What is the limit of the stock block?
May 3, 2009, 06:57 PM
#32
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i dont kow where my dad got the info from.... but some tuner brought an evoX to willowsprings and TRIED to blow the motor... it was tuned at 35psi on Q16 and after 4 days they failed at blowing it.... they tore the motor apart afterwards and said the internals were AMAZING.... if some one knows what im talking about, can u post a link to this test?
May 3, 2009, 09:55 PM
#33
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Once again these are just MY view on the 4B11 based on the things we've done and what the out come has been . The 4B11 does have some issue , some of which I'm looking into right now - but overall I like the motor a LOT more then I ever would had imagined.
Last edited by Noize; May 6, 2009 at 10:06 AM.
May 3, 2009, 10:43 PM
#34
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the post was about the stock sleeves limits not some one messing up valves and piston cause someone made a mistake everyone is human just want to not have to sleeve a block if you dont have to
May 4, 2009, 09:43 AM
#35
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Back OT,
The more that I think about what some of the tuners are putting the 4B through, I find it to be very reassuring that the motor is taking the abuse so well. When I read about Ryan Gates pounding on his car for hundreds of laps and there being no issues with the longblock...it makes me more confident about tracking my car.
I think like everyone who chimed in about the aluminum block, I had my doubts...but it seems like the engineers put together a nice piece of metal.
The more that I think about what some of the tuners are putting the 4B through, I find it to be very reassuring that the motor is taking the abuse so well. When I read about Ryan Gates pounding on his car for hundreds of laps and there being no issues with the longblock...it makes me more confident about tracking my car.
I think like everyone who chimed in about the aluminum block, I had my doubts...but it seems like the
engineers put together a nice piece of metal.
Last edited by Noize; May 6, 2009 at 10:05 AM.
May 4, 2009, 03:59 PM
#36
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Horsepower is not the killer of engines, torque is.
That being said 4b11 i dunno, "They" say that 400wtq is about the limit of the 4g63. I was running 410wtq (mustang dyno) on mine and it went in 3 months. I believe "Them" now on the 4g63.
That being said 4b11 i dunno, "They" say that 400wtq is about the limit of the 4g63. I was running 410wtq (mustang dyno) on mine and it went in 3 months. I believe "Them" now on the 4g63.
May 4, 2009, 09:54 PM
#37
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Rod failure is all we can tell so far as there is a hole in my block
Motor's not torn down yet so specifics are unknown.Things to keep in mind are that I was 442whp/410wtq at 32psi on a low reading Mustang dyno which is roughly about 492whp/460wtq on a Dynojet.
Last edited by evodood; May 5, 2009 at 03:54 PM.
May 5, 2009, 11:28 AM
#38
We don't believe the block needs to be sleeved under 600-700whp.
The stock cylinders have adequate thickness to them to support moderate power levels.
Running over 30psi boost on the stock bottom end for an extended or repeated time period will break the ring lands, shear off piston tops and break the top ring on the piston.
The thread title is "What is the limit of the 4b11 block"? So in an effort to summarize, the block is fairly strong and in our opinion able to support 600-700whp, however the stock bottom end of the engine is not set up to support boost levels in excess of 30psi as evidenced throughout case studies throughout the USA and in our own analysis of the engine we have disassembled and carefully measured.
The stock cylinders have adequate thickness to them to support moderate power levels.
Running over 30psi boost on the stock bottom end for an extended or repeated time period will break the ring lands, shear off piston tops and break the top ring on the piston.
The thread title is "What is the limit of the 4b11 block"? So in an effort to summarize, the block is fairly strong and in our opinion able to support 600-700whp, however the stock bottom end of the engine is not set up to support boost levels in excess of 30psi as evidenced throughout case studies throughout the USA and in our own analysis of the engine we have disassembled and carefully measured.
Last edited by Noize; May 5, 2009 at 05:43 PM.
May 5, 2009, 03:50 PM
#39
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There is a significant difference in 600whp with say 550wtq and 600whp with say 450wtq. Would you not agree?
As I said before it's torque that kills motors. Torque is the actual force that your motor is providing. which is what strains the components, not not the measure of said force over time, which is what your measuring with Horsepower.
Last edited by evodood; May 5, 2009 at 03:55 PM.
May 5, 2009, 04:13 PM
#40
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This thread is a circus... Its truly laughable. 45psi and holding 32psi on a stock turbo smaller than a 16g? Uh-huh.
The Evored would be hard pressed to achieve these levels with the wastegate welded shut, let alone a stock turbo smaller than the stock Evo 8-9 turbo.
We don't believe the block needs to be sleeved under 600-700whp.
The stock cylinders have adequate thickness to them to support moderate power levels.
Running over 30psi boost on the stock bottom end for an extended or repeated time period will break the ring lands, shear off piston tops and break the top ring on the piston.
Its interesting how some brag about ridiculous boost levels within this thread are the same ones that have suffered the same aforementioned fate of broken pistons.
The thread title is "What is the limit of the 4b11 block"? So in an effort to summarize, the block is fairly strong and in our opinion able to support 600-700whp, however the stock bottom end of the engine is not set up to support boost levels in excess of 30psi as evidenced throughout case studies throughout the USA and in our own analysis of the engine we have disassembled and carefully measured.
The Evored would be hard pressed to achieve these levels with the wastegate welded shut, let alone a stock turbo smaller than the stock Evo 8-9 turbo.
We don't believe the block needs to be sleeved under 600-700whp.
The stock cylinders have adequate thickness to them to support moderate power levels.
Running over 30psi boost on the stock bottom end for an extended or repeated time period will break the ring lands, shear off piston tops and break the top ring on the piston.
Its interesting how some brag about ridiculous boost levels within this thread are the same ones that have suffered the same aforementioned fate of broken pistons.
The thread title is "What is the limit of the 4b11 block"? So in an effort to summarize, the block is fairly strong and in our opinion able to support 600-700whp, however the stock bottom end of the engine is not set up to support boost levels in excess of 30psi as evidenced throughout case studies throughout the USA and in our own analysis of the engine we have disassembled and carefully measured.
) can hold? i myself is curious...tia 
Last edited by tonyboy; May 5, 2009 at 04:16 PM.
May 5, 2009, 05:04 PM
#41
Being that the bottom end is not spec'd out for high boost from the factory, running a higher flowing turbo will also allow one not to exceed a predetermined boost level while providing much more cfm's at lower boost levels. This will allow one to make much more power at the same boost levels as the larger turbo flows more air.
The stock turbo is fun and all, but when the factory hands us something smaller than previous generation Evo's there really isn't too much to get excited about.
May 5, 2009, 05:10 PM
#42
We have seen as high as 43.6psi on a stock motor EvoRed and we willfully stopped at 602whp on the 35R HTA 4g63. When he is ready to built it, we might just see how much the stock motor will put out.
Personally I think we could pull out 660whp-700whp from the stock motor.The 4b11 is newer, however we have disassembled and analyzed a few. The block is durable to an extent, however the way the pistons are set up from the factory will not allow reliable power to be extracted from it before the piston tops break off.
The 4b11 pistons are set up for low emissions, not high boost performance. It is very tight.
May 6, 2009, 05:28 AM
#45
i apologize to the thread maker for getting off track of the original post.
i am also very curious of the 4b11t's capability, i was very close to buying a X but i decided that i am going to build my car instead.
but i have to say i am very impressed with the 4b11t so far!
i am also very curious of the 4b11t's capability, i was very close to buying a X but i decided that i am going to build my car instead.
but i have to say i am very impressed with the 4b11t so far!