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    Merc 470 Alloy Head Options ?

    Hi all. I have the opportunity to buy a head for a decent price. Will a 429 / 460 one work with minimal setup changes ? Spec as follows - Intake/Exhaust port volume: 275cc/100cc Combustion Chamber volume: 95cc Valve size: 2.19x1.75 Valve Springs: Single with dampner 125lbs closed...
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    Help - 470 Starting issues - Argghhh !!

    Hi Guys, Sorry to pester but I think I now have good reason to post this. 1977 470 serial 477XXX Story - Bought it - ran fine. Brought home - Ran fine Took to boat yard - starter shorted. Replaced starter - broke solenoid - replaced solenoid - no start. Got spark, but carb is throwing...
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    Rochester 2bbl question

    Hi all Rebuilding my card from a 1977 470 serial 477xxx and seem to have a few bits missing And wanted to know what effect this would have. On the choke the piston is missing along with the pin The accelerator had no ball bearing in it and now has one but no retainer fitted below the spring...
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    Have I killed my slave solenoid ? 470.

    hi all I was trying to diagnose an ignition issue where I only get 3 volts at the coil tonight and I took a live from the slave sol and put it to the resistance wire on the choke that feeds the coil. Click headed then no volts at coil and no click from solenoid when ignition it switched to run...
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    Advice on 470 Please.

    Hi forum, I just got me a Draco 1800 ST 1981 build with a 470 fitted as the powerhouse. The engine has had some mods - Alternator replaced with aftermarket No V. Reg in water anymore Stock Distributor New uprated Coil Allegedly rebuilt last year with new gimble bearings and bellows etc. She...
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    Mercruiser 140 / 470 -Identification required - please help

    Hi Forum, I just became the proud owner of a Draco 1800 ST Powered by a 3.0l Merc 140 - or so I was told.... The starter failed when trying to run the engine up the other day and I had to take it off to find that the pos post was shorting agains the armature as the bacolite insulator has...
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