gerotor front cover, rev A -- pics

[KendallF]

Well, here are some pictures of my second attempt at a gerotor drive oil pump front cover using the bottom half of a 3800 cover. This time I made a jig to weld it on, used a S2 drysump front cover as the donor for the top half, used 1/4" aluminum for the splice piece, and generally did a better job.

I'm happy even though it was a pain in the *ss to weld. My friend who welded it says he's not doing another unless I break this one.

gerotor cover rev A

gerotor cover rev A

gerotor cover rev A

gerotor cover rev A

 

[turbodave231]

Kendall,

Your cover looks good!!! I hope it works out as good as it looks.

Question, Why couldn't we use a fwd v6 gerotor front cover from a VIN 3 or B (non- 3800 engine)? The only problems I see are that the waterpump outlet points the wrong way. And this doesn't really present a problem for me because I am using a meizzer pump.

I'd have to block off the pump outlet, make a new plate to mount the electric pump, mount a magnet on the cam gear and fab a lower crank gear to drive the pump.

Have you considered this? Or am I overlooking a show stopper?

Just Thinking Outloud!

Dave

 

[KendallF]

Dave,

I remember the cover you bought on Ebay. Did you figure out if that was a stock or modified part? I haven't found a front cover that fits a 3.8 block and has the gerotor pump. If there is one, that sure would make it easier!

The cam sync signal might be a problem, depending on which ECM you're running. The switch from Hall effect to magnetic pickup will make the signal look different. I would like to use the mag pickup and eliminate the stock cam sensor..sure would be neater.

 

[turbodave231]

Kendall,

The front cover I got on ebay is a stock 3.8 fwd cover. It was used on a S2 engine as a dry sump cover. The gerotor pump section was epoxied up. All the oil passage holes lined up perfect with the stock front cover gasket.
I don't know why it wouldn't work. It looks like the cover will fit over a gear drive with no problem.

BTW. the cam sensor that goes in the FWD covers are all Hall effect sensors. They produce the exact same signal as the turbo Vin 7 senor. So the ignition module should not know the difference.

The FWD Vin 3,B and L engines from 86 to 88 all use the same ign module as the turbo engine. The 3.0 Vin L engine uses a dual crank sensor instead of a cam sensor. The module just receives a cam signal every rev of the crank and the engine operates MFI not sequential but it is still the same module.

I am going to look for one of these covers for future use. My new motor is already assembled with a stock cover. That gerotor design is really the whip! It will supply more oil than you need....period. The oil presure bypass becomes very critical with a gerotor pump.