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79charger

  • Karma: +0/-0
Collapsed valve spring.......any hope for no contact?????
« on: April 12, 2010, 07:10:43 PM »
Coming back From Topock saturday i noticed a slight loss of power in my 460 . I nursed her home and did a compression check and found a low cylinder ...like 20 lbs .I popped the valve cover off and noticed the rocker arm was real sloppy and the spring was quite a bit lower than the others . Any chance the piston didnt hit that intake valve or is it pretty much a sure thing . Thanks
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78centurian

  • Karma: +3/-1
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #1 on: April 12, 2010, 07:27:51 PM »
i was out that way on saturday...what boat were you in
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79charger

  • Karma: +0/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #2 on: April 12, 2010, 08:39:38 PM »
Tan and brown Mini day . With Scoop on the carb .
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429heads

  • Karma: +3/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #3 on: April 12, 2010, 09:15:25 PM »
Question is valve spring New used or abused.
 Is it a single or duel spring with dampener ?
 what is you budget like ?
If old motor and you have some money pull both heads
have them checked. cheaper than a new motor.
Have new springs , retainer and locks in staled NO USED JUNK.
spend money on new valves & guides, 5 angle valve job, A lot eraser
to fix know than learn to walk on water. 
 :banghead:
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enginedoctor

  • Karma: +7/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #4 on: April 12, 2010, 09:22:25 PM »
Have the heads inspected...They will tell the tale......5  angle v/j??? Why not Radius?  :sly:....just ask'in.
  • Boat #1: 1970 Horizon Cheby powered Jet
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78centurian

  • Karma: +3/-1
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #5 on: April 12, 2010, 09:25:59 PM »
i think i might have seen you cruise by later in the afternoon maybe??

i was in a tan and white jet with ot's and a brown and yellow bimini top
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IRRebel

  • Karma: +16/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #6 on: April 13, 2010, 01:43:21 AM »
Find a bud or shop with one of them Bore scope camera deals to look at the piston through the spark plug hole. Odds are maybe 50/50 on the damage deal.

If you can't find someone with one, Home Depot sells a Milwaukee one for under $300 you can use to check it out, and we have a VERY liberal return policy.........But I didn't tell you that.........

Ray
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"Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways totally worn out shouting 'Holy Shit what a ride!"---Crewcheif22 AKA Keith

79charger

  • Karma: +0/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #7 on: April 13, 2010, 06:13:36 PM »
Well I lucked out ....kinda of... it wasn't a collapsed spring it was a broken lifter , I mean Really broken . I tryed fishing the broke piece out but it must have fell in the pan . I am going to dump the oil and try to flush it out . Really dont want to pull the motor. I am just looking for one more season out of this motor . One question is my intake runners on my heads our really nasty . They look like exhaust ports . Is this normal in a boat? Part of me wants to pull them off and hot tank them since i have the intake off but it ran great like this before the broken lifter . I am going to replace all lifters. At the minimum.
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79charger

  • Karma: +0/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #8 on: April 14, 2010, 07:13:18 PM »
replaced the lifters and fired right up . Close on wheewww. Thanks everyone
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HDriderTH

  • Karma: +12/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #9 on: April 14, 2010, 07:21:28 PM »
Dude........what you've done here is worn a hole in the contact surface of the lifter. The cam is flat, period. It may run on the bandaid for a little while but start lookin for a cam...and another set of lifters.
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'82 Sanger Bubble deck, Blown 454....V-drive

enginedoctor

  • Karma: +7/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #10 on: April 14, 2010, 08:50:01 PM »
Replace cam/lifters...I agree ;D
check for other valve train probs. and contamination!
  • Boat #1: 1970 Horizon Cheby powered Jet
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79charger

  • Karma: +0/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #11 on: April 14, 2010, 09:36:35 PM »
Worn flat? You can see where the top of lifter sheared off . The guy at my local speedshop said it looks like It had fatigued and maybe i floated the valves and it gave way . Which could have been a possibility due to A wot run in choppy water . The lobe is still there and looks fine. I flushed the motor  twice already . i know I am taking a risk by not tearing down the motor , but like I said I Need the rest of the season and I have a longblock waiting for a few final touches to be dropped in
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enginedoctor

  • Karma: +7/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #12 on: April 14, 2010, 09:50:33 PM »


Ask him why the other lifter is flat at the bottom.best of luck. ;D
  • Boat #1: 1970 Horizon Cheby powered Jet
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GT Jets

  • Karma: +192/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #13 on: April 14, 2010, 10:02:32 PM »
You wont find the "piece"....It is now in the form of crankshaft honing abrasive... :thumbdown:

If you get three hours out of it, I'll eat my words, but that deal is done.......Sorry bro...Hope I'm way off.

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

electrowoman

  • Karma: +1/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #14 on: April 14, 2010, 11:41:57 PM »
I'm curious as to what brand lifter they are.  I would like to make sure I don't
get one.   Good luck, I hope it lasts for you.
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79charger

  • Karma: +0/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #15 on: April 15, 2010, 05:16:38 AM »
or the piece could be happily sitting against my magentic drain plug ........wishful thinking but thats all I have right now lol .
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electrowoman

  • Karma: +1/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #16 on: April 16, 2010, 06:14:19 PM »
Did you get it torn down yet?   Good, bad or ugly?
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79charger

  • Karma: +0/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #17 on: April 16, 2010, 09:22:36 PM »
Changed all the lifters , flushed the motor with atf and two filters and oil changes . The initial oil didnt look contaminated . But who knows . Same compression I had 6 months ago and it , seems to run fine . I am going to take it out and give her a work out at my local lake to see if any problems come to fruition . Rather have it happen 15 minutes from home than 4 hours at the river . Hopefully I lucked out . I believe theres a bet on here for three hours it will last lol ...... who knows ????
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GT Jets

  • Karma: +192/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #18 on: April 16, 2010, 10:32:39 PM »
Changed all the lifters , flushed the motor with atf and two filters and oil changes . The initial oil didnt look contaminated . But who knows . Same compression I had 6 months ago and it , seems to run fine . I am going to take it out and give her a work out at my local lake to see if any problems come to fruition . Rather have it happen 15 minutes from home than 4 hours at the river . Hopefully I lucked out . I believe theres a bet on here for three hours it will last lol ...... who knows ????


It wasn't a bet, it was just a caution...

Did you repeat the cam break in procedures outlined by the cam manufacturer?

I hope so...Go buy two bottles of Comp break in additive or similar, you will be glad you did...

In all honesty, I hope it runs great, have fun and be safe.. :thumbup:

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

79charger

  • Karma: +0/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #19 on: April 17, 2010, 07:11:55 AM »
Yes I did re break in the cam with comp cams assembly lube. I was kidding about the bets for three hours ... I know too I will be lucky if it stays together the rest of the season . Wheres Obama with my stimulus package for my new motor lmao
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IRRebel

  • Karma: +16/-0
Re: Collapsed valve spring.......any hope for no contact?????
« Reply #20 on: April 17, 2010, 09:53:15 AM »
If you get a stimulus package for a new motor, lemme know, I need one for TWO motors!  :screwy:

Ray
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"Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways totally worn out shouting 'Holy Shit what a ride!"---Crewcheif22 AKA Keith

 


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