Fuel Injectors?
10-21-2008, 01:12 AM
#1
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Fuel Injectors?
If our fuel injector size was increased would that help our performance? Does anyone know our flow rate?
10-21-2008, 01:17 AM
#2
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fuel injectors would only be needed when the duty cycle has been maxed. putting in larger injectors before would just make the car run pig rich. usually anything above 80% or so is time to increase to larger injectors. judging from the power being made on stock injectors, i dont think its needed until someone builds the bottom end, increases displacement, headwork, radical cams, and more boost etc.. just my 2 cents.
10-21-2008, 08:33 AM
#3
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10-21-2008, 12:04 PM
#4
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Thread Starter
and I was expecting a fuel injector response....
11-10-2008, 12:06 PM
#5
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E55 AMG
The SLR runs different injectors.
E55 injectors have 4 holes in the pintle. SLR ones have 6. Even if the flow rate is the same, 6 holes gives a better misting to the fuel and thus a faster burn for more power. SLR runs more than 600bhp, but most modders are only going to take their cars to 550 at best and it seems that standard items keep up with this level of fuel no problem.
I have SLR injectors in my car, they fit directly into the rail and the plugs are identical, they do not throw any error codes. The car feels smoother - usually a sign of increased power.A1550780049 is the SLR injector part number if you want to get some. I dont know how much they cost, I got mine off a crashed SLR that I robbed for loads of pieces. The SLR injectors are light blue in colour - e55 are black.
Oe numbers on SLR injectors are A1550780049 and 0280156148 also on plug part 060 387 B
E55 injectors have 4 holes in the pintle. SLR ones have 6. Even if the flow rate is the same, 6 holes gives a better misting to the fuel and thus a faster burn for more power. SLR runs more than 600bhp, but most modders are only going to take their cars to 550 at best and it seems that standard items keep up with this level of fuel no problem.
I have SLR injectors in my car, they fit directly into the rail and the plugs are identical, they do not throw any error codes. The car feels smoother - usually a sign of increased power.A1550780049 is the SLR injector part number if you want to get some. I dont know how much they cost, I got mine off a crashed SLR that I robbed for loads of pieces. The SLR injectors are light blue in colour - e55 are black.
Oe numbers on SLR injectors are A1550780049 and 0280156148 also on plug part 060 387 B
11-10-2008, 12:09 PM
#6
MBWorld Fanatic!
The SLR runs different injectors.
E55 injectors have 4 holes in the pintle. SLR ones have 6. Even if the flow rate is the same, 6 holes gives a better misting to the fuel and thus a faster burn for more power. SLR runs more than 600bhp, but most modders are only going to take their cars to 550 at best and it seems that standard items keep up with this level of fuel no problem.
I have SLR injectors in my car, they fit directly into the rail and the plugs are identical, they do not throw any error codes. The car feels smoother - usually a sign of increased power.A1550780049 is the SLR injector part number if you want to get some. I dont know how much they cost, I got mine off a crashed SLR that I robbed for loads of pieces. The SLR injectors are light blue in colour - e55 are black.
Oe numbers on SLR injectors are A1550780049 and 0280156148 also on plug part 060 387 B
E55 injectors have 4 holes in the pintle. SLR ones have 6. Even if the flow rate is the same, 6 holes gives a better misting to the fuel and thus a faster burn for more power. SLR runs more than 600bhp, but most modders are only going to take their cars to 550 at best and it seems that standard items keep up with this level of fuel no problem.
I have SLR injectors in my car, they fit directly into the rail and the plugs are identical, they do not throw any error codes. The car feels smoother - usually a sign of increased power.A1550780049 is the SLR injector part number if you want to get some. I dont know how much they cost, I got mine off a crashed SLR that I robbed for loads of pieces. The SLR injectors are light blue in colour - e55 are black.
Oe numbers on SLR injectors are A1550780049 and 0280156148 also on plug part 060 387 B
11-10-2008, 02:09 PM
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E55 AMG
The charge coolers from both cars were damaged as they had both been rolled but even if they had been good, it is a job that is easier said than done.
