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-   -   Spark plug wire question (https://www.offshoreonly.com/forums/do-yourself-boating-budget/362208-spark-plug-wire-question.html)

Prestigeworldwideee 08-03-2019 10:15 AM

Spark plug wire question
 
Okay guys, don’t murder me over this question.... I wanna replace my old stock 1989 spark plug wires on my 1990 454 mag. I see the part number 3q89 and I saw one wire that said 4q89. I’m having trouble finding them online and I’d rather skip a store where I’ll be charged way more. Any info and or links would be awesome, eBay is usually my go to for parts.

flashgordon 08-03-2019 12:33 PM

hello,
i buy almost everything i can from summit . com !!!!!!!!
their return policy is great ,,,fast delivery,
cant beat them
i do sometimes suf around and buy from other shops...
just my 2 cents

SB 08-03-2019 01:59 PM

The last two#'s stamped on the ignition wires from Mercruiser are the year the wires are made. Nice feature so we know how old they are. If 89 is last two #'s on the wires, yours are original as they where made in 1989. Yup, that old...lol...I removed a set of 88's on a boat last year....amazing...

Your engine should fall in this serial # range in link below. If so, click on 'Distributor and Ignition components' for the ignition wire part #.

https://www.mercruiserparts.com/454-...8-1988-1992-0b

F-2 Speedy 08-03-2019 02:09 PM

if the pugs are from 89 do them to.......:D

speicher lane 08-03-2019 02:12 PM

FWIW, I put Taylor Ign. wires on my BB cars but I cannot state if you will have issues on a stock Mercruiser/ marine electronics due to RFI interference. Some threads have indicated that problems started with aftermarket wire sets and resolved with a factory replacement set

(Hell yours are 20 years old so they do work!)

Prestigeworldwideee 08-03-2019 03:18 PM


Originally Posted by F-2 Speedy (Post 4700154)
if the pugs are from 89 do them to.......:D

yeah, I already replace the plugs. They were original too and looked terrible!

Prestigeworldwideee 08-03-2019 03:25 PM


Originally Posted by SB (Post 4700152)
The last two#'s stamped on the ignition wires from Mercruiser are the year the wires are made. Nice feature so we know how old they are. If 89 is last two #'s on the wires, yours are original as they where made in 1989. Yup, that old...lol...I removed a set of 88's on a boat last year....amazing...

Your engine should fall in this serial # range in link below. If so, click on 'Distributor and Ignition components' for the ignition wire part #.

https://www.mercruiserparts.com/454-...8-1988-1992-0b

https://rover.ebay.com/rover/0/0/0?m...2F163781515594
So these should work? Says it doesn’t work with 454 hi performance, that’s not referring to the mag, is it??

BUP 08-03-2019 03:33 PM

merc wires are made in mexico - bean counter made

Your ebay wires are the china ones good luck with those. Maybe a total of 3 USA dollars went into building those ebay wires, my guess is 2 bucks went into those build set of wires. And Im sure the emi and rfi is thru the roof.

For a small jist of info - Marine engines have wire harnesses all over the place thats why one of the reasons spark plug wires need to be of top quality including the boots. Also no air ever hits the engine compartments especially after shut down then heat soak takes place.

Tractionless 08-04-2019 11:18 AM

I ordered and built the plug end of Moroso 8.8mm's for a big block and hadn't had an issue with them in several years. Boat year round.

BUP 08-04-2019 12:11 PM


Originally Posted by Tractionless (Post 4700250)
I ordered and built the plug end of Moroso 8.8mm's for a big block and hadn't had an issue with them in several years. Boat year round.

BINGO and ask me how I know.

Prestigeworldwideee 08-04-2019 07:02 PM


Originally Posted by BUP (Post 4700171)
merc wires are made in mexico - bean counter made

Your ebay wires are the china ones good luck with those. Maybe a total of 3 USA dollars went into building those ebay wires, my guess is 2 bucks went into those build set of wires. And Im sure the emi and rfi is thru the roof.

For a small jist of info - Marine engines have wire harnesses all over the place thats why one of the reasons spark plug wires need to be of top quality including the boots. Also no air ever hits the engine compartments especially after shut down then heat soak takes place.

would these work then? ACDELCO Spark Plug Wire Set Delcore II Electronic Suppression 7mm 3Q01 8 Wires

MinimalisticExpectations 08-04-2019 08:33 PM


Originally Posted by Prestigeworldwideee (Post 4700292)


would these work then? ACDELCO Spark Plug Wire Set Delcore II Electronic Suppression 7mm 3Q01 8 Wires

In short, yes. But I'd also second the msd or moroso 8.8 mil wire and making up your own terninations. Take the time to do it right once and you'll probably be in a retirement home sipping oatmeal through a straw by the time the wires need to get swapped out again.

SB 08-05-2019 08:33 AM


Originally Posted by SB (Post 4700152)
The last two#'s stamped on the ignition wires from Mercruiser are the year the wires are made. Nice feature so we know how old they are. If 89 is last two #'s on the wires, yours are original as they where made in 1989. Yup, that old...lol...I removed a set of 88's on a boat last year....amazing...

Your engine should fall in this serial # range in link below. If so, click on 'Distributor and Ignition components' for the ignition wire part #.

https://www.mercruiserparts.com/454-...8-1988-1992-0b


Originally Posted by Prestigeworldwideee (Post 4700169)

https://rover.ebay.com/rover/0/0/0?m...2F163781515594
So these should work? Says it doesn’t work with 454 hi performance, that’s not referring to the mag, is it??

Did I say that ? No. Jeesh.

Mercruiser wire sets are very good. I use them alot on boats I work on.. I gave you a way to look up the OEM part # and then go shop from there.
I've gotten some closer to $50.00 .

I would never suggest some unknown part shipped directly from Bejing. LOL.

rspillman88 08-07-2019 09:07 AM

I run msd

ThisIsLivin 08-26-2019 02:05 PM

+1 on the MSD 10 years and still look new.


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