Where’s my speed at?
02-20-2019 | 02:52 PM
#21
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From: Ft. Worth TX
1989 Mercruiser came out with the 365 hp 454 carb and it was rated at the crank 365 hp. 1990 year was at the crank measured hp
1991 was the year they -- Mercruiser posted propshaft hp.
1.50 was the listed gear ratio for the bravo in 1990 and in 89 and 91 for the 454 / combo. I do not recall a 1.65 during THOSE YEARS. But of course later on more ratios where intro. .
1991 was the year they -- Mercruiser posted propshaft hp.
1.50 was the listed gear ratio for the bravo in 1990 and in 89 and 91 for the 454 / combo. I do not recall a 1.65 during THOSE YEARS. But of course later on more ratios where intro. .
02-20-2019 | 07:16 PM
#22
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Joined: Nov 2003
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From: Antioch, IL
1989 Mercruiser came out with the 365 hp 454 carb and it was rated at the crank 365 hp. 1990 year was at the crank measured hp
1991 was the year they -- Mercruiser posted propshaft hp.
1.50 was the listed gear ratio for the bravo in 1990 and in 89 and 91 for the 454 / combo. I do not recall a 1.65 during THOSE YEARS. But of course later on more ratios where intro. .
1991 was the year they -- Mercruiser posted propshaft hp.
1.50 was the listed gear ratio for the bravo in 1990 and in 89 and 91 for the 454 / combo. I do not recall a 1.65 during THOSE YEARS. But of course later on more ratios where intro. .
05-28-2019 | 06:05 PM
#25
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yeah, my speedometer actually matches up to my GPS speed but I’ll stick to GPS so I know it’s right. So I changed the spark plugs out which I don’t think has EVER been done before.... so bad, so old. Got some new ones in, changed out the impeller and the water pump housing ended up cracking on me. So, won’t be able to test it out till possibly this weekend when I get the new housing. With the way the sparks look, I should be considerably faster with better acceleration. I’ll probably will replace the wires and cap as well... wires look like it wouldn’t hurt to change out.
05-28-2019 | 06:20 PM
#26
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From: On A Dirt Floor
If they are Mercruiser/Quicksilver wires, the last two #'s in the part # printed on each wire is the year they where made. 3 boats the other year had OE wires from the 80's lol. so yeh, never replaced. Amazing.
05-29-2019 | 08:28 AM
#28
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very good point, I’ll have to take a look at the carbs as well. The spark plug wires are Mercruiser suppression... can’t remember the part number.
06-08-2019 | 07:48 PM
#29
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Top end check in: ran the boat with the new spark plugs and saw a 7.4% increase in top speed! This boat just hasn’t been maintained the way it was suppose to be. The spark plug wires are original and made back in 1989! Gonna put new spark plug wires and a new distributor cap on. Top end speed aside, I’m sure this could use one for the sake of good maintenance. Ran 52.8mph last year and 56.7mph today and I might be able to even get a little more out of it since I don’t think the trim was fully down. I didn’t know at the time but I had bumped the power wire on the outdrive and it stopped working. I doubt I’ll be hitting 68mph but I might be able to hit low 60’s with the trim all the way down and new wires and a new cap.
