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Author	Topic:   Wanted-to-Borrow: Propeller for OMC V4
Martin Harayda	posted 12-26-2007 11:57 PM ET (US)         [Wants to borrow a propeller which will fit an] 1986 [OMC] v-4 looper v-4 gear case 13.5" or 13.75" x 22"
jeffs22outrage	posted 12-27-2007 10:26 AM ET (US)             If you have a relationship with a good OMC / BRP dealer or service shop they should let you take their test props and use them for testing on your boat. Some may charge a deposit while others might not.
Tom W Clark	posted 01-02-2008 08:35 PM ET (US)             What motor? Propellers are not necessarily interchangeable between brands.
L H G	posted 01-02-2008 08:48 PM ET (US)          I have found that the term "Looper" is used by OMC only, mainly for the 4 (2.0), 6 (3.0) and 8 (4.0) cylinder big bore [motors] of the 80's. (and still the same "looper" block being used for the 3.3 liter E-tecs of today. Mercury introduced the first V-6 loop charged engine in 1976 as 2.0 liter block, but never used that term.
Tohsgib	posted 01-03-2008 01:01 PM ET (US)             OMC was the first Loop charged outboard I believe with their 50hp in 1968. That engine was basically used until last year or so and still might be the block for e-tecs. Nobody ever used Looper for the most part until the big block V4. I guess it distinguished it from he cross flow V4 that was also being sold. Not sure why OMC or anyone else made cross flow engines being the loop design was far superior in efficiency. I believe just about every Yamaha and Suzuki were loop charged. Mercury eventually went that way as their older designs fell off the line. OMC for some dumb reason was still making them...no idea why. For example...their 50 & 70(3cyl) were loopers since the 60's. When they invented the 35hp in 1976, it was a crossflow. Same with their V6's in 1976...why?
Martin Harayda	posted 01-04-2008 01:13 AM ET (US)             my motor is a 1986 johnson 140 hp. looper w/ 13 spline shaft i have a 13"x17" 3 blade sst way to small on my montauk omc said to keep rpm @ 5500 no more im hitting 6000 and thers still more throttle i need 13 7/8" x 23" sst
Tom W Clark	posted 01-04-2008 09:29 AM ET (US)             I'm not sure you will be able to turn a 23" pitch SST, nor do I think BRP makes such a prop. You should probably try the 13-7/8" x 21" SST, part #176574, a 13-1/2" x 22" Quicksilver Lightspeed, part # QS5222H (with appropriate hub kit) or a 13-1/4" x 21" Stiletto Advantage I, part #21321
Tohsgib	posted 01-04-2008 11:38 AM ET (US)             I agree with Tom but also I know your engine redlines at 6000, not 5500. I think a 20-21" would be perfect. I have a 14x20 Stilletto that would need a new hub(mine is 15spl) but would probably be a great match. New hubs cost $45.
Tohsgib	posted 01-04-2008 11:40 AM ET (US)             Sorry make that a 19-21" would probably be great.
mudmanh41	posted 01-04-2008 06:27 PM ET (US)             How much for the 13.25 X 17sst? I have been looking for one. My Johnson 90hp is crying for one. Pat Hayes
jimh	posted 01-06-2008 11:48 PM ET (US)             Please use Martin's thread in the PERFORMANCE discussion to discuss what propeller he ought to be trying.
Martin Harayda	posted 05-03-2008 08:59 AM ET (US)             mudmanh41: I'll take $50.00 for the prop

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