Weistec M156 CNC ported heads released
#1
Former Vendor of MBWorld
Thread Starter
Weistec M156 CNC ported heads released
Weistec Engineering announces the first CNC port solution for the M156 heads.
Key Features:
Please visit our website for further information!
http://www.weistec.com/m156engine.html
Key Features:
- 5-axis CNC machined
- 397.88 CFM Intake flow
- 257.81 CFM Exhaust flow
- Fully assembled, Read to run heads
- Custom ground factory 40mm intake valves
- Custom ground factory 33mm exhaust valves
Please visit our website for further information!
http://www.weistec.com/m156engine.html
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#8
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2011 C63 "The Beast"
#9
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GT3
I could justify the $5k if the gains are there but no way would I buy into it going by a cfm number which is like coparing dynos on different days. At the very least do a before and after dyno on the same day, same car, and list the mods. Saying heads "CAN" add whp is misleading. Did yours add 40-50 whp? Where did it add it? What kind of losses where seen if any? Dyno sheet? Im interested but need more info please...
Last edited by Most-Wanted; 03-23-2011 at 01:28 AM.
#10
@ Weistec,
How do these heads affect the hp and tq curves? Would you be willing to post the dyno graph? I'd be interested to see what the changes look like.
And did you do your testing for these ported heads with an otherwise completely stock C63?
Thanks.
How do these heads affect the hp and tq curves? Would you be willing to post the dyno graph? I'd be interested to see what the changes look like.
And did you do your testing for these ported heads with an otherwise completely stock C63?
Thanks.
#11
MBWorld Fanatic!
Did I read there website right? There core exchange policy looks backwards? Send them your heads wait 8 days get your heads back? Isn't core exchange mean get the new heads tear down car install send stock ones back within 7 days? Or in I wrong
#12
MBWorld Fanatic!
#14
Super Member
Flow benches are nothing like a dyno and therefore shouldn't be compared to each other. When an experienced customer is looking for a set of heads they want to know these numbers. You make it sound as if it's a crap shoot on how much these will flow. Also the fact that they're CNC'd means they will have dead consistency throughout each runner and therefore each head.
#15
Senior Member
mercedes tax is awful high. look what you can get for a Ford, NO CORE REQUIRED..
Our heads are based off of the 2003-04 Cobra castings with the updated 8 thread design. We sell the heads outright with no cores required. Do the other heads you listed include the castings? The castings themselves cost more than some of the prices you listed.
Specs are as follows:
5 axis CNC machined in-house
Fully assembled w/o camshafts
Intake flow rate 330 CFM
Exhaust flow rate 275 CFM
Custom valve job
Custom ground stainless oversize intake valves
Custom ground stainless oversize exhaust valves
Bronze guides
Ford valve seals, retainers, and locks
Livernois exclusive single coil valve springs good to ~ .600 lift
Specs are as follows:
5 axis CNC machined in-house
Fully assembled w/o camshafts
Intake flow rate 330 CFM
Exhaust flow rate 275 CFM
Custom valve job
Custom ground stainless oversize intake valves
Custom ground stainless oversize exhaust valves
Bronze guides
Ford valve seals, retainers, and locks
Livernois exclusive single coil valve springs good to ~ .600 lift
#16
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GT3
That's exactly what I said. You can't compare cfm numbers. A cfm number is a gimmick just for that reason. Most experienced customers want to know flow increase at multiple positions. Don't open a can you know nothing about. I build 800-1000 whp 4 cylinders. I know three of the best head guys in the world and they don't even post cfm numbers their post says heads can make 40-50 whp but they aren't posting any info to support that their heads make 50 whp. Posting a cfm number that can't be compared to another flow bench is also misleading which is what I said. But thanks for confirming my post
Flow benches are nothing like a dyno and therefore shouldn't be compared to each other. When an experienced customer is looking for a set of heads they want to know these numbers. You make it sound as if it's a crap shoot on how much these will flow. Also the fact that they're CNC'd means they will have dead consistency throughout each runner and therefore each head.
#18
Are the OEM heads really that restrictive?
#19
Former Vendor of MBWorld
Thread Starter
Thanks for the interest guys. We are currently installing a few sets on various different setups, one being a completely stock C63, the other being a supercharged car with upgraded camshafts. Our goal with these cars is to get hard numbers. The challenge in stating a power number with these heads is the fact that there are many variables that go along with them such as tuning, exhaust, etc.
