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  1. Eric 3.7LX Alpha 1

    3.7 / alpha 1 winterizing questions

    And here is the last page. If your worried about freeze damage, check the coolant strength in the engine. drain the aft end plug at the bottom of the exchanger. If you open the drain in front you will release antifreeze, and if you have a drain on the power steering cooler open it as well. I...
  2. Eric 3.7LX Alpha 1

    3.7 / alpha 1 winterizing questions

    Easy.... here are 4 pages from the manual covering it all Page 3:
  3. Eric 3.7LX Alpha 1

    3.7 / alpha 1 winterizing questions

    Easy.... here are 4 pages from the manual covering it all Page 2:
  4. Eric 3.7LX Alpha 1

    3.7 / alpha 1 winterizing questions

    Easy.... here are 4 pages from the manual covering it all Page 1:
  5. Eric 3.7LX Alpha 1

    Mercruiser 3.7 4cyl fuel not getting to carb - replaced fuel pump and same problem

    To only thing you can do is test the pump with a psi gauge. Auto Zone has them... 25 bucks. Here is the one in stock at the 1535 Laurens Rd, Greenville, SC store.... ;) you may even be able to rent it from them. http://www.autozone.com/autozone/acc...er=487843_0_0_ You will also need a...
  6. Eric 3.7LX Alpha 1

    spliting mercuiser sterndrive after its removed from the boat

    Just keep spraying the exposed bolts with penetrating spray. if you have to pry them apart at all, just be as even as possible and stay away from the area of the quad ring. It seals the oil passage between two halves, as noted in the picture:
  7. Eric 3.7LX Alpha 1

    1968 Penn Yan Mercruiser 160 impeller time.

    If you have to pry them apart at all, there is one area you want to stay clear of when prying.... The seal between the halves called the quad ring gasket. is shown in the pic below. That is how oil runs from the lower up to the upper half and out the vent hole. After you have them apart. There...
  8. Eric 3.7LX Alpha 1

    Alpha 1 - Replaced bellows, gaskets, still water in drive bellows and shift compartment

    How about your shift shaft bushings in the bellhousing? The upper one is also a seal. If it's worn it could let water into the shift cable area. I don't think it would let water into the bellows though. That black round seal would also have to leak by. I also use some bellows adhesive on that...
  9. Eric 3.7LX Alpha 1

    leaking coolant pump

    Ok guys I found a way to upload pictures.... Don't use the camera link on the top left. Instead... click on the "letter A" center right side. You will see 3rd in from the right side insert "image" button worked perfect. Try it ;)
  10. Eric 3.7LX Alpha 1

    Threads we have posted in" icon" not found......

    Is there some kind of icon that tells us we have posted in the thread as you scroll thru them. There use to be a small symbol that let you know you've posted in that thread. I don't see anything that lets me know. I sometimes have a hard time remembering which ones I've commented in and like to...
  11. Eric 3.7LX Alpha 1

    Problems with first rebuild

    Re: Can you verify roller or flat tappet lifters from this photo? Re: Can you verify roller or flat tappet lifters from this photo? Like Chris mentioned roller lifters have a bar connecting two together so they don't spin. Hydraulic lifters don't.
  12. Eric 3.7LX Alpha 1

    trouble shooting two problems

    Re: trouble shooting two problems Welcome! I don't think the oil pressure is causing the engine to stall out. If the pressure was low enough to do that, you would hear the lifters clatter due to lack of oil. If the lifters do not "clatter" at idle, there is sufficient volume of oil to...
  13. Eric 3.7LX Alpha 1

    water pump kit?

    Re: water pump kit? The difference between the kits is the Water pump base. Every other part is the same... You will want to ensure what lower you have.... it will either have a preload pin on top or not. That will determine your kit. Don't get the wrong one, damage will result. If you look at...
  14. Eric 3.7LX Alpha 1

    Purchased a lower unit with pin on driveshaft.... will it work?

    Re: Purchased a lower unit with pin on driveshaft.... will it work? The lower with the pin IS NOT an Alpha One, it's older. If you order a new impeller kit for it, they have different lower water pump base. The pin lower is either a MC1 or R drive. It will work for you just make sure you get...
  15. Eric 3.7LX Alpha 1

    470 overheating, is this normal flow through the heat exchanger?

    Re: 470 overheating, is this normal flow through the heat exchanger? You can test the water flow from the outdrive into the voltage regulator (if it's still there), to ensure the drive is giving you enough water. This test is in the water not on muffs. At least that can eliminate the drive as...
  16. Eric 3.7LX Alpha 1

    I think my Shifter is bad?

    Re: I think my Shifter is bad? The only way to tell which one you have is to remove the drive and look. It's possible someone has already converted your bellhousing to the newer style cable. The shift cable is removed by disconnecting it from the engine side and pulling the entire cable out...
  17. Eric 3.7LX Alpha 1

    Where is timing tab SUPPOSED to be - 1987 Mercruiser 3.7 ????

    Re: Where is timing tab SUPPOSED to be - 1987 Mercruiser 3.7 ???? That light will do nicely... I have it's older brother: doing a little research....... causes could be worn distributor bushing or distributor gear or the advance weights/springs.
  18. Eric 3.7LX Alpha 1

    Risor/elbows/manifolds system/s question.

    Re: Risor/elbows/manifolds system/s question. Have you ever checked the firing order to ensure the plug wires are on the correct spark plugs? It wouldn't be the first time...last one on here checked and double checked... then after checking again two wires were crossed and the engine was...
  19. Eric 3.7LX Alpha 1

    Where is timing tab SUPPOSED to be - 1987 Mercruiser 3.7 ????

    Re: Where is timing tab SUPPOSED to be - 1987 Mercruiser 3.7 ???? In the distributor under the cap. The mounting plate that the points and condenser are screwed down to...... Remove that plate and under it are the advance weights and springs. They are great on fuel and have loads of torque.
  20. Eric 3.7LX Alpha 1

    1987 Searay 268 with twin merc 470"s

    Re: 1987 Searay 268 with twin merc 470"s Have you checked the flow from the outdrive into a container.... timing it at the correct RPM yet? Here's the service bulletin on the procedure to check it: Here's what Service Manual 8 has for possibilities of over heating:
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