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  1. R

    Low hours 470 Engine ?

    Hi all, I have a Draco 1800 fitted with a 1978 470 motor of unknown history and hours. I've fitted the later alloy exhaust manifold, new elbow, Pertronix ignition, alternator upgrade, new sierra starter, and rebuilt the carb and 4 inch HE she has never given me much trouble aside from an...
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    MC1 - Cant select Reverse.

    Hi all, Still having issues with reverse a year on and wanted to recap and sanity check what can be done to determine if its the shift cable adjustment, shift cable wear or if I have a lower unit problem. So to recap, We have an MC1 Sterndrive coupled with a 470 motor. Forward selection is...
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    Pre alpha - Cant get reverse no matter what I do.

    Help required in a last stitch attempt to fix this boat please. So, recently it becomes hard to get reverse. Symptoms are as follows - Shifting from forward to Neutral - remains in gear till I pull the control a little into reverse past the notch then it shifts to neutral and I notch it again...
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    Pre Alpha Forward / Reverse / Neutral Issue

    Hi All, I seem to be having a problem with F/N/R on my pre alpha 1977 MC-1 style drive - the one with the pre load pin. I think the cables have stretched as when I try to go back to N from F, I have to go into R an inch or so to get it into N. Sometimes it does not engage in reverse until the...
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    470 Overheat or Wild Goose Chase ?

    Dear all, I have been chasing an overheat on my 1977 470 for two years now and I might have been on a wild goose chase all the while. Boat - Draco 1800ST 5.6M LOA Drive 1:84 Pre Alpha Engine 1977 Merc 470 with Aluminium Manifold Kit / Riser / Thunderbolt ignition / Alternator / 4 inch Heat...
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    1977 MC-1 Single Impeller Blade Pointing Worng Way ?

    Dear forum, I have on ald dog of a drive that is giving me some greif. It over heated last trip out so I inspected the water pump only to find a single blade pointing the opposite direction to all the others. Replaced with a top half kit and impeller and the other day I ran her dry by...
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    Pre Alpha Leaking Oil from Water Pickups

    Hi All, My drive is driving me mad. I see oil stains south of the water pickups on the drive now. I realize this must be seals but which ones and how to replace ? I changed the impeller again due to overheat and found oil in the water pump housing too. One of the impeller vanes was facing...
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    Exhaust Gasses emerging from rear of Prop

    Re: Exhaust Gasses emerging from rear of Prop Image should now be attached. Thanks, the bucket was massive but had a leak and I missed it. Must have sucked air in as there was no water coming from the outlets so its got to be an impeller. The crack on the other hand....
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    Exhaust Gasses emerging from rear of Prop

    Hi All. Whilst the MC-1 was in the bucket the other day I noticed the bubbles of exhaust gas coming from a 1 inch crack on the top of the OD casing just behind the rear edge of the prop. Is this a problem of major proportions or can it be left ? Any help useful here. She is overheating again...
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    MC-1 Lower Unit - Advice needed - found filler and small leak.

    OK guys, this is gonna be painful I am guessing. I was rubbing down my outdrive in order to paint her up and noticed a tiny weep of oil on the lower unit just behind the pickups towards the transom. A little further rubbing revealed a blob of white filler / epoxy / ??? something apparently...
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    Will this Trim Pump Work with MR1 ?

    Hi all, on the hunt for a pump and came accross this - http://www.ctboatrepair.com/parts/mtp/1.JPG Its off a mercury outboard....am I being silly ?
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    470 timing advance direction ?

    Hi all, had an issue on the water with hard starting in neutral and wanted to check timing. I had no light but rotated the distributor anticlockwise about 5 degrees and she is more responsive and idles better. Is anti clockwise rotation of the dizzy advance or retard please ? Does winding the...
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    Trim Pump Suitability - Pre alpha MC-1 - 1 hr to decide !

    Hi all, got a chance of a bargain pump as mine takes too long to trim. Existing is 1977 Prestolite on an MC-1 Merc 470 Its the type with the plastic reservoir and the existing is the prestolite. Will this fit / work ? I have 1 hr to get it ! Many thanks in advance. Ron.
  14. R

    470 Now running - quick video

    Hi all, after overheating issues I found a 3/4 pipe where a 5/8 should have been on the transom water pickup. Replaced and tested in bucket prior to water test. took a video and wanted your opinions as to whether it all looks good ? Many thanks Ron.
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    Happiness to Dismay - 470 overheating. UPDATE - FIXED !

    Hi guys, I thought I'd start a new thread dedicated to the cause. After finally getting my 470 on the water, she overheated. Hit 225 after 20 mins or less. I cut the engine, let her cool and headed to shore - did not blister paint or get too hot. The exhaust manifold and riser has been...
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    Should the Alpha 1 have 2 trim pump solenoids ?

    Looking at my A1. The pump has only 1 solenoid visible. Should there be 2 ? My leg takes ages to come up - 45 seconds, and recently only partially comes up again and was wondering why. Thanks Ron.
  17. R

    Finally On the water - 1977 470 Lives - Video

    Well all, thanks to the forum and all the help she got wet for the first time in 6 months. All went well until the high temp alarm sounded and we had to let her cool down. I think I need another impeller in the leg. Never the less a very happy moment - thank you.
  18. R

    My Merc 470 Lives Again

    Hi All, Could you kindly have a look and tell me what you think ? Sound ok ? kicking out enough water ? many thanks Ron
  19. R

    Some 470 Trim and electrical questions.

    Well things are developing.... New Ex. Mani / Riser, 4 In HE kit and still not had her out :( 2K later I might have a sea worthy boat. Other than that I need a trim gauge and am confused about the wiring. Can someone explain how the trim gauge sender and limit switch work please ? Here is...
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    Specifications of 470 4" Heat exchanger

    Hi all, I am tryiong another angle on this. Can anyone advise of the pecs of this unit ? flow rates, volumes, temps, pressures etc so I can have one made ? Many thanks Ron.
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