Mercruiser Black Scorpion parts?

(camassanger) · (camassanger) **Join Date: Oct 2009** 08-31-2014, 10:23 AM

Time for new plugs and wires for the Mercruiser Black Scorpion 5.7. Can anyone recommend a good online resource to buy these?

(mach90) · (mach90) **Join Date: Jun 2009** 08-31-2014, 10:37 AM

Quote:

Originally Posted by camassanger

Time for new plugs and wires for the Mercruiser Black Scorpion 5.7. Can anyone recommend a good online resource to buy these?

http://www.skidim.com provides a great service to the industry.

Any chance your boat has a shower and/or heater? I'm thinking about installing into mine and would like to see where the "factory" location is.

(camassanger) · (camassanger) **Join Date: Oct 2009** 08-31-2014, 11:44 AM

Thanks for the link. I don't have a shower, but here are pics of my heater. Let me know if you have any questions. One note of interest: I did see a few issues with perfect pass when turning on and off my heater (big amp draw at startup). Perfect pass still worked fine, but the display would go out. Ever since I installed the power-gate, no issues: http://www.perfectswitch.com/isolato...ier-isolator/#
No I don't work for them or have any interest whatsoever - its just a great product IMO

Here's the heater:

(nailem) · (nailem) **Join Date: Apr 2011** 08-31-2014, 4:35 PM

I just put Taylor 8.2 wire on my 5.7 BS only problem was the ignition wire has the wrong end on it and won't connect to the coil. I need to find the correct crimp on end for this. I run NGK tr55gp plugs.

(wakebrdjay) · (wakebrdjay) **Join Date: Apr 2008** 08-31-2014, 6:02 PM

Pull one of your plugs,look at the number and go buy the plugs at your local auto parts store. They will cost about 1/2 as much as a boat shop.

(camassanger) · (camassanger) **Join Date: Oct 2009** 09-01-2014, 2:36 PM

Great idea Jay, I'll do it! Any idea on the wires? I am thinking I ought to just go to the autoparts store and get a wire set for a Chevy 350 and it ought to work, right?

(meathead65) · (meathead65) **Join Date: Sep 2006** 09-01-2014, 3:26 PM

No, you'll need marine specific wires to clear the exhaust system on your Mercruiser. Save yourself a headache and pay the extra money for a proper set of fitted marine spec wires.

(nailem) · (nailem) **Join Date: Apr 2011** 09-01-2014, 4:59 PM

Not true. The Taylor wire set I got was plenty long enough.

(meathead65) · (meathead65) **Join Date: Sep 2006** 09-01-2014, 5:33 PM

There are exception to most rules. Some 5.7 wire kits will have straight plug boots, some will have 90's, some will have 45's. Might get lucky, like you did, might get completely wrong wires. You got wrong coil wire, meaning another trip to store or modifying what you have.

I always prefer correct, made to fit wire kits. Ignition misfires from ill fitting wire ends or wires cross firing or grounding will ruin your day.