Looped Fuel Rail Questions???
Thread Starter
Member
Joined: Jan 2011
Posts: 85
Likes: 0
2004 e55, 2006 gmc 3500 van( for work )
Looped Fuel Rail Questions???
I just bought a fuel rail that I plan on looping. I just needed to know if there are any specific measurements or angles that I need to follow. Also I am not sure what injectors I should run, I was told the 550cc but no brand. Please let me know what you think. Thanks
https://lh4.googleusercontent.com/-j...4/s640/006.JPG
https://lh4.googleusercontent.com/-j...4/s640/006.JPG
MBWorld Fanatic!
Joined: Nov 2005
Posts: 5,692
Likes: 5
none
I just bought a fuel rail that I plan on looping. I just needed to know if there are any specific measurements or angles that I need to follow. Also I am not sure what injectors I should run, I was told the 550cc but no brand. Please let me know what you think. Thanks
https://lh4.googleusercontent.com/-j...4/s640/006.JPG
https://lh4.googleusercontent.com/-j...4/s640/006.JPG
or look for one his DIY threads. Its very useful.
MBWorld Fanatic!
Joined: Mar 2010
Posts: 1,909
Likes: 4
From: San Diego
F-250
TTM Makes a kit that will eliminate the guess work. Beyond that, you are going to get a lot of varied opinions. I would not wing a project like this. If you do it wrong, it could be problematic.
If you opt to go this route, you will probably need to pull the supercharger, and have the rail fabricated to fit under it. The clearance is VERY tight.
As a TTM fan boy, I would say: Call Bruce.
If you opt to go this route, you will probably need to pull the supercharger, and have the rail fabricated to fit under it. The clearance is VERY tight.
As a TTM fan boy, I would say: Call Bruce.
MBWorld Fanatic!
Joined: Nov 2005
Posts: 5,692
Likes: 5
none
The most cost effective way
https://mbworld.org/forums/w211-amg/...-rail-diy.html
or if you like watching dollar bills swirl around porcelain, then by all means entertain one of the above options. I personally like seeing my dollar bills going into the gstrings of the performers at the local ballerina club.
https://mbworld.org/forums/w211-amg/...-rail-diy.html
or if you like watching dollar bills swirl around porcelain, then by all means entertain one of the above options. I personally like seeing my dollar bills going into the gstrings of the performers at the local ballerina club.
Trending Topics
MBWorld Fanatic!
Joined: Oct 2009
Posts: 2,825
Likes: 17
From: Southern California
E55 w/ goods, Z32 Project underway
Very easy to deal, just find a good welder. Have done 3 of them now, all leak proof, no issues. If you look at my photos in the link above you will see how tight the right angles are on each end. Otherwise straightforward. (No PMs for request please)
MB World Stories
The Best of Mercedes & AMG
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
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
Former Vendor of MBWorld
Joined: May 2012
Posts: 623
Likes: 0
From: OHIO
FTP-E55///AMG
Last edited by FT-Performance; Jul 24, 2012 at 01:27 AM.
MBWorld Fanatic!
Joined: Sep 2008
Posts: 3,575
Likes: 8
From: BC
Haters crazy
The most cost effective way
https://mbworld.org/forums/w211-amg/...-rail-diy.html
or if you like watching dollar bills swirl around porcelain, then by all means entertain one of the above options. I personally like seeing my dollar bills going into the gstrings of the performers at the local ballerina club.
https://mbworld.org/forums/w211-amg/...-rail-diy.html
or if you like watching dollar bills swirl around porcelain, then by all means entertain one of the above options. I personally like seeing my dollar bills going into the gstrings of the performers at the local ballerina club.
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,124
Likes: 32
From: Florida-Germany-New York
2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
TTM Makes a kit that will eliminate the guess work. Beyond that, you are going to get a lot of varied opinions. I would not wing a project like this. If you do it wrong, it could be problematic.
If you opt to go this route, you will probably need to pull the supercharger, and have the rail fabricated to fit under it. The clearance is VERY tight.
As a TTM fan boy, I would say: Call Bruce.
