Also, I know you didn't ask, but IMO here are a few very beneficial add-ons / mods to the 52 (and other detroit boats).
Racor CCV System. I installed 4 x CCV4500. 1 per air filter. This helps the engine breathe cleaner by removing oil vapor and condensation from the ccv system. Our turbos went from greasy to dry and clean now. I'm sure the intercooler is thanking us as well.
Re-route airbox drain lines to an external cannister/catch can. Detroits accumulate condensation, oil, fuel, grimey crap in their air boxes. To meet emmissions standards they routed these drains back to the oil pan, which is terrible. Drain them to a container you can empty on a regular basis and keep your engines running cleaner.
AirSeps or Racor Air filters - If the boat has the old foam filters, a great upgrade is to Racor filters, but airseps are great too if the boat already has them (mine does).
Bypass Oil Filter - Detroits really like to soot up the oil. Is the primary reason the oil in a detroit is so BLACK so quickly. The bad part about this is soot is that it is very small in particle size and is basically like sandpaper. Soot is VERY abrasive. Do you want sandpaper running through your engine? We recently isntalled Frantz Triple Stacker bypass oil filters. The difference in the feel of the oil after 20ish hours was pretty incredible. Usually after the first trip you could begin to feel the soot if you rubbed your oily fingers together. Now, after 20 hours the oil is still smooth as silk. Soot buildup is the primary reason you need to change the oil so often on Detroits. Hopefully the bypass filters will allow us to safely extend oil change periods AND maintain a much healthier low soot oil.
Battery placement - I believe stock arrangement is one bank of 4 8v giant batterys port side of the port engine, and a second bank down the middle of the engine room walkway. Many have been moved by now. My port bank was moved aft of generator prior to me taking the boat. I'm sure there's a better place but it is what it is. Lotta lead to be housed somewhere.
That's all I got for now, i'm sure I'll think of some other stuff
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10-28-2019 01:48 PM #11Senior Member
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- Jul 2013
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Re: Any mid 80's 52C owners on the site?
SOUTHPAWS
1986 52C Hull #391 8v92TI
PENSACOLA, FL
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Re: Any mid 80's 52C owners on the site?
Here’s a freebie for Series 92 manuals. https://avtec.edu/sites/default/files/DDC%2092.pdf
Semper Siesta
Robert Clarkson
ASLAN, 1983 55C #343
Charleston, SC
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10-28-2019 03:49 PM #13Senior Member
- Join Date
- Apr 2005
- Posts
- 309
Re: Any mid 80's 52C owners on the site?
Two water tanks as stated, port access should be a hatch between your refrigerator and oven, starboard access is master stateroom (if queen equipped) behind return AC grill. You will need to remove bottom drawer of small cabinet to access fittings/gauge. Lifting bed mattress, removing drawer provides additional access. Holding tank is just before entering forward stateroom in companion way usually covered by carpet but occasionally hatch access has been provided. Have surveyor double check your Detroit’s as 650 hp was the most common engine for that vintage. Good Luck and Enjoy.
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Re: Any mid 80's 52C owners on the site?
"DON'T BELIEVE ANYTHING YOU READ OR HEAR AND ONLY HALF OF WHAT YOU SEE" - BEN FRANKLIN
Endless Summer
1967 50c 12/71n DDA 525hp
ex Miss Betsy
owners:
Howard P. Miller 1967-1974
Richard F Hull 1974-1976
Robert J. & R.Scott Smith 1976-present
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10-28-2019 09:08 PM #15Senior Member
- Join Date
- Jan 2018
- Posts
- 152
Re: Any mid 80's 52C owners on the site?
Thanks everyone
Yes galley down model
Has Racor ccv system/ air seps
Hp is 735
In Oxnard Ca not back east, easy to Find on YW
I only wish it was 99kLast edited by Blowncar; 10-29-2019 at 12:46 AM.
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10-29-2019 08:02 AM #16Senior Member
- Join Date
- Jan 2013
- Posts
- 219
Re: Any mid 80's 52C owners on the site?
FYI on HP. I have a 1984 52c and she has the 735HP version with dry turbo's.
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Re: Any mid 80's 52C owners on the site?
"DON'T BELIEVE ANYTHING YOU READ OR HEAR AND ONLY HALF OF WHAT YOU SEE" - BEN FRANKLIN
Endless Summer
1967 50c 12/71n DDA 525hp
ex Miss Betsy
owners:
Howard P. Miller 1967-1974
Richard F Hull 1974-1976
Robert J. & R.Scott Smith 1976-present
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10-29-2019 10:39 AM #18Senior Member
- Join Date
- Jul 2013
- Posts
- 1,188
Re: Any mid 80's 52C owners on the site?
Anybody know what injectors the high hp models used?
I've been told I'm at 600hp with 7125 injectors. I've also been told by other sources that the 7125 is a higher hp injector than 600 and that I'm closer to 700hp.SOUTHPAWS
1986 52C Hull #391 8v92TI
PENSACOLA, FL
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10-29-2019 11:14 AM #19Senior Member
- Join Date
- Jan 2013
- Posts
- 219
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Re: Any mid 80's 52C owners on the site?
"DON'T BELIEVE ANYTHING YOU READ OR HEAR AND ONLY HALF OF WHAT YOU SEE" - BEN FRANKLIN
Endless Summer
1967 50c 12/71n DDA 525hp
ex Miss Betsy
owners:
Howard P. Miller 1967-1974
Richard F Hull 1974-1976
Robert J. & R.Scott Smith 1976-present