69 Mercury 1000-Reasonable Performance?

NJCinMN

Petty Officer 3rd Class
Joined
Jun 4, 2008
Messages
86
I've gotten to know quite a bit about old Mercury inlines in the last month and I've really taken a liking to them. I like the simplicity. Anyway I've been in boats all my life but I'm very new to owning one. So here's the question, does my performance seem reasonable? I'm good in the rpm range of 4800-5300 and getting 35 mph at WOT and get on plane fairly quick.

Info:
-1969 16.5' Glasstron v-163 gross weight 700 lbs (doesn't seem to be water logged but might be a little- it's 40 years old)
-1969 Mercury 1000 (believe boat and motor to be original combo, height and setup seem to be good, anti-cavitation plate slightly above bottom of boat)
-3 blade aluminum prop, 17 pitch
-load: myself and friend averaging about 190 lbs each, 6 gallons of gas, some other misc. stuff but nothing too heavy

-Tuning:
-checked compression and is good
-drained lower unit and put in new lube (dark but no metal or milk)
-new fuel line and primer bulb
-rebuilt both fuel pumps with new check valves
-rebuilt all 3 carbs all new parts (floats, needle, seats, etc.)
-changed all 6 plugs, all have good spark
-did the link and sync and adjusted idle screws

The motor starts right up, idles great, and runs great overall. I just thought it would have a little more pep. At this point I guess it is what it is. I did a decarb but haven't been back to the lake. Maybe that'll be the difference.

Thanks for any thoughts or comments.
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: 69 Mercury 1000-Reasonable Performance?

100hp 16 ft glastron, if hull is dry should hit close to 45mph. are you using the speedo or a gps for speed. the speedo's are not accurate. the are off more the faster you go.
 

NJCinMN

Petty Officer 3rd Class
Joined
Jun 4, 2008
Messages
86
Re: 69 Mercury 1000-Reasonable Performance?

That is on the speedo and god knows that's probably as old as the boat. However, it felt about 35 mph. It seems to me 45 mph would feel pretty fast and we were moving but not to the point where I thought wow this is really fast. I'm going to borrow a friend's GPS to verify. 45 mph is kind of what I was expecting/hoping for. Thanks for the info.
 
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