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1957 Ranger IV, Evinrude 30hp Lark 10 Sep 2022 19:39 #122476

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Thx gents very large smile or at least atm..

I’ve found now that I’ve ran for couple hrs WOT rpm have come down, not sure this is normal.. high speed needle is where it’s happy at 24mph at 3500rpm .. not sure but changing to a 11 1/2 prop in future when I find just to see what it does. 
A bit strange rpm drop 500rpm but seem to still run good and planes nice like it did this morning. Idle and temps are still good.. 
mill be checking rpm wire to start haha..
I’ll run it all day and take it home check spark plugs, hoses, steering, points and fix the gosh dang cowling clamps that for the life of me cannot remove.. springs maybe worn out? But done ever To remove screws hold clamps(don’t have springs) and maybe oval hole to move placement to keep tight.. one day I’ll find the lark cowling..

happy boating… for now Dan lol clutch dog brand new and not heard a peep out of it.. not sure if that was sarcasm or truth but agree some curve ball will come absolutely.. let’s hope with all the work/struggles I’ve had I’ve learned enough to repair on my own … time will tell

feathercraft gods have been over me this morning!!
1957 Ranger IV
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Last edit: by cballer.

1957 Ranger IV, Evinrude 30hp Lark 10 Sep 2022 18:38 #122475

My experience is that if it's running like a top....



............then the shift dog is about to go.

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1957 Ranger IV, Evinrude 30hp Lark 10 Sep 2022 17:49 #122473

Happy day, great news
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1957 Ranger IV, Evinrude 30hp Lark 10 Sep 2022 17:15 #122472

Happy day!
As long as it has been sitting it could get better the more you run it.
Mike
1950 Skipper on Holsclaw Boat Roadster trailer
1954 Skipper w/ ’54 Johnson 10hp
1954 Deluxe Runabout w/ ’54 Johnson 25hp
1954 Vagabond w/ '57 Johnson 35hp
1955 Alumacraft FD on a Gator trailer
1956 Alumacraft FD
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1957 Ranger IV, Evinrude 30hp Lark 10 Sep 2022 15:49 #122471

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Well I can’t explain the excitement!

40km/hr, 4100rpm boat rips!

found new good condensers though original ones worked well..

in the end it was the packing on high speed needle causing issues… at least I believe that was issue!

so question I’ve seen two max rpm documents for this motor.. can someone tell me the max I should run? 4000 or 4500rpm?
I can tell by sound a bit around 4200rpm motor is spun out but maybe adjustment on needle. I don’t want to run to hard to start but temps are good water pumping and lots of oil so that’s not a concern as of yet but feel I can get a bit more out of her 

HELL YA GUYS THANKS FOR ADVICE AND PATIENCE WITH ME.. she runs 5th trip out.. if something changes who knows but going to run her fast and hard to get everything seated.
 
1957 Ranger IV
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1957 Ranger IV, Evinrude 30hp Lark 08 Sep 2022 23:19 #122446

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Np I’m in same boat, actually questioned myself wondering what if!
1957 Ranger IV
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1957 Ranger IV, Evinrude 30hp Lark 08 Sep 2022 20:31 #122444

You are correct. Brain was not fully engaged when that thought crossed my mind.
Mike
1950 Skipper on Holsclaw Boat Roadster trailer
1954 Skipper w/ ’54 Johnson 10hp
1954 Deluxe Runabout w/ ’54 Johnson 25hp
1954 Vagabond w/ '57 Johnson 35hp
1955 Alumacraft FD on a Gator trailer
1956 Alumacraft FD

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1957 Ranger IV, Evinrude 30hp Lark 08 Sep 2022 20:12 #122442

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MikeSo for packing.. I honestly don’t think any of it made it into carb but there’s always a chance, I did make sure when I pulled high/low that I cleaned throughly with pick and vacuum before putting anything back in threads.. the only thing I would have like to do is run tap through threads but didn’t have 7/16 with right thread pitch on packing nut, and wasn’t able to prove what the exact thread/pitch was for needle jet.. so held up..im confused a bit on fuel filter .. does gas go through jets then filter then into carb? I think fuel comes in from pump to filter then bowl then jets? I can’t see packing plugging filter but it certainly will plug a jet. So curious why running no filter would relate to packing?Vent yes almost to much vent I’m worried water may get into vent at this point.. I think my primer ball would show signs of being sucked in possibly as well so flow is there. thx for suggestions there’s definitely a chance of packing in carb but small chance and not full restriction as it runs really great.. and it’s not popping/starving sounding when WOT is being called for..
1957 Ranger IV
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Last edit: by cballer.

1957 Ranger IV, Evinrude 30hp Lark 08 Sep 2022 17:03 #122439

If your packings were chewed up they could cause a restriction. Try it without the filter.
How is your fuel tank vented? You may want to try running and loosen the cap and see if it has any effect.
Mike
1950 Skipper on Holsclaw Boat Roadster trailer
1954 Skipper w/ ’54 Johnson 10hp
1954 Deluxe Runabout w/ ’54 Johnson 25hp
1954 Vagabond w/ '57 Johnson 35hp
1955 Alumacraft FD on a Gator trailer
1956 Alumacraft FD

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Last edit: by oldlure.

1957 Ranger IV, Evinrude 30hp Lark 08 Sep 2022 16:05 #122436

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Something I may have over looked is fuel filter in carb glass bowl.. it seemed good when I cleaned bowl out.. not sure if a guy can service them much.. but could cause a restriction at WOT but doubtful on this but can try running without it just to verify.. just a side note.
1957 Ranger IV
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