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koldcowboy
Taurus
Boatless
Laguna Niguel, Ca
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Posted: April 08 2004,10:43 am |
Post # 1 |
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Hey Newbie here: Â 
So far this is the best board for honest advice from what I see
So,
I need help with a Blower motor issue......
here it goes.
19 hours on a 454 stock
with aftermarket cam
Weiand blower, and dual 750-cfm Holley carburetors
40-45 mph no problem runs around all day long no issues
as soon as boat accelerates to about 55-60 get a crazy pop,
pop  from the motor on decceleration...(seems to happen when it gets in boost and then just backing off the throttle ever so slightly).
then,
motor stalls out dead in the water.
Fire it right back up no problem blows smoke out of the exhaust then runs around until you accelerate again to the same issue.
thats my problem....
First thoughts were fuel.
so checked fuel lines everything is ok
check carbs...ok
changed a couple bad spark plug wires...
ran it around Elsinore again the next week.
no issues until it hit boost again....damn damn
now she wont even idle....running on 6-7 cylinders maybe..
had to limp her back to the trailer!!!!!!!!
please help
give me your thoughts!!!!!!!!!!!!!!
OK so here's the next post....
 Â Â Â Â
Wednesday motor Test:
The motor is shot....DAMN DAMN DAMN.
# 2 nothing on compression
every other cylinder 150 PSI
Leak down test: Air blowing out the intake( carbs)
Water in every cylinder
Plugs are shot
No fuel pressure regulator
HYDRAULIC the motor maybe?????
Maybe bent intake valve????
The suckie thing is this is a new boat to me. i just bought this thing from a private party a month ago. I ran it for 30 minutes...had the problem the first time took it to the engine builder he said they might have found the problem and installed 3 new wires. I went back out again ran it for 30 minutes again and had the same problem again but this time it wont idle anymore.
running on 7 cylinders.
Any thoughts from you Veterans guys on this board.....
WHAT DO I DO???????
Should I look into legal with the seller???????
Edited by koldcowboy on April 08 2004,1:45 pm
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GoFastRacer
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Big River, Ca
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Posted: April 08 2004,8:36 pm |
Post # 9 |
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Well we need a lot more info on the motor(compression,cam specs, timing, fuel system, jetting etc.) to pinpoint the problem but I'm guessing here that you were on a melt down under load and the fuel delivery is part of the problem. You may have cooked a valve is the reason blowing out the top?. Water in every cylinder could be from several things!.
Sounds to me that this was put together just to sell,(I've seen this many times) I looked at the pic and a red flag popped up instantly!.That funky fuel line is a dead giveaway, nobody would put something like that on something that looks that good. Everything is polished on there but the idler bracket spacers, why!..My advice would be to tear the whole thing down and go through it from top to bottom and make sure it's right, it'll save you a whole bunch of money and grief!....
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GoFastRacer
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Big River, Ca
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Posted: April 09 2004,5:36 am |
Post # 11 |
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Maybe we'll get a little more info on this!..
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BigBoyToys
Pisces
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Spokane, WA
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Posted: April 09 2004,6:32 am |
Post # 12 |
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Yep....I don't believe that there is currently enough info about the motor here to come up with an educated guess. There's alot of things that it "could be" right now, but it can certainly be narrowed down quite a bit if more specs on the engine internals are available. To me, it sounds like there was some detonation going on and it popped a valve and cracked a head at the water port. That would let ya still run(Usually), but it would run crappy. Need to know stuff like compression Ratio, valve type (2 piece or 1?), Cam specs, timing, ignition system type, etc. It may very well be 2 or more problems too. I'm thinking that maybe there is an MSD system and that can cause the problems at the higher speed if faulty. But, that doesn't explain the dead cylinder and water in oil. It's also a possibility that your timing chain jumped a bit.
My guess here is 3 fold. Bad Timing(Can be caused by alot of things), bent/broke valve (caused by detonation due to timing issue), cracked head (Caused by detonation/bad valve)
The reason I say this, is a similar scenario happened to me 2 summers ago. Cheap gas along with bad timing causing detonation, which in turn caused a miss at higher speed (Popping noise), dead cylinder (#8), caused by a broken valve spring and a cracked head at the same valve. I actually blew a 1/4" gap between #6 and #8 cylinders on the topside of the head.
