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  1. natemoore

    Help interpreting instructions #6 manual (Alpha One)

    Look at page 3A-19 if you don't mind and read the section titled "U-JOINT ASSEMBLY-SETTING PINION BEARING PRELOAD." My drive HAS the small spacer "h". It certainly looks to me that all you have to do the set the preload WITH spacer is just torque down the pinion nut to 70-80 lbs-ft, in other...
  2. natemoore

    reinstalling bell housing after bellow replacement

    My problem is not getting the drive bellows to slip onto the gimbal housing or the bell housing. I was able to do dry runs both by starting with the drive bellows on the gimbal housing and pushing onto the bell housing, and starting with the bellows on the bell housing and pushing onto the...
  3. natemoore

    470 engine alignment

    It looks like the Mercruiser engineers wanted us to do micro-adjustments to the engine alignment by shoving, shaking, and kicking the engine. I finally got the alignment tool to go all the way in and rotate. Since there is no specification for maximum pounds of force it should take to fully...
  4. natemoore

    Got my first tattoo last night

    At the age of 46, I got my first tattoo. Figured by the time I lived to regret it, I'll be dead. Rush fans will immediately recognize their "starman" logo. This logo, and the first half of the 2112 album was inspired by Ayn Rand's classic novel Anthem. It is about a world in which the state...
  5. natemoore

    Short shaft Alpha One question

    The groove in the short shaft looks so clean and sharp that I wonder if it is machined into the shaft. Up close it looks like a perfect v-groove of consistent width and depth around the entire circumference. No rust or pitting in the groove either. So, would a new short shaft have a smooth...
  6. natemoore

    Improvised 470 engine tools

    Rear oil seal installer made from 4" PVC cleanout, some plywood, and a piece of a wooden closet rod.
  7. natemoore

    Help. Quick. Lube for alternator rotor 470

    I just threw out an old tube of "Chicago Manufacturing and Distribution Co. anti-scoring, extreme pressure Lubricant No.3" the other day, and low and behold, I need it today.:mad: Just kidding. Can I use Perfect Seal on the crankshaft end and inside diameter of rotor? Or 2-4-C grease? Gun...
  8. natemoore

    oil pump alignment

    Okay. Is this an attempt by Mercruiser to sell another $50 tool (91-148220)? I asked my boat mechanic friend if he had one. He said they never used one. I also remember a member of this forum saying the same thing. It seems the play built into the distributor shaft would account for any...
  9. natemoore

    Someone removed the thermostat on my 470

    I live in the panhandle of Florida and don't plan on running my boat when it's really cold out. I suppose someone removed the thermostat because of over-heating concerns. Should I put one back in?
  10. natemoore

    470 exhaust manifold, looks okay?

    I pressure tested my manifold. There are no leaks. That's good. You can see from these pictures that there is considerable erosion around the #4 cylinder mating surface, as compared to the #2, also shown. The Quicksilver manifold is $900. An aftermarket company called GLM is going to start...
  11. natemoore

    Think I found my coolant leak (470)

    Looks like this was the problem. Coolant was getting into my exhaust manifold through a leak in the exhaust elbow. The inside was eaten away. Cha-ching. Another $200. At least my exhaust manifold is good. I know we have a couple/three 470 rebuilders at the moment. This would be something...
  12. natemoore

    Testing trim limit and position sensors

    Anyone know how to test these? Seems like the limit switch would be an on-off microswitch and the sender would be a potentiometer (variable resistor). Any info is appreciated.
  13. natemoore

    470 impeller cover gasket squished out

    I was installing an aftermarket (Sierra) impeller cover gasket yesterday. I put Perfect seal on both sides of the gasket and torqued it down to 15 lbs-ft. I noticed that the gasket material squished out in a couple of places around the bolts. See photo. I've never had this happen before...
  14. natemoore

    What's it worth? Alpha one stern drive unit

    Since an SEI 106 is about $1200, and I've got a few hundred dollars in parts to buy for my stern drive unit, I'm considering just buying the SEI if I can get enough money for my unit. I've searched craigslist and ebay, but can't find anything but reman units. My unit runs fine. No water in...
  15. natemoore

    470 impeller, new style, won't tighten

    I was putting the impeller back on today when I started having self-doubts about it touching the front cover on the back side, so I took the impeller off again to get another look at the backside of the impeller and the inside cover. Then I noticed some aluminum powder on the threads...
  16. natemoore

    470 piston ring questions

    But first, I still need some answers on my "crankcase installation thread" before I button it up. I'd appreciate you looking at that one too. Now, piston rings..... The Mercruiser manual and the Hastings instructions included with the rings contradict each other regarding the orientation of...
  17. natemoore

    Field Expedient Rear Seal Installer, 470

    No rocket science here, just part of a 4" pvc cleanout, a couple of plywood discs (one rabbeted to accept pvc ring), and a piece of a wooden closet rod. Please post pictures of your own reverse engineered tools.
  18. natemoore

    470 crankshaft installation questions

    I checked my bearing clearances. All were within specs.:) Here are a few questions: When checking crankshaft endplay at the thrust bearing, should one shove the crankshaft to one side so that there is zero gap on one side of the thrust bearing, then measure the endplay at the other side...
  19. natemoore

    Proper orientation for 470 camshaft seals?

    Read this excerpt from the #8 manual. "1. Apply Loctite 8831 to outside diameter of all oil seals.... 2. Both water pump seal lips face water side.... 3. Fill space between water pump oil seals... 4. Install crankshaft seal with seal lip toward engine block. I've received conflicting...
  20. natemoore

    Visiting the machine shop tomorrow

    I'm taking my 470 engine to the machine shop tomorrow. He ball parked a figure over the phone for him to take my junk and return it as a rebuilt long block: $1800. I can't spend that kind of money right now. He quoted individual operations like boring ($60), turning the crankshaft ($90). I...
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