Fantastic stuff, keep it coming!

 

Thanks guys...I try to keep moving along- a little each night!!!

Black 75-
How about this- a 1928 ****** w/ a blown BMW V12...




For those who are looking to use their stock mechanical oil pressure gauge- and run braided stainless steel line-

I finally found some adapters-

AN4 to 1/8 NPT are easy to find- but the back of the gauge is like GM only threads. After looking all over online- I stopped by my local NAPA- as usual he just sends me in the back and lets me look for it.

It was like part number 202-09 or at least that's what the drawer said.

Then attached that to a female to female 1/8 NPT and I was there!!!
Now I'm gonna hook it up to my wife's BMW and see how well it reads
(No honey, I'm just checking your oil...... pressure..)

I just got off the phone w/ my machinist- I meeting him for breakfast and he's got my mandrel/adapter for the BMW's crank to run the Dry Sump pump. So it's coming together!!!

You can also see in the background my new sidepipe covers...

 

OK...I'm really gonna move forward this weekend. I've finally got the dry sump system figured out. Tough part was driving the crank gear and finding something that would work.

EVERYTHING out there is for Ford or Chevy- My friend at Kinetic racing had one for a BMW but they run a 1:1 ratio- way too much for a street car. A street car should be about 50% of crank speed. I'll be at 52%- any higher and I'll be pumping a bunch of oil through the bypass hose.

So- after searching on eBay- I bought a Chevy mandrel- had my machinist buddy turn it down about 1/2"- then I designed an adapter and he made it. After a couple trial fits-I figured out where everything needed to be- w/ not a lot of extra space to work with.

The next problem was belt size- I'm running a HTD gear set up and the belts only come in a few sizes- I lucked out- where as a 680mm fit perfect...other wise it was gonna be an expensive custom made belt...I got this one for $15 on eBay!!! And it's an "official" NASCAR belt!!!


Here's the mandrel- cut down w/ a keyway milled for the gear and the 3/8" aluminum adapter.



And finally ...on the car. After test fitting I'm gonna powdercoat the gears.



Not a whole lot of room left over...

 

That car will be too cool to drive with a hood on. Maybe u can blend in some clear Pyrex into the hood over the engine.
Curious, what output pressure is that oil pump? Is it regulated?

BTW, i wish i could afford NASCAR belts. I buy all mine a Walmart and they fail every time i have too much barbeque.
Good luck Richard,
cardo0

 

Thanks cardo!!!

The pump itself has a adjustable spring regulator to control the pressure. And from what I understand- If it's still too much (or too little) I can simply change the gears for a different ratio. The pump I'm running has a much larger gear than the stock BMW-about 33% wider.

Stock BMW is on the Right........BMW one is thinner- but has more teeth....




I'm also running the stock BMW external Oil Filter housing- it has a bypass when there too much pressure as well.

And I'm guessing the NASCAR belt will make my car faster.....

Richard

 

That's a gerotor type pump, which is constant displacement. Constant displacement meaning they flow a constant amount for each revolution but as rpm increases so does volume flow. So unless its regulated it will push up pressure until something busts - or it bypassed by a regulator. Well do i believe they top out something like 1500psi.
It would be interesting to see what kind of pressure u get while driving. Do plan to install/use a oil pressure gauge?

Nice work and good luck,
cardo0

 

Cardo-

I originally bought a Weaver (AKA Stock Car Products) dry sump pump. I thought a dry sump pump was a dry sump pump... It had the spur gears like the most standard passenger cars (Chevy/Ford/Mopar etc...)

As I was taking apart the BMW STOCK oil pump- found out it was a geroter type - with two pick ups- one off the stock windage tray and the other from your standard oil P/U in the pan.

So I read up on the designs- seems the best way to go is the gerotor- only downfall is if something gets in the pump (metal/debris)it would/could lock up- where as the spur type gear was less prone to debris locking it up. BMW's have been running this type of pump for 20+ years on the street w/ out any problems- so I though it was the way to go.


I found/bought a Peterson pump. I talked w/ their techs- and they said I shouldn't have problems- unless I was running to 10 grand all the time. And ½ engine speed was about where I needed to be.

