D16z6 Oil Pump in a D16a6 Block

[89' Project Civic]

I'm doing a STOCK rebuild on my D16a6 block and I heard you can use the z6 oil pump because it has better flow. I was wondering what the advantages of this would be on a STOCK motor. The only thing that is not STOCK is the Crower "stage 1" cam I bought for the D16y8 head. Any suggestions will be greatly taken. Thanks!.

 

[K2e2vin]

There is no advantage as the block itself will dictate how much oil it can flow. Anything "extra" will just get kicked out the pressure relief valve; thus wasted energy on pumping oil that won't even be used.

If anything, just port out your stock pump.

 

[89' Project Civic]

Ok, thanks!. I will stick to my stock oil pump, but I don't see that I need it now because it's only a stock set-up. Am I correct or should I modify it somehow?. Thank god it's the a6 block and not the y8 block because y8's spin bearings a lot. I am using the y8 head though.

 

[K2e2vin]

You don't need to modify it but you can just to make the most out of it.

 

[89' Project Civic]

I was thinking about buying a new one on eBay for $100 odd dollars to my door, but I will see if my machinist laughs at that idea.

 

[K2e2vin]

The ebay ones are similar to stock. The modification is simply porting the oil ports for a smooth flow and shimming the oil pressure relief valve(to increase max pressure).

Here's Endyn's ported pump:

There's a How-to on Onecamonly.com(by Rushi) also: http://www.onecamonly.com/general-tech/1872-modifying-oilpump-high-performance-use.html

These types of work are not found in any aftermarket D-series oil pump.

 

[89' Project Civic]

I didn't want the eBay one to make more pressure, but just so that I know my block is built right. Thanks for the porting site, I will make damn sure I check it out.

Rep'd

 

[d-mon]

the A6 and Z6 use the same oil pump

 

[K2e2vin]

I believe they're all changed to use the same pump now; but the different flow ratings lead me to believe the original pumps are slightly different(the 88-91's were originally PM3 pumps, but now they're all reverted to P06 pumps).