Updated 4 Valve head

Blown 5.0 · 02-27-2006, 05:30 PM

This is what i understand aboutt the Mach and Cobra head, There was a cooling problem with 7 & 8 cyl., Causing the valve to seize in the guide, The motor would start making a knocking or ticking sound rite before this happens. Ford reconized this problem, and in mid 03 started putting the redesigned head with a blue paint mark. My question is where is the paint marking? Top, bottom, back ,front? Thanks

TheJeanyus · 02-27-2006, 05:35 PM

They never put the best heads on any production cars. You can buy them from Ford though.

I'm not sure where the mark is. Sometimes I think I hear "the tick", but most of the time I don't hear anything. Maybe I'm just used to it. Or maybe I'm imagining things sometimes since I always seem to want to find something wrong with everything. Regardless, I'm doing the LDC mod when I put a clutch in and hopefully that'll help.

rtusnake · 02-27-2006, 05:56 PM

From what I have read about it there was three sets released on the production cars so far. And the latest set being the best. Given I haven't drove my car it doesn't have the tick right now. It has the second make of the heads. My car has the blue stripe on the driver side head. Its pretty visible. I also read that the stripes have nothing to do wether or not it has the tick just to highlight the castings on the heads for production.

mustangmuscle · 02-27-2006, 07:07 PM

Might want to do a search over on modfords. Someone there posted the Ford part #'s for the latest updated heads, listing the production dates for them as well, I think. These 'new' heads are reported to have more threads for the spark plugs, something like 8 as opposed to the 4 for the 'older' heads.....fwiw

DSkeet · 03-05-2006, 09:49 AM

I don't have a 4V but I have a tick. Checked all my plugs and they are tight...

02-27-2006, 05:30 PM	#1
Blown 5.0 Senior Member Join Date: Jan 2006 Location: Looking for more ways to add BOOST Posts: 167	Updated 4 Valve head This is what i understand aboutt the Mach and Cobra head, There was a cooling problem with 7 & 8 cyl., Causing the valve to seize in the guide, The motor would start making a knocking or ticking sound rite before this happens. Ford reconized this problem, and in mid 03 started putting the redesigned head with a blue paint mark. My question is where is the paint marking? Top, bottom, back ,front? Thanks __________________ Hauling A** on Pump Gas !!!!!

02-27-2006, 05:35 PM	#2
TheJeanyus Administrator Join Date: Dec 2004 Location: Huntsville, AL Posts: 14,774	Re: Updated 4 Valve head They never put the best heads on any production cars. You can buy them from Ford though. I'm not sure where the mark is. Sometimes I think I hear "the tick", but most of the time I don't hear anything. Maybe I'm just used to it. Or maybe I'm imagining things sometimes since I always seem to want to find something wrong with everything. Regardless, I'm doing the LDC mod when I put a clutch in and hopefully that'll help. __________________ 1998 Mustang GT Coupe - World's Slowest Racecar 2005 Toyota 4Runner SR5 V8 2013 Volkswagen Jetta Sportwagen TDI

02-27-2006, 05:56 PM	#3
rtusnake Halfshaft Killer Join Date: Mar 2005 Location: The Kingdom Posts: 3,910	Re: Updated 4 Valve head From what I have read about it there was three sets released on the production cars so far. And the latest set being the best. Given I haven't drove my car it doesn't have the tick right now. It has the second make of the heads. My car has the blue stripe on the driver side head. Its pretty visible. I also read that the stripes have nothing to do wether or not it has the tick just to highlight the castings on the heads for production. __________________ 03 Cobra 06 F250 (\__/) (='.'=) (")_(")

02-27-2006, 07:07 PM	#4
mustangmuscle Senior Member Join Date: Mar 2005 Location: Auburn Posts: 792	Re: Updated 4 Valve head Might want to do a search over on modfords. Someone there posted the Ford part #'s for the latest updated heads, listing the production dates for them as well, I think. These 'new' heads are reported to have more threads for the spark plugs, something like 8 as opposed to the 4 for the 'older' heads.....fwiw __________________ 04 Red Fire Cobra JLT RAI MGW Shifter Bassani cat-back Bassani catted-X MM FLSFC's BF IRS Brace Lukem80 Special Edition Hi-perf springs BF 2.76 S/C pulley SCT XCAL2 DiabloSport MAFia NGK TR6 Plugs Steg Stage 4 Eaton Afco D/P H/E Metco 2# Lower KB BAP SPEC 3+ clutch w/SPEC steel fw 60# inj's 491rwhp/504rwtq

03-05-2006, 09:49 AM	#5
DSkeet IDK Join Date: Dec 2004 Location: Jacksonville, AL Posts: 1,136	Re: Updated 4 Valve head I don't have a 4V but I have a tick. Checked all my plugs and they are tight... __________________ --2005 Chevrolet Corvette C6 Z51-- --2007 Lexus GS350 AWD-- --1958 Plymouth Belvedere aka "Christine"--