The supercharger of the SLR is very similar to the E55. The screws are the same, the gearing is the same but the collector is different.
Under the E55 s/c the air is put through a chargecooler and then up into the inlet tract. The t/b on an e55 is at the top of the s/c, mounted above the bypass t/b with the inlet each side.
To fit the SLR coolers you would have to chop into the inlet tubes, taking air from the original charge cooler and passing it through the SLR coolers and then putting it back into the inlet.
If you put the SLR coolers in the same place as in the SLR, this displaces the e55 air filter boxes etc.
It would a major pain in the ....
I have instead doubled up on the radiator in the front bumper, put in a cm90 pump. Separated the engine water, added a reservoir and will now fit mappable aquamist water injection into the inlet, with a tank in the boot for the water and 5% methanol mix. I think this will be more effective at cooling than the SLR coolers anyway. And water injection means I can run even more boost as the 5% methanol increases the RON of the fuel by about 3 octane, meaning I can set up for 103 octane fuel too, a big advantage over cheap 95 basic fuel.
I will put up some photos of the SLR charger if you want to see the differences.
The supercharger of the SLR is very similar to the E55. The screws are the same, the gearing is the same but the collector is different.
Under the E55 s/c the air is put through a chargecooler and then up into the inlet tract. The t/b on an e55 is at the top of the s/c, mounted above the bypass t/b with the inlet each side.
To fit the SLR coolers you would have to chop into the inlet tubes, taking air from the original charge cooler and passing it through the SLR coolers and then putting it back into the inlet.
If you put the SLR coolers in the same place as in the SLR, this displaces the e55 air filter boxes etc.
It would a major pain in the ....
I have instead doubled up on the radiator in the front bumper, put in a cm90 pump. Separated the engine water, added a reservoir and will now fit mappable aquamist water injection into the inlet, with a tank in the boot for the water and 5% methanol mix. I think this will be more effective at cooling than the SLR coolers anyway. And water injection means I can run even more boost as the 5% methanol increases the RON of the fuel by about 3 octane, meaning I can set up for 103 octane fuel too, a big advantage over cheap 95 basic fuel.
I will put up some photos of the SLR charger if you want to see the differences.
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11-10-2008, 03:24 PM
#8
MBWorld Fanatic!
The charge coolers from both cars were damaged as they had both been rolled but even if they had been good, it is a job that is easier said than done.
The supercharger of the SLR is very similar to the E55. The screws are the same, the gearing is the same but the collector is different.
Under the E55 s/c the air is put through a chargecooler and then up into the inlet tract. The t/b on an e55 is at the top of the s/c, mounted above the bypass t/b with the inlet each side.
To fit the SLR coolers you would have to chop into the inlet tubes, taking air from the original charge cooler and passing it through the SLR coolers and then putting it back into the inlet.
If you put the SLR coolers in the same place as in the SLR, this displaces the e55 air filter boxes etc.
It would a major pain in the ....
I have instead doubled up on the radiator in the front bumper, put in a cm90 pump. Separated the engine water, added a reservoir and will now fit mappable aquamist water injection into the inlet, with a tank in the boot for the water and 5% methanol mix. I think this will be more effective at cooling than the SLR coolers anyway. And water injection means I can run even more boost as the 5% methanol increases the RON of the fuel by about 3 octane, meaning I can set up for 103 octane fuel too, a big advantage over cheap 95 basic fuel.
I will put up some photos of the SLR charger if you want to see the differences.
The supercharger of the SLR is very similar to the E55. The screws are the same, the gearing is the same but the collector is different.
Under the E55 s/c the air is put through a chargecooler and then up into the inlet tract. The t/b on an e55 is at the top of the s/c, mounted above the bypass t/b with the inlet each side.
To fit the SLR coolers you would have to chop into the inlet tubes, taking air from the original charge cooler and passing it through the SLR coolers and then putting it back into the inlet.
If you put the SLR coolers in the same place as in the SLR, this displaces the e55 air filter boxes etc.
It would a major pain in the ....
