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Old 01-04-2004, 05:36 PM
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Hawk told me $4000 per engine for 525 SC. If you need no parts.
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Old 01-04-2004, 05:40 PM
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Quote:
Originally posted by totalmp
We normally freshen our big HP engines at around 250-300Hrs, however we've got a few out there with 400+. The biggest key is maintenance. It is also a good idea to run octane boost in big SC engines, as fuel from the docks is usually not great.
A complete rebuild goes for about 12K, depending on condition of parts.

Steve
250-300 hrs

out of 1200 hp
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Old 01-04-2004, 07:07 PM
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Not that you have to baby them, but I have seen guys put the "sticks to the wood" and hold them there all day long. After 75 hours they wonder way the motor is hurting. Remember this is a rough environment on any engine if you run it like that all day.

I would say 3-5K depending on the setup. If done early.

No big parts
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Old 01-04-2004, 07:18 PM
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Hmmm.....there seems to be quite a variation in prices here......I was told that just doing a top end on my motors in my Gun was going to run around five thousand per motor when the time came......and these are only 454's........the prices you just quoted Scott......did these include labor....or just parts????
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Old 01-04-2004, 07:26 PM
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You know....after reading this thread again....this brings up another point I have been wondering about....I have run Amsoil in my cars in the past....but when you are changing the oil in these blower motors every ten to fifteen hours...it seems to me that you are really defeating the purpose of running synthetic in the first place......any thoughts on this???? Not to mention the cost advantage of running just a good grade oil.......
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Old 01-04-2004, 09:01 PM
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Quote:
Originally posted by Spitfire1
You know....after reading this thread again....this brings up another point I have been wondering about....I have run Amsoil in my cars in the past....but when you are changing the oil in these blower motors every ten to fifteen hours...it seems to me that you are really defeating the purpose of running synthetic in the first place......any thoughts on this???? Not to mention the cost advantage of running just a good grade oil.......

24 quarts of synthetic gets expensive!!
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Old 01-04-2004, 09:13 PM
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Quote:
Originally posted by Spitfire1
You know....after reading this thread again....this brings up another point I have been wondering about....I have run Amsoil in my cars in the past....but when you are changing the oil in these blower motors every ten to fifteen hours...it seems to me that you are really defeating the purpose of running synthetic in the first place......any thoughts on this???? Not to mention the cost advantage of running just a good grade oil.......

i know the CEO of a local refinery and he told me that these days most off the shelf oils are a synthetic blend anyway. frequent oil changes is the key to extending engine life. also chosing the proper weight.
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Old 01-04-2004, 09:33 PM
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Spitfire, whoever told you 5K an engine just to do the tops is hosing you. I could see $2500 an engine but 5K is just plain nuts.
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Old 01-04-2004, 09:37 PM
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Unfair business practices in south florida.....I highly doubt it....
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Old 01-04-2004, 11:43 PM
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No, not on our 1200's. Those we expect around 150 before a freshen. Which we feel is pretty good considering a 900SC Merc is every 50hrs.
Our 850's and 900's are the ones that are lasting the best. These engines make power very low: 5400 RPM's, and on minimal boost 3-5 lbs.
Our 750EFI, like those in Jassman's new 43 Nor Tech will go 400+, and made peak power at 5400. Our main focus is reliability.

Steve
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