well my build thread is on hold at the moment till a little $$$$ comes my way and I can get my mounts and my axles from hasport. anyways I have my motor ready to be completely assembled , right now it just has pistons and rods and all that good stuff. since I havent bolted my head on and done the timing belt and what not , I was researching , and what I would like is to avoid the same problems people I know have , which for the most part is bearings.... all mine were within spec I plastiguaged 2 times. now I have never built a motor this is my first one and I would like it to last as long as humanly possible obviously , and what I have found is the z6 guys dont have oil pressure problems as much as y7/y8 guys , but I couldn't find any info on the a6 oil pump. could someone please let me know if it is worth porting it? I plan to run 300-350whp and I WILL be using a ball bearing turbo. also what exactly does the shim have to do with all this? I hear people saying I am going to "port and shim" I got the porting part. what does the shim have to do with it? I would love to learn , someone elaborate for me thanks in advance HT.

 

bump...

 

you shim it to increase the pressure. you might have more luck in the forced induction forum

 

so noone knows if its worth porting? I just need to know if the a6 pump is like the z6 because I know it's the Y's that have problems. I also need to know how much to port. I am not going to be doing the shim because it's not necessary.

 

D16A6 and D16Z6 oil pumps have the same Honda part number

http://www.theoldone.com/articles/d%...ilding%5Ftips/

 

that helps man thanks.

 

Don't port it or shim it. It is a waste of time (on Honda motors for most applications). If you are running a ball bearing turbo you will have to restrict the oil feed anyways so you don't blow the turbo seals. So your turbo will not "steal" any oil from the bearings if that is what you are thinking. Also typically when turbo charging pressure from the oil is not the problem it is the volume; if you are lacking volume then the oil will most likely burn from starvation. Keep this in mind - As pressure increases flow decreases and as pressure decreases flow increases. This is a generic rule of thumb of course. Don't get me wrong there are points where a higher pressure will yield more flow but I am not going to get into all of that here.

Keep it all stock and don't worry about shimming it or porting it, just run a little thicker oil if your bearing clearances will agree with it. Honda motors in general are very well setup as far as the oiling system is concerned. Just as a basic rule of thumb have about 10psi in oil per every 1,000 RPMs. So if you were running lets say a 9,000 RPM motor you would want about 90psi to be on the safe side of the spectrum.