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gigem75 
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Joined: November-12-2005 Location: United States Status: Offline Points: 239 |
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 Posted: May-13-2008 at 7:01pm |
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just got the news from the machine shop, one cracked head and will need to go 30 over. He's done several marine apps and says he can get the main seals. Ordered them today from skidim but the rear main is on backorder but they seemed pretty sure it would be to them in a couple of days.
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Quigs85SN2001
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Joined: September-30-2006 Location: Davisburg, MI Status: Offline Points: 67 |
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Posted: May-14-2008 at 8:33pm |
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Brian,
I finally got word from the machinist this morning that .030 over will work. I'd like to buy your pistons, if they're still available. Let me know how you would like to proceed. My home email is margaret48350@comcast.net |
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Brian
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gigem75
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Posted: May-16-2008 at 12:43pm |
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my machine shop person/tech/mechanic/machinist/guru told me .030 was the min that a 351 would be bored. That sound right?
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JoeinNY
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Joined: October-19-2005 Location: United States Status: Offline Points: 5698 |
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Posted: May-16-2008 at 1:22pm |
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No, .020 over pistions are available and 351w blocks are bored .020 over all the time. He may mean that your block needs to go .030 to get past some cylinder issues, he maybe pushing parts he has on the shelf, or he might just be a dumbass...
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nuttyskier2002
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Joined: September-28-2005 Location: United States Status: Offline Points: 669 |
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Posted: May-17-2008 at 5:43am |
Brian, I sent you an e-mail to your comcast address. I still have the pistons. Brian |
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95 Malibu Echelon w/Mercruiser 350 Magnum Skier
Former boats: 88 Ski Centurion Tru Trac II 59 Chris Craft Capri (woody) |
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nuttyskier2002
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Posted: May-17-2008 at 6:06am |
Gig, I agree with Joe. Sometimes the block just won't clean up to .020. Remember that is the total overbore. The cutter on the boring bar is actually only cutting into the cylinder .010" to get that (even less....you have to save some metal to hone). So for a block to be able to clean to .020 the ridge (where the piston ring tops out) can only be a maximum of about .007 to .008". I've seen blocks with well over 100K miles and only have a .002" ridge. Then I've blocks with less than 90K and have over .010". Just depends on how well is was maintained and how much it was abused. |
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95 Malibu Echelon w/Mercruiser 350 Magnum Skier
Former boats: 88 Ski Centurion Tru Trac II 59 Chris Craft Capri (woody) |
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Quigs85SN2001
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Joined: September-30-2006 Location: Davisburg, MI Status: Offline Points: 67 |
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Posted: May-27-2008 at 8:04pm |
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Brian A,
I took those pistons to the machinist this morning. He thought the one piston should clean up alright. Thanks for your help! |
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Brian
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nuttyskier2002
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Posted: May-28-2008 at 3:08pm |
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Brian Q.
Very good! Glad that someone could use them. What cam are you going to be using? Just curious. |
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95 Malibu Echelon w/Mercruiser 350 Magnum Skier
Former boats: 88 Ski Centurion Tru Trac II 59 Chris Craft Capri (woody) |
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Quigs85SN2001
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Joined: September-30-2006 Location: Davisburg, MI Status: Offline Points: 67 |
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Posted: May-28-2008 at 5:22pm |
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Brian A,
I haven't gotten that far yet, any suggestions? The machine shop said to put the old one back in, it looks fine. If I'm going to all this trouble, I think I want something a little hotter than the stock cam. |
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Brian
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21192 |
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Posted: May-28-2008 at 5:54pm |
Call Cam Research- all they do is Fords, and they know ski boats. Be sure to tell them that you have a reverse rotation engine. Also have your head, intake, CR info, etc handy, as theyll want that to make a good recommendation. http://camresearchcorp.com/ |
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gigem75
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Posted: May-29-2008 at 9:28pm |
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Great information, thanks!
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Quigs85SN2001
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Joined: September-30-2006 Location: Davisburg, MI Status: Offline Points: 67 |
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Posted: May-31-2008 at 11:23am |
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Call Cam Research- all they do is Fords, and they know ski boats. Be sure to tell them that you have a reverse rotation engine. Also have your head, intake, CR info, etc handy, as theyll want that to make a good recommendation.
Thanks for the information! I found a local guy who can grind me a RR cam, but Cam Research is about $100 cheaper. It looks like a few guys on CCFan have used Cam Research. So, between a better price, and a good track record, I think I'll go with Cam Research. I know a few guys have expressed interest in reverse rotation roller cams. The local guy I found can grind them, but they'll set you back about $700! Just thought I'd mention it in case anyone is still looking for one. |
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Brian
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eric lavine
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Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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Posted: May-31-2008 at 11:48am |
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probably keeps them really busy, Tr that was for you
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"the things you own will start to own you"
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eric lavine
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Posted: May-31-2008 at 11:49am |
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Did anyone ever check out Deltacams.com?
just curious |
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"the things you own will start to own you"
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nuttyskier2002
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Posted: May-31-2008 at 4:08pm |
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Brian, please post on here what grind numbers Cam Research recommends. You are using GT40P heads right? Are you having the block decked any? If using a .038 to .040" head gasket you'll want your pistons to be "in the hole" @ .005". That will give you an almost perfect quench distance of .045".
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95 Malibu Echelon w/Mercruiser 350 Magnum Skier
Former boats: 88 Ski Centurion Tru Trac II 59 Chris Craft Capri (woody) |
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Quigs85SN2001 wrote: