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wesgardner
12-18-2006, 10:54 AM
Hey All,

My old Mallory distributor (I upgraded to electronic from points-type) has finally given up. I'll be replacing with one already set-up with an electronic module - hopefully my existing coil will work.

Here's the new one -

http://store.summitracing.com/partdetail.asp?autofilter=1&part=MAA%2DYLU624AV&N=700+115&autoview=sku

JohnnyB
12-18-2006, 12:03 PM
Additional questions i'd have beyond whether or not you need a new coil:

1) Rotation? I'm not sure whether a 454 rotates CW or CCW and how that translates to LH vs. RH. The one you chose is CW....
2) Do you need a ballast resistor?

Hopefully, someone with experience will chime in here........

My own :twocents::

I probably would've spent a few more $$ and ordered it from SKIDIM (www.skidim.com) via phone....they would've talked you through every thing you need and how to do it if you needed that too. You'd also be assured that you got the right one because they know ski boat engines. You can certainly still call them and ask for their advice...they're really are helpful folks.....that's why they get my business even when they're not the cheapest price on the net.

wesgardner
12-18-2006, 12:40 PM
Hey Johnny,

Here's a bit of info on distributors....seems the one I've looked at will work with my coil...but yeah, I typically use skiDIM for all my parts and will give them a shout out on this...my distributor has the suffix "AV" - the "A" maps the advance curve and designates "standard" rotation...this is Mallory stuff dunno about Delco...
http://go.mrgasket.com/pdf/Revers_RotatEngine.pdf

TRBenj
12-18-2006, 12:53 PM
That Mallory Unilite will be superior to the old style distributor. I dont think SkiDIM carries it. Be sure to read the instructions carefully- the Unilites dont like high output coils, and some may require the ballast resistor.

When my EI module quit last spring, I decided to upgrade to a full electronic distributor as well. I considered the Mallory, but decided to go with a DUI from Performance Distributors. (http://www.performancedistributors.com/marinedui.htm) I think its a better product for marginally more money, plus it cleans up the wiring since it incorporates the coil and distributor into one unit.

JohnnyB
12-18-2006, 01:17 PM
Hey Johnny,

Here's a bit of info on distributors....seems the one I've looked at will work with my coil...but yeah, I typically use skiDIM for all my parts and will give them a shout out on this...my distributor has the suffix "AV" - the "A" maps the advance curve and designates "standard" rotation...this is Mallory stuff dunno about Delco...
http://go.mrgasket.com/pdf/Revers_RotatEngine.pdf

Wes,

Thanks for the info....a guy can learn something everyday :D

wesgardner
12-18-2006, 03:31 PM
Hey TRBenj,

I'm hip on this DUI stuff...seems the dollar amount is negligable so I'll probably go for it...I didn't realize these were so easy to change out...thanx for the heads up

Wes

loeweb
12-18-2006, 04:54 PM
so what's the difference in putting in a new distributor, and putting in electronic ignition? Just wnat to know the difference thanks

TRBenj
12-19-2006, 10:31 AM
When you convert to EI, you are simply replacing the points in your distributor with a new EI module. You dont actually change the distributor housing or any of the weights and springs that control your advance curve.

Wes, if you decide to go with the DUI, make sure you have all your engine info in front of you when you call. They'll ask for cam, head, intake, RPM range info, etc. and set you up with a custom advance curve. The other thing you will may need is new plug wires, as the DUI uses GM HEI style contacts. I had a hard time finding ones that would work for me, so I built my own from a universal kit.

http://i41.photobucket.com/albums/e260/TRBenj/Myarrestor.jpg

wesgardner
12-19-2006, 01:20 PM
Hey TRBenj,

Thanks for the heads up, I'll call and have a chat...that same company offers "LiveWires" (or something like that) with the appropriate ends - seems they're about $100 a set...some of my current wires have had the ends pulled off so I'm probably due a new set

TRBenj
12-19-2006, 03:30 PM
Yup, the livewires are extremely expensive, but seem very well built- they sent a sample one with my DUI. The problem with finding a good set of wires isnt the terminals (it is a common set up for GM's), but rather finding wires that are long enough. Most plug wires for automotive applications go over the valve cover instead of under the header. I spent $40 on my universal Taylor 8mm spiro-pro kit, and got to make them the exact length I wanted. If you find a kit that works well for our boats, let me know!