newbie; I need help with the cylinder heads

[AL]

hello sho people;
my brother has a 93 a/t (the 3.2) and has an oil consumption problem. (spark plug seals?)
anyway, i don't know the exact details, and he doesn't have the net at his place, so here i am.

what i need are head diagrams. my pops needs to see the gaskets and seals around there (spark plug, vavle covers and what ever else there is...). i guess if any one has scans of the shop manual, that would work best
any help is greatly appreciated.

btw, what's mtx? manual tranny x...?
any general sho info (or links to it) would be nice.

thank you in advance, al

 

[drivinhard]

The spark plug seals won't cause an oil consumption problem. The valve covers have a gasket in the typical spot, around the edges, as well as 3 plug well seals per valve cover. The front head has 1 cam seal (intake cam), the rear head uses 2 cams seats (exhaust cam uses a seal as it drives the vane for the cam sensor). Also you have the valve stem seals (probably your oil consumption problem) and of course the head gaskets. Replacing the valve stem seals requires removal of the cams, and each valve assembly...



------------------
White 92
SR71SHO - racer '89

 

[AL]

only 1 cam seal on front head?

anyway, i doubt they are going to take the heads off, probably just the vavle covers.
once again, i don't really know what the problem is, but i'd imagine that a head job would be a major project, and cost big $, plus it would take more than a full day. the way they've talked about it, it doesn't seem that will be doing something that major.

thank you for the break down, sounds like you've had experience with this before. how long did the heads take to get off and put back on?

btw, i'd still gladly accept a head diagram so they can see what there getting into and what seals/ gaskets to order.

 

[drivinhard]

The exhaust cam on the front head is short, it only uses 4 cam bores (opposed to 5 that run the length of the cam and require seals for protruding).

Taking the valve covers off isn't that big a deal, but taking the cams out requires taking the front part of the motor apart to, which gets a bit more involved.

Have you checked compression? Scar'd cylinder walls or rings will cause lots of oil consumption. Does the car smoke from the tailpipes? Under WOT or when you back off?

------------------
White 92
SR71SHO - racer '89

 

[93SHOCOOL]

AL, what kind of miles does your brother's SHO have on it?? There are a few things that wouldnt hurt to replace while you have the intake and valve covers off. Also the heads arent that much more work than removing the intake manifold and valve covers (but thats just opinion) If you cannot find a head diagram I would reccomend going to the local Ford Dealer and asking them for an AllData print-out, they should do it for free.

A word of advice on this forum....If you arent sure about it, ASK! There are some of the smartest guys I have ever spoken to in my life on this forum and the coolest thing is, they arent stingy with their knowledge..(well at least not all of them)just joking guys

 

[1fastsho]

it is possible that the vale seals are bad. When it is started in the morning does it puff blue smoke at all? also if the cats fall apart and the peices get into the rear cylinder bank it can cause high oil consumption, at that point though you'd be looking for another motor or boring that one. Only occasionally can you hone it and fix the problem....actually almost never I can only think of one car that worked on actually

------------------
Shawn Pasley
Innovative Performance Technologies
770-725-4631
www.iptech.tv
92 SHO red/grey
3.2L(bored) Lowered compression(9:1)
stageII cams, Ported/Polished heads,Ported/polished Intake manifold(runners, endtanks, and behind the throttle body), big bore butterflies,80mm maf, LPM,equal length Long Tube Headers and custom Y pipe, Dynomax cat-back, Koni/coil-over suspension, poly-bushings everywhere,26mm FRONT sway bar, 28mm REAR sway bar,rear strut tower brace, solid subframe bushings,subframe connectors, tubular aluminum adjustable rear control arms,shortened shifter,235/45/17 Toyo Proxes T1-S's on TSW VX-1's. 15 lbs of boost here I come!

 

[AL]

drivinhard, so there is no seal? what keeps oil from squirting out where the head ends and the cam gear begins?

it does smoke a bit, i don't know where. i think it always does, cruise, idle, WOT...)

93SHOCOOL, he's got a little over 100k miles.
i think they are taking the intake off, so i guess they may take the heads off too

1fastsho, so your saying that the cat can get sucked in? (btw, how many cats does an SHO have?)

thank you for all your help guys.

 

[fredhurderjr]

Al -
3 of the cams extend beyond the head, one does not, hence 3 cam seals.

