Para 82 2 Cars Posted June 22, 2008 Hi there I was wonder does the gti6 injectors have a highr cc of flow rate then S16 (XU10J4) onces, atleast, thats what i was told. i have been unable to check the exact specs as I dont have a weber specification sheet. thanks in advance Mike Share this post Link to post Share on other sites
Richie-Van-GTi 72 2 Cars Posted June 22, 2008 yes they do, I dont have the part numbers to hand but IIRC theres around 15cc difference. Share this post Link to post Share on other sites
welshpug 1,661 Posted June 22, 2008 IIRC S16 are the same as 1.9 Mi and very close to the 1.9 8v injectors at somewhere like 216cc. GTi6 are 264cc I think. the difference is due to the fact that the gti6 fires sequentially, the others all fire in batch (i.e all at the same time) Share this post Link to post Share on other sites
Para 82 2 Cars Posted June 22, 2008 Great, and how are things with changing them ? All i need to do is take out the standart one and place the one from GTI6 ? Share this post Link to post Share on other sites
welshpug 1,661 Posted June 22, 2008 essentially yes, buy why do you need to? do you have aftermarket management? Share this post Link to post Share on other sites
Para 82 2 Cars Posted June 22, 2008 I have a chance to get set for a good price. and I've just thought that this will improve performance in my S16 ... I don't have a good knowledge about those things , that's why i am asking here. Share this post Link to post Share on other sites
welshpug 1,661 Posted June 22, 2008 it will simply make it over-fuel like buggery if its going in on a standard ecu, no point at all in fitting them. Share this post Link to post Share on other sites
Para 82 2 Cars Posted June 22, 2008 oh yes, that's make sense. Thanks Share this post Link to post Share on other sites
welshpug 1,661 Posted June 22, 2008 IF however you were to uprate the cams and fit throttle bodies and aftermarket management, they may be of use gotta be able to suck the air in as well as squirt the fuel in. Share this post Link to post Share on other sites
Sandy 191 Posted June 22, 2008 The GTi6 ones are officially 265cc @ 3 bar, but they seem to deliver more like 305cc @ 3 bar in reality. I'm dying to get myself set up with a test rig, so I can match injectors quickly and find real answers to the mysteries of how they're rated! Share this post Link to post Share on other sites
pug_ham 244 3 Cars Posted June 22, 2008 IIRC S16 are the same as 1.9 Mi and very close to the 1.9 8v injectors No they aren't, 1.9 Mi & 1.9 8v are the same injectors but the Mi16 & S16 have different injectors; 1984 55 04 - XU9JA 04XU9JAZ 1984 55 04 - XU9JAZ 04 - XU9J4 1984 74 04 ENGINE INJECTOR - INJECTION XU10J4 Graham. Share this post Link to post Share on other sites
M_R_205 5 1 Cars Posted June 22, 2008 The Gti 6 have a twin `nozzle` so they have a wider spray which will probably account to a better mix, therefore acting like a larger cc injector, im no expert but it seems to make sence to me, im using them on my mi16 build when it eventualy happpens, heres a good pic of them... Share this post Link to post Share on other sites
Cameron 16 Posted June 26, 2008 GTi6 have twin nozzles to direct the spray into the port rather than straight at the divider. I can vouch for the fact that they chuck a lot more fuel in than 1.9 Mi ones! When I got the base map on my engine it had Mi injectors, then I swapped to some recon 6 ones on mapping day and it just wouldn't run! Had to make several stops to re-map on the journey up to emerald and used getting on for half a tank in 80 miles! Share this post Link to post Share on other sites
