The injectors I have used are the same physical dimensions as the original Integrale Magneti Marrelli o-ring to o-ring centres and o-ring sizes themselves. I then modified the original Integrale fuel rail by Tig welding Jic 6 fittings on each end (feeds) and taking a return in the centre then making a new mounting bracket to suit the Kappa inlet.
Do you know:-
1. What cc you require?
2. What impedance injectors the engine management ECU requires?
The injectors I have sourced that match the impedance requirement of my DTA S60 ECU are Injector Dynamics ID850 from the US they are are a correctly flow matched set of basically the newer Bosch EV14 injectors with housings to match the fitment that is required. They will do 850cc @ 3 Bar fuel pressure and 1000cc @ 5 Bar.
Several reasons for my selection of these are:-
1. Match my ECU's required Impedance.
2. Even the 2000cc @ 3 bar version that is availiable of this make of injector has been proven to be capable of producing a stable tickover of 800 rpm on a 2 litre engine as the pulse time can be so short.
3. Correct fitment for my application other fitments availiable.
4. Each matched set comes with the correct information for the matched set (injector dead time) which is important to the person calibrating the engine.
5. Price is very reasonable.
6. The injector is in the end still a reliable Bosch unit its just the correct end fittings and matching is done for you (the hard work).
I hope I havent broken too many rules regarding mentioning manufacturers names here, please feel free to edit my post if you are unhappy with me posting names, web address etc.
Here is a link to their website. There are UK distributors they seem to be mainly Japanese specialists. I purchased mine directly through the US website (with extra spare seals and filters) and they were on my doorstep in 3 days I was astounded.http://www.injectordynamics.com/
You may find if your applications target horsepower is different than mine and that the injectors from there are too large, they only do 4 sizes 750cc, 850cc, 1000cc and 2000cc
The size I have used for the Kappa Inlet is 60mm x 14mm, 60mm between o-ring centres and 14mm o-rings at both ends.
Dont forget to specify clips and pins for the connection as they are not standard 2 pin timer plugs like the old units.
I will take you a few closeup pictures tommorow, and if you can hang fire a couple of weeks I should have some dyno data and some idea how they are performing from the engine mapper.
Also dont forget I am suppling the fuel to these with 4 fuel pumps 2 x lift pumps into fuel swirl pot and 2 x Bosch 044 motorsport high pressure pumps forward out of the swirl pot.
If you need any more information just give me a call.
Always a pleasure
Guy Croft wrote:Dave - can you tell me where to get injectors for an engine of this type with the Kappa inlet please? I have a similar setup here for Andy Wright.
Never bought injectors in me life, know how to do the calcs but beyond that - no idea where to start!
Is there a distributor in the UK and maybe an online table of sizes?