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  1. tpenfield

    980 hours on engines - compression test

    Scott, Here is the history of compression tests, including the one done during the pre-purchase survey. . . The second one done in 2014 ( '2014C' ) was done same year after a decarb process. IIRC, I used water for the decarb in 2014.
  2. tpenfield

    980 hours on engines - compression test

    I have 980 hours on my twin Mercruiser 7.4 LX MPI engines. They are going to lap 1,000 next season, as I average 40 hours per year, since buying the boat in 2012. . . 2013 being our first season with it on the water. I have not done a compression test in a couple of years, so I wanted to do...
  3. tpenfield

    Moving axles; inches vs % need help

    Here are my calculations . . . EDIT . . . Fixed the arrows on the tongue and axle weights . . .
  4. tpenfield

    Smelly head

    Here is the system diagram from the Chaparral Owner's Manual (available online)
  5. tpenfield

    Custom Fiberglass Extended Swim Platform

    Finished the rough shaping today . . . . I will be filling a few voids and then doing some final shaping.
  6. tpenfield

    Custom Fiberglass Extended Swim Platform

    Progress Update: I got the foam 'plug' roughed out. I used 2" thick EPS sheets, glued together with PL adhesive. Next steps are to . . . Fill a few voids Fillet inside corners Sand to shape Coat with epoxy Apply non-skid material - still trying to figure out the best (and economical)...
  7. tpenfield

    Custom Fiberglass Extended Swim Platform

    I have been doing some searching for non-skid patterns for mold makers. I came across a company . . . Gibco (gibcoflexmold.com) that seems to have the patterns that many boat companies use for their non-skid. They happen to list this pattern for Formula and Fountain boats. It comes in both...
  8. tpenfield

    Custom Fiberglass Extended Swim Platform

    Thanks WoG :) That was the link I had been looking for and could not seem to find. I went out to the boat (on its mooring) and made a bunch of measurements. I figured the platform was going to be about 8 feet wide. Measured out at about 95" to fit on top of the existing platform. Here are the...
  9. tpenfield

    Custom Fiberglass Extended Swim Platform

    BTW - this is what the current standard/built-in platform looks like now . . . Admiral's feet and all :)
  10. tpenfield

    Custom Fiberglass Extended Swim Platform

    It looks like our next boat is still a few years away, so I am thinking about doing some enhancements to the current barge, a Formula 330 Sun Sport. I always wanted an extended swim platform to get the people out beyond the outdrives, as they present a mild hazard when doing the sandbar thing...
  11. tpenfield

    Question regarding wood used in new Sea Ray

    Here is a Sea Ray Factory Tour Video . . . These pics from the video look like a cruiser hull structure and layup . . .
  12. tpenfield

    1994 Four Winns Freedom 170 leaking from outdrive

    Transom assembly . . . Looks 'interesting' in that the leak is coming through a hole in the assembly, just below one of the mounting studs. Some possibilities are: 1) Leaking outer seal on the transom assembly 2) Rotting transom You could drill a couple of small (1/4") test holes into the...
  13. tpenfield

    Mercruiser 7.4LX MPI Throttle Position Sensor (TPS)

    Thanks AD. I got it sorted out. There were 2 set screws. I was able to get the TP down to 1.2% with the set screw and then I was able to loosen the sensor, tweak it and re-tighten it to take out the rest. 0% 0.55Volts Here is the Diacom readout . . . I then buttoned everything up and took...
  14. tpenfield

    Trouble Shooting Guide

    I found it . . .
  15. tpenfield

    How to add fluid to trim tabs

    Here you go . . There is a little cap that comes off just to the side of the motors.
  16. tpenfield

    Mercruiser 7.4LX MPI Throttle Position Sensor (TPS)

    According to my Mercruiser P/N searching, the TPS looks like this . . . I did not see any like images in the links, but maybe I need to look deeper into those web sites. I did see the eBay links. :thumb:
  17. tpenfield

    Mercruiser 7.4LX MPI Throttle Position Sensor (TPS)

    I got a TPS error code ( I think it was code 24) on my starboard engine (as I mentioned in my ECT Thread). I also got a MAP error code (I think it was code 33) I didn't write the codes down before I cleared them. Anyway, I am seeing occasional high idle and surging from the starboard engine...
  18. tpenfield

    Wood construction

    Here is some brochure info from the 1980's (I think)
  19. tpenfield

    ECT Sensor Temperature vs. Temp Gauge Reading

    Update: I added the resistors and took the boat over to get some gas and give them some sewage :) I also used my FLIR One to verify some of the temperatures. Here are the gauges at cruise Here is the starboard Engine temp where the ECT is located (engine idling) after cruise Here is a...
  20. tpenfield

    1961 Dyer Midget repair

    I found your boat's cousin this morning . . . sitting right next to my dinghy. :D It looks like the sailing version, since it has a Centerboard Trunk and a hole in the forward seat for a mast.
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