Ditto on the Heat exchanger leak that's the bad news. The good news is that you are going to have to replace them with larger ones anyway as unless they were way too large for the half system they will not be close to large enough to cool the massive amount of new iron that is involved with a full system. If you are going to do this project, and I highly suggest that you do, you may as well do it right and start with new manifolds otherwise any rust that has accumulated will slough off and get into the whole engine cooling system you are creating. I made the conversion to a "full" system last year as with twin 454's I got tired of changing the manifolds every 5 years or so. I'm not getting any younger and it is such a bitch to do. I replaced the manifolds/risers/elbows gaskets/installed the necessary block-off plates and added the larger exchangers. Kind of a pricey project but I did all the labor myself(argh!!!) So I only paid for parts and one visit to the emergency room :) I belive the company that designed my new exchangers was called SeaKemp. I'll check on it and get back to you.
Oh and by the way the reason I started down this path was because I was having a 'mysterious' loss of coolant that was traced to a leak in my heat exchangers and that leak exiting in the raw h2o exhaust. Sound famaliar? When I contacted SeaKemp for replacements I told them that I was converting to a full system and they said that without question I would have to upsize the current exchangers as the heat exchanger is part of the design of the cooling system for the boat as it was launched. Kirk On Feb 10, 11:03 am, gene <[email protected]> wrote: > John Miller: > > I agree with Steve. If you keep having to add antifreeze, you have a > leak. It could be in the heat exchanger (the 7-14 pounds of pressure > forces the antifreeze into the raw water through the copper cooling > tubes and then out through the exhaust), at the block-off between the > exhaust manifold and elbow or within the block into the cylinders or > oil pan. I'll bet every once in a while you get the "sweet" odor of > antifreeze when you start the engine. > > Gene -- You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/unifliteworld?hl=en.
