I've heard of these guys before, but didn't realize they offer more than just add-on crank scrapers. Their BB Mopar page has some interesting mods they do which look like they could be really good ideas for someone like myself staying w/ an OEM-type pan like the Milodon Street Hemi piece shown here.

Can anyone comment on the effectiveness of adding a crank scraper and, possibly, their "dual level" screen / tray modification over simply running a full-length Milodon louvered windage tray? Thanks.

I bought one for my SB a few years back.. had trouble with the installation and these guys read my post.. So they sent me another one without me having to ask..

They are in my book

There are other pictures of that particular screen / tray combination shown on the page I linked to above. The windage tray is definitely still there, although modified.

I suspect the screen is used above it to help diffuse the oil's tendency to bounce back into the crank when the tray is so close to it. I.e., use the screen to break down the oil into droplets and to keep the oil from coming back into the rotating assembly so easily, then use the tray to direct it back into the sump where it's shielded from being pulled back out.

Yea, you guys are correct! I didn't look close enough the first time. But now I'm curious why they wouldn't have cut out the solid part of the tray. It would seem that the screen could shield the sump oil from the windage being generated. Unless the tray helps keep oil sloshing around on accelleration from splashing up?

Either way, I like their stuff and have their dual-sided scraper on my 360 with no tray.

Ive used several of these. In fact, I discussed this setup with Kevin before it was available and the ones he has pictured are probably for one of my builds.

Here is my take...

It made a lot of sense for the type of builds I had here. I needed to run a stock pan with a pretty stout motor with potential windage issues. I will tell you this. Be prepared to spend a MOUNTAIN of time fitting the scraper properly. It takes me more than one full day of grinding and fitting to get everything where I wanted it to be.

I always wanted to dyno test it. Never got the chance. Its a pain to get everything installed and sealed all up. The last thing you want to do at that point is take it all apart and do it all over again for the sake of a test, but I did have my concerns.

I will say this much. These engines see relatively high rpm on the dyno and the oil pressure was always ROCK SOLID. On the first build I used a more conventional tray with no scraper and had some oil pressure issues at the top of the pull. It wsant horrible, but I did get a bit concerned. Had NO such issues on any of the ones with the scraper/screen/tray combo. I did have the inside of the pan, and the tray coated with an oil shedding film from Swaintech.

I have a complete setup here, if anyone needs to see anything just let me know and I will post up a pic.

Your results may vary.

MB

I have a IJ scrapper and Milidon 32000 stock stroke windage tray. The tray clears the 4.25 arm without modification w/ .25" girdle. I custom fit the scrapper that Kevin made from a pattern that I sent to him. Like Mike says, its not a five minute job fitting it. I located the girdle, tray and scrapper to the block with pins. I have full time, unrestricted oiling to the rockers, and normally shift at 6500, but it has been 6800+ several times with no fluctuation in the oil pressure.

I cannot say if it made a difference, and if it did, how much.

I use their scraper without a tray and the oil pressure is very solid with no fluctuation.

Haven't used the product, but Johnson is a very bright and well-informed guy - read some of his posts at http://speedtalk.com/

Windage trays have different tasks asked of them that are virtually opposite in nature.

The screening helps dissipate the kinetic energy of high speed droplets bouncing off the interior of the tray (smooth metal surface). I closely examine used OEM trays for witness marks. In the Honda b-series section of the website there are pics of a louvered Honda tray showing that oil does bounce back up. Once the rotating assembly strikes it the energy is lost forever as far as motive output is concerned.

The stock Milodon tray is modified to allow draining oil trapped on top of the scraper to drain through. There are also slots cut through that allow the downstroke scraper to shunt oil under the tray prior to it entering the curved section. Milodon uses this general idea on their Ford FE tray.

The pictures on the website are not up to date. The tray also has a deflector rib similar to that seen on the modified stock tray. I did not add screening to the stock tray in order to offer a less expensive alternative. One stock tray similar to the Mopar is found in the Toyota 4AGE. I have been adding internal screening to them for many years now.

Multiple layer trays should be the norm but they are expensive to manufacture. The Nissan RB26DETT has triple layer trays in areas.

It is a big topic area.

Thanks for chiming in here, Kevin.

MB

I'm not sure of what's happening in the pan, but a few questions?
Is the speed at which an oil droplet strikes the screen a function of the counterweight OD × engine speed, viz. "flung off" by speed in f/s at the OD?
Is there a rule-of-thumb on how far below the CW a screen becomes less critical?

MIT has two theses on file that examine windage tray application in a Ford V6. Parts of the research in these papers were published by the SAE as well.

http://hdl.handle.net/1721.1/38713

http://hdl.handle.net/1721.1/32358

http://papers.sae.org/2007-01-4109

http://papers.sae.org/2004-01-2913

Be aware that Porsche did the original engineering for the engine and sump and Ford altered the approach, basically increasing the oil fill. There are some (serendipitous) errors in analysis in the Baran SAE paper.

In the mid 1970s, Mercedes presented an SAE paper (750051) discussing many topics that would be relevant in this discussion. I have the sense that they were trying to help Porsche in their travails with the 928 V8 and windage control.

Thanks for those links Kevin , I'd love to see the video related to the second link , I'll have to see if it's available to view.