 of 15 (permalink) Old 05-19-2010 Thread Starter
Rookie
 
AllThrtl's Avatar
 
Joined: Sep 2009
Location: Lubbock
Posts: 14
 
I need PI Head Thickness measurement.

If any one has a set of PI heads laying around, could you get me a gasket surface to surface measurement? Preferably Windsor heads, just to be certain. I have a set that I think have been milled WAY to much, but I need a measurement just to be certain.... Any help is appreciated...

Thanks

AllThrtl is offline  
Sponsored Links
Advertisement
 
post #2 of 15 (permalink) Old 05-19-2010
SHELBY GT 350 Member
4.6L Member
 
Bullitt5339's Avatar
 
Joined: Mar 2009
Location: St Pauls
Posts: 7,401
 
Your best bet for that info is over on modularfords. Nick McKinney hangs out over there, and he's the closest thing I know to an expert on 4.6 heads. Or you can give him a call at 321-252-RACE, and I'm sure he either knows it, or he can measure on real quick for you.

Milling 4.6 heads is like playing with fire though, it doesn't take much for you to get burnt.


2001 Dark Highland Green Bullitt
[email protected] naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
Bullitt5339 is offline  
post #3 of 15 (permalink) Old 05-19-2010 Thread Starter
Rookie
 
AllThrtl's Avatar
 
Joined: Sep 2009
Location: Lubbock
Posts: 14
 
Yeah, I posted over there, just haven't got any response yet. I will try to get a hold of Nick. Thanks for the info...
AllThrtl is offline  
 
post #4 of 15 (permalink) Old 05-20-2010
Apprentice
4.6L Member
 
jk7208's Avatar
 
Joined: Sep 2009
Location: Gordon
Posts: 207
 
Quote:
Originally Posted by AllThrtl View Post
If any one has a set of PI heads laying around, could you get me a gasket surface to surface measurement? Preferably Windsor heads, just to be certain. I have a set that I think have been milled WAY to much, but I need a measurement just to be certain.... Any help is appreciated...

Thanks
if you would of asked two weeks ago i could have helped you out, i just finished my pi swap with windsor heads. you can get different gasket thicknesses

1996 GT 5-SPEED
PI SWAP Trick Flow 75mm TB/PL
BBK CAI, UDP, Mac Longtubes and offroad Prochamber SCT tuner
Seeda Triax Short Throw Shifter FR Aluminum Ds
3.73 Ford Racing gears
278rwhp/295rwtq 13.06 @ 104.02
jk7208 is offline  
post #5 of 15 (permalink) Old 05-20-2010 Thread Starter
Rookie
 
AllThrtl's Avatar
 
Joined: Sep 2009
Location: Lubbock
Posts: 14
 
The machine shop claims .020" was taken off. My heads were flush with the timing cover to begin with. These pics are what I have now, about .060" difference... That's why I need these measurements so badly....




AllThrtl is offline  
post #6 of 15 (permalink) Old 05-20-2010
SHELBY GT 350 Member
4.6L Member
 
Bullitt5339's Avatar
 
Joined: Mar 2009
Location: St Pauls
Posts: 7,401
 
I just remembered that a friend of mine had a set of ported Windsor PI heads in his shop that came off a customer's car. If you don't get the measurements you need, I'll try to swing by there on my way home and see if I can find a water jacket that's large enough for me to measure the thickness.

2001 Dark Highland Green Bullitt
[email protected] naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
Bullitt5339 is offline  
post #7 of 15 (permalink) Old 05-20-2010
SHELBY GT 350 Member
4.6L Member
 
Bullitt5339's Avatar
 
Joined: Mar 2009
Location: St Pauls
Posts: 7,401
 
I'm actually on the phone with him now, and he's going to measure them for me.

2001 Dark Highland Green Bullitt
[email protected] naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
Bullitt5339 is offline  
post #8 of 15 (permalink) Old 05-20-2010 Thread Starter
Rookie
 
AllThrtl's Avatar
 
Joined: Sep 2009
Location: Lubbock
Posts: 14
 
That would be awesome. I've had one guy measure a set for me, I'm just trying to get 2 or 3 for ammunition. I told the machine shop about the one measurement I have (5.354 as compared to my 5.285) and they insist the measurment is wrong.

