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1983 Nautique 2001 with mercruiser 454 |
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sun 
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Joined: October-10-2013 Location: zar Status: Offline Points: 4 |
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 Topic: 1983 Nautique 2001 with mercruiser 454Posted: October-10-2013 at 9:01pm |
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I have a 1983 Nautique with a 454 mercruiser, mechanic has redone crank, he then installed new lifters with old cam, cam then lost a lobe.
I am based in South Africa, and have been struggling with the local mercruiser agents, they not helpfull at all, dont even know their own serial no's. Any suggestion where I can get a good quality cam, with new followers, no Kong Fong products. Also any one sure of mark iv/v/vi series this motor is? engine no:22642 block casting 14015445 gmt14 any help would be much appreciated, my 1st Nautique, and would like to restore it to new. |
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89Martinique
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Joined: September-05-2011 Location: Binghamton Status: Offline Points: 457 |
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Posted: October-11-2013 at 12:46am |
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many good cams, I prefer edelbrock and Crane most. Others also like Comp cams. They are all US made. They are most likely the same cam, Edelbrock is the same as summit cams as there is only 3 cam grinders in the US.
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Current Boats:
1992 Supra Comp-TS6M PCM 351w HO Pro Boss Pro-Tec Ignition - Full Composite (no wood stingers!) 1989 (3rd Gen) Correct Craft Martinique B/R PCM 351w Power Plus 1984 E-Scow Keuka Lake, |
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hotboat
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Joined: March-28-2009 Location: Conn Lake Pa Status: Offline Points: 814 |
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Posted: October-11-2013 at 11:17am |
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Is that standard or reverse rotation?
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Brian
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21171 |
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Posted: October-11-2013 at 11:40am |
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That Merc 454 is either non-original (most likely) or a very oddball factory engine (pretty unlikely). The 14015445 casting number indicates that its a Mark IV.
We need to know whether RH or LH. What prop does the boat have, and was it known to move under its own power with it? If thats an unknown, then pull the timing cover off and snap a pic of the timing set. |
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phatsat67
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Posted: October-11-2013 at 11:48am |
+1 |
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ArtCozier
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Joined: April-25-2012 Location: Orlando FL Status: Offline Points: 1023 |
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Posted: October-13-2013 at 10:29pm |
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Tim, I'm not 100% sure of this on big blocks, but most of the GM engines use the same cam LH or RH. They just reverse the rotation direction of the cam by using gears to drive it off the crank instead of using a chain.
Art |
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"Art"
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oldcuda
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Posted: October-13-2013 at 11:10pm |
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Only thing they have in common is they spin in the same direction.It is a reverse fire and ground totally different.If you put them side by side the lobes are in different positions and the front of cam is different to take the timing gear.
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ArtCozier
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Posted: October-13-2013 at 11:31pm |
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Well, now I know more than I thought I did before! That's what I get for "ass-uming!
Art |
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"Art"
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sun
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Posted: October-14-2013 at 6:51am |
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sun
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Posted: October-14-2013 at 6:52am |
Any info on a cam supplier? |
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baitkiller
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Posted: October-14-2013 at 9:29am |
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This may help. The part numbers you need are post scripted RH. Crusader parts may be easier to source than merc for you.
http://www.jerrysmarine.com/cgi-local/show_page.cgi?page=42&reset=757 |
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Jesus was a bare-footer.............
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ArtCozier
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Posted: October-14-2013 at 11:07am |
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Since PCM bought out Crusader, they have a good many of the older Crusader parts. You might try www.SkiDim.com and send them an email with the Crusader part # and a description of the cam. (RH 454 and any numbers you can find)
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TRBenj wrote: