18mm or 20mm head gasket?? - Ford Powerstroke Diesel Forum

6.0L Performance Parts Discussion What has or has not worked for you?

 
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post #1 of 6 Old 02-15-2012, 04:04 AM Thread Starter
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18mm or 20mm head gasket??

I got an 06 6.0, I have read that engines built 03-05 have 18mm and engines built 06-07 have 20mm. Where can I find a build date of the engine, or is it just a best guess thing?

With my truck being an 06 i just thought that the engine might of been build in 05 and sat around or something. I just want to make sure I buy the right ones the first time.

06 F250 King Ranch FX4 Crew Cab

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Banks Six Gun w/ Banks Iq
Banks High Ram Intake
Zoodad Mod
4" Turbo back Strait Pipe

Exterior:
2" Ebay level kit
295/65/20 Nitto Trail Grappers
KC light bar, 2 KC long range, 2 KC Driving
Omega tri-trump train horn 150psi


Interior:
Rockford Fosgate 3-way door speakers
Rockford Fosgate 10in P3 Shallow Sub w/ 300W Rockford amp
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post #2 of 6 Old 02-15-2012, 04:39 AM
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Check the build date in your door, if it is Pre-January 06 Build its for sure 18mm. Anywhere after that you would need an oasis ran to find exact build date. Also, if the truck has had heads replaced under warranty it can still be a 20mm and require the use of a step dowel.

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post #3 of 6 Old 02-15-2012, 04:55 AM
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if your truck is pre jan 06 do you have to run 18's or can you run 20's
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post #4 of 6 Old 02-15-2012, 04:59 AM
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Quote:
Originally Posted by 06StrokeWagon View Post
if your truck is pre jan 06 do you have to run 18's or can you run 20's
If your heads are 18mm you will have to use 18mm gaskets, if your heads are 20mm you have to use 20mm gaskets.

Performance Machine & MFG.
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post #5 of 6 Old 02-15-2012, 05:24 AM Thread Starter
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ok thanks guys for the quick response!

06 F250 King Ranch FX4 Crew Cab

Performance:
Banks Six Gun w/ Banks Iq
Banks High Ram Intake
Zoodad Mod
4" Turbo back Strait Pipe

Exterior:
2" Ebay level kit
295/65/20 Nitto Trail Grappers
KC light bar, 2 KC long range, 2 KC Driving
Omega tri-trump train horn 150psi


Interior:
Rockford Fosgate 3-way door speakers
Rockford Fosgate 10in P3 Shallow Sub w/ 300W Rockford amp
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post #6 of 6 Old 02-15-2012, 05:52 AM
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Or if you can still read the sticker on the valve cover the engine build date is noted on it.

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Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
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Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
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No Limit Fab 6.0 Cold Air Intake
http://www.bulletproofdiesel.com/default.asp
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