If you opt to go this route, you will probably need to pull the supercharger, and have the rail fabricated to fit under it. The clearance is VERY tight.
As a TTM fan boy, I would say: Call Bruce.
MBWorld Fanatic!
Joined: Dec 2008
Posts: 2,190
Likes: 35
shrimp boat
Like Dane and Craig said, there are options out there beside doing it yourself. It's a precise measure, too long or too short it won't fit. And if you were to do it yourself, may as well take an extra step and move the feed point.
Former Vendor of MBWorld
Joined: Oct 2008
Posts: 1,181
Likes: 4
From: Long Island, NY
Whatever we're tuning!
Here is the thread that grantwoodtx posted:
https://mbworld.org/forums/w211-amg/...-rail-diy.html
As you can see there was never a follow up of his finished rail since the fittings in the picture, which was reverse engineered on PSC, are full swivel fittings that DO NOT WORK with the modified rail because of clearance issues unless you use an AN6 fitting which causes inconsistent fuel pressure to all of the injectors.
The TTM modified rail, which has a provisional patent filed with the US Patent Agency, uses AN8 fittings which is the same size as the OEM rail and produces consistent fuel pressure to every injector unlike the rail that uses AN6 fitting and AN6 stainless steel fuel line.
Here is the prototype TTM Fueling Kit that was tuned and reviewed by Jerry from Eurocharged in early 2011 but was originally purchased by the CLS owner in late 2010 and waited for Jerry to come to FL for tuning:
https://mbworld.org/forums/w211-amg/...ty-review.html
It took us at TTM a couple of months, with a M113k engine on the stand and multiple configurations, to develop the best solution to the #8 cylinder fuel starvation issue, It is common knowledge now but TTM was the first company to address this issue and we continue to have the best products available.
The TTM Fueling Kit(modified 100% new OEM rail, AN8 stainless steel fuel line, TTM proprietary injectors and pig tails) is available for $1100 and we are proud to have in excess of 50 kits on the M113k engine throughout the world.
Imitation is the best form of flattery.
https://mbworld.org/forums/w211-amg/...-rail-diy.html
As you can see there was never a follow up of his finished rail since the fittings in the picture, which was reverse engineered on PSC, are full swivel fittings that DO NOT WORK with the modified rail because of clearance issues unless you use an AN6 fitting which causes inconsistent fuel pressure to all of the injectors.
The TTM modified rail, which has a provisional patent filed with the US Patent Agency, uses AN8 fittings which is the same size as the OEM rail and produces consistent fuel pressure to every injector unlike the rail that uses AN6 fitting and AN6 stainless steel fuel line.
Here is the prototype TTM Fueling Kit that was tuned and reviewed by Jerry from Eurocharged in early 2011 but was originally purchased by the CLS owner in late 2010 and waited for Jerry to come to FL for tuning:
https://mbworld.org/forums/w211-amg/...ty-review.html
It took us at TTM a couple of months, with a M113k engine on the stand and multiple configurations, to develop the best solution to the #8 cylinder fuel starvation issue, It is common knowledge now but TTM was the first company to address this issue and we continue to have the best products available.
The TTM Fueling Kit(modified 100% new OEM rail, AN8 stainless steel fuel line, TTM proprietary injectors and pig tails) is available for $1100 and we are proud to have in excess of 50 kits on the M113k engine throughout the world.
Imitation is the best form of flattery.
Former Vendor of MBWorld
Joined: Oct 2008
Posts: 1,181
Likes: 4
From: Long Island, NY
Whatever we're tuning!
TTM Makes a kit that will eliminate the guess work. Beyond that, you are going to get a lot of varied opinions. I would not wing a project like this. If you do it wrong, it could be problematic.
If you opt to go this route, you will probably need to pull the supercharger, and have the rail fabricated to fit under it. The clearance is VERY tight.
As a TTM fan boy, I would say: Call Bruce.
If you opt to go this route, you will probably need to pull the supercharger, and have the rail fabricated to fit under it. The clearance is VERY tight.
As a TTM fan boy, I would say: Call Bruce.
Thank you Steve and also for letting me fix your imitation TTM fuel rail..