We are measuring from valve cover gasket surface to head gasket surface... Thanks

Last edited by AllThrtl; 05-20-2010 at 01:15 PM. Reason: wrong measurement
AllThrtl is offline  
post #9 of 15 (permalink) Old 05-20-2010
SHELBY GT 350 Member
4.6L Member
 
Bullitt5339's Avatar
 
Joined: Mar 2009
Location: St Pauls
Posts: 7,401
 
Valve cover surface to Head gasket surface measured on the driver's side head, forward left on the intake side was 5.303

There's also a reference block on the side of the head that is easily measurable that would have been cut when they milled the head, and would be a little more accurate, and that block measured .700 exactly.

2001 Dark Highland Green Bullitt
[email protected] naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.

Last edited by Bullitt5339; 05-20-2010 at 01:15 PM. Reason: fixed a typo
Bullitt5339 is offline  
post #10 of 15 (permalink) Old 05-20-2010 Thread Starter
Rookie
 
AllThrtl's Avatar
 
Joined: Sep 2009
Location: Lubbock
Posts: 14
 
Thanks, that helps a bunch...

Do you know if those were Windsor or Romeo heads? No idea if it matters or not, just curious.
AllThrtl is offline  
SHELBY GT 350 Member
4.6L Member
 
Bullitt5339's Avatar
 
Joined: Mar 2009
Location: St Pauls
Posts: 7,401
 
These were Windsor heads. He has a set of Romeos, but they've been resurfaced.

2001 Dark Highland Green Bullitt
[email protected] naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
Bullitt5339 is offline  
SHELBY GT 350 Member
4.6L Member
 
Bullitt5339's Avatar
 
Joined: Mar 2009
Location: St Pauls
Posts: 7,401
 
I got a little more info (possibly) from a friend that builds 4.6's a lot. He said by the measurements your heads were done .020. I told him about the timing cover issue, and he said he has had that problem in the past because you have to tighten down the timing cover bolts that go through the oilpan first to suck the cover down, and then tighten the bolts that go through to the block, and that typically will pull it down where it needs to be.

He said that threw him the 1st time as well, but doing it in that order helped him. Maybe it would help your situation as well? Don't know, but it may be worth a try.

2001 Dark Highland Green Bullitt
[email protected] naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
Bullitt5339 is offline  
post #13 of 15 (permalink) Old 05-20-2010 Thread Starter
Rookie
 
AllThrtl's Avatar
 
Joined: Sep 2009
Location: Lubbock
Posts: 14
 
I'm starting to think this measurement isn't gonna tell me anything. I'm thinking that different castings are going to be different. That's probably another reason why Ford doesn't publish this info, just a guess.

With the heads bolted up, you can just barely get the bolts that go into the head to start. The bottom of the cover is flush with the bottom of the block. Because of the dowel pins in the block, you can't get more than a few thousandths out of it, much less the .060" that I need at the valve cover surface. Not to mention, if you move it around too much, you'll have sealing problems at the harmonic balancer...

Thanks for the good info, it's a huge help!!!

It's enough to drive you to drink, as if I needed a reason!!!
AllThrtl is offline  
SHELBY GT 350 Member
4.6L Member
 
Bullitt5339's Avatar
 
Joined: Mar 2009
Location: St Pauls
Posts: 7,401
 
I was worried about the timing problems if they had been milled that far. That would be like 4-5 degrees off on the timing, more than enough to cause PTV contact with any Stage 2 cam. I measured timing without head gaskets in, and it was about 3 degrees different, I can imagine with heads that were milled that much.

2001 Dark Highland Green Bullitt
[email protected] naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
Bullitt5339 is offline  
post #15 of 15 (permalink) Old 05-20-2010 Thread Starter
Rookie
 
AllThrtl's Avatar
 
Joined: Sep 2009
Location: Lubbock
Posts: 14
 
Yep, the RH side was 5* off, but the LH side was dead on. With Hitech Stage 2's I got PTV issues. If I had my extra .050" back on my heads, I might be ok...but I guess we'll never know for sure, lol...

AllThrtl is offline  
Sponsored Links
Advertisement
 
Closed Thread

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user 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, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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 Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome
 


Search Engine Friendly URLs by vBSEO 3.6.1