Aluminium Block
11-02-2007, 08:14 PM
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Aluminium Block
^ WIll that be a problem on the high boost 20psi new LNF engine? THis is my only concern on this car. Even the new 1.8 on the Astra uses the iron block as is the astra turbo vxr 2.0.
11-02-2007, 08:15 PM
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11-02-2007, 08:17 PM
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11-02-2007, 08:23 PM
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why do you think it would be a problem?
its lighter it expands and contracts faster, gets rid of heat faster. i think all smaller cars should use all the Aluminium they can.
i see you changed the message....lol
i dont really know much about turbos but i really dont think gm would put out something that was going to blow up, if they did.. it will have a 100,000 mile waranty.
its lighter it expands and contracts faster, gets rid of heat faster. i think all smaller cars should use all the Aluminium they can.
i see you changed the message....lol
i dont really know much about turbos but i really dont think gm would put out something that was going to blow up, if they did.. it will have a 100,000 mile waranty.
Last edited by widebody_balt_ss; 11-02-2007 at 08:23 PM. Reason: Automerged Doublepost
11-02-2007, 08:27 PM
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why do you think it would be a problem?
its lighter it expands and contracts faster, gets rid of heat faster. i think all smaller cars should use all the Aluminium they can.
i see you changed the message....lol
i dont really know much about turbos but i really dont think gm would put out something that was going to blow up, if they did.. it will have a 100,000 mile waranty.
its lighter it expands and contracts faster, gets rid of heat faster. i think all smaller cars should use all the Aluminium they can.
i see you changed the message....lol
i dont really know much about turbos but i really dont think gm would put out something that was going to blow up, if they did.. it will have a 100,000 mile waranty.
Honda engines are aluminium and also open deck, so they often blow up.
11-02-2007, 09:01 PM
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Just for the record
All the ECOTEC motors have Aluminum blocks.
I don't understand the questioning of "blowing" the block. If it had very thin cylinder walls and not sleeved, I could maybe understand but if I remember correctly, all the ECOTEC motors are sleeved and they aren't danty and thin blocks either.
There are different reasons why a engine will blow and 9 times out of 10, it's not because of the block itself but other contributing factors. If a rod goes through the block, it's not because the block is weak, it's because something caused the connecting rod to stop it's normal function (more than likely a very large detonation).
All the ECOTEC motors have Aluminum blocks.
I don't understand the questioning of "blowing" the block. If it had very thin cylinder walls and not sleeved, I could maybe understand but if I remember correctly, all the ECOTEC motors are sleeved and they aren't danty and thin blocks either.
There are different reasons why a engine will blow and 9 times out of 10, it's not because of the block itself but other contributing factors. If a rod goes through the block, it's not because the block is weak, it's because something caused the connecting rod to stop it's normal function (more than likely a very large detonation).
11-03-2007, 03:15 AM
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The bottom line is, the benefits of an aluminum block far out way the disadvantages compared to an iron block. With a well designed turbo setup, it wont matter if the block is aluminum or not. If your motor blew up and you claim its because of the aluminum block, its an excuse. As long as you can get the head bolted down, and keep the engine cool and not warp, everything will work much better compared to an iron block. The cylinder liners are made out of iron for a reason. Not to mention the cooling properties of aluminum allow higher compression levels. As NJHK said, more commonly what happens is people keep the stock bottom end when running high levels of boost and pay the price. A connecting rod breaks, and pounds a hole in the block. This can happen regardless if you use aluminum or iron.
FYI: a Top fuel dragster uses a billet-aluminum block (you know, the 8,000HP machines that run 4 seconds in the quarter mile), and although billet is much stronger (and more expensive) compared to a casting, it is none the less made out of aluminum.
FYI: a Top fuel dragster uses a billet-aluminum block (you know, the 8,000HP machines that run 4 seconds in the quarter mile), and although billet is much stronger (and more expensive) compared to a casting, it is none the less made out of aluminum.
11-03-2007, 09:05 AM
#11
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The bottom line is, the benefits of an aluminum block far out way the disadvantages compared to an iron block. With a well designed turbo setup, it wont matter if the block is aluminum or not. If your motor blew up and you claim its because of the aluminum block, its an excuse. As long as you can get the head bolted down, and keep the engine cool and not warp, everything will work much better compared to an iron block. The cylinder liners are made out of iron for a reason. Not to mention the cooling properties of aluminum allow higher compression levels. As NJHK said, more commonly what happens is people keep the stock bottom end when running high levels of boost and pay the price. A connecting rod breaks, and pounds a hole in the block. This can happen regardless if you use aluminum or iron.
