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  1. Texasmark

    Torque, Thrust, and Force

    Read a couple of comments yesterday and I think Q.C. and Walleyehed to name a couple, were involved and it reminded me of a personal curiousity that others might also be interested in. Marine Engine Design 101: Ok, let's say that my job is to design a 50 hp outboard motor. We go through...
  2. Texasmark

    JB, what do you think about this one too?

    What about referencing this one too; like the OMC history I mentioned earlier, for the same reason? Thanks, Mark
  3. Texasmark

    Ratings on trailer tires

    I ran across this subject a couple of years ago but forgot the answer. I bought new 6 ply 14" rim tires for my trailer and they were "trailer only" rated. Why is that? Is that better or worse than P or LT ratings as tire quality goes? Thanks,l Mark
  4. Texasmark

    Goes without saying

    Today is one of those days that calls for indoor amusements. In looking for new things to do I happened onto the "Completed Boat Projects" section herein and became engrossed in the first masterpiece: "14' Welded Aluminum Skiff" by Kevin Morin. Humbling does not begin to describe how the work...
  5. Texasmark

    Early Merc 3 cyl lower unit choice

    Ok you guys in the know, I'm going to stumble through this with several inaccuracies i'm sure. My intent here is to answer the question for me as well as others that may have had the same curiousity not focus on beating me up. Grin Somewhere back in the '70-'80 timeframe, Merc decided to come...
  6. Texasmark

    Lower Unit Plug Gaskets

    Just changed my lower unit oil today. Lotta people harp on things and bein a Texas Redneck, I like to separate fact from fiction. When I bought my last 2 Quarts of Merc Premium lower unit oil (for high performance applications, stern drive or OB), I bought 2 sets (6 each, beins mine uses 3...
  7. Texasmark

    I thought my trolling motor was overkill

    Well I did till yesterday. I hadn't used the boat in quite awhile, wanted to run some fresh gas through it, and I had replaced a CDI unit that had a cold temp problem and wanted to know how it worked. I didn't look at the news media on the weather, but I can usually see when a front is coming...
  8. Texasmark

    Lifting Strakes Function

    Seems to be some confusion as to just what do lifting strakes do? Well, obviously, any time you increase the thickness of something, you increase the strength. In the case of a strake, you deform the glass mat to get the strake and the strength, but you don't have to pay the price of added...
  9. Texasmark

    FYI on Syn Oil use from OEM's

    Reading the owners manuals for a farm tractor Cummins Diesel engine, and a Kohler Air Cooled riding mower engine yesterday. Both recommend using parafin based oil for the first oil change then say use of syn's is ok fine with them. Now why do you suppose that is.................because the...
  10. Texasmark

    The Battle is On

    We've been yakin about what to do about your fuel in your fuel tank over the winter the last few days. So I hear that Sta-Bil has a new Marine preservative. I have been using Sea Foam for about a year now, in every internal combustion engine I own and I own all types out there. You be the...
  11. Texasmark

    Corroded terminals

    Was filling up the livewell day B4 yesterday and started getting some real intermittent operation out of the fill pump. Didn't know if the switch was going bad or the motor. Checked it out yesterday. Problem solved: shot the spade terminals on the switch with WD-40 and moved them back and...
  12. Texasmark

    Mr. JB Moderator, Sir

    Does the anti-inflammatory requirement for posting include comments about the management of this site, i.e. associated commercials? Need your answer before I make inflammatory remarks about nuisance advertising that has gotten out of control on here. The comments won't be concerned about...
  13. Texasmark

    Hey Silvertip

    NGK BP8H-N-10 plugs still running good. Light tan insulator and piston has uniform coloring across it. Was out yesterday (running my 21P prop rather than the 24) and it turned out 6400 @ 48 and kept a purring. Mark
  14. Texasmark

    One more time: Bad Gas

    Well, the skeptic gets whacked one more time. You guys have posted about bad gas many times and I just blew it off.....as I usually do, till I've had an encounter. Well, yesterday I got my 2 cycle tiller out, which hasn't been run for a long time, maybe a year. Tried to start it and it did...
  15. Texasmark

    News for you "I don't know which prop I need"

    Was surfing over in the iboats motors, props, and things and ran across a "Rite Prop Exchange" program. Couple of conditions: Solas props only (no biggie), V6 Mercs, and no damage. If your first guess is wrong send it back with a $10 bill plus round trip postage and you can guess...
  16. Texasmark

    Hitting the engine efficiency thing again cause I'm (was) a skeptic

    The first good cold front hit N. Texas today and you can't farm in the rain. Cows are fed and all the equipment is "temporarily" fixed, so nothing to do in the shop. So back to the house, get on the puter and talk about boats. Today I happened to be on the Boston Whaler web site and looked...
  17. Texasmark

    Now I'm Really Confused

    Had a response I made to a V6 temp problem questioned. I started back tracking to verify what I said and pulled out my 3 cyl 90 hp service manual. It covers '94 thru '98 and supposedly above but I don't know how long that was. Anyway I start differentiating between the use of tan and tan/lt...
  18. Texasmark

    Heron Bass Fishing (Like in Great Blue Heron)

    This is my first time here in the fishin section so howdy all. This is long but I think it will be informative reading for you and I hope you enjoy and are enlightened by it. ---------------------- I have a farm and on it is a 2 acre pond/lake/pool/tank or whatever you choose to call it. The...
  19. Texasmark

    Fat 50 Johnnyrude vs 50 hp looper

    Mind was wandering the other day and got to wondering if anyone had compared the performance of a late '50's 4 cyl 50 hp with a later loop charged 2 cylinder. Just thought it would be interesting to know the results. Several huge differences: Cubes were 70 on the fat as I recall; don't know...
  20. Texasmark

    I don't know about you but.................

    I can certainly do without the blinking commercials in the right margin. If anything it is a deterrent to making the purchase and is extremely annoying!!!!!!! Mark
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