4bangerjp.com
General Forums => The Mess Hall => Topic started by: FourbangerYJ on November 20, 2009, 11:02:15 PM
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A friend of mine has a 90 W/ 2.5L and is looking for a metal valve cover. I snooped around a bit and did not see any metal ones, lots of plastic thou.
Does it exist?
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I don't think so.
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My 94 has a cast Aluminum stock valve cover. So maybe check wrecking yards?
Dave
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My 94 has a cast Aluminum stock valve cover. So maybe check wrecking yards?
Dave
>1990 have aluminum valve covers but for some reason I don't think they'll work on a TBI system.
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>1990 have aluminum valve covers but for some reason I don't think they'll work on a TBI system.
when i got my 1990yj it had a cracked valve cover and couldn't find a metal one so i settled for a plastic one.. but for some reason the dealer couldn't' get my the correct gr-omits for the pcv system (after like 4 tires i gave up and used silicon to fill the gap in the wrong grommet.) they would either get a grommet that fit the valve cover or one that fit what goes into the valve cover... if i had to do it again id get a metal one for the 1991+ and change the pcv system over (shouldn't realy be that different or effect the fuel injection as long as you have air in and out.
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when i got my 1990yj it had a cracked valve cover and couldn't find a metal one so i settled for a plastic one.. but for some reason the dealer couldn't' get my the correct gr-omits for the pcv system (after like 4 tires i gave up and used silicon to fill the gap in the wrong grommet.) they would either get a grommet that fit the valve cover or one that fit what goes into the valve cover... if i had to do it again id get a metal one for the 1991+ and change the pcv system over (shouldn't realy be that different or effect the fuel injection as long as you have air in and out.
The +91's do not use a PCV system.
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(http://img1.classistatic.com/cps/kj/091115/178r3/80516nm_20.jpeg)
I have this one up for grab's it's not plastic.
Is that what your looking for?
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What would it take to make the 91 and newer work on the 90 and older?
Anyone have a PIC of the 90 style?
TORCH: that is what he is looking for. Seems there is the question if it will work with the TBI VS. MPFI.
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This is the best picture i have and doesn't realy show the contoures of it.. jut what sticks out of it...
(http://i164.photobucket.com/albums/u25/chardrc/jeep/IMG_2962.jpg)...
looking at pictures and part numbers on autozone.com comparing 1990 to 1991, I found that they have different part numbers (but the 1990 was a rubber gasket and the 1991 was cork rubber :confused:) the pictures do look like the shape is slightly different (more ins and outs with the metal one) if that can be trusted. :confused:
edit: found picture on quadratec web site
(http://www.quadratec.com/Assets/Images/114855/114855-md.jpg)
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I had issues with leaks and called felpro's tech line.
Wonder of wonders I ended up talking to a guy who knew his stuff, and was a YJ owner.
There are 4 different 2.5 liter valve cover gaskets. 2 plastic and 2 metal cover variants.
You have to look at teh cover, teh key difference is whether the cover has pinch points near the bolts.
The 91+ valve cover has the extra fitting for the metered breather fitting. The early one has a PCV can.
With some minor adjustments they should interchange.
Dave
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well I'm selling the one I posted if your interested let me know
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well I'm selling the one I posted if your interested let me know
By the looks of it, it won't work.
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What are you seeing that looks different? Just curious... Cause all 2.5 use the same head.
Dave
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What are you seeing that looks different? Just curious... Cause all 2.5 use the same head.
Dave
One has 3 holes the other only 2. I would imagine it would bolt to the head. What do you do about adding a hole? Just drill it, it looks pretty large.
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You mean the holes for the hoses and such? or the mounting holes?
On a MPI you have a breather connection and a fitting for crankcase metered breathing. (CCV is a small brass fitting like 1/4 inch on side of cover.)
On the TBI you should have a breather and PCV valve. (PCV and Breather are like 3/4 in holes on top of cover.)
You might be able to find a Breather cap to replace the oil filler cap and use the original breather for the PCV valve?
I might be missing one,,, What do you see on yours?
Dave
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One has 3 holes the other only 2. I would imagine it would bolt to the head. What do you do about adding a hole? Just drill it, it looks pretty large.
the metal one has 3 holes.. one of them is open the side.. but they are different sizes...