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ROMPERSTOMPER

  • Karma: +0/-0
ROMPERSTOMER IS DOWN!
« on: August 19, 2010, 04:12:05 PM »
geese where do I start. Ive had some really bad luck lately. My boat is down (me), my truck smashed (gf), my sand car is broke(brother). At first I thought I spun a rod bearing because my pump started flooding the back of my boat and the motor sucked in water Either from the valve (home depot) I had connected to the oil pan and a a-n hose ran to the drain hole the ease oil changes, or from the dip stick tube. I shut the thing down instantly after i heard what sounded like a dead cilinder or rod bearing. floated 2 hours back to lost lake and when I pulled the motor when I got home I found all kinds of things wrong. I though I had this thing perfect, I really did. When I pulled the valve covers I noticed a push rod pounded to hell and slight damage to the shaft mount rocker, roller lifter took a pounding to. I realized this could have been the previous trip witch I could have prevented. I was doing some data logging at elsoner to fine tune the afr. on one pass the pump got out of the water and the motor reved out to 9500 rpm, Didnt relize it untill i hooked the logger up to the lap top at the end of the day. The boat had no symtoms of any damage when I put it on the trailer. Checked the oil and it was like new.The ecu is not fast enough so I should have had a module in the msd box, lesson learned, thought it was all good for the river, should have pulled the valve covers to be safe :banghead:nother lesson learned

At lost lake after a few rides the pump started leaking water from all over and at the same time Thats when I heard the dead cilinder.It happend fast. all of the sudden the boat was filling up with water fast. After removing the motor I noticed all the intake bolts/ studs on the pump were loose and one was missing. the hand held cover has stains on it like its been leaking black shiz. The intake and shoe have tiny cracks underneath the bottom of the hull al around the intake where the glass and metal meet.

Back to the motor, I pulled 2 rod caps and a main cap where the push rod was damaged last night. the bearings are fine. the cam looks like it needs to be buffed but salvage_able sp. The back sides of the  probe pistons look brand new same as the h-beam rods. valve's look ok. cilinder walls look great aside from a bit of rusty oil-water but wipes rite off, not stained. gonna pull the heads tonight along with all the rod caps and mains. I'm crossing my fingers. The oil came out of the pan grey and milky not the clear-brown before I left for the weekend. but I did not find any chunks of metal just very fine particiles sp. tonight ill post pictures and details of the rest. Ill ned advice on the pump, and dont unerstand what happend there. Its a built pump by GS marine with the works. I already have a bigger cam and better lifters top drop in. I Hope I can buy just one rocker, they were 1200$ for the set. If the pistons are damaged im considering going to e85 or pump gas. f-race fuel, was dropping 6-700$ a weekend.If not i want to de tune to 91 octane.

How do I de-tune to 91 with 12-1 comp with out swaping pistons. Is it possible. can I cc the heads or does that cost more than a set of pistons. can I run a thick head gasket? Hears my story what do you think?
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lbhsbz

  • Karma: +29/-1
Re: ROMPERSTOMER IS DOWN!
« Reply #1 on: August 19, 2010, 06:25:13 PM »
Haha...we might be related...we have the same luck
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farmergord

  • Karma: +6/-0
Re: ROMPERSTOMER IS DOWN!
« Reply #2 on: August 19, 2010, 06:36:04 PM »
i thinjk I belong in your club too :banghead: boats dead again and a bunch of expensive tractor breakdowns
  • Boat #1: 1976 Pioneer 19foot
  • Boat #2: 2020 Kingfisher 2025
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IRRebel

  • Karma: +16/-0
Re: ROMPERSTOMER IS DOWN!
« Reply #3 on: August 19, 2010, 07:02:09 PM »
I'd be VERY wary of the grey oil. Sounds like bearing material to me. Maybe mains? Cam bearings? Rod bearings not checked yet? Liners in the roller lifter holes? Only way to know is rip it clear down, measure carefully and determine and understand the "whys" before you put it back together. Dave at A&D and Paul at High Flow Dynamics are the go to guys on this. But, obviously, contamination of all the engine parts is going to require a thorough cleaning, checkup. Pressure check wouldn't hurt either.

The top end damage sounds VERY familiar though...... :banghead:

Haven't seen a rocker set yet you can't buy individually.  :thumbup:

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

ROMPERSTOMPER

  • Karma: +0/-0
Re: ROMPERSTOMER IS DOWN!
« Reply #4 on: August 20, 2010, 03:29:39 PM »
Well my freinds.It happens to the best of us. kepp your head up high. thats all we can do at this piont.

I pulled the heads of this morning and the pistons are fine on the tops and bottoms. the cilinder walls ok little rust. Gonna hone and clean everything, all new bearings, better push rods, one rocker,jessel, a better cam 850 lift gun drilled beefy sucker, new lifters, howards, cam and lifters I already had waiting for the next explosion :mad:. I have the option to do a 496 but ill have to spend 600 on pistons so I think im over it for now, unless I find a rod toasted. gonna pull those off tonight. so far so good.

so far what i think happed is when the boat poped out of the water it reved to 9500 10,000 in a split second the ecu was to slow to cut it out and when the boat landded back in the water at that rpm and torgue is what cause the pump to come loose. has this happend to any one on here?? about 800 hp at 10,000 rpm can effect the pump  like that. this thing pops out all the time. Ill make sure I have a msd module in the box so it cant rev over 7800 rpm ever again.so far it all came down to the rev limiter not kickin fast enough. wouldnt have ruined the cheep push rod speed-o-motive put in my motor when everything else was top dollar. wouldnt have put that huge load on the pump to make it come looseand leak water.

crazy how one malfunction can cause a chain reaction to almost destroy a complete boat. If I kept driving it like some may have done, it would have both sunk the boat and destroyed the motor. Close one! This is why were on here to lean from my mistakes lol. dont buy cheep motor parts when tryin to acheve big hp. If I had seen the push rods on my build I would have swapped them out. It was the one thing I over looked and it bit me in the ass.

 my camra is broke so I waiting to borrow my friends this weekend cause I know you guys love pictures as much as me. ;D
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IRRebel

  • Karma: +16/-0
Re: ROMPERSTOMER IS DOWN!
« Reply #5 on: August 20, 2010, 03:42:32 PM »
FWIW Romper, mine blowing was NOT due to inferior parts, but more due to improper tolerances. My first marine build, and my thinking was to build it as tight or tighter than the street engines I had built years ago. That, in and of itself, might have survived were it not for the water reversion issue. Pressure pop-off valve installed and all, headers ALWAYS ran wet, even at idle. Elsinore in January is when I started the damage. Boat was out twice after, ran like crap, thought I had the problem nailed, but Big River it decided otherwise. Damage already done, lifter popping out, twas all over before it started!  :banghead:

Good luck with the rebuild! I'm with ya on a different approach and finding a few more ponies along the way!  :thumbup:

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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