How the F did my engine blow?
08-02-2005, 11:21 PM
#24
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Originally Posted by co.6z28
wierd u guys got the same cam
FWIW all of my lifters were shot, the rest will be revealed soon.
No reason to blame the cam specifically on this, as it was (like mine) a higher mileage car. I'll suggest a new set of lifters to anyone doing a cam swap from now on, be it low or no miles, the added piece of mind would be worth the extra work/time.
How fast is it? Do you hear it at all RPMs? is it a sewing machine sound or just some thuds?
I'll guess rod bearing or the lifters, depending on how fast.
08-03-2005, 07:18 AM
#26
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Originally Posted by Slowhawk
I would say spun bearing.
Funny thing is I just had 2 cars with the same problem.Both were running big Cams like the F14.
Funny thing is I just had 2 cars with the same problem.Both were running big Cams like the F14.
<IF YOU WANT A BIG CAM, BUILD YOUR MOTOR FOR THAT PURPOSE>
Lifters and rod bolts are not made to handle what you guys throw at them with big duration/lift cams.
Otherwise do not be astonished. Just face the facts and do it right this time.
I'm not bashing anyone, just reafirming my conviction, if I sound harsh or (assholic) please forgive.
And when you rebuild, please change the crank dampner to a unit that will control the added harmonics develloped by the added abuse.
I also have lost a 01 motor due to too much nitrous use. This is why I'm saving for something big (A non sleeved 427)
08-03-2005, 07:31 AM
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How was the oil pressure. Seems that cam bearing are the root of most of the problems. They get a slight score, the oil pressure fluxuates and next thing you know is that bottom end is knocking from a spun rod or main bearing. Best thing is to pull the motor out of the car and tear it down. Pull the cam and look at the cam bearings as well.
08-03-2005, 07:43 AM
#28
Is an f-14 really a BIG cam? When I think Big, I thing f-15 (RJ), T-Rex, Gx5-whatever, etc. Having an f-13 myself, I cant (or dont want to) believe that cams one size up from mine are blowing motors apart due to their overwhelming lift and duration. Im not saying that the size of these cams did not contribute to it, but really there must be something else... What was the rev limiter set to and how often did it see it? Maybe there was a flaw in the actual construction of the rods or bolts from the factory... Its got to be something besides just the size, no?
08-03-2005, 07:48 AM
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Originally Posted by Brandon
kinda weird, but thats why i replied, as i've talked to him about his setup before he got the cam, etc. Just wanted to check up.
FWIW all of my lifters were shot, the rest will be revealed soon.
No reason to blame the cam specifically on this, as it was (like mine) a higher mileage car. I'll suggest a new set of lifters to anyone doing a cam swap from now on, be it low or no miles, the added piece of mind would be worth the extra work/time.
How fast is it? Do you hear it at all RPMs? is it a sewing machine sound or just some thuds?
I'll guess rod bearing or the lifters, depending on how fast.
FWIW all of my lifters were shot, the rest will be revealed soon.
No reason to blame the cam specifically on this, as it was (like mine) a higher mileage car. I'll suggest a new set of lifters to anyone doing a cam swap from now on, be it low or no miles, the added piece of mind would be worth the extra work/time.
How fast is it? Do you hear it at all RPMs? is it a sewing machine sound or just some thuds?
I'll guess rod bearing or the lifters, depending on how fast.
plus , u wanna visit people above 6200 rpm please get a better oil pump , ported ls6 ..
08-03-2005, 07:51 AM
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Originally Posted by freakynipples69
I am going to rip the engine apart soon. I'm looking for a good guide/instructions/steps on how to remove the oil pan. Anyone know of one?
08-03-2005, 10:01 AM
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I too would like to know how the oil pressure is/was. Mine was a little down, but nothing horrible at all...
PredatorZ, I'll have to agree with you there, to some extent. I'd say a set of lifters on a cam with the relativly harsh lobes like the f14, should be used. Be it the comp 850-16s or whatever...
Wouldn't a rod/main have more of a squeak along with knock, or does that come later on during destruction?
PredatorZ, I'll have to agree with you there, to some extent. I'd say a set of lifters on a cam with the relativly harsh lobes like the f14, should be used. Be it the comp 850-16s or whatever...
Wouldn't a rod/main have more of a squeak along with knock, or does that come later on during destruction?
08-03-2005, 10:54 AM
#32
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Originally Posted by FiveSevenEagle
u can find what u want in ls1 howto ,
I was about a quart low on oil before this happend. Probably wasn't enough oil for the higher RPMs. Oil pressure seemed fine though as far as I noticed.
So you suggest getting a new lifter set? What do you all suggest I get?
08-03-2005, 11:00 AM
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just depends on what you find when you tear it down..
could need the crank turned, new rods, new cam, lifters, etc etc.
Just depends on what is messed up.
Put a set of comp 850s in there at the least when you tear it down...
could need the crank turned, new rods, new cam, lifters, etc etc.
Just depends on what is messed up.
Put a set of comp 850s in there at the least when you tear it down...
08-03-2005, 12:10 PM
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Originally Posted by freakynipples69
I checked there but couldnt find anything. Maybe you could directly link the guide that you are talking about?
I was about a quart low on oil before this happend. Probably wasn't enough oil for the higher RPMs. Oil pressure seemed fine though as far as I noticed.
So you suggest getting a new lifter set? What do you all suggest I get?
I was about a quart low on oil before this happend. Probably wasn't enough oil for the higher RPMs. Oil pressure seemed fine though as far as I noticed.
So you suggest getting a new lifter set? What do you all suggest I get?
sorry i thought there is something in ls1howto but there is nothing related , i was mixing with a nice book i have .. i dont remember the name of the author maybe will handzle u can check amazon or any online book stores , as far as i know there is only 2 books specialized in ls1 ..
08-03-2005, 08:01 PM
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Originally Posted by freakynipples69
Chevy LS1/LS6 Performance by Chris Endres and How To Build Performance Chevy Ls1 - Will Handzel
08-11-2005, 03:34 PM
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How did the cams look when you pulled them out.. were they ground up or anything? I tend to think the f14 is just a coincidence.. Any cam that is being used on an engine going way higher than normally intended rpms will eventually experience failure.. whether it be 5k... 14k.. 22k.. 30k.. 
Some are just lucky. Hell, I have a friend with an f11 with like 130k on his car.. the cam went in at 100k. He also has had a spec stg 2 in there for like 40k+ miles. lol. He doesn't take his car to redline daily though, although.. it is set to 6800.
Good Luck,
Josh
Some are just lucky. Hell, I have a friend with an f11 with like 130k on his car.. the cam went in at 100k. He also has had a spec stg 2 in there for like 40k+ miles. lol. He doesn't take his car to redline daily though, although.. it is set to 6800.Good Luck,
Josh
08-11-2005, 03:38 PM
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Its just coincidence. Nothing wrong with any of FMS's cam grinds. I had a high mileage car, and the lifters just decided to go, same with Freaky.
I'll have another FMS cam, Allan's grinds are great!
I'll have another FMS cam, Allan's grinds are great!