LT1-LT4 Modifications 1993-97 Gen II Small Block V8

OEM to Electric water pump

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Old Aug 21, 2014 | 02:05 PM
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Default OEM to Electric water pump

Going from the stock oem water pump to a summit electric. My question what do I do with the shaft that goes from the timing cover to the water pump? Do I need to purchase a new timing cover or a type of plug? 94
LT4
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Old Aug 21, 2014 | 04:53 PM
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no, just keep the coupler sleeve in case you ever go back to mechanical

wire the pump with a repay & fuse
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Old Aug 21, 2014 | 05:48 PM
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Originally Posted by ******
no, just keep the coupler sleeve in case you ever go back to mechanical

wire the pump with a repay & fuse
What about the shaft the coupler fits onto that comes out the timing cover?
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Old Aug 21, 2014 | 07:05 PM
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Originally Posted by thumpr
What about the shaft the coupler fits onto that comes out the timing cover?
just leave it. Mine has been that way for 16 years now

If you remove it you will need to plug the TC
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Old Aug 21, 2014 | 08:17 PM
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Originally Posted by ******
just leave it. Mine has been that way for 16 years now

If you remove it you will need to plug the TC
Ok. Wasn't sure if they made a plug or not. Thanks.
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Old Aug 22, 2014 | 09:45 AM
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Originally Posted by thumpr
Ok. Wasn't sure if they made a plug or not. Thanks.
If you want to plug it, there's a frost plug that any machine shop should have on hand that presses in, that's what I did. Also, if you've eliminated your secondary air system you can use that circuit (fuse and relay) to power the EWP with ease! Super easy and the RIGHT way to do it IMO. Let me know if you need help with that.
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Old Aug 22, 2014 | 12:06 PM
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[QUOTE=kris72079;18386274]If you want to plug it, there's a frost plug that any machine shop should have on hand that presses in, that's what I did. Also, if you've eliminated your secondary air system you can use that circuit (fuse and relay) to power the EWP with ease! Super easy and the RIGHT way to do it IMO. Let me know if you need help with that.[/
QUOTE]
I still have the air pump and all the emissions tubing as the car was tagged and I needed to pass emissions. But now that I am taking it off the street and going full race I have to make several changes. Hence the EWP and other changes.
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Old Aug 22, 2014 | 10:33 PM
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Just rebuilt the motor on ours; removed the gear and shaft when disassembling and punched out a plug and welded the hole up during reassembly.
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Old Aug 22, 2014 | 11:00 PM
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Ok, gonna have to look into plugging it. For some reason even with a new seal I got a small leak from TC cover.
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Old Aug 23, 2014 | 10:34 AM
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Originally Posted by thumpr
For some reason even with a new seal I got a small leak from TC cover.
the most likely suspect for TC leak is the WP drive gear seal. The inner seal lip can fold over on install. There is a "tool" but a few home made versions (sharpie pen cap, socket) also work. The WP & Opti seals install "dry" BTW.
Attached Thumbnails OEM to Electric water pump-wp-drive-seal-tool-1.jpg   OEM to Electric water pump-wp-drive-seal-tool-2.jpg   OEM to Electric water pump-wp-drive-seal.jpg  
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