Sam 4 Posted June 21, 2006 Hi, I'm going to be running Bosch 403 (Cossie Grey) Injectors on my new engine. These injectors are low impedance so I will need some ballast resistors (afaik), does anyone know where I can get them? Maplins? What value do they need to be? Any help appreciated. Sam Share this post Link to post Share on other sites
Pug_101 0 Posted June 21, 2006 Hi, I'm going to be running Bosch 403 (Cossie Grey) Injectors on my new engine. These injectors are low impedance so I will need some ballast resistors (afaik), does anyone know where I can get them? Maplins? What value do they need to be? Any help appreciated. Sam Are they 12V or 5V injectors Share this post Link to post Share on other sites
Mattsav 1 Posted June 21, 2006 Grey's are Huge!! How much power are you looking for???? Share this post Link to post Share on other sites
Sam 4 Posted June 21, 2006 (edited) Eventually 375bhp once I can afford the forged rods and pistons from yourselves Initially ~300bhp (perhaps a little less) I'm tempted by forged pistons to start with, how much do you think they'll deal with (without forged rods). Edited June 21, 2006 by Sam Share this post Link to post Share on other sites
tom_m 0 Posted June 21, 2006 i thought the 500 could run low impedance injectors without the need for ballasts? Share this post Link to post Share on other sites
Sam 4 Posted June 22, 2006 I've not looked into it, I'll RTFM Share this post Link to post Share on other sites
smckeown 1 Posted June 22, 2006 yeah many ECUs offer low and high imputence injector compatiility. I'd build the engine to it's end spec from the beginning. What I learnt from puma was many things are dependent on the end result, so thinking you can build an engine in stages is far from the optimal approach. Share this post Link to post Share on other sites
Sam 4 Posted June 22, 2006 Yep thats my plan at the moment, just need to sell my old engine to pay for the new bits, guess I could give the credit card a fright Share this post Link to post Share on other sites
maxi 36 1 Cars Posted June 22, 2006 You DO need ballast resistors for an OMEX 500 ECU (this is what I am running) when using cossie injectors. Omex supplied mine, just give them a bell, they are more than helpful. Maxi Share this post Link to post Share on other sites
maxi 36 1 Cars Posted June 24, 2006 Any idea on price Adam? Havent a clue me old son. Just give them a bell. They are a bunch of top blokes. Maxi Share this post Link to post Share on other sites
stew205 17 Posted June 24, 2006 Sam I have some new ones which I haven't used. I will check what they are and get back to you. 3.3ohm 25watt If they are any use to you let me know. I paid £4 each. Have a look at my old thread entitled something like Ballast resistors. I worked out these were what I needed if using cosworth dark greens. I have a feeling though they may differ in impedence to the greys. Share this post Link to post Share on other sites
Sam 4 Posted June 25, 2006 Do I need 4 ? Probably going to have to make a new loom for the new engine anyway. Share this post Link to post Share on other sites
