|
|
#11
|
|||
|
|||
Forgot to add 1988 puts you square in alpha one generation one category but you never know what someone may have bolted on over the years. External clues are the flat top on the upper gearcase, and a squared off cavitation plate on the lower versus a rounded one. Funky drives are the lowers from 83-somewhere in 85 they will have the newer case with a square cav plate but the earlier internals, smaller shaft and a preload pin. Like Spare said you really won't know what you have until you open it up. Count your teeth in the upper gearset I have seen some 5.0 come with 1:5:1 ratios too.
Brian 
|
|
#13
04-09-2011, 08:26 AM
|
|||
|
|||
|
I must say I appriciate the help. Most boards call the newbee nasty names when they are doing something a little different.
By the looks of things, I will for sure need to do something with this outdrive. I surmise it may not last long.
|
|
#14
04-30-2011, 12:37 AM
|
|||
|
|||
|
Ok, fired the engine up this evening....well, sounds healthy. Going to spark limit it to 4800rpm to possibly 5200rpm, untill I can figure out the drive situation. My biggest fear is the thing pulling up from the hull. I have it strapped down, just in case something goes horribly wrong. Man alive, this thing should be in a car
 (The gentleman has a really nice 88 7 series BMW I did for him, and keep telling him he should let me put it in that.....lol) Possibly a different drive unit altogether? What does it take to be able to reliably spin an out drive to 6500rpm? What fails? Bearings, or gears? Jet drive possibly? Or am I just off my rocker, and keep it dialed way down? (hm...way, way down)
|
|
#17
05-07-2011, 08:32 AM
|
|||
|
|||
|
Wowser, we took it out last sunday for a shake down run. Well, its fast, and gets on plane in the blink of an eye. The new holley carb did have a stuck float, so called it a day. Got the new digital ignition in this week, and will be heading out again tommorow to finish the engine up. Then on to the outdrive........ this 383 seems to have been a good choice.
I was going to post pics of the build, and runs but dont seem to be able too yet.
|
|
#18
05-07-2011, 04:55 PM
|
||||
|
||||
|
The drives don't like more than about 5500 rpm, you can upgrade the lower end by replacing the shift pin with an outboard style(hi performance) screw in shift pin(you'll have to dissasemble the lower). Thats the first thing to go boom. I'd run a twin drive shower to keep the upper cool, and add an external resivoir for the gear lube, bigger the resevoir, the better. I'd also recomend running merc high performance gear lube(its made by bellray), its good stuff, its like climbing lube
|
|
#19
06-04-2011, 09:40 PM
|
|||
|
|||
|
Just to give you guys an update if you like...
Ok, a decent 383, msd digital ignition, bravo 1 24p 4 blade prop. Shower head, extra oil res. in the outdrive. Putting a temp gauge in this week. Max rpm 5200. I did turn it to 5500rpm just to see. Its fast. Pulls a skier like no ones business, and cruises at around 25-30mph at what a I thought was a very nice 2900-3400rpm range. It has a safety switch on it, that keeps it at 4000rpm or below. You need to lift the switch and flip it, to take it to 5200rpm. I think the boat could actually use a larger pitch prop.
|
|
#20
06-06-2011, 10:59 AM
|
||||
|
||||
|
Post up some pictures man..
|
 |
|
|
Linear Mode
