1987 Looper v4 140 RPM only 4000

[Skools Out]

i'll measure mine tomorrow i have several rods on the shelf.

[THEFERMANATOR]

Originally Posted by Skools Out

not 30" Ferm the measurment i gave above is straight out of the OMC Shop Manual. your 25" isn't 30" the shift rod in a 25" motor is only 26 15/16 "in length installed.

I'm refferring to total rod length, not length installed. I put this one out there since he thinks his is to long so he could see if it was close. I know the 21 15/16" is the spec for a 20", I was just giving him the actual rod measurement so he could see if his was actually right. I'm willing to bet it is locked in neutral because he has the rod screwed in to far. I know thinking about it makes no sense, but with the geometry effect it happens.

[Skools Out]

yeah if he screwed it in too far it will lock it into neutral. crazy but you canturn them with it installed. just turn shifter up and the rod down then rotate with needle nose pliers. easy to adjust when it's only in need of one turn. or the shift cable could need adjustings too. when you change lower units it will need slight twiking.

[nymack66]

I broke the rod , I now have to buy a new one , One problem after another

[THEFERMANATOR]

Originally Posted by nymack66

I broke the rod , I now have to buy a new one , One problem after another

How did that happen? They are pretty hefty pieces of stainless to break.

[nymack66]

From what I can see it was welded and painted over a long time ago, I measure the broken rod it is exactly 30 " long on the workbench , I will order a new one tomorrow

[THEFERMANATOR]

The part number is 333005 and should cost you $63.34 for a new one. I only have 25" model ones in the shop right now. Maybe a member here has a 20".

[nymack66]

Yes ! My shift rod is here , I will install it this weekend , I however measure it up to the broken rod I was having issues with in regards to the length , It is indeed 1/4 of inch shorter , So as I assumed the v6 large gear case was too long, however it snapped and the new replacement is here , Wish me luck !!
Hopefully it all works and my engine will increase its RPM to 5k plus

[THEFERMANATOR]

Just make certain to set the length on it right. If not you will DESTROY your lower unit. That shift shaft needs to be within 1 turn of the adjustment or else it will only partly engage the gear. If you hear any slippage or jumping when in gear, DO NOT RUN IT HARD! Ease it back to the ramp and find out why. This was a lesson learned the hard way for me. And start off with a 15 or 17 pitch prop. 5K+ shouldn't be an issue, but ideally on a small bore looper you want 5600-6000 with a moderate to heavy load at WOT.

[nymack66]

Shift rod and new seals installed , bolted up like a glove , Tested in driveway hooked up to the garden hose, Verify complete shift into gears both ways spun it in gear to complete stiring up the old oil then shut her down to do a lower oil change low and behold water in the oil all milky stuff drain it and flush her dry and clean , I expected this since when I remove the old shift rod I felt the rod loose and free i knew the o ring was bad hence the proactive move in ordering one with my new shift rod.
I did not test in the lake as yet!!
I did notice an increase of "driveway idle" increase from 1200 RPM to 2100 since I bolted up the new V4 gear case is this normal ? I am guessing the v4 is less torque to spin verses the v6 gear case that was remove?
Note the original 1200 rpm is driveway idle not in water it drops to approximately to 900 RPM shifted fine.
I am wondering if I drop it into the lake if the idle will drop to an acceptable rpm for shifting or should I plan on adjusting the RPM down ?