SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: JOE COASTIE on July 27, 2014, 05:40:25 PM
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so took it out today...was running fine..then started to make crazy noises....so got home took valve covers off and found this. Wat caused this? It didnt over heat but it was only cooling off when boat was running....when i would shut her down then go back and start her up the temp was high..is that normal?
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so took it out today...was running fine..then started to make crazy noises....so got home took valve covers off and found this. Wat caused this? It didnt over heat but it was only cooling off when boat was running....when i would shut her down then go back and start her up the temp was high..is that normal?
i guess i need new heads and lord knows wat else..
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I don't see anything wrong... If you are referring to those "holes" those are ment to be there. Oil returns
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X2, don't see squanto... Panthers run hot at idle, need to step the idle up to about 1,200 to make them work with a tired pump...
GT
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Really? those big awkward looking cut outs? lol maybe i just dont remember them being there... it looks like chunks are missing...oh dam duh i guess i can pics of bbc heads huh? duh!!!!
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Slow and steady wins the race LMAO
Easy there turbo.
GT
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Slow and steady wins the race LMAO
Easy there turbo.
GT
hahaha dam u got me...no but for real u guys dont see them big ass square chunks missing? ur saying those are supposed to be there...i just looked up heads and found none with big ass square..triangle holes in them.
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and this one
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This?
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Well lemme tell you there drama queen... Normal
On my 781 heads, you could drop a golf ball through there because they have been ground out to be smooth and more open. They are oil return holes.
You are fine.....
Now you want to get into the background to what caused this panic attack?
GT
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That is casting flash left over from the sand casting process. The foundry will usually break that off with a hammer and what you are seeing is the remains. That can be removed with a die grinder and carbide rotary file before the head is assembled. It is kind of like porting, but for the oil returns. You will also find those all around the outside of the block and heads, wherever there is a parting line in the mold.
Some theories for removal of the casting flash include: Less restriction for oil returning to the pan. Reduced stress risers. Remove sharp edges to prevent injury during handling. Or you can just be cool so you can get all the chicks and polish the outside of your block and heads, blending in all the casting flash so your engine has a show-quality paint finish.
No worries brotherman. If it was going to break off, it would have done so by now in a now 40+ year old casting. Not to say that there aren’t casting flaws in bocks and heads, but I think your gaskets would go long before a chunk of your head will fall off.
Cheers,
Joe
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That is casting flash left over from the sand casting process. The foundry will usually break that off with a hammer and what you are seeing is the remains. That can be removed with a die grinder and carbide rotary file before the head is assembled. It is kind of like porting, but for the oil returns. You will also find those all around the outside of the block and heads, wherever there is a parting line in the mold.
Some theories for removal of the casting flash include: Less restriction for oil returning to the pan. Reduced stress risers. Remove sharp edges to prevent injury during handling. Or you can just be cool so you can get all the chicks and polish the outside of your block and heads, blending in all the casting flash so your engine has a show-quality paint finish.
No worries brotherman. If it was going to break off, it would have done so by now in a now 40+ year old casting. Not to say that there aren’t casting flaws in bocks and heads, but I think your gaskets would go long before a chunk of your head will fall off.
Cheers,
Joe
oh yea didnt think about my gaskets going first duh...soooo i dont hav chunks of metal in my engine sum where rite...i just dont remember thos big ass pieces missing wen i put it together...
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That is casting flash left over from the sand casting process. The foundry will usually break that off with a hammer and what you are seeing is the remains. That can be removed with a die grinder and carbide rotary file before the head is assembled. It is kind of like porting, but for the oil returns. You will also find those all around the outside of the block and heads, wherever there is a parting line in the mold.
Some theories for removal of the casting flash include: Less restriction for oil returning to the pan. Reduced stress risers. Remove sharp edges to prevent injury during handling. Or you can just be cool so you can get all the chicks and polish the outside of your block and heads, blending in all the casting flash so your engine has a show-quality paint finish.
