Author Topic: '86 CVX 18 Re-assembly  (Read 18692 times)

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Offline Plugcheck

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Re: '86 CVX 18 Re-assembly
« Reply #20 on: April 13, 2017, 09:31:03 AM »
      Not certain I would recommend sandblasting a sensor, their skin is rather thin.  Maybe try some CLR and a little effort with a scotchbrite pad first.   As for the cast parts, muratic acid and a little paint will make them look brand new, but take care and follow the directions, its kinda nasty stuff. 
Michael
1979 CVZ-18 388 CI Vortec Mouse
1980 CVX-16SS 140 Mercruiser
1979 CVX-16 Johnson 175
2002 Bennington 2275CC 90 Mercury
1985 Intimidator project
1989 Lowe 200 Redneck fishin Toon
2001 Godfrey Sweetwater pontoon 115 Rude

Offline ScottsCVX

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Re: '86 CVX 18 Re-assembly
« Reply #21 on: April 13, 2017, 11:19:17 AM »
My thought was to remove the sensors before any cleanup started so they would be safe.  If I were to blast it clean, I think using beads or walnut shells would be preferable to sand, since its less aggressive on the casting.  I would also avoid any of the machined gasket surfaces.  I will look into some other non-abrasive cleaning options.
Scott
87 CV 23
79 CV 23
86 CVX 18
84 CVX 16 120hp Johnson
74 GT-160 120hp Mariner

Offline Plugcheck

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Re: '86 CVX 18 Re-assembly
« Reply #22 on: April 13, 2017, 03:51:20 PM »
     Maybe I'm misunderstood, but any of the cast iron parts, using muriatic acid will clean them out like new, really kinda impressive.  Doesn't bother the machined surfaces, and when it stops bubbling, the part is likely done.  I've heard of block cleaners if you feel the block, pump, intake, or heads has some gunk in it, but I've not used any before.  I have, however, had numerous marine engines apart and found water jackets packed with sand.  Seems to get in there and then gets baked almost like a ceramic.  As for my active boats, I flush them after every use to clean out.   
Michael
1979 CVZ-18 388 CI Vortec Mouse
1980 CVX-16SS 140 Mercruiser
1979 CVX-16 Johnson 175
2002 Bennington 2275CC 90 Mercury
1985 Intimidator project
1989 Lowe 200 Redneck fishin Toon
2001 Godfrey Sweetwater pontoon 115 Rude

Offline ScottsCVX

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Re: '86 CVX 18 Re-assembly
« Reply #23 on: April 15, 2017, 07:54:49 AM »
I decided on the electrolysis method for removing the rust. There are plenty of videos on how it's done, but I treated the thermostat housing for 24 hours and it turned out pretty nice. My bigger problem though is with the temp sender I broke off flush to the housing. The brass sleeve that surrounds the sensor is still in the hole. I tried using a couple styles of pipe extractors, but the extractors couldn't grip the soft brass enough to remove it. I believe my only option at this point is to drill it out and install a heli-coil. I ordered a new sender, so once I get the hole repaired I should be good to re-assemble the cooling system.


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Scott
87 CV 23
79 CV 23
86 CVX 18
84 CVX 16 120hp Johnson
74 GT-160 120hp Mariner

Offline thedeuceman

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Re: '86 CVX 18 Re-assembly
« Reply #24 on: April 15, 2017, 08:24:21 AM »
Yeah the brass tends to expand too much into the threads when you use an extractor, I would drill it out until you just start touching the tips of the threads then you should be able to pick the brass pieces out of the threads and clean it up with a tap


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Joe
75 GT150 "SeaDeuced"... Its Back !!
92 16CSS "Attitude Adjustment" is for sale
75 CV-16V8, Project
74 CV-16... its Purple !

Offline ScottsCVX

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Re: '86 CVX 18 Re-assembly
« Reply #25 on: April 15, 2017, 09:06:53 AM »
I'll try that first. The more I think about a heli-coil into a water passage, I may introduce a leak between the insert and base material. Teflon tape around the bolt wouldn't help.


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Scott
87 CV 23
79 CV 23
86 CVX 18
84 CVX 16 120hp Johnson
74 GT-160 120hp Mariner

Offline ScottsCVX

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Re: '86 CVX 18 Re-assembly
« Reply #26 on: April 18, 2017, 01:47:11 PM »
Well, After a couple hours of trying to extract the brass sleeve, it looks like I'll need to locate a replacement thermostat housing.  The brass is simply to deep into the threads.  Anyone have a housing they're looking to sell? The Mercury part number is 16413.  I've included a picture of mine.

