Fuel Injectors
24 July 2008, 11:28 PM
#1
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Fuel Injectors
I have just got my 1998 type r back from Enginetuner and the injectors maxed out at 470bhp.
The current injectors are 740cc Deatschworks.
Has anybody got any suggestions what injectors I could use to get up to
600bhp and also where I can get them!
Any help will be appreciated
The current injectors are 740cc Deatschworks.
Has anybody got any suggestions what injectors I could use to get up to
600bhp and also where I can get them!
Any help will be appreciated
25 July 2008, 02:57 PM
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So I'm guessing there must be a fair bit of variation between the different makes of injector then as mine are already 740cc
The rest of the car is ready to take 600bhp so I want to be sure whichever injectors I buy will be suitable so I guess I cannot be sure that 800cc will be enough.
The rest of the car is ready to take 600bhp so I want to be sure whichever injectors I buy will be suitable so I guess I cannot be sure that 800cc will be enough.
25 July 2008, 08:16 PM
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it's not bad Having just spent loads on the rest of the rebuild I want to finish it off now.
I am told I also need parallel rails.
I have found a kit which converts to top feed rails so would this solve my problems as it seems a good deal with the injcectors included???
Impreza WRX Club Inc. Forum • View topic - PFI top feed fuel rail kit
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25 July 2008, 09:57 PM
#8
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Glad you like it mate coz you know where it's gonna come for a bit of help!!
If I got that then is it just a case of a few bits of braided hose and a few connectors?
Also which size injectors would you suggest I go for?
If I got that then is it just a case of a few bits of braided hose and a few connectors?
Also which size injectors would you suggest I go for?
29 July 2008, 08:06 PM
#10
I have just got my 1998 type r back from Enginetuner and the injectors maxed out at 470bhp.
The current injectors are 740cc Deatschworks.
Has anybody got any suggestions what injectors I could use to get up to
600bhp and also where I can get them!
Any help will be appreciated
The current injectors are 740cc Deatschworks.
Has anybody got any suggestions what injectors I could use to get up to
600bhp and also where I can get them!
Any help will be appreciated
See here Scoobypedia | Trusted knowledge for everything Subaru | Knowledge / Estimated Horse Power from Injectors
You could also get an adjustable fuel pressure regulator and up the pressure a bit, you might need to go to 850's if you seriously want 600bhp.
29 July 2008, 08:15 PM
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They were from a company in the States. I ended up buying the block, clutch and a rotated turbo kit from them and it was a really good price.
Martyn had these injectors at 98% when he was mapping and assures me that on the current fuel system this is the maximum. As I need to do the parallel fuel line upgrade as well then I am struggling to find a set of injectors over 800 cc for the price I can get the whole kit in the thread above for.
It also means I could possibly go for 1000cc injectors which would handle the power with ease.
And yes 600bhp is serious!!!!!
Martyn had these injectors at 98% when he was mapping and assures me that on the current fuel system this is the maximum. As I need to do the parallel fuel line upgrade as well then I am struggling to find a set of injectors over 800 cc for the price I can get the whole kit in the thread above for.
It also means I could possibly go for 1000cc injectors which would handle the power with ease.
And yes 600bhp is serious!!!!!
29 July 2008, 10:52 PM
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Screechy,
470bhp on "740cc" injectors at 98% idc is very low. What fuel pump/pumps are you using, and at what fuel pressure ?
Mark.
470bhp on "740cc" injectors at 98% idc is very low. What fuel pump/pumps are you using, and at what fuel pressure ?
Mark.
30 July 2008, 07:38 AM
#13
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It's a bosch 040 fuel pump. I'm not sure what pressure it's set at but it was as high as Martyn wanted to go safely on the original rails and pipes.
Forgot to mention it's also got a FSE regulator.
Forgot to mention it's also got a FSE regulator.
30 July 2008, 08:19 AM
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I think the Bosch (044 ?) will struggle to get anywhere near 600bhp, but I would expect it to work up to circa 540bhp.
You'll either need a much bigger pump, or run two pumps, as most of us do.
Mark.
You'll either need a much bigger pump, or run two pumps, as most of us do.
Mark.
30 July 2008, 09:23 AM
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It was definitely the 040 in tank fuel pump.
It was recommended by Andy F and I replaced the Walbro that was fitted. Compared with the Walbro it is a lot bigger in size.
He said that would easily make the 600bhp, especially as I am running 10% methanol.
It was recommended by Andy F and I replaced the Walbro that was fitted. Compared with the Walbro it is a lot bigger in size.
He said that would easily make the 600bhp, especially as I am running 10% methanol.
30 July 2008, 02:43 PM
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Not sure if this is the correct pump but sounds like it could be?
Specs taken from this site Fuel Pump, In Tank, Bosch "040" - 034 MOTORSPORT
Bosch 040 Fuel Pump Specs:
Bosch Part Number: 0 580 254 040 Minimum Current: 12 Volts Operating Pressure: 94 PSI (6.5 Bar) Minimum Flow @ Outlet: 200 LPH.
Fuel Pump Connections:
Inlet: Open Base Outlet: M10 x 1.0 Electrical: Positive M6 / Negative M5
Available with M12 Check valve connection below.
Specs taken from this site Fuel Pump, In Tank, Bosch "040" - 034 MOTORSPORT
Bosch 040 Fuel Pump Specs:
Bosch Part Number: 0 580 254 040 Minimum Current: 12 Volts Operating Pressure: 94 PSI (6.5 Bar) Minimum Flow @ Outlet: 200 LPH.
Fuel Pump Connections:
Inlet: Open Base Outlet: M10 x 1.0 Electrical: Positive M6 / Negative M5
Available with M12 Check valve connection below.
30 July 2008, 02:46 PM
#18
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Thanks - that looks like it
From what I remember it is similar spec to the 044 but sits inside the tank
From what I remember it is similar spec to the 044 but sits inside the tank
Last edited by screechy; 30 July 2008 at 02:49 PM. Reason: add info
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