FYI: a Top fuel dragster uses a billet-aluminum block (you know, the 8,000HP machines that run 4 seconds in the quarter mile), and although billet is much stronger (and more expensive) compared to a casting, it is none the less made out of aluminum.
FYI: a Top fuel dragster uses a billet-aluminum block (you know, the 8,000HP machines that run 4 seconds in the quarter mile), and although billet is much stronger (and more expensive) compared to a casting, it is none the less made out of aluminum.
Thank You
Last edited by NJHK; 11-03-2007 at 09:05 AM. Reason: Automerged Doublepost
11-03-2007, 06:40 PM
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Do some research first before you post about worrying about an aluminum block. If the 1450 hp ecotec (aluminum block/head) can handle 52 psi and 10.8:1 compression, I wouldn't be worried about 22 psi 
11-03-2007, 06:51 PM
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11-03-2007, 07:01 PM
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Its all about construction, not material. If you have an excellent aluminum block, then it will be just as strong as an iron block. Ecotec vs. 4G63. Ones aluminum, ones iron, they can block handle the same amount of power.
11-03-2007, 07:15 PM
#20
When was the last time anyone has heard of a block failing?
The problem with aluminum is that is expands really fast and can't handle heats like iron can, but does that make iron>aluminum?
Absolutely not. For turbocharging why is a cast iron block better? If the heads are still aluminum you still have problems and you are still going to have overall problems if you overheat(I know damn well valves aren't cast iron and even if they were, something with a smaller solute/amount of mass is going to heat up and expand faster anyways).
Yes those motors of the past were cast iron blocks... most motors were back in the day. Cast iron blocks aren't around too much anymore and with today's cooling systems on vehicles the weight savings of having an aluminum block car increase performance overall.
There is a reason manufacturers are using aluminum and I don't believe it is because it is cheaper.
What makes a 4G63's stock block better than a stock ecotec block? Most blocks in todays cars are not the weakpoint...and even the 4G63 block will not hold up from a rod going through it.
The problem with aluminum is that is expands really fast and can't handle heats like iron can, but does that make iron>aluminum?
Absolutely not. For turbocharging why is a cast iron block better? If the heads are still aluminum you still have problems and you are still going to have overall problems if you overheat(I know damn well valves aren't cast iron and even if they were, something with a smaller solute/amount of mass is going to heat up and expand faster anyways).
Yes those motors of the past were cast iron blocks... most motors were back in the day. Cast iron blocks aren't around too much anymore and with today's cooling systems on vehicles the weight savings of having an aluminum block car increase performance overall.
There is a reason manufacturers are using aluminum and I don't believe it is because it is cheaper.
What makes a 4G63's stock block better than a stock ecotec block? Most blocks in todays cars are not the weakpoint...and even the 4G63 block will not hold up from a rod going through it.
11-03-2007, 07:41 PM
#23
Who cares really?
Oh noes!
Some mitsubishi block is stronger than a chevy block!
Why can't discussions stay discussions?
Every discussion becomes a who's e-***** is bigger?!?!!?
Why is the 4G so much stronger than the eco block? Oh right God up there doesn't need to explain himself, it must be because it's iron, get the **** outta here...and the new LNF runs the 1/4 in any car in 3 seconds and makes 2837432984732987 HP and has a top speed of lightspeed plus one.
It is a fact because I say so.
Oh noes!
Some mitsubishi block is stronger than a chevy block!
Why can't discussions stay discussions?
Every discussion becomes a who's e-***** is bigger?!?!!?
Why is the 4G so much stronger than the eco block? Oh right God up there doesn't need to explain himself, it must be because it's iron, get the **** outta here...and the new LNF runs the 1/4 in any car in 3 seconds and makes 2837432984732987 HP and has a top speed of lightspeed plus one.
It is a fact because I say so.
11-03-2007, 10:08 PM
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You better know you are a new member and learn to watch your mouth. Don't talk so loud when you don't even know the obvious. NO I haven't seen a new Evo race an evo9.
11-03-2007, 11:27 PM
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Dude whats your big problem. All you guys need to calm down. You know how many busted ass 4g63s I have around. Yesterday I pulled a rod out of the side of a Galant 4g63. Its never the blocks. Its always some other weak part going through the block. If you want to argue a point, maybe you should focus on pistons. Thats where you problem lies. Both 4g63s and ecotecs have very weak stock pistons. Correct me if I am wrong but I do believe that the aluminum block ecotec is dominating the professional world of fwd drag cars.