 
Scott
87 CV 23
79 CV 23
86 CVX 18
84 CVX 16 120hp Johnson
74 GT-160 120hp Mariner

Offline 75starflight

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Re: '86 CVX 18 Re-assembly
« Reply #27 on: April 18, 2017, 02:04:53 PM »
i may have one at home i purchased for my cvz project but i will not need it when the time comes for an engine. I will  check when I get home from work this evening and make sure it is what you are needing.
1975 v-179 starflite

Offline Plugcheck

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Re: '86 CVX 18 Re-assembly
« Reply #28 on: April 18, 2017, 02:11:13 PM »
I would ask a local machine shop, likely they can clear and Chase the threads for little cost.  Unless of course someone was willing  to donate the part.
Michael
1979 CVZ-18 388 CI Vortec Mouse
1980 CVX-16SS 140 Mercruiser
1979 CVX-16 Johnson 175
2002 Bennington 2275CC 90 Mercury
1985 Intimidator project
1989 Lowe 200 Redneck fishin Toon
2001 Godfrey Sweetwater pontoon 115 Rude

Offline thedeuceman

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'86 CVX 18 Re-assembly
« Reply #29 on: April 18, 2017, 03:12:38 PM »
I have big drillbits and pipe taps, I'll bet we could get it out, I'm in North St. Paul


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Joe
75 GT150 "SeaDeuced"... Its Back !!
92 16CSS "Attitude Adjustment" is for sale
75 CV-16V8, Project
74 CV-16... its Purple !

Offline Retro Performance

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Re: '86 CVX 18 Re-assembly
« Reply #30 on: April 19, 2017, 05:44:07 AM »
It looks like the original part became not available in 1999, Mercruiser does have a replacement kit that is still available it looks like.  I found a dealer, Leroy Harbor Resort in Canada that shows having one 16413A9 in stock (original part new old stock). They are at 705-456-2120...........

Offline Retro Performance

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Re: '86 CVX 18 Re-assembly
« Reply #31 on: April 19, 2017, 05:53:30 AM »
Hmmm I can't seem to get that page in the right place so it does not cut off words? must be something wrong with the computer I think. At least it is not upside down this time.

Offline 75starflight

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Re: '86 CVX 18 Re-assembly
« Reply #32 on: April 19, 2017, 07:27:38 AM »
Sorry my thermostat housing is different.
1975 v-179 starflite

Offline Plugcheck

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Re: '86 CVX 18 Re-assembly
« Reply #33 on: April 19, 2017, 12:24:06 PM »
Best idea yet was the offer from Joe, if he can't fix it you'll need a new one.  Im betting the service charge for the fix would be a certain quantity of a local craft brew.
Michael
1979 CVZ-18 388 CI Vortec Mouse
1980 CVX-16SS 140 Mercruiser
1979 CVX-16 Johnson 175
2002 Bennington 2275CC 90 Mercury
1985 Intimidator project
1989 Lowe 200 Redneck fishin Toon
2001 Godfrey Sweetwater pontoon 115 Rude

Offline ScottsCVX

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Re: '86 CVX 18 Re-assembly
« Reply #34 on: April 20, 2017, 09:56:17 PM »
Joe worked a miracle in about 30 min to remove the brass and clean out the threads. I'll give the housing a coat of paint, a new temp sender and it will be good to go. I tested the other sender and it seems to be in working order.

Thanks again Joe



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Scott
87 CV 23
79 CV 23
86 CVX 18
84 CVX 16 120hp Johnson
74 GT-160 120hp Mariner

Offline Jason

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  • 1974 CV16SS, 1986 CV23
Re: '86 CVX 18 Re-assembly
« Reply #35 on: April 21, 2017, 12:10:35 PM »
Joe is definitely the "miracle man".
Jason S.
1974 Glastron Carlson CV16SS 140 I/O
1986 Glastron Carlson CV23 260 I/O

Offline ScottsCVX

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Re: '86 CVX 18 Re-assembly
« Reply #36 on: April 30, 2017, 01:27:39 PM »
I'm working on the carpet install but I'm having a bit of hesitation about how to tackle the seat risers on the floor. They shaped like pyramid with a flat top. Any thoughts/ideas on how to cover these?  I could cut the carpet around the bases and then piece in the pyramids sides or just leave them exposed.   


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Scott
87 CV 23
79 CV 23
86 CVX 18
84 CVX 16 120hp Johnson
74 GT-160 120hp Mariner

Offline ScottsCVX

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Re: '86 CVX 18 Re-assembly
« Reply #37 on: April 30, 2017, 01:40:13 PM »
Here is view of both seat risers


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Scott
87 CV 23
79 CV 23
86 CVX 18
84 CVX 16 120hp Johnson
74 GT-160 120hp Mariner

Offline CVX Fever

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Re: '86 CVX 18 Re-assembly
« Reply #38 on: April 30, 2017, 03:32:46 PM »
If it was my boat I'd just cut around them nicely. I think that would look better than trying to carpet them. With the seats in my CVX18, once they were mounted you wouldn't be able to hardly see the bases anyways. Not sure if that's the case with yours.
1979 CVX18 "Back in Black"....someday!
1985 CVX18 " Only thing better than 2 CVX18's is 2 girlfriends!

Offline Retro Performance

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Re: '86 CVX 18 Re-assembly
« Reply #39 on: April 30, 2017, 04:12:06 PM »
What color is the carpet?  What color are the seats? I think I would leave them in gel if it were mine.........think I would leave them white gel and maybe "spatter"them with colored gel to match something.