Author Topic: Mercruiser 140 rebuild  (Read 47482 times)

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Offline 75starflight

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Re: Mercruiser 140 rebuild
« Reply #20 on: November 26, 2013, 11:12:50 AM »
I still have two rods/pistons left from the 140 I pulled out of my cvx16 if you need a rod. Did this with the other two...

Might want to save the remaining two before I desecrate them like the others ;)



Desecrate them! That is just too sweet! You should do one so the a mercruiser logo.
1975 v-179 starflite

Offline kert0307

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Re: Mercruiser 140 rebuild
« Reply #21 on: November 26, 2013, 12:46:08 PM »
hmm, i might be able to do something with this logo...




Anyway, good luck on the rebuild. If you need a rod let me know. I have a set from a Ford 300 laying around here too I'll make something out of eventually also so I will still have "parts" if I give you the 140 rods.

Offline Grinder

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Re: Mercruiser 140 rebuild
« Reply #22 on: November 27, 2013, 11:21:27 AM »
I think it would look better like this.  ;D
Shaun
86 CVX 18

Offline 75starflight

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Re: Mercruiser 140 rebuild
« Reply #23 on: December 16, 2013, 04:32:35 PM »
I have been doing a little research on parts for the 140, and since the mechanical distributor that was originally on it is no longer available i was doing a little research and found an update kit to convert over to the delco voyager distributor.

http://www.michiganmotorz.com/delco-voyager-marine-electronic-distributor-p-120.html

Just curious if anyone has installed one of these and how reliable they are. Also I am leaning this way because the replacement parts would be more available when I am out of state if I would start to have ignition problems.
1975 v-179 starflite

Offline Rich_V174SS

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Re: Mercruiser 140 rebuild
« Reply #24 on: December 16, 2013, 04:43:03 PM »
That should be a nice upgrade, all the newer 3.0 liter engines from Mercury/Mercruiser have been using that ignition system since the mid 90's. However you can find the older points-style Delco distributors on ebay cheap and just convert the points to Pertronix if you wanted to stay with the old school look. I think the cap and rotors for the newer system are less money than the older ones so going newer is more economical.
1967 V174 Crestflite SuperSport Modified
1987 Mercruiser 190 3.7LX/Alpha One

1970 V176 Swinger
1983 Mercury 115

Offline 75starflight

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Re: Mercruiser 140 rebuild
« Reply #25 on: January 06, 2014, 08:25:58 AM »
I got a call from the Machine shop this morning with some news on how the work is going. He said the block does have a crack in it but it is able to be repaired with out any issue. So I gave him the green light to fix it.

He also said that the crank shaft looks good so far. 
1975 v-179 starflite

Offline 75starflight

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Re: Mercruiser 140 rebuild
« Reply #26 on: January 07, 2014, 08:48:56 PM »
I have a question on drive couplers. The one that came on the 140 is the old style that is attached directly to the crank shaft with studs an nuts. If I have a 12 3/4" flywheel, couldn't I use a modern coupler that bolts directly to the flywheel? Like this one?

http://www.michiganmotorz.com/mercruiser-12%C3%82%C2%BE-engine-coupler-p-104.html

Or would their be an issue?
1975 v-179 starflite

Offline Rich_V174SS

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Re: Mercruiser 140 rebuild
« Reply #27 on: January 07, 2014, 09:13:28 PM »
If it will bolt up to the flywheel I don't see a reason why it wouldn't work but two things do come to mind - 1) will you have clearance between the flywheel and the bell housing and 2) is the drive shaft socket in the coupler at the right depth for the drive shaft to plug into? Why do you feel the need to change from what was originally used? I'm sure the original style coupler is still available if you need to replace it.
1967 V174 Crestflite SuperSport Modified
1987 Mercruiser 190 3.7LX/Alpha One

1970 V176 Swinger
1983 Mercury 115

Offline 75starflight

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Re: Mercruiser 140 rebuild
« Reply #28 on: January 08, 2014, 08:28:12 AM »
If it will bolt up to the flywheel I don't see a reason why it wouldn't work but two things do come to mind - 1) will you have clearance between the flywheel and the bell housing and 2) is the drive shaft socket in the coupler at the right depth for the drive shaft to plug into? Why do you feel the need to change from what was originally used? I'm sure the original style coupler is still available if you need to replace it.

I was actually hoping to avoid using the studs to mount the flywheel and coupler again. But you do have a good point on the depth of the coupler and the clearance will probably be an issue. I know how tight the original coupler fit in the flywheel housing, and there isn't much room for error. Thank you for you help Rich.
1975 v-179 starflite

Offline 75starflight

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Re: Mercruiser 140 rebuild
« Reply #29 on: March 23, 2014, 12:46:33 PM »
Good news every one!

