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Euro Fuel Head

I was reading a post about the Euro Fuel head and I have some questions. My fuel dist was replaced by the previous owner several years ago as when he pulled the car out of storage it had some running issues so he had it replaced. My fuel head is black. My car has stock IC, turbo, and WG. What is the advantage of the larger FH with a stock engine? Does black actually mean the larger Fuel Head?
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Tim
1986 930
Gone:71,2,4 914's, 70T, 71T(RS),77S
Old 03-11-2007, 06:28 PM
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Crotchety Old Bastard
 
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Euro fuel heads are black. They flow slightly more fuel than thier '86-on US counterparts.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 03-11-2007, 06:55 PM
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Euro fuel head is good- But do you have the thick Euro lines and injectors? If you are looking to mod the car and want them I got someone that would probley let go of his for a real good price
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86' 930/GT-40R Sold
94' Rustang GT daily (long gone)
2008 C6/Z51 Corvette
Old 03-13-2007, 07:46 PM
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As far as I know, the lines and injectors are the same.
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 03-13-2007, 08:11 PM
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I dont know the diffrence, but they got diffrent part numbers, Im thinking maybe slightly bigger openings
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Kris @ Tech9
86' 930/GT-40R Sold
94' Rustang GT daily (long gone)
2008 C6/Z51 Corvette
Old 03-13-2007, 08:22 PM
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Very well could be -
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 03-13-2007, 08:34 PM
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Crotchety Old Bastard
 
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The injectors are not the same.

Euro injectors have a different part number than US injectors. They also have a larger flow capacity.

These are Euro injectors. I can check the part number if you need it or I can sell you these if you are interested.

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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 03-13-2007, 09:15 PM
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I was under the impression that the injectors & the lines are never a limiting factor, only the fuel head.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 03-14-2007, 02:29 AM
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I have a complete Euro CIS fuel system for sale, and I have not checked part numbers, but I can tell you with 100 % certainty....the euro lines are allot bigger than us versions.....
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Brad...930 gt-1 racecar, increased displacement to 3.6L, JB racing Cylinders, JE 8 to1 pistons, stroked crank, Carrillo rods, extrudehoned 3.2L intake, full bay Bell I/C, GT-2 EVO cams, Rarly8 headers, GTX-35RS turbo, twin plug, P&P heads, Link G4 EFi system, G-50/50 with LTD slip and oil squirters/oil cooler, zork tube, full race coilover system, with carbon fiber body, full cage, E-85 sippin drunk
Old 03-14-2007, 08:46 AM
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That is what I heard also - in fact, the guy who tested my injectors said that all CIS injectors have the "capability" to flow huge amounts of fuel.
He fired mine up on the test rig as I watched....man, I swear if you poured a beer you couldn't pour much faster ;-)

That said, my 930 is a 1982 - I can't help much here as my car is a european model (as were all '82s) to begin with.
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 03-14-2007, 09:03 AM
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The entire Euro CIS is capable of flowing a bit more fuel than the US version. Every fuel handling component is "bigger" in that department. These systems were designed for the 300+HP engines.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 03-14-2007, 10:25 AM
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wow, craig they flow that much? I allways thought that the poppet injectors were the restrictive part of the sys.
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86' 930/GT-40R Sold
94' Rustang GT daily (long gone)
2008 C6/Z51 Corvette
Old 03-14-2007, 11:10 AM
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Thanks for all the info. No upgrades planned anytime soon, just enjoying the car in its stock (minus smog and cat) form. I was just curious about the euro fuel head. Just drove it from Chas, SC to Baton Rouge, LA and back (1.8k miles), what an incredible hwy car, even better on the back roads. Hit approx 150mph in several places that were somewhat "secure" (long straight bridges with no traffic in front of me, and no place for a trooper to sit, now airplanes are different, but did not see any) Car is just amazing at that speed.
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1986 930
Gone:71,2,4 914's, 70T, 71T(RS),77S
Old 03-14-2007, 11:24 AM
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When taken to the extreme the entire system becomes restrictive.

The stock WUR will be the first component to not allow the required fuel delivery for a modified (375+HP) engine. After that the fuel head will fall off. Both components can be modified, to a point. The injectors will likely be the last component to limit power output. 450+HP CIS engines use stock Euro injectors.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 03-14-2007, 11:28 AM
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Huge amounts. Sheer quantities, yes.
By itself, watching the flow from a CIS injector into a vial is purely anecdotal "wow look at that" BS.

Take a look at an AFR diagram with the Imagine Auto fuel head and untuned fuel management.
Accomplished via RPM switch to delay full bost richness and an adjustable WUR.

These SOBs can dump some serious fuel. Blue lines:



This is with untuned RPM switch and (initially) pre-tuned WUR.
Plenty of fuel up top, and in need of serious tuning below 5,000 - too lean.

Edit: Yes to what Brian said.
My engine has approx 515 FWHP and 488 FWTQ.

Red lines are fuel head ONLY
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno

Last edited by Craig 930 RS; 03-14-2007 at 03:11 PM..
Old 03-14-2007, 11:30 AM
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I have a euro car too. I bought a USA CNC'd modded fuel head. Stephen told me that it will bolt straight into my car with the euro injector lines. He also stated that a modded USA head will flow more than a modded euro head.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 03-14-2007, 02:58 PM
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The did pre-86 930's with the euro fuel heads have the euro lines and injectors as well? or just the fuel head?
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1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.)
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Old 03-14-2007, 03:36 PM
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All pre-86 930s have the Euro CIS, including the '78/9 USA models.
To verify what you have check the part numbers of the fuel head, injectors, and WUR.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 03-14-2007, 05:43 PM
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Good info Brian, thanks.
Does that mean only the '86 on USA spec cars had a lambda sensor and the frequency valve that it controlled ?
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg

Last edited by NathanUK; 03-15-2007 at 10:34 AM..
Old 03-15-2007, 10:31 AM
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