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AMX 401 Take 5
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Rebel Machine View Drop Down
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Points: 5121 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Rebel Machine Quote  Post ReplyReply Direct Link To This Post Posted: Sep/29/2014 at 5:09pm
Originally posted by Red Devil Red Devil wrote:

Rebel Machine: How long is the 1st gear run from idle-5500rpm? 5 seconds? Less?

Here's a simple test you can do:
- remove distributor and oil filter
- connect a 1/2" hose to the filter mount pump outlet and run into a clean pan
- use a priming tool with 2800rpm drill
- run it for 5 seconds and see if you pump the pan dry. Since flow is unrestricted and continuous rpm (2800rpm drill = 5600rpm engine), should be more than double the flow you would see in a 5 sec. idle-5500rpm run ... and has zero drain back.
- then keep running the drill until it stops flowing and see how much time it took

Then realize it can't pump the pan dry in a short run.


Reaches 5,500 pretty quick, definitely less than five seconds.

That sounds like an interesting test, simply run the pump without any resistance to flow and see how long it takes to empty the pan. 5,500 RPM would be 2,750 RPM so if the drill would spin that fast it would equal where I'm seeing the pressure drop. Might have to drive the car around to get it up to temp then quickly perform the test.

-Steve-
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Boris Badanov View Drop Down
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Points: 4210 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Boris Badanov Quote  Post ReplyReply Direct Link To This Post Posted: Sep/29/2014 at 7:34pm
I got a bridge in Brooklyn for sale.
 
 
Gremlin Dreams
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Slate View Drop Down
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Points: 2782 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Slate Quote  Post ReplyReply Direct Link To This Post Posted: Sep/29/2014 at 9:15pm
Originally posted by Boris Badanov Boris Badanov wrote:

I got a bridge in Brooklyn for sale.
 
 

Yeah? How much?

Steve
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Boris Badanov View Drop Down
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Points: 4210 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Boris Badanov Quote  Post ReplyReply Direct Link To This Post Posted: Sep/29/2014 at 9:21pm
I bet a lot less than the money poured into this Easter egg hunt......
Gremlin Dreams
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xfactor View Drop Down
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Points: 478 		Post Options Post Options   Thanks (0) Thanks(0)   Quote xfactor Quote  Post ReplyReply Direct Link To This Post Posted: Sep/29/2014 at 10:17pm
Come on guys admit it, You would all like Rebel Machine to drop this motor off at your place so you could play with it and prove your ideas. Great thread 
Ray Harper 69 AMX 401
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Slate View Drop Down
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Points: 2782 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Slate Quote  Post ReplyReply Direct Link To This Post Posted: Sep/29/2014 at 10:37pm
Originally posted by Boris Badanov Boris Badanov wrote:

I bet a lot less than the money poured into this Easter egg hunt......

Sold!

Still, Easter Egg hunts are fun because you are surprised by what you find and where. I see no issues with what Reb wants to do.

I'd love to have that engine here at home, I'd run it as is!

Steve
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Boris Badanov View Drop Down
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Points: 4210 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Boris Badanov Quote  Post ReplyReply Direct Link To This Post Posted: Sep/30/2014 at 6:38am
I would pull it, correct the pick up height, install a windage tray (I love them) and external drain it.
With my access to machines it would take a few hours and the thing would be just fine.
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Red Devil View Drop Down
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Points: 1743 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Red Devil Quote  Post ReplyReply Direct Link To This Post Posted: Sep/30/2014 at 8:23am
Originally posted by Rebel Machine Rebel Machine wrote:

Reaches 5,500 pretty quick, definitely less than five seconds.

That sounds like an interesting test, simply run the pump without any resistance to flow and see how long it takes to empty the pan. 5,500 RPM would be 2,750 RPM so if the drill would spin that fast it would equal where I'm seeing the pressure drop. Might have to drive the car around to get it up to temp then quickly perform the test.

-Steve-


I would not test hot - too much risk of hot oil splash. It will flow more cold than hot (less internal pump leakage).

If run is 3 - 4 seconds and you start at 800rpm idle and run to 5500rpm, could run the drill constant 4 sec. at the average rpm (1575rpm drill). Then keep running till it stops pumping and check how much is left in the pan. This will help gauge the minimum level in the sump.

When you have the pan off, tilt it at 45deg to simulate max acceleration and fill to get the same minimum level to see how much oil is needed in the sump.

Hope this helps,RD.
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Red Devil View Drop Down
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Points: 1743 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Red Devil Quote  Post ReplyReply Direct Link To This Post Posted: Sep/30/2014 at 8:25am
.

Edited by Red Devil - Sep/30/2014 at 12:29pm
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RAZER View Drop Down
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Points: 147 		Post Options Post Options   Thanks (0) Thanks(0)   Quote RAZER Quote  Post ReplyReply Direct Link To This Post Posted: Sep/30/2014 at 11:09am
I just don't see how running a drill on a cold static engine is even in the same ballpark as his 1st gear run.
Just the pumping pressure from the lifters when running makes that test unusable info.
Not to mention the hundreds of other differences between a running and none running engine.
Am I missing something?
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