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Author Topic: CV16SS 140 rebuild  (Read 18701 times)

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Offline Jason

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  • 1974 CV16SS, 1986 CV23
CV16SS 140 rebuild
« on: July 20, 2015, 12:10:09 PM »
I pulled the 140 from the CV16SS last fall. Finally got it to Sampson Racing Engines for a full rebuild.

Work will include a full rebuild. Actually will end up similar to Brandon's 140 with the newer style flat top pistons. Will also have a hotter cam, stiffer valve springs, performance machining to valves and seats, Entire rotating assembly along with flywheel will be balanced, ARP bolts, hone, hone align, decking, resurfacing, new oil pump, new timing set, tapped crank to hold front pulley on better than the factory press fit, ect.

Head was magnafluxed. No cracks!

Also upgrading to the Delco Voyager ignition system (no petronix for me!)
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Jason S.
1974 Glastron Carlson CV16SS 140 I/O
1986 Glastron Carlson CV23 260 I/O

Offline 75starflight

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Re: CV16SS 140 rebuild
« Reply #1 on: July 20, 2015, 12:15:11 PM »
Very nice Jason. A little more than I had done, I went back with a stock cam shaft. I will be interesting to see what kind of numbers you put up once it is done!

Edit, I got rid of the pertronix and went back to points and condenser. I also want to play with my timing and go from 4 degrees BTDC to 2 degrees BTDC. I think she has more to give on the top end.
« Last Edit: July 20, 2015, 12:18:33 PM by 75starflight »
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1975 v-179 starflite

Offline thedeuceman

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Re: CV16SS 140 rebuild
« Reply #2 on: July 20, 2015, 12:16:12 PM »
That will be an awesome running machine when its done.
Ha...
the twins are gonna have to wrestle to see who get to drive first.
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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 Jason

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Re: CV16SS 140 rebuild
« Reply #3 on: July 20, 2015, 12:24:41 PM »
I picked up a used voyager system used with all the wiring, coil, ect to plug it right in. Price is not bad.

Really won't be too much left of the original motor other than the block, head, and crank.
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Jason S.
1974 Glastron Carlson CV16SS 140 I/O
1986 Glastron Carlson CV23 260 I/O

Offline 75starflight

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Re: CV16SS 140 rebuild
« Reply #4 on: July 20, 2015, 12:54:18 PM »
Quote from: Jason on July 20, 2015, 12:24:41 PM
I picked up a used voyager system used with all the wiring, coil, ect to plug it right in. Price is not bad.



That is a good system! I want to put one in phoenix eventually, but it is going to have to wait until the CVZ is done.
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1975 v-179 starflite

Offline Shorty

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Re: CV16SS 140 rebuild
« Reply #5 on: July 20, 2015, 05:34:36 PM »
Nice man! That's gonna be a healthy rig!

I love your CV man. Has to be the cleanest CV I've seen. And that green is insane... pops so great on that boat.
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Offline David CVX-16

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Re: CV16SS 140 rebuild
« Reply #6 on: July 20, 2015, 09:16:06 PM »
Will the CV16SS be done in time for the Glastron meet, and which boat are you bringing?
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David
87' CVX-16, 85' 115 HP Johnson, 58.8 MPH GPS w/ 23" SRX Prop

Offline Jason

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Re: CV16SS 140 rebuild
« Reply #7 on: July 21, 2015, 06:29:20 AM »
Won't be done for Red Wing. Bringing the CV23.
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Jason S.
1974 Glastron Carlson CV16SS 140 I/O
1986 Glastron Carlson CV23 260 I/O

Offline Hyperacme

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Re: CV16SS 140 rebuild
« Reply #8 on: July 21, 2015, 08:35:16 AM »
Had to Google " Delco Voyager ".
Thought you were getting another derby van ... LOL

Are we lookin' at another Pickle rocket ?
I love the old school look of the CV's ... and even more with modern power !
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Offline David CVX-16

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Re: CV16SS 140 rebuild
« Reply #9 on: July 21, 2015, 12:12:48 PM »
Any goal for MPH with the increased horsepower?
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David
87' CVX-16, 85' 115 HP Johnson, 58.8 MPH GPS w/ 23" SRX Prop

Offline Jason

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Re: CV16SS 140 rebuild
« Reply #10 on: July 21, 2015, 12:41:28 PM »
Quote from: David CVX-16 on July 21, 2015, 12:12:48 PM
Any goal for MPH with the increased horsepower?

