Author Topic: Mercruiser 140 rebuild (Read 48673 times)

75starflight · « **Reply #100 on:** April 17, 2014, 10:44:08 PM »

Quote from: Jerry on April 17, 2014, 10:36:24 PM

Sounds great. Bolt her in!

Thanks Jerry! After my debacle with it on tuesday I was literally jumping for joy.

Hope to install it by the middle of next week. I need to paint the bilge install a new gimbal bearing and install the power steering. Then the 140 can go in. Oh, I will order the engine decal set this week.

dorelse · « **Reply #101 on:** April 17, 2014, 10:58:30 PM »

Nice work Brandon!!!

MarkS · « **Reply #102 on:** April 18, 2014, 04:00:39 AM »

Well done Brandon, I'll bet you slept a lot better last night!

75starflight · « **Reply #103 on:** April 18, 2014, 07:45:08 AM »

Quote from: MarkS on April 18, 2014, 04:00:39 AM

Well done Brandon, I'll bet you slept a lot better last night!

yes i did Mark, but now the anticipation is killing me on getting Phoenix all put back together again.

Burnin Daylight · « **Reply #104 on:** April 18, 2014, 07:55:31 AM »

Congratulations Brandon. The rewards of a lot of hard work.

thedeuceman · « **Reply #105 on:** April 18, 2014, 10:28:31 PM »

Looks and sounds great Brandon, ain't it great when it all comes together

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Rosscoe · « **Reply #106 on:** April 19, 2014, 10:42:22 AM »

Awesome.
You are now a 140 expert. Congrats!

75starflight · « **Reply #107 on:** April 19, 2014, 10:04:08 PM »

Well it continues. Went to go do my second valve lash tonight remove the spark plugs, found the number 4 to be coated in carbon and fuel and to have fuel sitting in the cylinder. remove the valve cover only to find the number 4 exhaust valve rocker nut completely backed off and the rocker arm turn to the side. Everything looks good internally from what I can see with the flashlight on number 4 other than the minor amount of fuel sitting in the cylinder on the piston. My question is should I try to remove the excess fuel from the cylinder before I restart the engine with new plugs after I get new nuts for the rocker arms? All I can say is the rocker arm must of fell off after the run of breaking in the cam and I'm glad that's when it did otherwise I probably wouldn't have an engine.

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Jason · « **Reply #108 on:** April 20, 2014, 10:38:57 AM »

I would just crank it over with the plug out to blow out the fuel. Put it back together. Go through valve lash again. Should be fine. Nice thing is it's better for a valve to be stuck closed then open. Won't hit the piston!

I've had this happen to me after putting an engine together before. Nothing was damaged.

Jerry · « **Reply #109 on:** April 20, 2014, 02:36:00 PM »

My guess is you can't just screw the nut on with your fingers, I think you adjusted that valve when the lifters were not on the heal of the cam. If you put the motor on TDC with the #1 exhaust valve just closing, and the intake valve just starting to open you will see the dist. rotor is pointing at #4. That's when you adjust that cylinder. The lifters are always on the heal of the cam when it's firing. Then check overlap on #3 and adjust #2, then #4 TDC and adj #1, then #2 and adjust #3. You just can't have it not adjusted right if you do it that way. ANY OTHER WAY AND YOU"RE GUESSING!

Jason · « **Reply #110 on:** April 20, 2014, 04:36:17 PM »

Look at the the push rod real carefully to make sure it's not bent too. And that the lifter is still seated correctly.

75starflight · « **Reply #111 on:** April 20, 2014, 04:48:08 PM »

Jerry, honestly the lock but screw on by hand! No tools required. And believe it or not my local O'Reillys is open on Easter so I order 8 new lock nuts to cover my azz to prevent this from happening again. Oh I am going to order two sets of spark plugs just in case they get that over fueled black carbonized look again. I should go buy a vacume gauge kit so I get the carb set correctly, plus it might help because I have never adjusted a carb before this engine.

75starflight · « **Reply #112 on:** April 20, 2014, 04:51:15 PM »

Quote from: Jason on April 20, 2014, 04:36:17 PM

Look at the the push rod real carefully to make sure it's not bent too. And that the lifter is still seated correctly.

Will do, I was planning on checking the pushrod on my ten inch table saw top since it is the truest surface I own. I was also going to pull the push rod cover to be safe when I redo the valve lash.

75starflight · « **Reply #113 on:** April 20, 2014, 05:03:07 PM »

Just checked the pushrod it is still in perfect shape.

Jason · « **Reply #114 on:** April 20, 2014, 11:20:41 PM »

Good!
You can't really adjust much on these 2v carbs. Just idle mixture and you need to be in the water to do that. Other than that just idle speed.

75starflight · « **Reply #115 on:** April 22, 2014, 10:21:00 PM »

Just a quick up date, engine was not injured after the rocker arm nut came loose compression is running at 180 psi across all four cylinders when cold. On another note I found one more nut that was working its way loose on the #1 intake valve so it is a good thing I replaced them all.

Plugcheck · « **Reply #116 on:** April 25, 2014, 10:46:30 PM »

Now you have learned first hand why certain parts should not be reused. Nylocks and other locking fasteners lose their locking strength and should not be reused. a valuable lesson to all. I hope to see her humming soon! A table saw deck would probably be better than what I use, a segment of granite countertop or sheet of glass to roll pushrods on.

buckz6319 · « **Reply #117 on:** May 16, 2014, 09:38:26 PM »

Good work Brandon!
engine looks and sounds really good! have you got her in yet?

Jerry · « **Reply #118 on:** May 16, 2014, 10:22:51 PM »

They use to make a rocker nut that was long and had a set screw in the end, so you could adjust the rocker and lock the nut down.

75starflight · « **Reply #119 on:** May 17, 2014, 12:25:01 PM »

Well tomorrow is the day. Phoenix Rising will be hitting the water tomorrow morning for her initial test run with the 140 and the power steering system. All I can say is I am both a little nervous and excited and praying everything works!

Wish me luck!!!!!!