6-8 Oz. per minute isn't much to perceive in a bilge. I lloked up the history of Chaparral and they did move from a boat building start in Florida to Georgia. Loved the comment on their workers. Chaps are a good looking, fast boat but only skin deep. If you have been on their forum it's a nightmare with what's been found and it's censored so only some of it gets through.

Nothing on my boat is installed straight. The latches for the head door and wind block are off, the anchor locker is installed crooked (high on port side), the padding on the outside of the head door runs downhill, 2 of the 4 speakers are crooked, motor mounts lagged into stringer blocks crooked, adhesive spilled all over the diamond non-skid on cockpit floor, etc. No attention to detail payed when assembling the boat. But nothing has fallen apart and I have 400 hours on the boat, many of those hours on LOTO.

I had a small leak i could not find too. afer amny many times looking, finally found it.

The cable that goes through the hull, to the trim tab/Kplane. if goes through the mounted bracket on the transom. it comes out int he middle of a nut kinda thing that has a rubber grommet inside it. this was letting a little water trickel in, and run down the back side of the transom, ever so slightly.

I Googled a picture of the tabs I have, and you can see the cable for the indicator in it (there is 2 hose fittings, one on top and one on bottom, and the cable i am talking about is in the middle.). I back out the nut thing, and moved the rubber grommet around some, re seating it, and now no more leaks.


anyway worth a shot looking there

http://newimages.yachtworld.com/1/7/...1770885_28.jpg

Forgot that this was a Gen two....the two lower bolts are within the big seal. I guess too much time standing on my head for this one !
The Oversized hole was for the bonding bolt on the hull drain flange. That is my next step since it is hard to see and would be below the water in the bilge.Also setting up a test for the "Y"

Apoligize, i got so mucked up with others comments that i forgot that mine was a Gen ll. Yes the lower two bolts on the Gimbal no longer are the anode cap bolt with a seal. Mark it off !
Snuggled up next to the motor (no small trick) and dryed the bilge, hand dry.Blocked off the forward limber channel and lowered the boat into the water. I watched with a flashlight to see any reflection from water. None ! I then felt the hull drain plug opening and it remained dry. I could also feel the bonding thru bolt and it waas dry. That's after an hour and a half. I could feel under the inner transom plate and it was dry. Swim platform lower support bolts...dry. The transom area is dry. so I am changing my direction of thought. Originally I inspected the outside of the hull looking for anything obvious and noted all thru hulls. They were then checked on the inside. I will now goback to the inspecting the hull closer for a crack.
Please don't tell me that your boat doesn't leak, that doesn't help. I have had 6 boats and none of them leaked either but Go on the Chaparral forum and read about boats built on Mondays and Fridays. Doesn't seem to be an exception.

Tilt drive up/down, left/ right to check bellows

Do you have any waters streaks/stains that may point you in a direction?

When you checked the thru-hulls, especially the cockpit scupper thru-hulls that if they are positioned as mine are sit half submerged when in the water, did you check them with the boat sitting in the water? And again, are the rubber flaps in place to keep the majority of water out of the thru-hulls when floating/sitting on anchor? If nothing appears to be leaking at the transom, that would be my next area of investigation. Here is a pic I took of my boat after having some of the emblem letters fall off. You can see the fitting I'm talking about in the pic. I wouldn't suspect the thru-hull seal itself as much as water backing up into the opening past the flapper and then leaking at the hose connection to the cockpit scupper.

Edit: New letters installed!

Second inspection of the hull revealed a suspicious spot right on a forward lift bunk. Reposioned the bunks in front to get a better view and found a 6" damaged corner of the front strake. The gel coat was chipped and inspection of the area shows raw glass and no impregnation of resin. This area is a 90 and needs special attention when being laid up. I have seen the same problem on my "Extended swim Platform". It has a hollow area where it Popped !
I cleaned and sealed the area with two layers, progressively larger plastic and duct tape for a test. Three hours later and no water ! Bad news is that it is under the liner for the Head !

Good news is it may be an easy way to drain the head!

Even though it would obviously be better to have access to backside of bad spot. I would think a good glass guy could do repair from outside if necessary. At least you found the leak