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    Help finding the part number

    I am installing a new outdrive (DP-SM 1.95 P/N 3868913). Unfortunately, the old one was removed by a VP tech, so, I did not see how the grounding cables were connected. I am seeing a loose grounding wire connected to the pivot housing. VP shop manual has no mentioning of this wire. I am also not...
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    New DP-M outdrive install: need advice

    So, I need to replace the outdrive on my boat. I managed to buy a new VP DP-M 1.95 outdrive from an out-of-state dealer who secured a batch of the outdrives while VP announced that they were halting the production. Now my local VP dealer is refusing to install it (while being unable to get one...
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    DP 1.95 SM outdrive hosed

    So, I just got a "Christmas present" from my marina who told me that I will need a new outdrive ($10K+ with labor costs). The outdrive is a dual prop SM model 1.95 gear ratio (just in case it matters). The outdrive was serviced 4 years ago. At the time the water was found in gear oil as a...
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    Help with interpreting AFR gauge readings

    So, I've been trying to tune my new Holley 4160 (600 cfm marine carburetor model 80551) on 5.7 block. Had to increase main jets from #63 to #71 and switch to black (strongest) vacuum secondaries spring. Still have hesitation around 3500 rpm before the surge at WOT (as secondaries open). I don't...
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    Spark plugs for 1997 5.7GI

    I have a 1997 5.7 GIPLKDCE that had the block replaced and switched to a carburetor. So I am trying to understand my options for spark plugs. According to VP, the original engine needs 3851861, which I cross-referenced to Champion RV15YC4, and this is what VP mechanic installed few years back...
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    Tuning Holley 80551 (4160)

    Hello everyone. So, I just got myself a new Holley 80551 (600cfm, 4-barrel, vacuum secondaries) carb for my 5.7 engine. After initial tuning the boat runs great in low rpm range, starts right up. WOT is very good too. The engine bogs down in the mid range. After reaching about 2500rpm RPMs stop...
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    VP vs GM balancer

    Hello everyone, I've been struggling with my new Jebsco crank-mounted sea water pump wobbling (see my old thread "Crank-driver raw water pump upgrade" if curious). Recently, I've replaced the steering pump pulley that was also wobbly. That allowed me to trace better the source of wobble on the...
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    Edelbrock 1409 woes

    Hello everyone. So, I have a 1997 Pursuit that originally had 5.7GIPLKDCE. At some point the previous owner killed the engine and the block was replaced. For whatever reason they decided to replace the original fuel injection setup with a carburetor. When I bought the boat, the carb (I think it...
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    1997 5.7 Gi fuel system

    Hello everyone. Can somebody explain (or point me to the appropriate information source) how the fuel injection system works on the 5.7 Gi engines? I have 1997 Pursuit 2460 that had the original engine replaced by previous owner. The original engine was 5.7GIPLKDCE, i.e. fuel injected. The...
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    Crank-driver raw water pump upgrade

    So, I upgraded my pre-1997 VP belt-driven raw water pump to a high volume Jabsco crank-driven pump. Happy with the performance, maintenance is much easier - great upgrade. However, I am getting this vibration from the pump, see the video: https://photos.app.goo.gl/uRqy9tPf3ejCde4z7 I am guessing...
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    Raw water pumps

    So, I've been having problems with my exhaust elbows overheating (I have another thread going on this). Long (very long) series of tests led me to questioning the raw water pump. From what I hear, the pump should be producing 24G/min @3000 rpm in-situ. If I bypass EVERYTHING, i.e. 1-1/4" ID hose...
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    Things to do after engine sucked in water

    Can somebody point me to a list of recommended procedures after water intrusion into the engine cylinders? So, I had a slight cylinder head overheat due to brief water flow restriction to risers during cooling system testing. Nothing substantial, engine temperature gauge barely moved above 160...
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    Riser (elbow) temperature

    What is riser (exhaust elbow) normal temperature at WOT for fresh water cooled 5.7 V8? I've installed temperature sensors in both of my risers after having problems with overheating (the problem was air leak in the outboard water intake line, now fixed). I verified temperature readings with a...
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    surging

    I have a frankenstein 5.7 gi carbureted (Edelbrock 1409) replacement engine in my Pursuit. The carburetor was replaced last year. I am getting a small surging at low rpm. The idle is set around 600 but it jumps around 30-50 rpm. Gets particularly noticeable when cold leading to engine dying...
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    squeaking noise

    what could be making a squeaking noise with all belts removed? I've been trying to locate the source of a squeaking noise coming from the front of the engine (where all the belts are). The engine is a replacement engine, so, cannot track the exact model, but the original engine was 5.7GIPLKDCE...
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    Setting initial timing

    Hello everyone, I am having a weird problem while setting base timing on my 5.7 penta (the engine is a Frankenstein replacement engine, so, I cannot even tell the actual model number). The distributor is a Delco-style aftermarket replacement. As I understand it, I should see timing advancing 9...
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