No worries brotherman. If it was going to break off, it would have done so by now in a now 40+ year old casting. Not to say that there aren’t casting flaws in bocks and heads, but I think your gaskets would go long before a chunk of your head will fall off.
Cheers,
Joe
oh yea didnt think about my gaskets going first duh...soooo i dont hav chunks of metal in my engine sum where rite...i just dont remember thos big ass pieces missing wen i put it together...
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oh yea didnt think about my gaskets going first duh...soooo i dont hav chunks of metal in my engine sum where rite...i just dont remember thos big ass pieces missing wen i put it together...
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[/quote Maybe ive been drinking to much today...lol
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Well lemme tell you there drama queen... Normal
On my 781 heads, you could drop a golf ball through there because they have been ground out to be smooth and more open. They are oil return holes.
You are fine.....
Now you want to get into the background to what caused this panic attack?
GT
uummm coors light? gota b that cuz my therapist says im normal..😷
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Well lemme tell you there drama queen... Normal
On my 781 heads, you could drop a golf ball through there because they have been ground out to be smooth and more open. They are oil return holes.
You are fine.....
Now you want to get into the background to what caused this panic attack?
GT
the panic attack actually started to happen cuz engine started knocking so got it home pulled covers and seen those....so now just gota find out were knock was coming from...prob cuz i didnt use a straight weight oil like u said...lol...oh sorry dont wanna statt that debate again lol..no but for reals thanks for all ur input GT appreciate it man....
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Are you sure the knock was not the pump? Just saying... ;)
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This guy's in the coast guard there motto semper paratus which means always ready I guess he's just trying to live up to it lol
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this thread cracks me up... "omg theres holes all over my motor! help!"
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this thread cracks me up... "omg theres holes all over my motor! help!"
LOL!
Those holes are there to show your wife that's bad and convince her you need new/better heads when really you don't but she won't know.....lol
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This guy's in the coast guard there motto semper paratus which means always ready I guess he's just trying to live up to it lol
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oh yea cuz i was ready to put sum badass heads on it..lol just looking for a excuse...lok
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oh yea cuz i was ready to put sum badass heads on it..lol just looking for a excuse...lok
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I tell my wife the same shit oops sorry honey it broke lol
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I tell my wife the same shit oops sorry honey it broke lol
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hahahahahah rite?
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this thread cracks me up... "omg theres holes all over my motor! help!"
theres always one who has to knock on the new guy...lol prob a bully in H.S. or bully'd hhahhaa
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theres always one who has to knock on the new guy...lol prob a bully in H.S. or bully'd hhahhaa
we've all been there before... i dunno what id do if my motor started knocking, etc. probably why it doesnt see much use over 3-3500rpms right now. dont have the money to buy new motors.
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we've all been there before... i dunno what id do if my motor started knocking, etc. probably why it doesnt see much use over 3-3500rpms right now. dont have the money to buy new motors.
i kno i kno just busstin balls dude...board sorry hhahaa
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i guess ill just tear into it AGAIN and see wat the happs is...after looking at top end first
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mobile
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Are you sure the knock was not the pump? Just saying... ;)
so after yesterdays drunk "n" freak out....i got it together ..its not coming from pump its a pushrod/valve/lifter chatter noise...cant pin point which one...the chatter speads up with rpm's...could be a stuck plunger on the lifter?
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Daaaaam its looking and sounding like a rod bearing
..
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If you running a mechanical fuel pump try to hear if the sounds is coming from that area. It could be the pump push rod rattling cause the cam lobe or rod is worn.
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If you running a mechanical fuel pump try to hear if the sounds is coming from that area. It could be the pump push rod rattling cause the cam lobe or rod is worn.
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yea could be i rolled the cam....only thing left is to open her up i guess...lol
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Just sucks cuz she was hauling ass for a daycruiser !! 😜
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