K24/K20 vs. 4G64 max rpms???
I wonder why the evo world, and many of the import cars, haven't seen aftermarket heads yet? The domestic market stuff is awash with head manufactures/CNC porting companies. Why sin't this the case with the Import guys?
all im thinking is if people want a head that flows massive amounts then you get a company to design one using the OEM head as a starting point. You make the ports larger, the valves bigger, a better flowing port that has less enphersis on ermissions, basically a good performance cylinder head.
Just thinking outside the box a little here.
Chris.
all im thinking is if people want a head that flows massive amounts then you get a company to design one using the OEM head as a starting point. You make the ports larger, the valves bigger, a better flowing port that has less enphersis on ermissions, basically a good performance cylinder head.
Just thinking outside the box a little here.
Chris.
you bring up a good point dart sells b series blocks they were sleeved and had larger water jackets for better cooling and are closed deck design. endyn was also suppose to produce there own head for honda b series blocks i am not sure if they did or not i think companys stay away from it cause there is not a large profit as shown with the b series dark blocks people still buy a cheap $100 ls b series block and have it sleeved by golden eagle or some comapany for $1000 and save $900 over a dark block.
https://www.evolutionm.net/forums/ev...head-tech.html
The early evo heads were not so great from the factory. Here you go
https://www.evolutionm.net/forums/ev...head-tech.html
https://www.evolutionm.net/forums/ev...head-tech.html
It's ridiculous how the gang mentality seems to prevail over any measure of common sense.
The designers at Mitsu and Honda don't give a damn what anyone here likes or dislikes. They had a job to do based upon what they felt was important in the eyes of the average consumer, and they had budgets. Nothing more, nothing less.
The 4G63 has a robust bottom end, decent oiling, and a high-velocity head for good midrange VE. It's crankshaft oiling scheme and shallow sump are not designed for high rpm oiling efficiency, but works well enough. It's designed for low and midrange rpm efficiency to create good torque, anticipates high loading (heavy chassis), while delivering sharp throttle response and good fuel economy. It's balance shafts are intended to minimize vibrations to make a more pleasant experience to the average driver.
The Honda K-series appears to be designed to function in a similar capacity to the 4G63 (i.e. with heavier cars in mind), doesn't have the big mains girdle and oiling efficiency of the 4G63, but has superior head flow capability that give it certain high rpm VE advantages. Functionally however, it seems to have more in common with a 4G63 than its B-series predecessors.
The Honda F-series appears to be designed such that it doesn't give a hoot about low speed and midrange response, but it is designed to push VE well to the right and generate high specific output and lower piston speeds at high rpm. It's intended for a lighter chassis, has a very enviable cylinder head, and an oiling system that is well suited for the expected use.
These things are what they are. We didn't make them what they are. We're just consumers.
The designers at Mitsu and Honda don't give a damn what anyone here likes or dislikes. They had a job to do based upon what they felt was important in the eyes of the average consumer, and they had budgets. Nothing more, nothing less.
The 4G63 has a robust bottom end, decent oiling, and a high-velocity head for good midrange VE. It's crankshaft oiling scheme and shallow sump are not designed for high rpm oiling efficiency, but works well enough. It's designed for low and midrange rpm efficiency to create good torque, anticipates high loading (heavy chassis), while delivering sharp throttle response and good fuel economy. It's balance shafts are intended to minimize vibrations to make a more pleasant experience to the average driver.
The Honda K-series appears to be designed to function in a similar capacity to the 4G63 (i.e. with heavier cars in mind), doesn't have the big mains girdle and oiling efficiency of the 4G63, but has superior head flow capability that give it certain high rpm VE advantages. Functionally however, it seems to have more in common with a 4G63 than its B-series predecessors.
The Honda F-series appears to be designed such that it doesn't give a hoot about low speed and midrange response, but it is designed to push VE well to the right and generate high specific output and lower piston speeds at high rpm. It's intended for a lighter chassis, has a very enviable cylinder head, and an oiling system that is well suited for the expected use.
These things are what they are. We didn't make them what they are. We're just consumers.
I am going to end this discussion here. Thank you all for the intelligent discussion. I think Ted, per usual, summed it up nicely.
It's ridiculous how the gang mentality seems to prevail over any measure of common sense.
The designers at Mitsu and Honda don't give a damn what anyone here likes or dislikes. They had a job to do based upon what they felt was important in the eyes of the average consumer, and they had budgets. Nothing more, nothing less.
The 4G63 has a robust bottom end, decent oiling, and a high-velocity head for good midrange VE. It's crankshaft oiling scheme and shallow sump are not designed for high rpm oiling efficiency, but works well enough. It's designed for low and midrange rpm efficiency to create good torque, anticipates high loading (heavy chassis), while delivering sharp throttle response and good fuel economy. It's balance shafts are intended to minimize vibrations to make a more pleasant experience to the average driver.
The Honda K-series appears to be designed to function in a similar capacity to the 4G63 (i.e. with heavier cars in mind), doesn't have the big mains girdle and oiling efficiency of the 4G63, but has superior head flow capability that give it certain high rpm VE advantages. Functionally however, it seems to have more in common with a 4G63 than its B-series predecessors.
The Honda F-series appears to be designed such that it doesn't give a hoot about low speed and midrange response, but it is designed to push VE well to the right and generate high specific output and lower piston speeds at high rpm. It's intended for a lighter chassis, has a very enviable cylinder head, and an oiling system that is well suited for the expected use.
These things are what they are. We didn't make them what they are. We're just consumers.
The designers at Mitsu and Honda don't give a damn what anyone here likes or dislikes. They had a job to do based upon what they felt was important in the eyes of the average consumer, and they had budgets. Nothing more, nothing less.
The 4G63 has a robust bottom end, decent oiling, and a high-velocity head for good midrange VE. It's crankshaft oiling scheme and shallow sump are not designed for high rpm oiling efficiency, but works well enough. It's designed for low and midrange rpm efficiency to create good torque, anticipates high loading (heavy chassis), while delivering sharp throttle response and good fuel economy. It's balance shafts are intended to minimize vibrations to make a more pleasant experience to the average driver.
The Honda K-series appears to be designed to function in a similar capacity to the 4G63 (i.e. with heavier cars in mind), doesn't have the big mains girdle and oiling efficiency of the 4G63, but has superior head flow capability that give it certain high rpm VE advantages. Functionally however, it seems to have more in common with a 4G63 than its B-series predecessors.
The Honda F-series appears to be designed such that it doesn't give a hoot about low speed and midrange response, but it is designed to push VE well to the right and generate high specific output and lower piston speeds at high rpm. It's intended for a lighter chassis, has a very enviable cylinder head, and an oiling system that is well suited for the expected use.
These things are what they are. We didn't make them what they are. We're just consumers.
Thread
Thread Starter
Forum
Replies
Last Post
wild01ride
For Sale - Cars For Sale
29
Apr 20, 2013 05:57 AM
vince_w2004
For Sale - Cars For Sale
32
Mar 11, 2011 11:55 AM
Morgan Evo
Evo X Engine / Turbo / Drivetrain
11
Jul 5, 2009 08:02 AM
