Timing is retarded ;-)

gsbarry

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I installed a new ignition module today and tested it on the timing light. I got identical results as before. I’m kind of stumped as to why it’s not advancing as much as it should.
 

Mc Tool

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See post #4 :). After seeing motors ( mostly motorbikes and quads ) with cam timing (up to 8 deg )and ignition ( about the same ) off spec from brand new it dont seem so bad ...Have they changed the spec ,? is there a service bulletin or manual update ?.... Does the motor go OK ? if so either get it dyno'd ($$$$$) to see if it needs any more advance (peace of mind )
or find something else to worry about :)
 
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jimmbo

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I installed a new ignition module today and tested it on the timing light. I got identical results as before. I’m kind of stumped as to why it’s not advancing as much as it should.
Was it a Genuine Mercury Part, or a 3rd Party(including GM) Part?
 

gsbarry

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Was it a Genuine Mercury Part, or a 3rd Party(including GM) Part?
I’m returning the part, and may try another. I believe the seller was running a bait and switch. Advertised as Quicksilver, but what I received came in an AC Delco box with a Quicksilver label slapped on it. Am I wrong or are these not different parts?
 

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Scott06

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I’m returning the part, and may try another. I believe the seller was running a bait and switch. Advertised as Quicksilver, but what I received came in an AC Delco box with a Quicksilver label slapped on it. Am I wrong or are these not different parts?
would not be surprised if the OEM part is a AC Delco made but would also think it that it would not be boxed that way...

You do see on here folks having good results with AC Delco modules, also do see a fair amount of issues with weird stuff goin on with EST modules not going into base mode, not coming out of base, and also not advancing.

Either way resolve the props stuff first and ignore the timing stuff for the moment
 

Mc Tool

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At the risk of sounding like a broken record
Mercury dont make ecu's any more than they make spark plugs or bearings . A LOT of the spares branded as oem parts are out sourced from all over the place
One could argue the seeing as how the motor itself is out sourced even genuine mercruiser parts are aftermarket .
All you guys thinking that by paying double for genuine parts from a dealer your getting a better quality part are in La La land. Look sideways and you'll get a lot of parts for 1/2 price .
 

alldodge

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At the risk of sounding like a broken record
Mercury dont make ecu's any more than they make spark plugs or bearings
. A LOT of the spares branded as oem parts are out sourced from all over the place
One could argue the seeing as how the motor itself is out sourced even genuine mercruiser parts are aftermarket .
All you guys thinking that by paying double for genuine parts from a dealer your getting a better quality part are in La La land. Look sideways and you'll get a lot of parts for 1/2 price .
Agree
Will add, I have no problem with AC Delco because they are the OEM. That said, I bought a "brand new" AC Delco gas tank evaporator switch from Rock Auto, and it was bad. Took care to dealer thinking I was missing something, and they replaced the same part and it's fixed
 

jimmbo

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I have no Problem using a GM labeled part, provided it is the Correct Part. I have seen many 3rd Party Parts that while the part was a GM Part, and it looked Identical, it wasn't the Correct Part. Years ago it was the same when it came to Carbs and Distributors, some people's Attitude, "it looks the same and it fits, and they are all the same"
As for the OP, I don't know what Part # he requires, or where he got that Part # from, so now I wonder if he is ordering the correct Module. He hasn't listed the Model #/Serial# of the Motor, so I can't be 100% certain of being on the correct Parts List
 

Mc Tool

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To be fair some pirate parts were pretty crappy but things have got a lot better .
 

gsbarry

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I have no Problem using a GM labeled part, provided it is the Correct Part. I have seen many 3rd Party Parts that while the part was a GM Part, and it looked Identical, it wasn't the Correct Part. Years ago it was the same when it came to Carbs and Distributors, some people's Attitude, "it looks the same and it fits, and they are all the same"
As for the OP, I don't know what Part # he requires, or where he got that Part # from, so now I wonder if he is ordering the correct Module. He hasn't listed the Model #/Serial# of the Motor, so I can't be 100% certain of being on the correct Parts List
P/N 811637001 from the Merc catalog.

1739929910637.png
 

gsbarry

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That # has been discontinued and superseded to 77-8M6008208
Thanks Jim. How does one identify when a p/n has been superseded? Should I just assume that is the case whenever there is the little + icon in the catalog?
 

gsbarry

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Thanks Jim. How does one identify when a p/n has been superseded? Should I just assume that is the case whenever there is the little + icon in the catalog?
Also, is there a way to identify when a part has actually been revised/redesigned rather than just changing the p/n on the same old part?
 

jimmbo

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Thanks Jim. How does one identify when a p/n has been superseded? Should I just assume that is the case whenever there is the little + icon in the catalog?
Latest Parts Lists usually show the updates
 
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