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  1. Big_Kahuna

    Alweld vs Alumacraft????

    2017 Alweld 1652 V Marsh with 2017 Yamaha 40HP kept the cash price under 12K New trailer also.
  2. Big_Kahuna

    Minn Kota trolling motor shaft shortening

    =D> I wonder if this would apply to the Minn Kota Edge. I have a 42" shaft on it and should have went with 36" shaft.
  3. Big_Kahuna

    Prop Selection Help

    :lol: That's what I was thinking 9 1/4x7
  4. Big_Kahuna

    Prop Selection Help

    Here is what I'm working with 15hp Johnson on a 14' jon boat. With 9 1/4x10 prop at WOT its 4750 rpm. Using a 91/4x5 at WOT its doing 6750. Service manual calls for 5500-6500 rpm range. These test are with a loaded boat. Me, son, lot of fishing gear plus newly added front deck. What...
  5. Big_Kahuna

    My jon boat setup tell me what is wrong

    I'll try that and see what I come up with.
  6. Big_Kahuna

    My jon boat setup tell me what is wrong

    Here are the photos of jack plate with 15hp Johnson 1/2 above keel. :arrow:
  7. Big_Kahuna

    My jon boat setup tell me what is wrong

    I'll see if I can get one up.
  8. Big_Kahuna

    My jon boat setup tell me what is wrong

    when the engineers design outboards(and im not sure but probably any engine) they start with the spark plug and design everything around that plug wich in 1980 were champions. I ran NGK's in my 80 Johnson 25hp for a while because the parts store didn't have my plugs in stock and when I put the...
  9. Big_Kahuna

    My jon boat setup tell me what is wrong

    Jay my man never said I was a mechanic. This is my first boat with an outboard. The motor was over revving. Only could go about 5mph with the fouled plug.
  10. Big_Kahuna

    My jon boat setup tell me what is wrong

    Ok here is the update. Must have been the fouled spark plug. Now running Champion I did have NGK's in it. In the river going up stream 5600rpm @ 18mph. Going downstream 55-5600rpm @ 21mph. I had different tach when I gave the first set of numbers using tiny tach this time. This was just...
  11. Big_Kahuna

    My jon boat setup tell me what is wrong

    So far what I have checked, got fire to both plugs. Checked both plugs and one looked fouled (oil) so I have changed them. Eyeballed the prop marked it now waiting to get back to the water. I will update with results. [-o<
  12. Big_Kahuna

    My jon boat setup tell me what is wrong

    im curious... if you have a 15 inch transom on your boat and your motors a short shaft and you have a mini jacker that provides 3 inches of lift how can your cav plate be 1/2 inch above your keel? them numbers tell me your cav plates 3 inches out of the water. 15inch transom with a short shaft...
  13. Big_Kahuna

    My jon boat setup tell me what is wrong

    I have done this but haven't made it back to the water yet.
  14. Big_Kahuna

    My jon boat setup tell me what is wrong

    Ok I'll check that once I make it back to the water. If it turns out to be spun, how could this happen meaning no taggle lines didn't run into weeds or stumps. Am I looking to replace the prop every three weeks?
  15. Big_Kahuna

    My jon boat setup tell me what is wrong

    =D> 1980 Monarch 14ft x 48in short transom 15in 8) 1980 15HP Johnson with 9 1/2 x 10 prop (what it came with from manufacture) short shaft 15in :cry: Mini Jacker provides 3in lift :x So that puts my anti-cavitation plate 1/2in above keel. So what went wrong. Today think I had a blowout...
  16. Big_Kahuna

    1981 Monark 1464 jon boat mod by Express

    :D Hey Express I got that same boat with a 15hp Johnson. I like the mods that you did. Do you currently still have the boat and how did it perform after the mods. Thinking about going this route.
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