Thank you Vinny.
Thank you Steve. Steve is the original modified fuel rail guru and one of the most experienced guys on this forum.
MBWorld Fanatic!
Joined: Aug 2010
Posts: 2,156
Likes: 7
From: Northern Va
Dirt Scooters
Not 100% true info but the looped rails do help. The real problems are the feed location and the rail not having enough volume to keep injectors with constant and stable fuel pressure. This was tested with stock and looped rails. Sneak peek of the real solution below. Inside diameter larger than -8AN (5/8) fitting that connect the crossover's. Rear crossover will have the inlet in the middle. Rail itself will be able to support well over 1000hp for those looking to push the limit 
MBWorld Fanatic!
Joined: Oct 2009
Posts: 2,825
Likes: 17
From: Southern California
E55 w/ goods, Z32 Project underway
Not 100% true info but the looped rails do help. The real problems are the feed location and the rail not having enough volume to keep injectors with constant and stable fuel pressure. This was tested with stock and looped rails. Sneak peek of the real solution below. Inside diameter larger than -8AN (5/8) fitting that connect the crossover's. Rear crossover will have the inlet in the middle. Rail itself will be able to support well over 1000hp for those looking to push the limit
Former Vendor of MBWorld
Joined: May 2012
Posts: 623
Likes: 0
From: OHIO
FTP-E55///AMG
Not 100% true info but the looped rails do help. The real problems are the feed location and the rail not having enough volume to keep injectors with constant and stable fuel pressure. This was tested with stock and looped rails. Sneak peek of the real solution below. Inside diameter larger than -8AN (5/8) fitting that connect the crossover's. Rear crossover will have the inlet in the middle. Rail itself will be able to support well over 1000hp for those looking to push the limit
MBWorld Fanatic!
Joined: Aug 2010
Posts: 2,156
Likes: 7
From: Northern Va
Dirt Scooters
Yea good idea. Seems so to be a lot of "misleading" information about fuel rails and the fuel problems we have. I actually decided to put some $$ out and have stock and looped rails tested to see what was going on. A looped rail is better than stock yes but the problem is the inlet on the drivers side and the rail itself not having enough volume inside. The talk of "proprietary injectors" And using a stock rail on a modded engine is certain death is a scare tactic. How did I use a stock rail making 620+hp? The 550cc EV14 injectors can be found at many different injectors places and are just Bosch EV14 injectors that are modified to flow 550cc. There's a lot of lies that go around here to scare people I guess.
MBWorld Fanatic!
Joined: Dec 2008
Posts: 2,190
Likes: 35
shrimp boat
Not 100% true info but the looped rails do help. The real problems are the feed location and the rail not having enough volume to keep injectors with constant and stable fuel pressure. This was tested with stock and looped rails. Sneak peek of the real solution below. Inside diameter larger than -8AN (5/8) fitting that connect the crossover's. Rear crossover will have the inlet in the middle. Rail itself will be able to support well over 1000hp for those looking to push the limit
MBWorld Fanatic!
Joined: Mar 2013
Posts: 1,128
Likes: 80
From: SoCal
2006 E55, Various other German and ‘Murican
Not 100% true info but the looped rails do help. The real problems are the feed location and the rail not having enough volume to keep injectors with constant and stable fuel pressure. This was tested with stock and looped rails. Sneak peek of the real solution below. Inside diameter larger than -8AN (5/8) fitting that connect the crossover's. Rear crossover will have the inlet in the middle. Rail itself will be able to support well over 1000hp for those looking to push the limit
Any further info on these CNc rails?
I have see cars melting nb 8 piston with looped rail, even with looped rail the nb 8 is still the nearest one to the inlet and the farthest, invest ur money in checking ur fuel pumps and install an afr and fuel pressure gauges.
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,124
Likes: 32
From: Florida-Germany-New York
2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
You proceed at your own peril when you exceed the 60K mile service life of the pumps.
Newbie
Joined: Nov 2021
Posts: 13
Likes: 0
Cls55
hello friend,old post but worth it,how to test the fuel pressure when have looped fuel rail?
