MHP Longtube Pics!
Thread Starter
Banned
Joined: Sep 2008
Posts: 89
Likes: 0
several
MHP Longtube Pics!
A few teaser shots of our new C63 longtubes. This is our own C63 and we've been tweaking a test set for a CLS63 out in CA based on dimensions he's given us.
Anyway, these headers have 1 7/8" primaries with 3" high velocity merge collectors, your choice of high flow metallic substrate cats and/or off-road mids--swapping from catted to O/R is a ten minute job. The system is all 304/316 stainless comes with 02 extensions and has a lifetime warranty on everything included in the kit.
One you remove the plastic pan underneath and remove the OEM exhaust/manifolds install time is literally under 60 seconds per side. No dropping of the trans, or lifting the engine as is necessary with some other makes/models of vehicles.
Pics of the rest of the full race exhaust (3" X-pipe, resonators and mufflers) will be posted shortly and will be on for the MIR track rental on March 1st.
Paired with v3 tuning we expect to see 480-500rw SAE on 93 octane with the stock wheels/tires. We'll also do a 100 octane dyno post race (same tune, just higher quality fuel).
There will be plenty of HD videos & sound clips to go around from MIR with us bringing eight tuned vehicles: 3 C63s, E63, M5, and three cars tuned by MHP and built by TTM a M6, S63, and CLK 63 BS.
The goal is 480-500rwhp SAE with our v3 ECU/TCU Tuning, our new full exhaust, carbon fiber airboxes/filters, and our 180 T-stat--stock longblock + intake, N/A.
We ran 11.59@119.75 with ~440rwhp/408rwtq SAE last time out. Track results coming March 1st. :beer:
Anyway, these headers have 1 7/8" primaries with 3" high velocity merge collectors, your choice of high flow metallic substrate cats and/or off-road mids--swapping from catted to O/R is a ten minute job. The system is all 304/316 stainless comes with 02 extensions and has a lifetime warranty on everything included in the kit.
One you remove the plastic pan underneath and remove the OEM exhaust/manifolds install time is literally under 60 seconds per side. No dropping of the trans, or lifting the engine as is necessary with some other makes/models of vehicles.
Pics of the rest of the full race exhaust (3" X-pipe, resonators and mufflers) will be posted shortly and will be on for the MIR track rental on March 1st.
Paired with v3 tuning we expect to see 480-500rw SAE on 93 octane with the stock wheels/tires. We'll also do a 100 octane dyno post race (same tune, just higher quality fuel).
There will be plenty of HD videos & sound clips to go around from MIR with us bringing eight tuned vehicles: 3 C63s, E63, M5, and three cars tuned by MHP and built by TTM a M6, S63, and CLK 63 BS.
The goal is 480-500rwhp SAE with our v3 ECU/TCU Tuning, our new full exhaust, carbon fiber airboxes/filters, and our 180 T-stat--stock longblock + intake, N/A.
We ran 11.59@119.75 with ~440rwhp/408rwtq SAE last time out. Track results coming March 1st. :beer:
Last edited by YNOT600; Feb 17, 2009 at 06:21 PM.
Thread Starter
Banned
Joined: Sep 2008
Posts: 89
Likes: 0
several
Initial GP price with cats shipped to your door (lower 48) $3950. Lifetime warranty on materails/workmanship on everything included. Optional ceramic coating, $350. We don't recommend it and feel it's a waste of $. I think a lot of the difference in size is due to the pics, the bump to fit the mid pipes is to accomodate special 3" ID cats, the perceived "neckdown" is actually 3".
This was done for a reason. It's all about the design of the collectors.
One other thing, this is a preproduction set meaning the production pieces will look even better appearance wise.
Thank You
Tony
Former Vendor of MBWorld
Joined: Jan 2007
Posts: 3,193
Likes: 3
From: Glendale Arizona
C55,SL55,C63
Those are really some of the best looking longtubes i've seen in a while. TIG welds + mandrel bend pipe = Winning combo.
Tell You what. When half the forum takes a crap on MHP last week this is how you bounce back. great looking product.
would love to see what these headers gain over baseline.
Tell You what. When half the forum takes a crap on MHP last week this is how you bounce back. great looking product.
would love to see what these headers gain over baseline.
Trending Topics
MBWorld Fanatic!
