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  1. trevtt600

    Mercruiser 4.3L electric fuel pump starter wire

    Hi everyone. I purchase a motor this winter to replace one in the boat. After wiring it up, noticed that the fuel pump starter wire (one that turns the pump on for starting) was jumpered to be 12V all the time with the key to Run. Well after looking into this, I noticed that the starter...
  2. trevtt600

    1986 merc 4.3 occasional misfire/backfire above 3000 rpm

    Hi all. I am kinda at lost here. I have an express cruiser with twin 4.3l mercs with thunderbolt 4 ignition. I had a couple tuliped valves on SB motor recently, so I removed the heads and had them reworked. Installed heads and all was well for about 10 hrs (sametime I installed new cap and...
  3. trevtt600

    1986 Wellcraft Monte Carlo refresh

    Well guys, I have been on the fence about starting a thread about the refresh of our 1986 Wellcraft Monte Carlo, but i decided what the heck. I am not sure how often i will be able to update the thread, but i will do my best documenting and capturing all of the updates i have planned in the...
  4. trevtt600

    Mercruiser 4.3L clear hose test FAIL... SOLVED!!

    Hello All. I am still dealing with over temp situation on my twin 4.3L mercruisers with alpha 1 gen 1 drives. Just went out this morning and did the clear hose test I did the flow test before and after the p/s cooler and got the proper flow about 1 gallon in 15 seconds. Actually filled more...
  5. trevtt600

    Trim pump will not go down... HELP Again!!

    Sorry for the second post, but figured i should separate this question with last question. Starboard trim pump (Newer Olidyne version with plastic reservoir) with work great in trim up or out position. Try to get drive down or in, and it will not go down, but the pump is making a high pitch...
  6. trevtt600

    1986 Mercruiser twin 4.3L starboard running hot HELP!!

    Hello All. We got ourselves a new to us 1986 Wellcraft Monte Carlo with twin 4.3L and alpha 1 gen 1 stearndrives. While it was on the trailer I services both outdrives including all new bellows, gimbal bearings, impellers, shift cables ect... Everything i could replace while it was on the...
  7. trevtt600

    Trim pump question

    I have a mercruiser olydine or something like that pump. Trim extented all the way up but would not return down. Pump ran for down switch but with a high pitch squeal. I switched lines at pump and drive went down no problem. What does it mean when lines at pump are swapped to get drive down?
  8. trevtt600

    1983 Seyler/Omi 22 (Possibly 22 Elan) possible restoration

    Hey guys. Look what i got for free!! Im not sure what i am going to do with it. There is NO information about this boat anywhere. From what i can find, if this boat is a Omni 22 Elan, it is worth up words of $15000 on the water! Does anyone have any info about this boat? Anyone ever owned...
  9. trevtt600

    Volvo trim control panel bypass?

    I have a volvo penta 500B with a DP-C outdrive. I have a trim switch in the throttle, and a trim control panel as secondary trim. It is the three button switch with a red button and 2 white buttons with arrows (pictured below.) The trim control unit works, but i was wondering if i can bypass...
  10. trevtt600

    DP-C1 U-joint replacement. What will work?

    I am replacing my ujoint bellows, and while i have the uppers gear box off the drive, i want to replace the u-joints. Do any of the after market u-joints work for the DP-C or do i have to get the $150 ones? If so, could you please post the part number so i can order them. thanks guys.
  11. trevtt600

    Replacing Volvo DP-C u-joint bellows

    Hello All. I have done some research on the forums about how to change the u-joint bellows on my 1992 DP-C outdrive. I have the manual from this site, and have also gone through the manual. After doing the research, I notice some people saying you do not need to remove the drive completely to...
  12. trevtt600

    Swapping Volvo 305 with 350. Any important parts to swap with motor out?

    Hello All. I have finally found myself a good motor to replace the 1992 500B (305 Volvo) that has a cracked block. Its unfortunate, because the 500B runs perfect, I just cannot get the crack to seal. The replacement motor is a Volvo Penta 350 rebuilt in 2007 with 100 hrs, 1986 or 1987, that...
  13. trevtt600

    Volvo Power Trim problem

    I have a 1992 Wellcraft Eclipse with a Volvo 500B (GM305) and a DP-C drive. Just got the boat on the water the first time tonight with only one problem. My trim switch on the throttle handle does not work. I have a seperate trim system which is 3 buttons that control the trim also. They are...
  14. trevtt600

    Wellcraft 21.5 Eclipse/Volvo 500 questions

    Boy. Just typed everything up and then closed the window. Have to start over!! :eek: Looking to purchase a 1992 Wellcraft 21.5 Eclipse with volvo 500 motor and duo outdrive thats been sitting for 2 years. Went to look at the boat and its in excellent shape. Been kept inside its whole life...
  15. trevtt600

    140 Mercruiser advanced timing ?

    1978 Mercruiser 140, Delco distributor. I have a dial-back advanced timing gun. When you set the advanced timing, do you subtract the intial timing of 6 from the 35@2000 and set the gun to 29 degrees, or do you just set the gun to 35 degrees and move the distributer to match TOD. After the...
  16. trevtt600

    3.0L exhaust shutter question

    Have a 1989 Wellcraft with Mercruiser 3.0L, alpha 1 outdrive. Motor is actually a 1978 though. I have what sounds like a rattle of some sort coming from the back of the engine down by the drive shaft. I was looking on iboats lastnight and saw that the exhaust shutters can cause quite a...
  17. trevtt600

    Shift box issue

    I have a older style quicksilver shift box, 1989 year, that has a slop in the remote shift cable attach point in the shift box. Its almost an half inch. I cannot get my shifting adjusted properly and i think this is my issue. Any suggestions.
  18. trevtt600

    3.0L Vibration at 2500 RPM

    Hello All. Took the boat for a ride with "new" motor today. Its a 3.0L mercruiser. Have an alpha 1 drive. At 2500 rpm when coming off the throttle i get a pretty serious vibration. It you try to cruise at 2500 same viration only not as bad. Seems like it is happening when the drive gets...
  19. trevtt600

    3.0 Mercruiser water in valve cover

    I purchased a used 3.0 to replace mine with a cracked block (motor has a 30 day warranty). I ran it for the first time today out of the boat on the ground. After i ran for about 5 minutes or so, i shut it off, and removed the valve cover oil cap. I notice a water/oil milky mixture in the...
  20. trevtt600

    Side mounted shifting vs. valve cover shifting

    Hey guys. Here is my dilemma. I am replacing my 3.0 mercruiser which currently has the valve cover mounted shifting. I have been having problems with the shifting out of foward and reverse even after a new shift cable and following the adjustment procedures. The new to me motor I just...
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