| Pump mounting - you realise the pump is mounted direct to the sump right? The pulley and pump directly fit where the air con goes. I really doubt a bracket will work there is just no space. If the compressor is shifted up and towards the frame rail it may fit. It's a shame the oil pump is mounted where it is. I spoke to Bill Dailey about it, and he mentioned that he wanted to mount it on the other side of the block to begin with, but was told to do otherwise. He told me it could be redesigned to mount the pump on the other side, and offset it to the rear where there is plenty of room, but that would be at least a year away because he is so backed up with work. Yes sorry that was my fault, having a right hand drive meant the steering rack was the main thing to work around. To actually do a LHD car is actually easier as Bill would not have to funnel the oil back to the other side of the sump. I believe he was going to have a design of this nature, but his work is so popular that he is always backed up. It took a year to get this done, but worth the wait. Now if you wanted to replace the power steering pump you might be able to stick the aircond there or the dry sump pump there. Maybe an aftermarket air conditioning unit or a cool suit would be easier. Most of the people that want AC still street drive their car, so that pretty much rules out a cool suit. The oil pump and compressor are too big to fit where the power steering pump is. The cool suit comment was really a bit of fun - also assumed that it was a race car see comments below. Putting a dry sump system in a street car is really not a realistic proposition, where do you stick the oil tank, where do you run the oil hoses. You need at least a 2 gallon oil tank - that won't fit in the engine bay. There will probably be a requirment to prime the pump which makes a street vehicle not that realistic. Oil tank goes where the battery resides, battery is relocated to the hatch area as is commonly done. I've even seen the tank mounted in the hatch area. Electric power steering can be used to free up a pulley for the oil pump. Yes, Ive seen Toyota MR2 steering pumps in race cars. Yes I too thought you might want to consider a electric power steering pump to free up space or maybe a electric water pump to free up a pulley.Oil tank in the battery box location seems to me to not be feasible. Size of tank is important, bigger the better. I doubt you would fit it there, I could fit a small oil breather tank there, but I doubt a dry sump tank. I have seen a really skinny tank mounted in the front of the engine but good luck with that in the Z. Tank will need to be in passenger area or hatch. Here is what Bill said "the dry sump tank is always an issue with small cars. I would think a peterson 2 gallon tank (6" diameter, 19" tall) would be good if you can fit it. I have seen some put the tank on the passenger side in front of the firewall. cut a hole into the footwell to get some height and then seal off the footwell from the cockpit. bigger is better in terms tank size but has a weight and size penalty."
There is no requirement to prime the pump in a properly designed system. The oil tank should be mounted higher than the pump, so it should gravity feed. Gravity feed? But a dry sump system is pump fed not gravity fed. In fact the gravity feed is the problem (refer to comments by RSR on his system) what happens in when the engine is not running the oil gravity feeds to the sump, filling it up. This means you need to prime the pump before starting to suck the oil back to the tank. I noted RSR did a fancy cut off valve system to stop this happening, which I am considering. Judging by what I've seen so far in your pics, it can be done with a custom bracket and revised tensioner for the AC compressor and different AC lines. Sure, it will be a pain in the ass, but what isn't on this car?
Anything is possible with enough money thrown at it and I would love to see it done and would be great if lots of people bought the dry sump system to help Bill out with all his effort for the Z32 community. However the main issue is need. If you have a street car with airconditioning, I am assuming that you are not racing it competitively and have interior etc. YOu therefore have a car that is not superlight and not raced on slicks and not really pushed (as it can't be). You should therefore not have oil problems. If you are running enough power to get close to problem area then you will have external oil cooler and oil filter giving a lot more capacity. You need both power and weight reduction to get to the position that G-forces require a dry sump. The only car that was having oil problems is the silver Z. I have driven the blue one for years (it has over 550hp - 1550kg) with no oiling issues, I raced the red one for many years quite hard no oiling issues (550hp - 1400kg). It is only when the silver car (600+hp - 1200kg) racing hard on slicks that we started getting the oiling issues and believe it required a dry sump. I doubt any street driven car with the weight penalty of interior and airconditioning (and presumably not running slicks) would get to the situation where it needed a dry sump. Now I assume that if you were drag racing it, that it would not be requirement. but I have not really thought about that too much.
Disclaimer I am an 300zx enthusatic not a mechanic or an engineer. Happy to share info, and might have some cool photos of something else to share tomorrow. Don if you want to email to have more discussions, please feel free, happy to discuss, whether we agree or not.
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