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  1. a70eliminator

    Any advantage to 8mm or larger plug wires

    Gathering up pieces for a complete OMC 5.8 Ford ignition tune-up Plugs-NGK UR5GP Sierra- Points&condenser cap&rotor Wires- still deciding which ones Ok 8mm wires, advantage other than thicker insulation? Being I'm still with points ignition and factory coil anything other than the original 7mm...
  2. a70eliminator

    5.8 ford starter slow cranking

    Attemting compression checks I've noticed engine cranking seems slow and sluggish with spark plugs removed, Also when out on the lake the starter always seemed to really labor as if battery was low but it's a good fully charged 650 amp battery, luckily the motor always starts right off with just...
  3. a70eliminator

    Help with low compression numbers

    Hi, we have a 1990 5.8 ford unknown hrs. I did a comp test on all 8 cylinders today (engine was cold) if that matters? I opened carb and with all 8 plugs removed battery a little on the weak side if that matters? 1=110 5=100 2=120 6=80 3=110 7=110 4=110 8=120 I've never had any...
  4. a70eliminator

    OMC trim sender price gouging

    I'm really ticked off at the dealers who hoard up OMC parts, and triple the price, guys like me can't afford to get an their boat running. What I don't understand is that dealers are driving these parts up yet the value of an OMC is going down nobody wants them. Check this letter of reply from...
  5. a70eliminator

    Octane Ratings 87 through 94

    when your engine requires an Anti-Knock Index number (AKI)- 89 Research Octane Number (RON)-93 How would this translate at todays pump?
  6. a70eliminator

    pump squeal at full tilt

    Hi, I'm not quite sure if I'm doing dambage or not, but when my trim gauge reads full up the outdrive is actually only half way there, I'm guessing thats supposed to be that way to keep trim within effective range, although when I go to trailer my boat the only indication I have to let me know...
  7. a70eliminator

    4 dire to a 3 wire trick

    I've burnt out two converters with my new trailer, the first one was used with my other boat for 5 years and never a problem till my new boat trailer, the only difference is the new trailer has 1 marker light on each side and 3 across the middle in the rear, my old trailer did not have marker...
  8. a70eliminator

    drilling out fuel bowls for a sight plug (holley)

    Do you thing it would be a mistake If I were to drill a hole and tap for 1/8" pipe plug. I can find the the exact location with any holley bowl that has the sight windows, I'm using the adjustment procedure making floats level with the bowl when inverted but would like to be sure the level is...
  9. a70eliminator

    Omc 5.8L Oil pan drain retainer

    Threads are stripped off the retainer bolt, the steel threads in the pan are good, I couldn't locate a new retainer bolt anywhere so I'm going to have try and fix this one or make one I guess, does anyone know the thread size?
  10. a70eliminator

    Green lube in my cobra gearcase

    I drained my lower unit today and found the lube to be a nice and clean looking green smelly stuff, what type of lube could this be? Is the OMC hi-vis lube green? I would like to buy the same stuff.
  11. a70eliminator

    Idle screws non responsive

    Ok it's a holley 4160 4bbl on a 5.8 ford 1990 OMC. I rebuilt the carb and since have had it off apart like 3 or 4 times trying different things to get the idle in sync. It idles ok but hunts a little and I can screw the idle screws all way in it still runs. Here's what i've already tried...
  12. a70eliminator

    a picture worth a thousand words

    Ok here's some photos of the water intake hose i'm refering to in my previous post, maybe this will help you understand why I'm not real worried about the patch comming off, even if it did that little split in the hose didn't effect anything before, I don't think the hose sees much pressure it...
  13. a70eliminator

    Water intake hose must not be too critical

    1990 Chaparral OMC Drive 5.8 Ford In the process of replacing lower shift cable, I find the water intake hose has a 1" tear near the top clamp, it looks as though the grounding cable cut through it, fortunately I never had any cooling problems. This may sound hoakey but I roughed up the damaged...
  14. a70eliminator

    I think I made a mistake buying this OMC

    Yep. I've been just a little disturbed lately, I bought this 20' chaparral for a family fun boat 1990 OMC Cobra drive 5.8 4bbl Ford, I had no Idea about the whole OMC thing with getting parts an all. Anyhow first trip my positive cable chaffed and shorted out against the exh. manifold quick...
  15. a70eliminator

    Help, can't locate these windsheild snaps

    I'm missing about 10 widsheild snaps, I have not been able to locate this peticular style, they clip on like any typical ones do but they have only one lip that fits up under the winsheild rail, the rail is over an inch wide on this 20' chaparral bow rider, all the clips I've found are for...
  16. a70eliminator

    20' chaparral 5.8 40mph@3500 ?

    Hi I'm new to this forum and this is my first post so be easy on me. I'm the new owner of a 1990 chaparral with the Ford 5.8 First time out the other day and WOT was only 3500 RPM although my speedo was reading 41MPH which felt about right, do you think my tach is off? I hooked up a known good...
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