I don't expect too much as it takes a lot of power to go a little faster but If I can hit 50 i'd be really happy!
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Jason S.
1974 Glastron Carlson CV16SS 140 I/O
1986 Glastron Carlson CV23 260 I/O

Offline Plugcheck

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Re: CV16SS 140 rebuild
« Reply #11 on: July 21, 2015, 01:00:03 PM »
FYI, my 1980 16SS hit mid 40's with ideal conditions.  Great boat, decent mileage, reliable once I got the bugs worked out.  Wanted faster so cvz was next.  Maybe yours will hit 50 with a fresh powerplant.
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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 75starflight

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Re: CV16SS 140 rebuild
« Reply #12 on: July 21, 2015, 01:08:56 PM »
Quote from: Jason on July 21, 2015, 12:41:28 PM
Quote from: David CVX-16 on July 21, 2015, 12:12:48 PM
Any goal for MPH with the increased horsepower?

I don't expect too much as it takes a lot of power to go a little faster but If I can hit 50 i'd be really happy!

Well, with the fresh rebuild on Phoenix's 140 we were able to achieve 48 mph on the gps a couple of times. So 50 mph is not out of the realm for your 16ss
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1975 v-179 starflite

Offline Jason

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Re: CV16SS 140 rebuild
« Reply #13 on: July 21, 2015, 02:34:06 PM »
With the old motor my top end was 46.8
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Jason S.
1974 Glastron Carlson CV16SS 140 I/O
1986 Glastron Carlson CV23 260 I/O

Offline 75starflight

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Re: CV16SS 140 rebuild
« Reply #14 on: July 21, 2015, 02:58:09 PM »
Quote from: Jason on July 21, 2015, 02:34:06 PM
With the old motor my top end was 46.8

with my old 120 my top end was 43

46.8 wow! Yep 50 should definitely be reachable. 50 mph is still my goal with phoenix, but with her first time on the water being at the meet, well, I will be going easy on her. I want to keep her happy after the way last season ended. I am very nervous!
« Last Edit: July 21, 2015, 03:02:58 PM by 75starflight »
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1975 v-179 starflite

Offline Hyperacme

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Re: CV16SS 140 rebuild
« Reply #15 on: July 21, 2015, 03:26:41 PM »
I though your old motor was closer to 50 mph then that ?

As per the Price and Spec sheets, CV is 275 lbs. lighter then the V-179 with the 140 HP Mercruiser ...

CV
boat = 775 lbs.
motor = 675 lbs.

V-179
boat = 1050 lbs.
motor = 675 lbs.
« Last Edit: July 21, 2015, 03:59:52 PM by Hyperacme »
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Offline Jason

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Re: CV16SS 140 rebuild
« Reply #16 on: July 21, 2015, 09:22:42 PM »
My old prop testing results are posted here:
http://forum.cgoamn.com/index.php?topic=806.msg7016#msg7016

Maybe she needed a rebuild a long time ago. I've been thinking about putting the rebuilt motor on the dyno to really dial it in.
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Jason S.
1974 Glastron Carlson CV16SS 140 I/O
1986 Glastron Carlson CV23 260 I/O

Offline 75starflight

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Re: CV16SS 140 rebuild
« Reply #17 on: July 21, 2015, 10:07:16 PM »
Quote from: Jason on July 21, 2015, 09:22:42 PM
My old prop testing results are posted here:
http://forum.cgoamn.com/index.php?topic=806.msg7016#msg7016

Maybe she needed a rebuild a long time ago. I've been thinking about putting the rebuilt motor on the dyno to really dial it in.

I did all my tuning in Phoenix, but I also have an open engine compartment. A dyno would have been nice, a controlled environment to test different options is a big plus. You would be able to see if there is a power difference between the points distributor and the delco Voyager system.
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1975 v-179 starflite

Offline Jason

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Re: CV16SS 140 rebuild
« Reply #18 on: July 27, 2015, 08:52:30 PM »
Got some updated pics. He's giving me the "homie hookup" on the heads. He wants to get as much power as possible on this little 140.
« Last Edit: July 30, 2015, 12:41:55 PM by Jason »
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Jason S.
1974 Glastron Carlson CV16SS 140 I/O
1986 Glastron Carlson CV23 260 I/O

Offline 75starflight

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Re: CV16SS 140 rebuild
« Reply #19 on: July 27, 2015, 10:32:05 PM »
That work on the head looks like it will flow nice.
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1975 v-179 starflite
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