I have instead doubled up on the radiator in the front bumper, put in a cm90 pump. Separated the engine water, added a reservoir and will now fit mappable aquamist water injection into the inlet, with a tank in the boot for the water and 5% methanol mix. I think this will be more effective at cooling than the SLR coolers anyway. And water injection means I can run even more boost as the 5% methanol increases the RON of the fuel by about 3 octane, meaning I can set up for 103 octane fuel too, a big advantage over cheap 95 basic fuel.
I will put up some photos of the SLR charger if you want to see the differences.
11-10-2008, 04:23 PM
#9
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2003 E55 & 2014 GL550
The screws are the same, the gearing is the same
Screws are the same though..yes
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Last edited by Jakpro1; 11-10-2008 at 04:26 PM.
11-14-2008, 01:59 PM
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E55 AMG
Sorry Jakpro1 you are wrong. The gearing is the same. Do you have SLR chargers to check it against ? I do !
Victor is correct that it would be difficult to change if they were different but as they are not geared differently its a non issue.
If the SLR runs more boost, it is done in the same way as the tuners do, i.e by changing the size of the crank pulley. The s/c pullley is the same diameter on the SLR and the SL/E55 the only difference at the front end of the SLR charger apart from the shape of the casing is that the magnetic clutch of an E55 has holes drilled into it and the SRL does not, I think this is to slip the clutch slightly on the E55 to make things as smooth as possible, whereas in the SLR it bites up harder a compromise suitable for a supercar when looking for out and out performance.
I know that you will still doubt me so if I get 5 minutes i will a take a couple of photos to prove the point, i have 3 s/chargers in bits on a table (1SL 2SLR) so its no big problem !
Victor is correct that it would be difficult to change if they were different but as they are not geared differently its a non issue.
If the SLR runs more boost, it is done in the same way as the tuners do, i.e by changing the size of the crank pulley. The s/c pullley is the same diameter on the SLR and the SL/E55 the only difference at the front end of the SLR charger apart from the shape of the casing is that the magnetic clutch of an E55 has holes drilled into it and the SRL does not, I think this is to slip the clutch slightly on the E55 to make things as smooth as possible, whereas in the SLR it bites up harder a compromise suitable for a supercar when looking for out and out performance.
I know that you will still doubt me so if I get 5 minutes i will a take a couple of photos to prove the point, i have 3 s/chargers in bits on a table (1SL 2SLR) so its no big problem !
11-14-2008, 05:31 PM
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2003 E55
11-14-2008, 05:38 PM
#13
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The SLR runs different injectors.
E55 injectors have 4 holes in the pintle. SLR ones have 6. Even if the flow rate is the same, 6 holes gives a better misting to the fuel and thus a faster burn for more power. SLR runs more than 600bhp, but most modders are only going to take their cars to 550 at best and it seems that standard items keep up with this level of fuel no problem.
I have SLR injectors in my car, they fit directly into the rail and the plugs are identical, they do not throw any error codes. The car feels smoother - usually a sign of increased power.A1550780049 is the SLR injector part number if you want to get some. I dont know how much they cost, I got mine off a crashed SLR that I robbed for loads of pieces. The SLR injectors are light blue in colour - e55 are black.
Oe numbers on SLR injectors are A1550780049 and 0280156148 also on plug part 060 387 B
E55 injectors have 4 holes in the pintle. SLR ones have 6. Even if the flow rate is the same, 6 holes gives a better misting to the fuel and thus a faster burn for more power. SLR runs more than 600bhp, but most modders are only going to take their cars to 550 at best and it seems that standard items keep up with this level of fuel no problem.
I have SLR injectors in my car, they fit directly into the rail and the plugs are identical, they do not throw any error codes. The car feels smoother - usually a sign of increased power.A1550780049 is the SLR injector part number if you want to get some. I dont know how much they cost, I got mine off a crashed SLR that I robbed for loads of pieces. The SLR injectors are light blue in colour - e55 are black.
Oe numbers on SLR injectors are A1550780049 and 0280156148 also on plug part 060 387 B
PS, do you have any pictures or dimensions of the SLR heat excahnger (S/C aftercooler/radiator)??
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Last edited by Exotic-metal55; 11-14-2008 at 05:40 PM.
