1994 mercury racing hp 465?
I am looking at a boat to purchase that has these motors. Im having a really hard time finding any decent info on these motors.
Were they any good? Reliable? Valve train issues like its succesor the hp500? Any help would be greatly appreciated. |
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i think the difference is the cam&lifters,im not sure but if memory serves me correctly the 465 had flat tappet cam &lifter setup.i have never worked on any and only seen a pair of them in one boat.
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Thanks Mike. I have found some info. Just not any real world experiences or reviews like on the other motors. The boat they are in is a formula 336. Its supposed to be 100% original with low hours. Im going to inspect it tonight and will know more after i get the HIN and make a call to formula.
First bits of info point to a mk IV 502 with a flat tappet cam and dual rise intake. Searching mercruiser parts through bam point to it being a gen V 502 block. Both variations are said to have 445 hp at the prop. Any other additions are welcomed. |
Might get lucky and find bowtie blocks.
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chuckbeecher here on OSO had a 32 Active Thunder with them way back in the day.
He always said they were great motors. |
Had one in my '94 Fever.
Hyd flat tappet cam that wasn't a stranger to reversion with the OEM GIL/Merc exhaust GM Dual plane high-rise intake with Holley 800 Other than those 2 items, same critter as the 500 which replaced the 465 in '95, at which point the cam and intake were changed. I 'think' the HP500 in '94 and previous, was actually the 540 Bulldog. |
This engine was started in 1990 thru 1992 and in 1992 (serial run) at some point was then the Gen V version thru 1994 . Mercruiser put out a SB to bump the idle up to help against water reversion. It helped somewhat but did not cure those problems completely. Back in the day we seen the 465 in Fountains quite a bit.
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Originally Posted by Fischan
(Post 4251804)
Thanks Mike. I have found some info. Just not any real world experiences or reviews like on the other motors. The boat they are in is a formula 336. Its supposed to be 100% original with low hours. Im going to inspect it tonight and will know more after i get the HIN and make a call to formula.
First bits of info point to a mk IV 502 with a flat tappet cam and dual rise intake. Searching mercruiser parts through bam point to it being a gen V 502 block. Both variations are said to have 445 hp at the prop. Any other additions are welcomed. |
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