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  1. matt167

    1972 Holiday seat replacement

    Most of those jump seats met a junk pile by the fisherman who bought the boats... FWIW Starcraft used the same seats on all of the tin I/O boats. Nobody really fits into them, except kids. That said, I'm glad that my Offshore V 18 has them along with a completely recovered interior prior to me...
  2. matt167

    1979 Starcraft Chieftain

    The run of the mill Mercury TOP weighs in at around 300 lbs, and at ~115hp that is a motor that would have been common on them when new. An F115 Yamaha weighs 377 lbs, and 150's are in the 500 lbs range. A modern 115hp will have about the same hp as an old 120-125hp
  3. matt167

    Tiller Conversions Seahorse 35

    yeah, their thirsty. They burn enough to feed a 50hp or even larger
  4. matt167

    Tiller Conversions Seahorse 35

    They are great running engines, just wildly innefficent and they use 24:1 oil ratio... Sell it to someone who needs a good remote setup on a vintage boat. Seek out a '80's to 90's Johnson/ Evinrude 20-35hp and you will be a lot happier
  5. matt167

    Help me decide- Johnson 30

    I have a 1987/1988 Johnson 20hp in nice condition with the model and serial numbers invisible. The printing is just gone. I think it's pretty common
  6. matt167

    4 HP Evinrude Coils

    appears that your engine has the old style magneto ignition which was used for a brief time between 1981 and 1982 I think. There was a CDI ignition used before that, and after that but OMC went 50's tech for a couple years there. The system uses 2 coils, 2 condensors, 2 sets of points and 2...
  7. matt167

    ***** NOT****iboats service manuals***** NOT****

    Find an old computer or use a virtual machine with an old version of windows and set the date to sometime last year.. SWF can be converted into HTML5 but it would take rebuilding every page.. I suspect that boatinfo ( in no way a part of Iboats ) used flash because it's not easily copied...
  8. matt167

    Bought another one from Rawhide Youth Services

    Troy Bilt/ MTD still makes the PTO model horse, which I think is actually a Horse III, and an upgraded version, but they basically start at $2,500. and they did shrink some parts in the gear case/ axles I recently repowered my grandfathers old 2spd that the old Techumseh 6hp was dead which I...
  9. matt167

    Why do they make 12 point sockets and wrenches?

    Head bolts are often 12pt and many other fasteners.. 12pt otherwise fits over the hex easier, which works if it's a low torque application. 12pt will also grab a square head unlike a 6pt. I tend to only buy 6pt, but have 12pt as well because they have uses
  10. matt167

    CCA for a 30hp 2 cycle Evinrude tiller

    trolling motor almost automatically needs something that will take deep cycle, as long as you have a battery that can deep cycle your good. A dual purpose battery can do the trick
  11. matt167

    CCA for a 30hp 2 cycle Evinrude tiller

    300 CCA will spin it over without an issue.. FWIW I start my 20hp Johnson on the stand with an Everstart U1 lawn tractor battery. But a battery with such low capacity will also not have a lot of amp hour capacity at all
  12. matt167

    Carter Fuel pump

    You can buy a rebuild kit at Napa for $20 or so... Be sure to change your oil given mechanical fuel pumps can fill a crankcase with fuel before they show external leaking
  13. matt167

    50-1 Mix in a new 4 stroke

    2 stroke oil is for the most part, upper cylinder lubricant when used in a 4 stroke.. Not going to do a thing
  14. matt167

    Force Chrysler 35 hp, pistons.

    Many of the piston companies in the USA will do custom pistons. Weisco will do custom pistons and also do outboard pistons. they could make you a set. But will need your dimensions and might even need an original to go off of so they get it right. It won't be cheap
  15. matt167

    Force Chrysler 35 hp, pistons.

    you can source custom pistons, but you'll spend more than it's worth
  16. matt167

    Is my 77 Inline 6, 250 CID, 165 HP a GMC or a GM Chevy

    GMC used the V engines until 1974.. The 250 integral head was used after 1975 on most trucks. If you needed a good short block, it would work in a pinch. separate intake heads are not too difficult to find.
  17. matt167

    Is my 77 Inline 6, 250 CID, 165 HP a GMC or a GM Chevy

    Some interesting information on the GMC engines https://en.wikipedia.org/wiki/GMC_V6_engine of course, none of this is actually boat related
  18. matt167

    1992 Bayliner Cuddy 3.0 Mercruiser

    It's not a lot of motor for that boat. 4.3L V6 is what it should have. But it will make a good beginner boat if it's solid and checks out. Bayliner built price point boats, and one way they did that was basically selling boats with smaller engines than they should have, and optioning larger...
  19. matt167

    Is my 77 Inline 6, 250 CID, 165 HP a GMC or a GM Chevy

    I don't think brand is stamped on any engine from the GM umbrella. When Chevy was using the 250 straight 6 in the trucks, GMC had a 305 V6 and a 351 V6. Stopped in the early 70s. Before the V6 they had the Jimmy straight 6 that was 302 cid or 265 iirc. They did v12 engines as well which were 2...
  20. matt167

    Is my 77 Inline 6, 250 CID, 165 HP a GMC or a GM Chevy

    Gmc until the early 70s had their own engines. And through the 70s had bigger engines for big trucks. Gmcs first v8 was a Pontiac.. GMC engines were never used in boats
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