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    1991 454XL's - What brand oil do you use?

    I've heard recommendations for Shell Rotella T 15W40 but that says for Diesel Engines on the label. I've also been told Valvoline VR1 for it's higher zinc content (older flat tappet engines like this). Curious what brand everyone uses?
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    454XL Oil Pressure Switch - Where is it?

    Where is the oil pressure switch on a 1992 454XL? The other day I was running around 3K rpm when the RPM's started to slowly drop and the engine died. I was able to restart it but it wouldn't rev past 1500 rpm under load until it would slowly climb up to around 3500 rpm at full throttle. I ran...
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    1992 Crusader 454XL carb replacement

    I'm pretty sure my 1992 454XL engines have Holley 4011 carbs, the stamping on the horn is R-84042. I just learned that these aren't even the marine version, they must have been replaced over the years because the correct carb number would be R-84024 or R-84026 They are pretty worn out...
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    White smoke / steam from exhaust

    So yesterday I decided to open up both 454XL's for a bit. WOT for Port engine was 4200, 3900 for Starboard. After 5 minutes of WOT my starboard engine starting throwing a lot of white steam/smoke out of the exhaust. I think I noticed a faint burnt rubber smell at first. The engine didn't...
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    454XL Impeller Replacement

    Thanks. Here's a pic of what I'm working with. The light grey brace at the top of the picture is the access hatch frame, there are only a few inches from there forward to the bulkhead with the fuel tank on the other side. The light grey brace on the right is also part of the access hatch frame...
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    454XL Impeller Replacement

    How in the world do you change the raw water impeller when you can't get behind it or to the side of it? I can't get to the outside of this starboard engine and the bulkhead is right in front of it. I can barely get a hand down there and touch the pulley on the seawater pump. Is it possible to...
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    Left Manifold Running Hot

    I'm going to check this entire coolant flow path and see if I can find a blockage anywhere. But one thing occurred to me when I was looking at this - how is the coolant circulated thru the block and heads as well? Is that flow thru the galleys provided by the exhaust manifolds? I haven't been...
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    Left Manifold Running Hot

    I have a couple of FWC Crusader 454's in a new-to-me 35 foot cruiser. The starboard engine left manifold is running hot (both the manifold and the riser with the manifold being the hottest) while the other side and both sides of the port engine are cool to warm to the touch. The volume of water...
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