I talked to my machinist Friday afternoon and I should (if everything goes well) have the 140 home by this coming Saturday!
1975 v-179 starflite

Offline Rich_V174SS

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Re: Mercruiser 140 rebuild
« Reply #30 on: March 23, 2014, 12:59:00 PM »
Cool, can't wait to see it installed and running.
1967 V174 Crestflite SuperSport Modified
1987 Mercruiser 190 3.7LX/Alpha One

1970 V176 Swinger
1983 Mercury 115

Offline 75starflight

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Re: Mercruiser 140 rebuild
« Reply #31 on: March 23, 2014, 01:38:30 PM »
Cool, can't wait to see it installed and running.

I have a long way to go before that happens. I still have to put the puzzle back together!
Its going to be slow going, this is my first engine build and all I can say is I hope I know what I am doing.
1975 v-179 starflite

Offline Plugcheck

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Re: Mercruiser 140 rebuild
« Reply #32 on: March 26, 2014, 07:55:51 AM »
      A good, high quality, service manual and you can always post questions here, you really should not have any issues.   The first engine you build will always give you a great sense of pride and accomplishment.   Rarely is that sense as strong in later builds, still fun though.   Have you checked YouTube for some rebuild videos?   
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: Mercruiser 140 rebuild
« Reply #33 on: March 26, 2014, 08:27:48 AM »
      A good, high quality, service manual and you can always post questions here, you really should not have any issues.   The first engine you build will always give you a great sense of pride and accomplishment.   Rarely is that sense as strong in later builds, still fun though.   Have you checked YouTube for some rebuild videos?

I do have a manual that i will be using that was given to me when we purchased phoenix from my in-laws. I watched some videos a couple months ago and will probably do some searching on youtube when questions do arise when I don't feel like posting on here. but in the end I am sure I will have plenty to ask from the knowledge of this group.
1975 v-179 starflite

Offline Plugcheck

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Re: Mercruiser 140 rebuild
« Reply #34 on: March 26, 2014, 10:01:39 AM »
    The same basic principles apply regardless of the engine you are assembling.   Clean, check clearances, proper lubricant, correct fasteners, torque specs, and sealants.   Plenty of videos on YT detailing how to check main cap clearances.   If your using new, and I suggest it, main and connecting rod bolts, be sure to follow the manufacturers instructions.   For example, TRW and ARP both furnish special lubricant for torqueing main and rod caps bolts.   Mains can be re-used in basically stock engine, but Con rods should always be fitted with new.   They stretch over time and can no longer provide the proper yield strength.  Not much money involved, half as much as a V-8(He He).    Spend some effort on cleaning the crankshaft oil journals if the shop turned it especially, use rifle brushes if you have too.   Harbor Freight sells a wonderful brush kit for cheap that works well.  If you have a way to support the crankshaft outside the engine, you could plastigage the con rods before installation, just mark them with a perm marker so you know which journal you checked them on.    Overall, take your time, mistakes happen when your in a hurry.   Check, check, and recheck fastener torque, its so easy to miss one.   Call me anytime if ya need too.   We want to see Phoenix in June.   I will be seeing you, hopefully, in April for breakfast.
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: Mercruiser 140 rebuild
« Reply #35 on: March 28, 2014, 11:50:57 AM »
Just got the call from the machine shop, the 140 parts are ready to be picked up!
1975 v-179 starflite

Offline 75starflight

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Re: Mercruiser 140 rebuild
« Reply #36 on: March 28, 2014, 04:47:07 PM »
We have a load of 140 parts on its way home.

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1975 v-179 starflite

Offline MarkS

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Re: Mercruiser 140 rebuild
« Reply #37 on: March 28, 2014, 05:26:49 PM »
SWEET!  Kinda like Christmas in March, even if you did have to pay for it yourself Brandon.   8)

Let the assembly begin!
Mark
1978 SSV-176

Offline 75starflight

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Re: Mercruiser 140 rebuild
« Reply #38 on: March 29, 2014, 03:03:15 PM »
Got the cleaning and thread chasing done today, and the darn silicone gasket maker is still.haunting me! Almost every oil pan, timing cover, and water pump bolt had that crud in it yet.
1975 v-179 starflite

Offline MarkS

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Re: Mercruiser 140 rebuild
« Reply #39 on: March 29, 2014, 04:52:27 PM »
Been there brother, that stuff can be a real pain!  The carbs on the '73 Johnson on my Starflite were full of it when I bought it.  Saving a few bucks on gaskets can really bite some people in the behind, especially when they use too much of it.
Mark
1978 SSV-176