We also understand the difference in pricing. There are many reasons behind this, and the biggest being risk of damage during the machining process. When machining these heads in the mill, a technician is standing behind the glass watching every tool path to assure a perfect machine. When machining a modular (Ford) head or LS head the machinist typically steps away from the machine. There is just no risk when the head is $400 brand new from the factory.
Please let us know if we can assist with anything else. Thanks.
We also understand the difference in pricing. There are many reasons behind this, and the biggest being risk of damage during the machining process. When machining these heads in the mill, a technician is standing behind the glass watching every tool path to assure a perfect machine. When machining a modular (Ford) head or LS head the machinist typically steps away from the machine. There is just no risk when the head is $400 brand new from the factory.
Please let us know if we can assist with anything else. Thanks.
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2008 A8L, 2002 996TT X50, 2009 X5
#21
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That's exactly what I said. You can't compare cfm numbers. A cfm number is a gimmick just for that reason. Most experienced customers want to know flow increase at multiple positions. Don't open a can you know nothing about. I build 800-1000 whp 4 cylinders. I know three of the best head guys in the world and they don't even post cfm numbers their post says heads can make 40-50 whp but they aren't posting any info to support that their heads make 50 whp. Posting a cfm number that can't be compared to another flow bench is also misleading which is what I said. But thanks for confirming my post
Link
Don't open a can you know nothing about
#22
Thanks for the interest guys. We are currently installing a few sets on various different setups, one being a completely stock C63, the other being a supercharged car with upgraded camshafts. Our goal with these cars is to get hard numbers. The challenge in stating a power number with these heads is the fact that there are many variables that go along with them such as tuning, exhaust, etc.
We also understand the difference in pricing. There are many reasons behind this, and the biggest being risk of damage during the machining process. When machining these heads in the mill, a technician is standing behind the glass watching every tool path to assure a perfect machine. When machining a modular (Ford) head or LS head the machinist typically steps away from the machine. There is just no risk when the head is $400 brand new from the factory.
Please let us know if we can assist with anything else. Thanks.
We also understand the difference in pricing. There are many reasons behind this, and the biggest being risk of damage during the machining process. When machining these heads in the mill, a technician is standing behind the glass watching every tool path to assure a perfect machine. When machining a modular (Ford) head or LS head the machinist typically steps away from the machine. There is just no risk when the head is $400 brand new from the factory.
Please let us know if we can assist with anything else. Thanks.
Are the cams, blower specific cams?
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E63 P30, CL500 Sport
Thanks for the interest guys. We are currently installing a few sets on various different setups, one being a completely stock C63, the other being a supercharged car with upgraded camshafts. Our goal with these cars is to get hard numbers. The challenge in stating a power number with these heads is the fact that there are many variables that go along with them such as tuning, exhaust, etc.
We also understand the difference in pricing. There are many reasons behind this, and the biggest being risk of damage during the machining process. When machining these heads in the mill, a technician is standing behind the glass watching every tool path to assure a perfect machine. When machining a modular (Ford) head or LS head the machinist typically steps away from the machine. There is just no risk when the head is $400 brand new from the factory.
Please let us know if we can assist with anything else. Thanks.
We also understand the difference in pricing. There are many reasons behind this, and the biggest being risk of damage during the machining process. When machining these heads in the mill, a technician is standing behind the glass watching every tool path to assure a perfect machine. When machining a modular (Ford) head or LS head the machinist typically steps away from the machine. There is just no risk when the head is $400 brand new from the factory.
Please let us know if we can assist with anything else. Thanks.
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C63 Black Series
Sir,
i will get the heads + the supercharge if you will exchange with my heads, and make me a good deal
i have MHP LT Headers
Carbonio Air intake and thinking to change them to renntech
MHP Thermostat
MHP Cams
MHP V3 Ecu tune
what should you do about the tune if i order the heads and the SC?
i will get the heads + the supercharge if you will exchange with my heads, and make me a good deal
i have MHP LT Headers
Carbonio Air intake and thinking to change them to renntech
MHP Thermostat
MHP Cams
MHP V3 Ecu tune
what should you do about the tune if i order the heads and the SC?
#25
Former Vendor of MBWorld
Thread Starter
They are not blower specific cams. Other 63 models will have similar net gains to an untouched C63. We will post results soon. Thanks again.
Last edited by Weistec; 03-24-2011 at 05:32 PM.