Need advice (and probably a motor)
#33
Lexus Test Driver
iTrader: (5)
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Have you ever cooked with a cast iron skillet and an aluminum skillet? The iron is able to keep a larger quantity of heat inside. It slowly warms up or slowly cool down. Aluminum has very rapid temperature fluctuations. Long term this fluctuation will wreck havoc on your clearances if the block does not crack.
The supercharged LS9 does not make 700hp on pump gas.
#34
Lexus Champion
iTrader: (31)
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Yea but the sleeves are steel in the 1uz and for what it may be worth I don't think the 1uz has been pushed to even find the limits at least not by any of us and think about ls1's making 800whp on pump and Hondas making 4-500whp on pump all of which are aluminum block with steel sleeves.
#37
Lexus Test Driver
iTrader: (1)
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Aluminum block engines are not good for boosting high power long term.
Have you ever cooked with a cast iron skillet and an aluminum skillet? The iron is able to keep a larger quantity of heat inside. It slowly warms up or slowly cool down. Aluminum has very rapid temperature fluctuations. Long term this fluctuation will wreck havoc on your clearances if the block does not crack.
The supercharged LS9 does not make 700hp on pump gas.
Have you ever cooked with a cast iron skillet and an aluminum skillet? The iron is able to keep a larger quantity of heat inside. It slowly warms up or slowly cool down. Aluminum has very rapid temperature fluctuations. Long term this fluctuation will wreck havoc on your clearances if the block does not crack.
The supercharged LS9 does not make 700hp on pump gas.
#38
Lexus Champion
iTrader: (31)
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There is 0 room for error at these levels so if a fp drops pressure or you get some not so great gas then yea it won't last very long but keep a close eye on things if you are running on the edge.
#39
Lexus Champion
iTrader: (12)
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http://www.evo.co.uk/carreviews/evoc...all_omega.html
One example.
There are many more if you search....
KC
One example.
There are many more if you search....
KC
#40
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I had Lextreme price me out a 4.7 block to handle 1000hp (low estimate) and it was only like 1000 dollars more than a new OEM short block. 6-7k. Of course one would then need heads and cams and intake to go along with it but still not really that bad when it comes down to it.
I have some plans and will be making (in theory) some improvements but am sticking with a 1uz.
I might start a new thread soon to get some opinions on my plans.
KC
#41
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I would love to but don't have the money. Built short blocks really aren't that bad just more than I can afford.
I had Lextreme price me out a 4.7 block to handle 1000hp (low estimate) and it was only like 1000 dollars more than a new OEM short block. 6-7k. Of course one would then need heads and cams and intake to go along with it but still not really that bad when it comes down to it.
I have some plans and will be making (in theory) some improvements but am sticking with a 1uz.
I might start a new thread soon to get some opinions on my plans.
KC
I had Lextreme price me out a 4.7 block to handle 1000hp (low estimate) and it was only like 1000 dollars more than a new OEM short block. 6-7k. Of course one would then need heads and cams and intake to go along with it but still not really that bad when it comes down to it.
I have some plans and will be making (in theory) some improvements but am sticking with a 1uz.
I might start a new thread soon to get some opinions on my plans.
KC
#43
Lexus Champion
iTrader: (31)
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Well I am kind of in the same position as you since I would really like to stick out the 1uzfe for my street car use with around 500whp but it comes down to money to be honest and I think it may just have to come down to the OTHER engine
but I figure I could build a 1uzfe for about 2,500 including machine work which would handle about 1k whp however I have some good connections and am willing to a lot of the work myself.
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#44
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Well I am kind of in the same position as you since I would really like to stick out the 1uzfe for my street car use with around 500whp but it comes down to money to be honest and I think it may just have to come down to the OTHER engine
but I figure I could build a 1uzfe for about 2,500 including machine work which would handle about 1k whp however I have some good connections and am willing to a lot of the work myself.
![Sad](https://www.clublexus.com/forums/images/smilies/sad.gif)
Pistons / Rods combo 2k
Crank probably not needed
Cams 750 for regrinds 1200 for Kelfords
You could easily spend a couple of grand on the heads alone
Not to mention machine work, gasket sets, a lots of misc stuff..
I think a stock early block can handle close to 500whp with a REAL careful tune. I'm at about 400 I think. I think the only reason I killed it was because I got too timing happy.....
KC
#45
Lexus Champion
iTrader: (31)
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I thought about my own build. I am a Toyota tech and quite capable of it. But even just to buy some high quality parts is expensive.
Pistons / Rods combo 2k
Crank probably not needed
Cams 750 for regrinds 1200 for Kelfords
You could easily spend a couple of grand on the heads alone
Not to mention machine work, gasket sets, a lots of misc stuff..
I think a stock early block can handle close to 500whp with a REAL careful tune. I'm at about 400 I think. I think the only reason I killed it was because I got too timing happy.....
KC
Pistons / Rods combo 2k
Crank probably not needed
Cams 750 for regrinds 1200 for Kelfords
You could easily spend a couple of grand on the heads alone
Not to mention machine work, gasket sets, a lots of misc stuff..
I think a stock early block can handle close to 500whp with a REAL careful tune. I'm at about 400 I think. I think the only reason I killed it was because I got too timing happy.....
KC
You were on a small rod block correct?
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