Joined: May 2007
Posts: 1,793
Likes: 44
From: San Diego
2004 E55
If that pinch point is 3" then what size are the primaries, 2"? I'm not talking ish, as I think they are good looking headers, but I want to get a better understanding of why you guys chose that particular collector design.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: Aug 2008
Posts: 1,291
Likes: 1
From: N.Jersey and New York, stationed in Germany
W164 ML500,SMART For two,1994 C280(5speed manual) 1999 C230k station wagon
Yeah what he said, when is Evosport letting Andy back on?
Thread Starter
Banned
Joined: Sep 2008
Posts: 89
Likes: 0
several
We went with this design as 1 7/8" primaries are the optimal diameter for a 6.2L engine with 40/33mm valves spinning to 7500rpm (post tune) with the type of flow we're seeing on the bench. Anyone that's worked with headers long enough will tell you the design of the collectors is much more important than equal length primaries. Equal length primaries show no gains (even then it's questionable) until past 700hp, more important is primary diameter, and most importantly the collectors.
Those are really some of the best looking longtubes i've seen in a while. TIG welds + mandrel bend pipe = Winning combo.
Tell You what. When half the forum takes a crap on MHP last week this is how you bounce back. great looking product.
would love to see what these headers gain over baseline.
Tell You what. When half the forum takes a crap on MHP last week this is how you bounce back. great looking product.
would love to see what these headers gain over baseline.
He was suspended for 30 days, not sure how much time he has left.
Plenty of HD vids/clips otw, come to MIR and you can hear it in person on March 1st.
Thank you!
Thank You
Tony
MBWorld Fanatic!
Joined: May 2007
Posts: 1,793
Likes: 44
From: San Diego
2004 E55
Primaries are 1 7/8", the collector "pinch points" are a tad under 3" (remeasured again today while I was at the shop sorry about what I posted last night), but that's what you see with all high velocity merge collectors. They key word being "velocity". Typically a .5" reduction to speed exhaust gas flow--a bit less in our case.
We went with this design as 1 7/8" primaries are the optimal diameter for a 6.2L engine with 40/33mm valves spinning to 7500rpm (post tune) with the type of flow we're seeing on the bench. Anyone that's worked with headers long enough will tell you the design of the collectors is much more important than equal length primaries. Equal length primaries show no gains (even then it's questionable) until past 700hp, more important is primary diameter, and most importantly the collectors.
We went with this design as 1 7/8" primaries are the optimal diameter for a 6.2L engine with 40/33mm valves spinning to 7500rpm (post tune) with the type of flow we're seeing on the bench. Anyone that's worked with headers long enough will tell you the design of the collectors is much more important than equal length primaries. Equal length primaries show no gains (even then it's questionable) until past 700hp, more important is primary diameter, and most importantly the collectors.
I'm curious to see numbers, I'm sure they'll make very good gains. And you're right the primary size is dead on for that engine.
Though I'm still sketchy on that collector, I haven't done enough studying to comment any further. Good luck with sales.
Thread Starter
Banned
Joined: Sep 2008
Posts: 89
Likes: 0
several
I absolutely agree, and all I had to do was a little research to find that out lol.
I'm curious to see numbers, I'm sure they'll make very good gains. And you're right the primary size is dead on for that engine.
Though I'm still sketchy on that collector, I haven't done enough studying to comment any further. Good luck with sales.
I'm curious to see numbers, I'm sure they'll make very good gains. And you're right the primary size is dead on for that engine.
Though I'm still sketchy on that collector, I haven't done enough studying to comment any further. Good luck with sales.
We did a lot of homework before and during the fabrication of these headers. Track results (plus HD video/audio) coming at MIR, then dyno results immediately after.
Member
Joined: Dec 2008
Posts: 93
Likes: 2
C63
If this helps;
http://www.carcraft.com/techarticles...tem/index.html
http://www.carcraft.com/techarticles...tem/index.html
Super Member
Joined: Sep 2006
Posts: 685
Likes: 5
From: Philly
N/A
If this helps;
http://www.carcraft.com/techarticles...tem/index.html
http://www.carcraft.com/techarticles...tem/index.html
MBWorld Fanatic!
Joined: May 2007
Posts: 1,793
Likes: 44
From: San Diego
2004 E55
If this helps;
http://www.carcraft.com/techarticles...tem/index.html
http://www.carcraft.com/techarticles...tem/index.html
MBWorld Fanatic!
Joined: Aug 2006
Posts: 1,885
Likes: 0
From: S.D Cali
CLS63
If this helps;
http://www.carcraft.com/techarticles...tem/index.html
http://www.carcraft.com/techarticles...tem/index.html
