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    Perko switch question (1 engine 2 battery)

    I I think my terminology is incorrect. When I said ring terminal I meant the large clamp terminal you see in the picture... Just like on a car or a truck battery my boat has a large clamp terminal on the battery post and that wire goes to the starter. So I'm trying to figure out what other...
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    Perko switch question (1 engine 2 battery)

    So I wanted to install a second battery with a perko switch. I purchased a second battery, battery tray, two new 24-in battery cables, One new 24-in ground cable, and the perco switch All three new cables have the 3/8 lug ends. Well I want to go install today and on my current installation...
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    4.3L IGNITION TIMING

    really? i was told differently, that the purple/white wire was grounded to an engine or battery ground to set the thunderbolt V module into base timing mode. this document also mentions that. Am i misunderstanding or misinterpreting something...
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    4.3L IGNITION TIMING

    this area circled in red is where my wire is and the purple wire circled in yellow was my purple timing wire with a rubber cap inside it. if you dont have that wire then you probably have thunderbolt IV in which case you dont have to put anything in base timing mode you just set your timing to...
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    4.3L IGNITION TIMING

    Yes from my understanding you take the purple wire or purple wire with a white stripe that's right there near the carburetor I think it has a black cap in. You ground that wire and then you set your base timing at idle. Once it is set then you take the ground out of the purple wire then use your...
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    Outdrive leaking oil

    when i had this issue, it turned out to be the input shaft seal assembly that sits under the water pump. Gear lube leaked out of the water intake holes on the outdrive. 807929A1
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    Engine is in, successful run?

    Finally got an engine cover that I was happy with.. I was really hoping that it would have the right spark plug spec on it for MR43LTS because it says 350 Magnum on it.. but unfortunately it still says MR43T. I wanted it to be as correct as possible so that if I decide to sell this boat in the...
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    Audio Warning system disable with Key on engine off for Radio?

    i bought the boat second hand so ill have to see why they changed it. Is this how boats from the 90s are from the factory? i know the boat had a factory CD player back in the day just not sure how it was wired. if it was wired the way it is now or if it was wired the way you all are suggesting...
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    Engine is in, successful run?

    I wasnt using a shop tachometer. We were just using an older analog snap on adjustable timing light and the tach on the dash. to be honest i'm pretty sure the tach on the dash was closer to 3200 rpms and given that those are most likely inaccurate it was probably really closer to 2800-3000 rpms...
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    Audio Warning system disable with Key on engine off for Radio?

    1996 sea ray 210 previous owner cut out the buzzer for the audio warning system. I found the cut wires under the dash and soldered in new bullet connector leads in the new quicksilver audio warning system kit i got. audio warning system works perfectly fine now, turn Key on 1st stop, warning...
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    Engine is in, successful run?

    interesting theory you have there sir. I highly highly doubt anyone went through the trouble of changing out gear ratios and leaving the original gear casing in tact with stickers. not with the backyard people i bought mine front. most likely its the tach reading being off thats throwing your...
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    Engine is in, successful run?

    What makes you doubt the results? Do you think Should speed be higher? Rpm be higher? Lower? i know I have a 1.62 as it says that on the actual outdrive and the outdrive serial also pulls up a 1.62 ratio. I Madea profile on sea ray website and plugged in my serial numbers and it says this ENG...
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    Engine is in, successful run?

    Yes yes lol you guys love looking for anything that's possibly not marine and pointing it out. I have many many other thread on here I made over the last 2 weeks and one of them was about wiring for fuel pump relay and oil pressure safety switch. I have oil pressure safety switch wired up with...
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    Engine is in, successful run?

    im currently running a 14x19p prop quicksilver stainless. noting fancy and definitely not perfect. if i'm running 4800 rpms with a 14x19p, what would going to a 14x21p stainless do, go up to 5000 rpms or go down to 4600 rpms?
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    Engine is in, successful run?

    thanks for the reply, here are the specs from summitt racing website' Brand: COMP Cams Manufacturer's Part Number: 08-416-8 Part Type: Camshafts Product Line: COMP Cams Xtreme Marine Camshafts Summit Racing Part Number: CCA-08-416-8 UPC: 036584038382 Cam Style: Hydraulic roller tappet Basic...
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    Engine is in, successful run?

    All right engine is in. Removed blown non vortec 350 and replaced with fresh full rebuild 350 5.7 vortec. We use the timing lights at the thunderbolt 5 ignition and base timing mode and set it to 10° initially and my engine builder said he felt comfortable with 13° BTC so that's what we set it...
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    Please help I am stumped ! Engine surging high rpm

    I'm not gonna repeat anything about is this or that marine rated, there's enough others that that do that. 1st get rid of that second fuel filter on the inlet of the Edelbrock micro pump. You don't need it you already have the fuel water separator.. extra fuel filter isn't helping. The...
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    Only 3psi on new electric fuel pump

    Mercruiser 5.7 carb. I had to replace the mechanical fuel pump with my new vortec build as I'm no longer using a camshaft that supports the mechanical fuel pump. So initially I purchased an Edelbrock electric fuel pump rated at 4-8psi... People told me oh you can't use that because it's not...
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    5.7 Mercuriser Cracked Block

    if i could go back and do it over again id get a crate setup and be done with it. i have a recent few threads where im recovering from a blown 5.7. I bought a truck engine from someone and they neglected to tell me it was cracked in 4 places from running water in the block. then i used the...
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    Top Speed Issues

    i filled up full 35 gallon tank (91 non ethanol marina gas) last year august 2020 when i blew engine. literally full lol. new engine is going in now but i was scared to use 1 year old gas so i pumped it all out and put it in my friends car lol. fuel still smelled good. I should have kept it ugh
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