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Author Topic:   Lower end problems 90hp Johnson
ratherwhalering posted 12-19-2001 07:01 PM ET (US)   Profile for ratherwhalering   Send Email to ratherwhalering  
While smack dab in the middle of a gentle turn, my 1987 Johnson V-4 seemed to slip into neutral. No forward or reverse. After a tow, and haulout, the prop shaft spins freely in neutral. There is slight resistance in gear. The linkage from the console to the lower end is intact and working. No grinding, no clicks, just free movement. (The prop's rubber gasket is intact.) Even at in gear idle, no prop shaft movement, and no weird noises. Its a new prop (6 mos.) and there isn't anything that would indicate I hit a submerged object. Has anyone seen this before? I'd like to get some input, and know perhaps what to expect, before I rip apart the lower end!
JohnAz posted 12-19-2001 11:13 PM ET (US)     Profile for JohnAz  Send Email to JohnAz     
check the linkage from the power head down to the lower unit especialy under the carbs where it disconects,,
whalerron posted 12-19-2001 11:42 PM ET (US)     Profile for whalerron  Send Email to whalerron     
Doesn't that motor use a hydraulic shifter in the lower unit? If the shift rod has not come disconnected under the power head, I wonder if maybe the hydraulic shifter has failed. I heard that if the wrong lube is used in the lower units with those hydraulic shifters, the shifters will fail.
Bigshot posted 12-20-2001 11:25 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Standard lower. Make sure the prop hub is good. Try another if you can. If not you might have blown the drive shaft. They are prone to snapping just above the waterpump. They are 2 piece and they snap where welded together. You can have it welded if that is it. Drop the foot and take a look. rarity that no bang or anything else so I doubt gears. Driveshaft or prop for starters.
ratherwhalering posted 12-20-2001 01:38 PM ET (US)     Profile for ratherwhalering  Send Email to ratherwhalering     
Bigshot is correct. The driveshaft sheered just above the water pump. I spoke with my mechanic and he said it was about $750.00 in parts, and $500.00 for labor, to replace.

Can these really be welded? That would be the BEST solution, since replacement would exceed the engine value. I am planning to repower with a 4-stroke eventually, but it would be nice to get a few more years from that johnson. The compression is steady at 120 per cylinder, and I worked out some idling bugs. It runs like a top, it just won't go anywhere!

ratherwhalering posted 12-20-2001 01:43 PM ET (US)     Profile for ratherwhalering  Send Email to ratherwhalering     
Opps, compression is at 130, I meant.
Bigshot posted 12-20-2001 01:47 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
I think it costs about $300+ to weld them but you have to remove it first so not much more in savings($350). Look around for a used foot for about $500?. I know someone who might have one if you are interested. it would be a rebuilt, not some used junker. Give him a call Henry @ Stingray Marine 941-722-1244. He is leaving for NY tomorrow so don't wait. I am just guestimating on price but he is WAY fair.
gunnelgrabber posted 12-20-2001 02:03 PM ET (US)     Profile for gunnelgrabber  Send Email to gunnelgrabber     
ratherwhalering,.. got the whole deal laying in my barn,'89 evinrude bottom end...but alas,you're in california!...good luck...lm
ratherwhalering posted 12-20-2001 02:06 PM ET (US)     Profile for ratherwhalering  Send Email to ratherwhalering     
Well that just made my day...Thanks Nick! Problem solved. Now I get to give the bad (good) news to my Mechanic.
Bigshot posted 12-20-2001 02:23 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Did he have one.
ratherwhalering posted 12-20-2001 02:24 PM ET (US)     Profile for ratherwhalering  Send Email to ratherwhalering     
Yes, he did. A great price too!
simonmeridew posted 12-20-2001 07:59 PM ET (US)     Profile for simonmeridew  Send Email to simonmeridew     
Don't forget the opportunity to put in a new water pump etc while it's apart.
Merry Christmas and Happy New Year
simonmeridew
Bigshot posted 12-21-2001 10:49 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
She should have a new pump unless he tells you otherwise. I know what you paid, very nice x-mas gift. It needs a good sand & paint but she will work great.
Macman posted 12-21-2001 02:46 PM ET (US)     Profile for Macman  Send Email to Macman     
Bigshot....nice save! Diagnosed the problem, and created the solution. If you are that good at financial planning, my money should be with you. What little I have, that is!
Bigshot posted 12-24-2001 09:43 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
That's why I am here:)

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