Yes, the catalytic brick can disintigrate upon a rich-running condition, and on high-revs / let-off, the engine can suck that sand back in.

There are 2 cats on the y-pipe, one for each bank of cylinders.

Good Luck, and welcome aboard.

 

[AL]

thanks fredhurderjr,
so how does that one cam run?
directly from the intake cam, by a internal gears in the head?)

 

[drivinhard]

The cam belt drives the intake cams, the intake cams drive the exhaust cams via timing chains on the tranny side of the motor. The front head exhaust cam does not extend outside of the head casting. (thus 3 seals)

------------------
White 92
SR71SHO - racer '89

 

[AL]

ok, thanks for the details.
can't understand why one exhaust cam would differ from the other.

i guess i'll send my bro on a trip to the ford dealer if there's no diagrams uploaded on the net.

 

[drivinhard]

The exhaust cam on the back head extends beyond the head gasket (requiring a seal) and has a vane that the cam position sensor reads. It's much longer than the front exhaust cam.

All 4 cams are different lengths to some degree...

------------------
White 92
SR71SHO - racer '89

 

[drivinhard]

"The exhaust cam on the back head extends beyond the head gasket (requiring a seal)"

sorry, meant to say "extends beyond the head casting"



------------------
White 92
SR71SHO - racer '89

 

[93SHOCOOL]

AL, I would highly advise that you do the 60k on the car while you are taking the heads and valve covers off. Dont quote me on the following list of the 60k , I think I am missing a few things(so anyone feel free to correct me)
1.Timing Belt
2.Accessory belt(s)
3.Water Pump
4.Water Pump gasket or O-rings set
5.Crakshaft position sensor
6.Front main oil seal
7.Lower radiator hose
8.Shim valves
9.Clean intake, from what I have heard it can take anywhere from 2-5 cans of intake cleaner
If you want prices I can get them or I am sure anyone else on this forum can too.
www.fordpartsnetwork.com
good place to look

------------------
93ATX
SHOCOOL
-Emerald green,20% Window Tint,Green Interior neons(hooked up to autolamps),Yellow painted dash/accents,Front and rear lens covers,Coneless,K&N,Rebuilt trans,Koni Struts(adjustable),Eibach Springs,BF Goodrich Comp T/As for slicers,NO MORE KMC's FOR ME,A few minor motor mods, Yeah Right
-Best et. 15.18
-Avg. 15.6
-Possible Rebuild this spring??? (if I ever get around to it)
Wish List
-SS Y-pipe
-Underdrive Pulleys
-Port and Polished Intake(powdercoated)
-Big Bore Butterflies
-3 Gauge A-pillar pod, with trans. temp, oil pressure and voltage

93 Ford Mustang LX 5.0
-300+hp dyno slips comin soon!!
-Featured in Mustangs and Fast Fords Magazine
-Anyone know where I can find a good race???
-I guess you could say a "Vette Killer??"

Its not how hard you drive the car, its how hard the car drives you

You have go to be kidding me this kid has a Taurus and he wants to race me?? (Little did Johnny know he was about to race a SHO!!)
AOLIM name: Xlevitronx or ClarkthaCop
mailto:[email protected][email protected]</A>

 

[AL]

thanks 93SHOCOOL, i'll show the list to my bro.

what's with the cam and crank having sensors?
do SHO have knock sensor and automatically adjust timing if lower octane is used?

 

[fredhurderjr]

Yes, there is a knock sensor, located on top of the block between the 2 heads, underneath the intake runners & fuel rails.

 

[AL]

thanks drivinhard

93SHOCOOL, are low-mid 15's usually what a stock atx will run with a good luanch?
what's the x in atx mtx mean?

 

[fredhurderjr]

axle

Automatic TransaXle
Manual TransaXle

 

[AL]

thanks fred, that makes sense, wouldv'e never thought off that though

pops did what 93SHOCOOL said; he went to the dealer and they printed it out for him for free. (he did that on his own, i just got home and didn't get to call him).

 

[fredhurderjr]

Al - Greg Raciti, the Administrator of the Forum, has expanded on & added photos to my glossary section that was designed to explain a bunch of acronyms, etc. - It's listed off the home page of the forum.

My original one is still listed at http://members.cox.net/fhurderjr/glossary.htm

It's the same list, set up as one static HTML page.