Cost For Ported Heads?
12-27-2010, 11:04 AM
#11
5th Gear Member
Join Date: Dec 2006
Location: Redding, CA
Posts: 4,552
That's odd.
Im not saying you are lying or mistaken but I read it from Muscle Mustangs and also heard it from a mechanic I know who is VERY good at his job working on Mustangs.
In theory the delete plates are supposed to make your intake flow better by removing the butterflies from the CMCV system.According to Ford, it helps by giving you more torque at lower RPMs, then opening up as the flow increases. Remove them and you supposedly lose that torque.
He said it was kind of a trade and so did the mag.
I have read this numerous times in different mags and articles as well.
Im not saying you are lying or mistaken but I read it from Muscle Mustangs and also heard it from a mechanic I know who is VERY good at his job working on Mustangs.
In theory the delete plates are supposed to make your intake flow better by removing the butterflies from the CMCV system.According to Ford, it helps by giving you more torque at lower RPMs, then opening up as the flow increases. Remove them and you supposedly lose that torque.
He said it was kind of a trade and so did the mag.
I have read this numerous times in different mags and articles as well.
THe CMCV system restricts flow of air, but increases the velocity which inturn helps with low end torque and most importantly (what I think) fuel economy. Faster flowing air mix air and fuel better together and it seems would cause a better combustion mixture. Alot of the things Ford engineers will says is that they system will low end torque if all else stays the same. Since all of our cars get sustom tunes, better air intakes, free flowing exhaust and bigger cams, all of those thing combined with better flowing intake manifold will be better.
SO let's say you do loose torgue below 3k rpms. How much is it going to be 5 maybe 10? You don't launch our cars below 3k anyways and you have up until nearly 7k before you need to shift.
I vote yes for delete plates. They are easy. Even blacksmoke could install them!
12-27-2010, 12:15 PM
#12
4th Gear Member
Join Date: Jan 2007
Location: Palm Beach to South Carolina
Posts: 1,567
12-27-2010, 04:46 PM
#13
2nd Gear Member
Join Date: Nov 2007
Location: CO
Posts: 439
The cost of the heads is only worth it if you are going to go BIG with a built motor and/or forced induction. The stock 3v heads flow just fine for the power level the stock internals can handle. Sure, the top end gets marginally better, but the low end torque loss is not an even trade off. As has already been stated, if you are set on installing p&p'd heads, you are going to want a pretty aggresive cam to get the most of out them.....compounding the low end torque loss even further.
How you drive the car makes a difference too. If this is a daily driver where the rpm's are rarely north of 5000, skip the heads. If you are a weekend trackstar and want to get the most out of the car N/A, they might be a worthy purchase.
I regret spending the money on heads the way I did. Granted, I have bigger plans for my motor, but until I actually follow through on those plans, I feel like I could have put the money to better use. I have posted my before and after dyno on the forum several times. I'm not talking out of my butt when I talk about the low end torque loss.
How you drive the car makes a difference too. If this is a daily driver where the rpm's are rarely north of 5000, skip the heads. If you are a weekend trackstar and want to get the most out of the car N/A, they might be a worthy purchase.
I regret spending the money on heads the way I did. Granted, I have bigger plans for my motor, but until I actually follow through on those plans, I feel like I could have put the money to better use. I have posted my before and after dyno on the forum several times. I'm not talking out of my butt when I talk about the low end torque loss.
12-27-2010, 07:41 PM
#14
The Paranoid One
Thread Starter
Join Date: Apr 2006
Location: Texas
Posts: 5,320
Well, unfortunately I wont be able to get the delete plates just yet.
The travel cost, plus the dyno tune adjustments I am getting, plus the
deletes and install would end up costing me more than I can dish out right now.
So I will have to wait a little bit on the deletes and just get my
engine light and hunting RPM issue fixed with the tune for now.
Deletes will be next on my list though.
Hopefully by spring I will be able to do them and perhaps UDP's.
Have'nt made up my mind on the UDP's because of the mixed opinions I have
gotten on them.
The travel cost, plus the dyno tune adjustments I am getting, plus the
deletes and install would end up costing me more than I can dish out right now.
So I will have to wait a little bit on the deletes and just get my
engine light and hunting RPM issue fixed with the tune for now.
Deletes will be next on my list though.
Hopefully by spring I will be able to do them and perhaps UDP's.
Have'nt made up my mind on the UDP's because of the mixed opinions I have
gotten on them.
12-27-2010, 09:02 PM
#15
Here is my thought on that.
THe CMCV system restricts flow of air, but increases the velocity which inturn helps with low end torque and most importantly (what I think) fuel economy. Faster flowing air mix air and fuel better together and it seems would cause a better combustion mixture. Alot of the things Ford engineers will says is that they system will low end torque if all else stays the same. Since all of our cars get sustom tunes, better air intakes, free flowing exhaust and bigger cams, all of those thing combined with better flowing intake manifold will be better.
SO let's say you do loose torgue below 3k rpms. How much is it going to be 5 maybe 10? You don't launch our cars below 3k anyways and you have up until nearly 7k before you need to shift. Blacksmoke they are EASY to install, take about an hour.
I vote yes for delete plates. They are easy. Even blacksmoke could install them!
THe CMCV system restricts flow of air, but increases the velocity which inturn helps with low end torque and most importantly (what I think) fuel economy. Faster flowing air mix air and fuel better together and it seems would cause a better combustion mixture. Alot of the things Ford engineers will says is that they system will low end torque if all else stays the same. Since all of our cars get sustom tunes, better air intakes, free flowing exhaust and bigger cams, all of those thing combined with better flowing intake manifold will be better.
SO let's say you do loose torgue below 3k rpms. How much is it going to be 5 maybe 10? You don't launch our cars below 3k anyways and you have up until nearly 7k before you need to shift. Blacksmoke they are EASY to install, take about an hour.
I vote yes for delete plates. They are easy. Even blacksmoke could install them!
. But I have an email from JDM and love it 12.7 MPH on 3.31 gears with factory MPG is fine by me.
12-27-2010, 11:41 PM
#17
The Paranoid One
Thread Starter
Join Date: Apr 2006
Location: Texas
Posts: 5,320
My problems right now demand that I get the tune fixed.
A canned tune is REALLY not what I need right now because
I need some data logging etc. done to find out what my tune problems are.
I wish I could just do both at the same time but
I can't afford both.
A canned tune is REALLY not what I need right now because
I need some data logging etc. done to find out what my tune problems are.
I wish I could just do both at the same time but
I can't afford both.
12-30-2010, 10:50 AM
#18
5th Gear Member
Join Date: Dec 2006
Location: Redding, CA
Posts: 4,552
Doing it that way you wil need an AF gauge most likely (depending). With FI, they usually get close, NA they get very close.
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