 OBAMA=OneBigAssMistakeAmerica |
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GoFastRacer
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Big River, Ca
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Posted: April 09 2004,7:11 am |
Post # 13 |
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Yep!..
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GoFastRacer
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Big River, Ca
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Posted: April 09 2004,7:21 am |
Post # 15 |
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Yep and there sure are a lot of them!..  
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boatnam1
Boater
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Posted: April 09 2004,5:14 pm |
Post # 16 |
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my blower motor did the exact same thing yours is doing i cooked 2 pistons on a little lean condition.
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koldcowboy
Taurus
Boatless
Laguna Niguel, Ca
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Post Rank: 322
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Posted: April 10 2004,1:25 am |
Post # 17 |
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OK Motor junkies....Here it is: 
I dropped off the boat this morning in Corona hint???Hint???
They tore down the motor:
Heres what i saw:
They took off both heads
Even bank, # 2 is dead intake valve "tuliped the valve"
So why did this happen i asked???
LEANED HER OUT Â
Checked fuel pressure from the "new" black holly fuel pump
Well turns out 3 psi was pumping out......Should be no less then 6-7 i guess with this application. So when we were running 35-40 no worries motor was fueling fine then we get into boost and higher RPM's we sucking fuel from nowhere...boat stops dead in the water regression floods the exhaust headers and wamo you have this story....
So Im happy to say that the engine is going to be rebuilt this week with new goodies that i buy this time.
thanks Gofastracer  
thanks yard barg Â
thanks AZKC Â
thanks bigboytoys Â
You guys are one good reason the boat fourms are useful tools. I will keep you posted on news to come...
If you have any other info or ideas for a me shoot them my way.
Hope to soon be floating again and can buy you guys a beer
thanks,
kold
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GoFastRacer
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Big River, Ca
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Posted: April 10 2004,6:31 am |
Post # 18 |
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Glad we could help, that's what we're here for!. Good luck with the new motor! I would suggest you upgrade the fuel system though!.. 
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boatnam1
Boater
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Posted: April 10 2004,7:52 am |
Post # 20 |
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good luck on your motor i wouldnt count on it being rebuilt this week though.you better just shoot for having it by summer.
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koldcowboy
Taurus
Boatless
Laguna Niguel, Ca
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Posted: April 12 2004,11:48 pm |
Post # 22 |
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Dam damn damm
THe Fricken Heads are cracked...or at least one....
SO THE QUESTION NOW IS THIS:
What heads should i be looking at...Anybody got a set used???
Wait maybe im over used shit..its been trouble in the past
Dam Damn
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GoFastRacer
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Big River, Ca
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Posted: April 13 2004,5:38 am |
Post # 24 |
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| Quote (koldcowboy @ April 12 2004,11:48 pm) | Dam damn damm   Â
THe Fricken Heads are cracked...or at least one....
SO THE QUESTION NOW IS THIS:
What heads should i be looking at...Anybody got a set used???
Wait maybe im over used shit..its been trouble in the past
Dam Damn |
Sorry to hear that!  What are you looking for, square port, oval, iron or aluminum, OEM or aftermarket!.. 
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koldcowboy
Taurus
Boatless
Laguna Niguel, Ca
Posts: 11
APPD 0.00
Post Rank: 322
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Posted: April 13 2004,7:30 am |
Post # 25 |
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| Quote (GoFastRacer @ April 13 2004,5:38 am) | | Quote (koldcowboy @ April 12 2004,11:48 pm) | Dam damn damm   Â
THe Fricken Heads are cracked...or at least one....
SO THE QUESTION NOW IS THIS:
What heads should i be looking at...Anybody got a set used???
Wait maybe im over used shit..its been trouble in the past
Dam Damn |
Sorry to hear that! What are you looking for, square port, oval, iron or aluminum, OEM or aftermarket!.. |
GOFAST,
Anything as of right now.......Stock OEM are ok but would love to get a little more performance/power
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