Aarkaah

iTrader: (5)

Anyone know of another source for Sard 850cc injectors for our 3rd gens.

DaleClark

iTrader: (55)

Not sure, but most people aren't doing 850cc primaries any more. With a PowerFC they idle rich and are hard to get a good idle on.

If you do need larger primaries going with a good fuel rail and Injector Dynamics injectors is a way better way to do it.

If you just need more fuel on twins, the Rotary Performance 2000cc secondary rail kit is a nice setup. $550 or so with everything. If you need more fuel all around, a Full Function Engineering fuel rail kit and ID injectors is a great way to get more fuel but still have a good idle, easy tuning, and smooth response.

Dale

Smokey The Talon

iTrader: (33)

FWIW I ordered new 850cc injectors about 2 years ago from Mazda directly. Perhaps try a US dealer to see if they have any.

Aarkaah

iTrader: (5)

Thanks for the input Dale. I am looking to get "more fuel on the twins" as we stopped tuning at about 320hp and 12 lbs boost for safety. I want to keep the car on twins for now. Idea was indeed to replace the primaries with the 850cc - I will look further into the Rotary Works suggestion. Much appreciated.

AA

Aarkaah

iTrader: (5)

Smokey,

Was this to replace your secondaries or primaries? I would be interested in the part numbers. However, Dale's post suggest I look at other setups also. Will consider all input especially the note on idle issues on with the 850ccs on primaries..let me know your setup please.

Thanks.

AA

Smokey The Talon

iTrader: (33)

I run the old-school setup of 850s in both primary and secondary's. So my purchase was to actually replace all 4 when doing a refresh on the car. The upside to the 850s as primaries is it's a quick and cheaper way to get the fuel you need. The downside as Dale mentioned is that it'll run rich at idle. I've had good idle on my setup for years with the PFC, but it's definitely rich and stinky. On a mostly track car like mine it's not a huge issue, but for a more street oriented car there are better options these days.

FWIW if you're starting fresh and choosing a new setup, choose the rotary performance option Dale is suggesting. I'm actually looking at doing that option and going back to stock primaries as a way to prepare my setup to go single eventually but still work with twins now.

Aarkaah

iTrader: (5)

Correct we were heading towards the old school setup. The car is in good condition on its original Twins, with low miles and great compression numbers. I don’t really want to go all out on it at this point, just want to improve to where twins can go without any other work. It came with pullies, hks intakes, downpipes, hi flo and super dragger exhausts. I have since added the Greddy smic, AFR guage, and powerfc and stopped after first round of tuning with 320hp and 12 lbs boost. I would like to stop at 350hp and 14 lbs. (scouts promise)

Given this knowledge would you (or Dale) still suggest the secondary kit or the primary 850 option?

DaleClark

iTrader: (55)

Definitely go with larger secondaries. 850cc primaries have gone the way of the dodo - that's a mod left over from days when there just weren't many options out there for adding fuel or bigger injectors.

The Rotary Performance setup is nice because it's a bolt on, it comes with everything you need, it uses the stock fuel pressure regulator and stock lines.

I would also read Banzai Racing's step-by-step of modifying a stock FD and dyne results. You may be able to get where you want with an upgraded and re-wired fuel pump, I think they show how much power they were able to make with the stock injectors. But, RP's fuel rail is a great option to go to the next step if you need that headroom, with that and a good rewired fuel pump you can handle anything the twins can do.

Dale

Aarkaah

iTrader: (5)