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    v4 crossflow: explain the cooling/exhaust relief holes just below the powerhead pan?

    I have three v4 crossflows. One is a frankenstein that started as a 90 block, but now is ported and has wiseco pistons and 140 carbs, and a bubbleback, etc... on that motor i'm trying to chase down a _possible_ overheating problem, and i'm trying to eliminate all variables before i dive into...
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    v4 crossflow bubbleback: looking at a thermostat job: what to order?

    overheat alarm sounds at mid power, not at idle, and little or not at all at high rpm... took the heads off and the passages are clean and the flow diverters are in place an in good shape. will take the foot off and re-check the water pump, but it's new with only a handful of hours on it and...
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    quick one sentence answer: propshaft oil seal orientation

    1985 Yamaha 40 ELK Changing the prop shaft seals. Ok, so I remove the two that are in the bearing carrier and see that they are NOT arranged back-to-back (smooth side against smooth side). Instead, I found both seals, fore and aft, with the spring side facing aft. I thought it was supposed to...
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    what causes sneezing, low rpm misfiring, and won't idle?

    this is on one of my v4 crossflows with an ordinary choke, not that newer quick start enrichment solenoid. it runs GREAT, at higher rpm if i can get it there without dying, but i can barely keep it running at 1500rpm--where it has an irregular miss, and occasional sneezing. i rebuilt the...
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    v4 crossflow no spark

    i just rebuilt the carbs and re-sealed the gearbox of my "franken-crossflow", ('77 block, wiseco pistons, 140 carbs and bubbleback, on an '80 lower, mid, and tilt/trim). late this afternoon, just before i had to leave on a work trip, i decided to fire her up. not even the remotest stutter or...
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    problematic carb'ed 90hp fourstroke

    ok, mine is not really having any problems, BUT i read everywhere about problems with these things. so, in advance of problems, i've been trying to search here about them, and not getting very much. i guess the carbs gum up really easily because of really small orifices. i _heard_ over on...
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    help ordering v4 crossflow tools

    i'm halfway through putting back together a frankenstein v4 crossflow, ('77 powerhead with wiseco pistions on an '80 mechanical shift lower. anyway, i want to check the driveshaft shim stack, and i reckon i need the right gauge/shim checker, and i need the right driveshaft spline socket to get...
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    '93 v4 crossflow hoisting strap routing?

    I have a '93, 115hp v4 crossflow, which does not have a hook eye on top, like my older v4 crossflows. IIRC, the factory service manual has a suggested routing for hoisting straps. The trouble is, I'm at my folks house, where I keep the motor, and the manual is at my house, so I can't access...
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    can i assume my expensive, new OMC fuel line is alcohol resistant?

    I bought an expensive new fuel hose/bulb/fittings, factory OMC, yellow 3/8". I bought it brand new from the OMC dealer last month. I bought it ASSuming that since it's brand new, OMC will have thought to keep up with the times and make it alcohol resistant. It feels rubbery like ordinaryold...
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    pros and cons of hydraulic steering on 17' salt water Boston Whaler?

    just guessing here, but are hydraulic steering systems better in the salt water environment than teleflex cables, which eventually freeze up? what are the pros and cons? -peter
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    who owns ranger boats now?

    I looked on wikipedia and did a little google searching and the latest info is a year old, when a california private investment company bought ranger from genmar. they in turn were supposed to sell it for a profit. anyone know the latest? -peter
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    v4 x-flow bubbleback fuel lines/fittings

    All three of my v4 crossflows are "bubblebacks". I did not purchase any of them brand new, and they all have 3/8" fuel lines and fittings put there by previous owners. Yet as far as I can tell, they came with 5/16" fuel line/fitting systems. A couple of my aftermarket 3/8" primer bulb/fuel...
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    v4 crossflow overheat protection logic?

    for the short version, see the italicized paragraph below near the bottom. for the long version, read on :) even though i have three v4 crossflows, and the factory service manual for each one, i do not have the operators manuals for any of them, so... ... anyway regarding the one i'm...
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    v4 Xflow removing PROP shaft

    got the bearing carrier and huge mofo snap rings and first gearset out, but not the DRIVEshaft. the PROPshaft is still not coming out... it's not siezed, it's all nice and loose and wobbly with no bearing support, but it only pulls out about a quarter inch before it is stopped by something...
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    lower unit: budget truarc snap-ring plier solution?

    one member linked to this page in a different thread. but there are 11 different pliers listed on this page, and their respective lengths are not given for all of them, and for the ones that are, it's hard to say which lengths are adequate. looking for a VERY rare useage solution. thanks...
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    v4 xFlow mains partially clogged? how do you drain the carbs?

    short version: '77 115 starts and idles fine, won't rev past about 1800 rpm under load. not overheating since warning and overheat system and buzzer test good. my latest v4 crossflow hadn't been run since early summer, 2009 when the previous owner discovered cars and got a girlfriend and...
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    warning buzzer, 3-pole replacement, cheap source

    going through a boat i bought after only a cursory inspection. one of the things i go to check is the overheat warning buzzer, so i do the usual... i jumper from the brown wire coming out of the sensor in the head, to the hot positive lug on the solenoid... and all i get is a weak chirp...
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    v4 crossflow head temps with infra red gun

    just going through this engine i bought before i put her into service. pretty much doing the "awakening a sleeping outboard" in the FAQ here. the motor is a '78 or newer v4 crossflow. the reason i don't know for sure, is it was cobbled together by a performance shop somewhere in the...
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    NONE of my LED trailer lights work?

    Any tricks to LED trailer lights? I just bought a nice used boat, with a very nice, used trailer that has LED lighting. When I plugged it into my tow vehicle's flat connector, not a _single_ light lit up. Is there some kind of ballast, or voltage conditioner for LED lights, or most likely a...
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    '93 v4 crossflow factory service manual?

    i tried looking right here on iboats for the factory manual, and all i can come up with is seloc. weird, i was able to get the licensed copies of the originals from right here on iboats for my old big twin: rds21b, '59 super seahorse 35hp. now i've got this immaculate "new" 1993 v4 crossflow...
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