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should I run the motor until it breaks or forge it first?

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Old Aug 1, 2010 | 12:51 AM
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Default should I run the motor until it breaks or forge it first?

I have a turbo setup. At 515whp right now @ 11psi, stock cam, 2002 ls1 with t56. I'd like to thow a cam in and maybe up the boost to get it at 600whp. Should I run the motor until it breaks or forge it first? I hear most likely the first thing to go would be a ring land. But what are the chances it will ruin my block if it goes or would I most likey just need to bore it out like I'd have to anyway if I forge it ahead of time. I've heard some ls1's run 600+ for a few years so it would be nice not to have to forge the motor if I don't need to.
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Old Aug 1, 2010 | 01:34 AM
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Can't bore it, they take 3 hones and your done, apart from expensive resleeve
Do it once, do it right
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Old Aug 1, 2010 | 10:55 AM
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What I'm asking is what is my chances of ruining the block if I just run it until a ring land or something else goes out?
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Old Aug 1, 2010 | 11:17 AM
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i woudnt risk it if i were you. if a piston lets go, chunks of that piston can go through your head, destroy your head and possibly destroying your turbo to. if a rod lets go, well then your whole entire block is fucked.
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Old Aug 1, 2010 | 11:43 AM
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Originally Posted by unclebens
I have a turbo setup. At 515whp right now @ 11psi, stock cam, 2002 ls1 with t56. I'd like to thow a cam in and maybe up the boost to get it at 600whp. Should I run the motor until it breaks or forge it first? I hear most likely the first thing to go would be a ring land. But what are the chances it will ruin my block if it goes or would I most likey just need to bore it out like I'd have to anyway if I forge it ahead of time. I've heard some ls1's run 600+ for a few years so it would be nice not to have to forge the motor if I don't need to.
I would do the cam, you could probably gain a good amount of power, without reaching more dangerous cylinder pressures. Either way I would say a perfect dyno tune and the right fuel will be essential. I would not increase your boost unless you build the engine with forged components. I would not risk it unless you can afford to replace it.
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Old Aug 1, 2010 | 06:43 PM
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If you just put a set of pistons, good hardware, and new bearings in, it would last a long time with a good tune and fuel.
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Old Aug 1, 2010 | 10:58 PM
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Originally Posted by black_z
If you just put a set of pistons, good hardware, and new bearings in, it would last a long time with a good tune and fuel.
Well if I were to pull the motor and do all that work, I'd throw in rods too and call it done.
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Old Aug 2, 2010 | 12:23 AM
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dont risk it. forge it first
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Old Aug 2, 2010 | 12:53 AM
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if you are trying to keep it alive at higher power levels dont put a big cam in it and spin it out real high.
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Old Aug 2, 2010 | 06:43 AM
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Leave it as is and crank the boost up a little. It will be fine if its tuned right.
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Old Aug 2, 2010 | 11:23 AM
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Originally Posted by JBarron
I would do the cam, you could probably gain a good amount of power, without reaching more dangerous cylinder pressures. Either way I would say a perfect dyno tune and the right fuel will be essential. I would not increase your boost unless you build the engine with forged components. I would not risk it unless you can afford to replace it.
My friend who is pretty knowledgeable also told me to do a cam because it would be easier on the motor rather then run more boost. So some of you guys say don't run a cam because I'd have to rev it higher and others say do cam. Here is my dyno.

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Old Aug 2, 2010 | 02:47 PM
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How do you use/plan to use this car? Street only, HPDE, etc.? In other words, you should think about what kind of powerband you want to end up with.
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Old Aug 2, 2010 | 10:34 PM
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mostly street but its not my daily driver so when I do drive it, its usually getting beat on. 4-5 drag stips visits a year.
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