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    5.0l vs 5.7l

    Is there a mark able difference in torque and performance between a 1987 305 (230) and a 350 both carb'ed ? I just got gifted a 1995 350 . F786416 . the block and one head are done.
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    How to test for spark without cranking engine ?

    I tested the ignition and rebuilt the carb. She sounds good at 2000 rpm.
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    How to test for spark without cranking engine ?

    Haha.....
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    How to test for spark without cranking engine ?

    Is it possible to test my Thunderbolt IV without cranking engine? I went to start the engine and found my carb leaking. But had no fuel on plugs . I will rebuild the carb , but i think I should check my ignition also. I can't just crank the engine because of my new flat tappet cam. So I am at a...
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    Break in fresh built mercruiser 230 out of boat

    Great thanks!!
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    Break in fresh built mercruiser 230 out of boat

    Quick question , The brown white wire from the terminal block for the trim sender should be connected to a 12v positive circuit? I am thinking the engine will not start if it does not see a voltage there. I have my test stand ready for the wiring .
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    Break in fresh built mercruiser 230 out of boat

    I understand roller cams don't need to be broken in but my machine shop gave me instructions on flat tappet cam break in. If you don't break in a flat tappet properly you can loose the lobes because the lifters don't rotate properly. I agree that seating the rings is best done under load , but...
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    Break in fresh built mercruiser 230 out of boat

    Thanks Scott ,
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    Break in fresh built mercruiser 230 out of boat

    Since I don't have my out drive yet, I was thinking to break in my flat tappet cam on land. I have built an engine test stand. Just going to order some electrical gauges . The carb was rebuilt also , so I am not sure what to set the idle mixture screws at. I know I have to run the engine at 2000...
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    Removing Upper Steering Pin Bushing

    I used a small blade screwdriver . I put the edge on the bushing and tapped with a hammer . Then put the blade between the housing and bushing and twisted. Took a bit....but got the bushing out.
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    Paint on head exhaust ports

    just want to ask if the majority removes the paint on the head exhaust ports before they bolt the manifolds on with a gasket? The shop that did my heads painted them , along with the head. Not the intake side. These are v8 305 heads. Thanks, Carl
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    Alpha one Gen II upper steering bushing

    Thanks Guys, I drilled and put a grease zerk in. Now can I use moly grease since it is a friction bushing? Or is the marine grease specially formulated?
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    Alpha one Gen II upper steering bushing

    I am rebuilding my gimbal assembly and have a question. When I took the upper steering pivot apart , there was no grease in the top bushing housing. Should I pack this area with grease when rebuilt with new bushing? There is no grease zerk like the Gen 1 . My serial number is 0D753918 . Carl
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    SEI outdrive question

    My gimbal is a Gen II 0D753918 . Yes I truly bought a project boat :).
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    SEI outdrive question

    Thanks, motor serial was b409807 1986 The loss of a few knots at top end is not a deal breaker for me. So I will play with Mercruisers prop calculator when time comes . Carl
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    SEI outdrive question

    Thanks all, Ok like I figured , my hp rating is off. The motor stock was 230hp So 1.62 or 1.84 for a drive. With proper size and pitch of propeller . A 4 blade would get me better pull at low speed? ie, hole shot? What rpm do most see when pulling water sports ?
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    SEI outdrive question

    When I rebuilt the engine I put flat top pistons and a new cam. The cam is a marine mild cam close to stock. I kept the build close to stock but my hp guessing is probably off. Class I camshaft. Good idle quality. Low rpm torque and mid range performance. Will work with stock or slightly...
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    SEI outdrive question

    Thanks , What is the breakdown of the gearing? 1.62 = 1 motor rev to 62 prop rev? My boat weight is 2600lbs , not sure if dry or wet. I was hoping to use the boat for water sports , tubing , wake boarding etc. My young lads will using it more than me so handling would be important. My...
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    SEI outdrive question

    Hi All, I am pondering between purchasing a new SEI 116 drive or a rebuilt Mercruiser drive. The 2 will cost the same roughly . My question is are the SEI drives good with a 230hp 5.0l engine? I am looking at 1.47 ratio. My gimbal housing is alpha 1 gen 2. The dealer told me that it had a 1.81...
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    Advice on transom , stringers and floor rebuild

    Thanks !
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