2-piece timing cover -- will it fit?
Thread Starter
Instructor
Joined: Jul 2004
Posts: 137
Likes: 0
From: CT
2-piece timing cover -- will it fit?
I'm planning on changing my timing chain & sprockets and am thinking about a 2-piece timing cover in case I change the cam in the future. Will a 2-piece cover clear the stock water pump? If so, any particular brand (I'm assuming it'd have to be steel)? I heard the L98 water pumps are short leg with limited clearance between the back of pump and engine block.
Le Mans Master
Joined: Mar 2002
Posts: 5,889
Likes: 2
From: Castro Valley Calif.
St. Jude Donor '03 thru '26
I just went thru this. I used a Cloyes 2 piece cover which is substantially more thick. My Milodon water pump didn't clear, but the old stock one did. I ended up using an Edelbrock hi flow rather than a stocko and it fit just fine because of the design of the cover plate on the back of the pump.
Reader's digest version: If you look at the cover plate on the back of your intended pump and it's flat, you're probably OK. If it has a molded shoulder around the perimiter by the bolts you may have problems. If you use a stamped steel timing cover, you're probably OK with either pump as well.
Are we confused now?
Reader's digest version: If you look at the cover plate on the back of your intended pump and it's flat, you're probably OK. If it has a molded shoulder around the perimiter by the bolts you may have problems. If you use a stamped steel timing cover, you're probably OK with either pump as well.
Are we confused now?
Melting Slicks
Joined: Oct 2001
Posts: 2,320
Likes: 2
From: Salem Oregon
I had one i put on the motor, then went to put the stock 85 pump on and it was a good 1/4 inch from the block. So I pulled it off, and went with a one piece. I sure am glad it was out of the car and on a stand.
Thread Starter
Instructor
Joined: Jul 2004
Posts: 137
Likes: 0
From: CT
Thanks! My pump has the shoulder and bolts around the perimiter (it's only ~20K miles old so I don't want to swap it out). Think I'll try a 2-piece stamped steel cover then and revert to the original one if that fails.
Safety Car
Joined: Apr 2001
Posts: 3,525
Likes: 2
From: Houston TX
Originally Posted by 1986Z51
Thanks! My pump has the shoulder and bolts around the perimiter (it's only ~20K miles old so I don't want to swap it out). Think I'll try a 2-piece stamped steel cover then and revert to the original one if that fails.
As a benefit, the aluminum aftermarket timing covers make excellent cam walk bearing/bushing (forward loading of the cam) foundations. The factory covers and even the S/D stamped steel aftermarket cover flexed considerably when the cam bearing pushed forward.
I will make comment from my experience that everyone who uses these 2 piece or 3 piece covers winds up with oil leaks.
Aaron
Last edited by AKS Racing; Dec 30, 2004 at 11:01 PM.
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
That pic in my sig is before I changed to the monoblade. Airzona Speed and Marine monoblade. But It looks like you could take off their top plate and replace it with your stock one...Its a quility peice but has no ports for the PVC valve...which is ok for modded setups, but I did not no it when I ordered it. Still I like it even though it made no difference in HP on my car but I am pretty sure my small cam is the limiting factor.
Last edited by chriswtx; Dec 31, 2004 at 12:20 AM.
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