Fuel Pump connections...
Discussion
The Bosch part number you want is 0580 254 044, which is an external in-line pump. There is a variant ending 040 that is intended for in-tank installation.
The 044 has threaded ports either end for whatever fittings you want to hook your fuel lines up with (18 and 12mm from memory), with a non-return valve installed in the outlet (the 12mm end); there are loads of fittings from the likes of Torques or Speedflow to configure how you like. If hunting for one on auction sites, beware of knock-offs. Brands Hatch Performance were shifting a batch in the last couple of weeks at about £75 so maybe worth a call.
The 044 has threaded ports either end for whatever fittings you want to hook your fuel lines up with (18 and 12mm from memory), with a non-return valve installed in the outlet (the 12mm end); there are loads of fittings from the likes of Torques or Speedflow to configure how you like. If hunting for one on auction sites, beware of knock-offs. Brands Hatch Performance were shifting a batch in the last couple of weeks at about £75 so maybe worth a call.
Cheers - just found them on eBay and they're £87.50 which isn't bad but I put a 'Best Offer' in anyway - never hurts to see. 
Do you know what is the inside diameter of the pipes from the tank and up to the engine bay? Is it 12mm and 8mm? I'm presuming I can just unbolt the adapters from the old pump but just in case they're seized it might be nice to get new ones for a quick and painless swap-over.
Do you know what is the inside diameter of the pipes from the tank and up to the engine bay? Is it 12mm and 8mm? I'm presuming I can just unbolt the adapters from the old pump but just in case they're seized it might be nice to get new ones for a quick and painless swap-over.
I went with a:
Bosch: 0 580 254 957
The 957 is the pump fitted to Cerberas, Tuscans, Porsche 928s ect and sits somewhere between the original Chimaera pump & a Bosch 044, the 044 flows a massive volume of fuel way in excess of anything you're ever likely to need until you start getting close to 500hp so I'd give it a miss if I were you.
The 957 has the same fittings & body as the original one used on the Chimera but ultimately it has the capacity to flow a substantially greater volume of fuel, this helps keep my fuel temps down on 'Ol Gasbag' as I have a small 6 gallon tank that's often only half full so the cooling performance is a lot less than a standard capacity tank.
Fitting this pump solved the hot buzzing pump syndrome I was getting with the original on a hot day, the fuel stays cooler and the 957 works less hard so remains quiet as a mouse even on the hottest days idling in heavy traffic.
The volume of fuel a pump can flow has nothing to do with fuel pressure at the rail by the way, that's governed by your fuel pressure regulator so the higher capacity 957 pump is plug & play and will cause no fueling issues, it just circulates the fuel faster which is good for keeping fuel temperatures lower.
Whatever pump you fit make sure your wiring is delivering sufficient amps, the original TVR pump wiring is very marginal but the Lloyd Specialist Developments team solve this as part of the Canems installation so you should be fine Phil.
Be sure to only buy a genuine Bosch pump, there are lots of fakes out there so be careful. A genuine Bosh pump will have "made in The Czech Republic" on the box because that's where the Bosh fuel pump factory is.
Ironically a fake Bosch fuel pump will have "made in Germany" on the box but will actually be made in Turkey by a manufacturer that has nothing to do with Bosch.
I paid £80 for a genuine new old stock Czech made Bosch 957 and I'm extremely happy with the way it performs, but before you replace your current pump:
1. Check the live & earth at the pump
2. Check the connection at the pump (common failure point)
3. Check the relay mounted next to your Canems ECU
Good luck with it, Dave.
Bosch: 0 580 254 957
The 957 is the pump fitted to Cerberas, Tuscans, Porsche 928s ect and sits somewhere between the original Chimaera pump & a Bosch 044, the 044 flows a massive volume of fuel way in excess of anything you're ever likely to need until you start getting close to 500hp so I'd give it a miss if I were you.
The 957 has the same fittings & body as the original one used on the Chimera but ultimately it has the capacity to flow a substantially greater volume of fuel, this helps keep my fuel temps down on 'Ol Gasbag' as I have a small 6 gallon tank that's often only half full so the cooling performance is a lot less than a standard capacity tank.
Fitting this pump solved the hot buzzing pump syndrome I was getting with the original on a hot day, the fuel stays cooler and the 957 works less hard so remains quiet as a mouse even on the hottest days idling in heavy traffic.
The volume of fuel a pump can flow has nothing to do with fuel pressure at the rail by the way, that's governed by your fuel pressure regulator so the higher capacity 957 pump is plug & play and will cause no fueling issues, it just circulates the fuel faster which is good for keeping fuel temperatures lower.
Whatever pump you fit make sure your wiring is delivering sufficient amps, the original TVR pump wiring is very marginal but the Lloyd Specialist Developments team solve this as part of the Canems installation so you should be fine Phil.
Be sure to only buy a genuine Bosch pump, there are lots of fakes out there so be careful. A genuine Bosh pump will have "made in The Czech Republic" on the box because that's where the Bosh fuel pump factory is.
Ironically a fake Bosch fuel pump will have "made in Germany" on the box but will actually be made in Turkey by a manufacturer that has nothing to do with Bosch.
I paid £80 for a genuine new old stock Czech made Bosch 957 and I'm extremely happy with the way it performs, but before you replace your current pump:
1. Check the live & earth at the pump
2. Check the connection at the pump (common failure point)
3. Check the relay mounted next to your Canems ECU
Good luck with it, Dave.
Ribol said:
Why not cut out the middle man and test/power up the pump direct 
I will do when I get back home in the daylight ... its just I have very limited facilities here as my tools and stuff are all in storage.Pump does *NEED* doing anyway - as does the starter as it fails in hot weather so I may as well just do them and be done with it.
ChimpOnGas said:
2. Check the connection at the pump (common failure point)
I had this a couple of months ago - behaved like a dead pump. It looked like the connectors were covered in crud and were quietly corroding inside. Cleaning up the connectors and tightening up the female crimp connector with some pliers fixed the problem.
s p a c e m a n said:
You don't need the wheel off to get to the pump, it's on the bottom part of the chassis and easy to play with from underneath.. as I found out when I pulled the live off it whilst driving across some grass 
I have to say that's what I was wondering may have happened ...I've been looking to replace the pump though for quite a while ... it would just be easier at my mates where we can get it into the air rather than by the side of the road where I live.
Phil
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