I have also read about the vacuum created- which should give me a few more ponies helping the rings seal. And since I'm getting rid of my vacuum tank ( for wipers/headlights) they should still work fine w/o it.

I've got two bypasses- so I'm thinking there shouldn't be any issues. The regulator on the pump itself- and the regulator on the stock BMW external Oil Filter housing.

If you look up a couple posts- you'll see I was able to hook up my stock mechanical oil press gauge to where the BMW electronic sensor was mounted on the external oil filter housing.

Richard

 

Yeah, but you'll only be able to turn left!!


Scott

 

Wow cool ******!

 

This car is really coming along great

 

Thanks!!! Saint

Scottyp99- What about Watkins Glen???

Here's the accessory drive & sump pump finally finished and ready to run. Just need to drill holes in the pump bracket and I'm done.

I spent some extra time making the serp belt easily changed- had to mod the bracket so all that was needed for a belt change was a 13mm ( OR ½ !!!) socket...

It all fits - nice and tight- And NOT one mod on the frame at all!!!

Everything is BMW off the shelf parts-and stock sizes in serp belt and oil pump belt. Alternator is a stock off the shelf Geo Storm piece.

And I've left enough room to run the water hoses...and a Dewitts twin fan set up.

Richard

 

[/QUOTE]

 

I am so impressed with this swap and your workmanship, keep the pictures coming. Are you going to run sidepipes? That would sound sick I am sure!

 

Definately a tip of my hat to you sir!

I am actually going to do a V12 BMW swap, but not into a vette. Seeing your dry sump setup and your bellhousing mods are a confidence builder for me. I have my motor, now to get the rest.

Keep up the FANTASTIC work.

 

Scottyp99- What about Watkins Glen???


Touche!!!


Scott

 

Thanks for the compliments....

Yes- Bostoncamaro- I am going to run sidepipes. I have the factory look covers in fiberglass that are chromed.

Team Unter Puff- If you need any help-wiring- or anything to do w/ the M70's- feel free to email me- I've saved all my documentation. Richard454@comcast.net

 

where did you get your sidepipe covers chromed? is it a durable coating? and is it cost effective? it looks great.

 

Nice work.

Hope to God that alternator never goes out. Ouch

 

7t9l82-

I bought the covers already chromed from another forum member...and from what he said it cost to have them chromed- I would say it's NOT cost effective.
One of them got scratched in shipment to me- so as far as durable- I'm gonna say disappointingly, NO...


cuisinartvette-

It really shouldn't be too tough to swap out the alternator. Two bolts and it'll drop out the bottom. I've spent a lot of time to make this car serviceable - because I KNOW stuff breaks. And I do plan on driving it!!!


Originally I was looking at running the stock BMW air cooled 125 amp alt- but I'd have to pull the engine to change it...

The GM original to the car ( supposedly rated at 63 amps) was almost as big as the BMW.

After going to a couple of junkyards and researching on the internet- I found out about the Geo's alternator- the smallest around. There's even some Honda Goldwing owners putting them on their bikes because of the small size. Mine came off a Geo Storm w/ AC- and is rated at 75amps- and there's a step up model rated at 85 amps.

BMW (left ) GEO (middle ) GM (right)

 

A little bit more progress.....

I got a GM temp sensor from the guys (and gal) over at Full Throttle Corvette. I took the x-over coolant pipe between the heads where BMW has their temp sensors on top and had my buddy weld in a thread for the GM sensor. Turned it inside towards the engine- so it wouldn't interfere w/ the firewall/wipermotor.





After I figured exactly where my Dry Sump Pump was going to fit- and the belt would not hit the x-member- I marked the aluminum bracket and took it to my welding buddy. He added a nice chunk of aluminum to make sure the pump didn't move around- no washers needed for me!!!






I also had to clearance my oil inlet bracket- Countersunk the hex bolts and had my buddy angle the AN 12 fitting to clear the motor mount. Also tapped the lower side for the bypass oil coming from the oil filter housing.



Getting closer to starting it...

Richard