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DRY SUMP (non MFR) Regular style ?

Old 09-28-08, 04:52 PM
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DRY SUMP (non MFR) Regular style ?

Hello all, I loooked in the mazda racing catalog and it seems they used to offer the belt driven set ups before. My question is, does anyone have part numbers for the pulleys & the mount bracket ? Or any info on the kit. I searched here & have gone through all 10 pages there was a couple of post frome people who have done it this way but not too detailed.

Also any information and pics are welcome. THANKS
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Old 09-30-08, 11:45 AM
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Soooooo nobody here knows anything on the subject ? Beleive it or not I dont find anything much on the web either.

Anybody have info or pics of the IMSA GTU cars or private cars from back in the daythat might have used this set up before the MFR peice became standard practice !!! LMK
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Old 09-30-08, 05:56 PM
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I may have some info on the system we used to use on an EProd car. I just didn't have the specific info you were looking for.

We made our our own bracket to hold the pump in the area of the stock AC compressor. I can get the pump info and what pulleys were on the car. Its all in a box somewhere in the shop.

FYI, we used the stock pump as the scavenge pump and it sent the oil to a 12qt tank.
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Old 09-30-08, 10:56 PM
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Hello, thanks. Any info you have will be welcome. I just picked up a 3 stage pump yesterday & Im waiting for the dry sump pan from mazdaspeed. Did you setup use the Gilmer style belt. Because thats what mine has on it

I need to know what you did as far as attaching the drive pulley to the ecentric shaft. THANKS A BUNCH
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Old 10-03-08, 07:27 PM
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Airaid used to built a "kit" for the rotary. Mazda front cover setup is the best setup and it costs nearly the same if you built the kit with a remote pump. Most cheap dry sump pumps that can be sourced from the NASCAR boys don't flow enough at high enough pressure for the rotary engines needs. A few years ago I discovered the flow rate of the front cover setup and priced the corresponding pump and accessories and it cost the same. Last time I called airaid they hadn't sold the mazda parts for many years and were not sure they could make it for a good price.
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Old 10-04-08, 03:56 PM
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Here are some pics for you. Both of these front covers were made by other people, they have just ended up on the shelves at my shop over the years.

The one with the O-ring scavenge pipes is pretty nice. The other one with three pick up fittings is kind of "iffy". The pipes on it are made from copper plumbing pipe and there is some kind of epoxy all over the inside of the cover to seal things up. It wouldn't be bad, I would just make different scavenge pipes if it ever got put on an engine of mine.

The pump came off an ARCA car and we used it on an EProd car for a couple years, we just made the shaft shorter to get rid of the scavenge sections of the pump. The stock pump works fine for scavenging the stock pan and with 12 quarts on board there was never a problem with oil supply to the pressure pump. This was all removed to take the weight out of the car and to simplify things. You can get different pressure springs for these pumps and we had over 180psi one time when we were trying to figure which spring to put in!

I can't find the pulley that was on the e shaft to save my life. It used the lip on a Racing Beat pulley to keep it centered and was attached with few small bolts.
Attached Thumbnails DRY SUMP (non MFR) Regular style ?-dsc03987.jpg   DRY SUMP (non MFR) Regular style ?-dsc03988.jpg   DRY SUMP (non MFR) Regular style ?-dsc03989.jpg   DRY SUMP (non MFR) Regular style ?-dsc03991.jpg   DRY SUMP (non MFR) Regular style ?-dsc03993.jpg  

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Old 10-05-08, 02:36 AM
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Jgrewe -- Thanks for the info ,thats great . The first 2 pics are very nice when compared to the MFR set up. As far as the drive Im gonna have a custom E-shaft bolt machined with a shaft on it !!!??? Using the stock pump as the scavenge is a neat idea also,for folks that dont want to mod the housings,irons, and front cover,also the pan.

What you said about youR drive set up, was suggested to me also by the Technical director at racing beat,I spoke with him on the whole subject at lenght.And as far as cost I am well bellow the cost of the MFR peice. And anyone should be able to go external pump for well bellow MFR price.




As far as these type of pumps not being able to supply the needed presure, is not true you can also ADJ the drive ratio to make the pump do what you want

Keep the info coming THANKS ALL!!!

Last edited by MRJACK$ON; 10-05-08 at 02:49 AM.
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Old 10-05-08, 10:39 AM
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MORE INFO!

ive been eying ex nascar pumps for years on ebay. To not have to go with the mfr would be awesome.
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Old 10-05-08, 03:12 PM
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^^^^ what else info ar you in heed of???
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Old 10-05-08, 03:40 PM
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how would you use the stock pump to scavange the pan? would you use the line going to the oil cooler to pump into the resi? then the dry sump would pump back into the motor through the other side?

can the stock pickup tube be modified so that the oil pan can be replaced?
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Old 10-05-08, 03:59 PM
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Originally Posted by ghiaracer View Post
how would you use the stock pump to scavange the pan? would you use the line going to the oil cooler to pump into the resi? then the dry sump would pump back into the motor through the other side?

can the stock pickup tube be modified so that the oil pan can be replaced?
We ran the line out of the engine right to the tank. The pressure pump took oil from the bottom of the tank and sent it through a remote filter that split the oil to two lines to go through two coolers in parallel. These lines came back to the engine at the front a rear, one through the top in the back where the stock filter is, the other straight into the galley in the front plate that had the plug drilled out and tapped. The stock rear regulator was left in, the oil just runs backwards in the vertical galley under the stock filter spot.

It might be tough to modify the stock pickup to do a plate on the bottom of the engine. The spot it mounts is very close to the bottom of the engine and there probably isn't enough room to make a bend. You could do a shallower pan with no problem.

Our first tests involved seeing how well the stock pump would re-prime if the pan was sucked dry and it pulled air for a while. As soon as we dumped another quart in the engine it pushed it into the tank as fast as we could pour. This was done with a mock up engine using a drill to turn the pump from the CAS hole.
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Old 10-05-08, 04:36 PM
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You mentioned eliminating your drysump setup.. willing to part with one of those front covers? or a whole setup?
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Old 10-05-08, 09:56 PM
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Sorry, nothing for sale right now. I never know when I'll get another urge to build something different. I'll keep you in mind if I need to make room on some shelves.
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Old 10-31-08, 11:13 AM
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Hello all, well I finally got the flat plate from Mazda Racing ,& did a lil fab work to it . Drilled two 3" holes in it & made some cup like pick ups using 3 " piping with a -12AN fitting in it. Im gonna get the race regulator from racing beat today & put a flush pipe plug in the front regulator and close up the motor

The next step will be coming up with a drive system from the E-haft!!! I have an idea ,I just need to find a machinist to make what I want
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