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  1. S

    new engine overheats

    thanks yes I'm looking at everything at this point. it is the same housing listed for both 5.0 and 5.7 with the single point drain system. same stat too. 160*
  2. S

    new engine overheats

    I do feel its bypassing too much since the temps vary so much. I have nothing "bravo" tho. I will check into that right now,, thank you. I thought they were the same part # between the 5.0 and 5.7.
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    new engine overheats

    I can lean on the risers with all my weight and stay there and not get too hot. I was just reading 165-170* + - 4* on both risers even at 195-200 on the temp gauge. they actually get hotter after sitting a while waiting to cool down. the engine read 195*+ so that is getting warmer than the...
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    new engine overheats

    The biggest issue here is, I did the engine swap 9 almost ten years ago. I ttttttthink I put all that back together correctly but time has me questioning everything. we heard a strange noise on the water as I shut the motor off,, it sounded like something spinning fast then coming to a stop...
  5. S

    new engine overheats

    The hose configuration is what's driving me nuts...... both elbows are teed together and run under the motor to a junction , the thermostat also , everything ties together for the drain system. I don't have decent pics of the junction, its busy under there.
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    new engine overheats

    I believe the gauge is correct. after start up and wam up it rises to just shy of half way between 160 -180 and sits there till it creeps. every time from a cold start it sit right there. ? today it ran perfect n the hose again, right there. then in the water it did the same, started...
  7. S

    new engine overheats

    it calls for a 160* according to the marine store and what info I have found. that's what I pulled out AND put back in.
  8. S

    new engine overheats

    sorry I read that wrong. it got over heat hot on the hose before changing the stat. and ithen t ran cool for at least 15 min at idle putting around near the ramp. even under way slowly. it didn't rise til after a few minutes at about 3200 rpm then once hot it didn't want to cool.
  9. S

    new engine overheats

    It seems to be.
  10. S

    new engine overheats

    it over heated on the hose before replacing the t stat. and in a poor test the old stat dID open in a pan on the stove. although i didn't have a working thermometer and it didn't open til the water was almost at a boil so that didn't rreally tell me squat. another day flushing and testing and...
  11. S

    new engine overheats

    they are new manifolds. I will be flushing EVERYTHING again today. backward and forward.. it was acting Better" after putting in the new stat but it did still got hot so ?
  12. S

    Mercruiser 2.5 ticking sound

    Be sure they gave you a head gasket for a 2.5 and not a 3.0 it will leak and tick,,, granted,, not like what you are hearing, but just a thought. btdt
  13. S

    new engine overheats

    I went ahead and opened up the T-stat housing and found the stat was the one I put in when I re powered in 16. it never was taken out or changed by anyone else after all.. I put a NEW stat in anyway it and I took it to a pond to test rather than wondering if the hose was feeding it enough...
  14. S

    new engine overheats

    Thanks, I put a new one in at rebuild but have now learned it was changed or pulled two years ago when a cousin tried to run it.. smh I will dig into the t stat and do a good back flushing to make sure everythings clear then if need be test the water pump/circulator flow this weekend, its 45...
  15. S

    new engine overheats

    oK yes I understand the thermostat does control flow. I'm trying what I can to determine why its over heating.. Do you have any OTHer suggestions as to why it may be overheating? as I said water SEEMS to be circulating through the system yet it slowly gets hot. it takes about ten...
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    new engine overheats

    Yes alpha 1 gen 2 1:62 ratio no I did the impeller last fall so that's fresh but no,,,, I havent back flushed,, the PS cooler?? it did sit in a barn full of mud wasps in Texas with the prop exposed.. it seems to be circulating water ok though. the one knob drain system ads a...
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    new engine overheats

    Lake water ,, cold weather,, not drained.. not good
  18. S

    new engine overheats

    it goes up even on a strong hose with double feed muffs. yes it sat for about 8 years not broken in.. never even run so internally it was still covered in break in oil,,,,, least thats what I'm telling myself LoL it runs great, it fired right up after sitting all winter without even a...
  19. S

    93 mercruiser 4.3 alpha one gen 2 fuel problem (I think)

    Could it be a weak coil? my 76 120 merc had that issue. and it seemed like a fuel thing, but,, it ran fine on the trailer for long periods testing but would stall shortly after launching..and re start after a lengthy wait. I cleaned everything over and over, carb, fuel pump, pick up... found...
  20. S

    new engine overheats

    This is a 2006 Chris Craft Speedster. I did the engine swap myself.. I went from a 5.0 mpi to a 350 Mag mpi after the 5.0 froze and cracked the block badly.. the swap went well the engine runs well, it seems to be pumping water as i have pulled manifold hoses while its running and it iS...
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