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  1. J

    Aluminum Exhaust manifolds

    Didn't want to hi-jack the other thread. I built a SS riser exhaust system that mounts to the stock Merc center riser manifold. My next step is to get aluminum manifolds but they have to have the stock bolt pattern. I have seen the GLM and it has the right bolt pattern. I looked at the Barr and...
  2. J

    Question about Holley jets...

    I was going thru my loose holley jets and found a set of 61'H' and 67 'H'. In the holley book, I didn't find anything with an 'H' suffix or designation. Anybody know what it means or any specific purpose for those jets?
  3. J

    After-market digital tach installation???

    I just got a 2" digital tach for the boat.(Merc chev V8) I also installed the Delco (voyager)EST ignition system. My shop said some tachs require a filter with electronic ignition. Tach instructions says to get installation info from ignition system Mfg if using an aftermarket ignition system. I...
  4. J

    Cobra to volvo swap?

    I don't know much about the OMC and Volvo drives and this board has a lot of knowledge in that department. A friend has a '87-'89 Marlin with a 4 cylinder OMC cobra drive(with dog clutch). He hydro'd the engine and want to re-power with an 4.3 from another boat with a Volvo drive('92). I...
  5. J

    Evolution of home made SS exhaust system

    This is just the thru transom jacketed and muffled exhaust. It was too loud and got water reversion. These are the components of the second generation with SS riser to prevent water reversion. Didn't work. This is the finished failed version of SS exhaust This is a pix of the flapper...
  6. J

    Delco Voyager EST ingition installation

    I hope you can help me. I bought a brand new Delco Voyager EST ignition system complete on E bay...'cept the installation manual didn't come with it. I don't want to connect the wrong wires and burn up the EMC. The plug-in with the green/white stripe wire on the right side of the ECM usually...
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