Search results

  1. 7

    90hp Mercury 4stroke

    Recently bought an aluminum boat with a 4stroke merc,the boat has not had its (first) 50hr service. Hour meter reads 35hrs. What does the service consist of? Is this something I can do or does it need to go to a dealer? Also can it go before 50hrs or slightly over the hours, thinking about using...
  2. 7

    Key Largo center console

    Can anyone tell me why these 2 boats seem so different in hull design, they both are key largo's. Did they change hull designs after a certain year? I know that there are similar boats like a Palm Beach that look identical. Very interested in finding one like the first pic around 16ft,but most...
  3. 7

    302 mercruiser not firing on all 8

    I have a 1974 mercruiser 302 which ran fine earlier this year.July 3 took it out and heard a noise from engine box (possibly backfire),motor never skipped a beat.next day took it out and couldn't get the boat on plane (no power) throddle all the way out.All plugs were carbon fouled.Mechanic has...
  4. 7

    302 correct firing order?

    1974 century resorter with a 302 mercruiser.The tag says 225R, 225 being the hp .The R being right hand or reverse rotation or are they the same.idk. Ihave found info that says stnd rotation is 15426378 but if it has a 351 cam it could be 13726548.Reverse rotation should be 18736245 or a...
  5. 7

    hot manifolds

    Started my 74 mercruiser 302 for the first time.After about 15 min I noticed the manifolds getting hot, not super hot but you couldn't leave your hand on it for more than 4 sec.Port side got hot first (original manifold)then strb side got hot soon after(recently replaced because it was...
  6. 7

    74 mercruiser 302 torque specs?

    Here is my loaded question.I am looking for torque specs on a 74 mercruiser 302 for the exhaust manifold and riser and spark plugs.Also should i be using any sealant on the gaskets and bolts and plugs?Thanks
  7. 7

    Mercruiser 302 ford

    A 1974 century boat i just bought has a mercruiser 302 ford (windsor)4 barrel.The tag says model #225R.My question is what does the R stand for as all i can find is info on a 225S and how many HP does this engine have?I have seen 188hp (888) and 225 hp.I have also seen the decription of...
Top