TOPIC: which merc is it?

which merc is it? 14 years 2 months ago #15884

retro54
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Got a question... which 4 cylinder mercury from 1958 to 1964 had the following badging on the lower unit

"Powered by the famous Thunderbolt Engine"

and

"Dyna-Float" cast into the lower unit shock-absorber.

I am looking at some pictures in an edvertisment, but they do not show the front of the cowl. the motor is painted black, but I believe this to be the typical black re-paint..

any information and ideas are most welcome. Thank you.

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Re:which merc is it? 14 years 2 months ago #15887

Matt Offline Gold Boarder Posts: 586 Karma: 3 Thank you received: 0	i have a '66 650 and I too am trying to get an idea what the face plate on this looks like....just picked up a set of decals. try : www.nymarine.ca maybe by looking at what he has to offer might point you in th right direction. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
	Please Log in or Create an account to join the conversation. Matt in Illinois I ain't here for a long time, I'm here for a good time !

Re:which merc is it? 14 years 2 months ago #15889

retro54 Topic Author Offline Senior Boarder Posts: 222 Karma: 6 Thank you received: 0	Thanks matt! it looks just like the MERC 300 he has all painted up... I'm thinkning it might be worth while picking up! Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
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Re:which merc is it? 14 years 2 months ago #15894

john-gibson Offline Contributing Member Posts: 4014 Karma: 324 Thank you received: 0	retro,how is your restoration coming along,i havent seen it posted,i want to follow it as you go,john,p.s.,hows your dads boat too. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
	Please Log in or Create an account to join the conversation. \"too soon old,too late smart\" my pap Twenty years from now you will be more disappointed by the things that you didn’t do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.“ ---Mark Twain

Re:which merc is it? 14 years 2 months ago #15937

dave bernard Offline Platinum Boarder Posts: 1471 Karma: 95 Thank you received: 30	look on the id plate for the model and serial ## Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
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Re:which merc is it? 14 years 2 months ago #15944

Chinewalker
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The Thunderbolt was the 40-cubic inch powerhead, which came in 35 and 40 horsepower flavors, and was known successively as the Mark 55, Mark 35A, and Merc 300. The Mark 55 would have the turtle-top top cowling (rounded). The Mark 35A and Merc 300 would have the squared top cowling.

Not to be confused with the Super Thunderbolt 45-cubic inch powerhead, which powered the 45 and 50hp models...