injectors for a t28 powered dc4

Quote:

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Originally Posted by locote

are RC injectors classified as good injectors??

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Definitely. What they really are is injectors made by Lucas IIRC that have been finely calibrated to a high tolerance.

*strokes his injectors while drooling...

A meager 200whp is a little under double stock power for an LS motor (I dyno'd at 114hp for example). 440cc injectors are a little under double the size. The stock fuel pressure regulator is rising rate, so you will be rising in fuel pressure with boost. Stock duty cycle is around 87% or so, so with a higher fuel pressure you'll certainly be close to that magical 80% number.

I definately vote you buy larger ones though. I bought 650cc's for future upgrades since my final goal is around 400whp (hopefully they will be enough with 50psi fuel pressure or so). If your buying new, the price difference is hardly much at all in the scheme of things.

dude
get 550cc ...
i have a turbo dc4 and i am getting 550cc injectors ...
if you want high power and high boost get 550cc injectors
if you want to be a rice burner and just wooosht everyone in the street youll be good with 440

Quote:

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Originally Posted by integrity

dude
get 550cc ...
i have a turbo dc4 and i am getting 550cc injectors ...
if you want high power and high boost get 550cc injectors
if you want to be a rice burner and just wooosht everyone in the street youll be good with 440

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Woo captain knowledge steps up to the plate! That 25% increase in cc rating is surely the difference between a 'rice burner' and 'high power and high boost'. Good choice.

Did I mention I have some RC 550's for sale? ;)

if you want "high power" and "high boost", you're going to need a whole lot bigger than 550cc injectors...

t28 - 440... plenti for it's application :D

We seem to be going around in circles again. ;)

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Originally Posted by Andreas Miko

This is a conservative rating at 3 bar (Fuel Pressure)

Side Feed Injs

23 cc = 16 WHP
46 cc = 31 WHP
93 cc = 63 WHP
139 cc = 94 WHP
185 cc = 125 WHP * Pink
231 cc = 156 WHP
259 cc = 175 WHP * Red
278 cc = 187 WHP
324 cc = 218 WHP
333 cc = 226 WHP * Grey
---------------------------------------------333 cc @ 4 bar = 261 WHP
370 cc = 250 WHP * Purple
---------------------------------------------370 cc @ 4 bar = 290 WHP
416 cc = 281 WHP
444 cc = 299 WHP * Brick Brown
---------------------------------------------444 cc @ 4 bar = 345 WHP
462 cc = 312 WHP
509 cc = 342 WHP
555 cc = 373 WHP * Yellow
---------------------------------------------555 cc @ 4 bar = 423 WHP
601 cc = 405 WHP * Yellow Tomei
---------------------------------------------601 cc @ 4 bar = 457 WHP
647 cc = 436 WHP
692 cc = 468 WHP
740 cc = 500 WHP * Red
---------------------------------------------740 cc @ 4 bar = 580 WHP

850 cc = 570 WHP SARD
---------------------------------------------850 cc @ 4 bar = 660 WHP

MSD Top Feed Injs

36 lb = 250 WHP
50 lb = 355 WHP
72 lb = 520 WHP
96 lb = 690 WHP

MSD Injs do not run right at 4 bar so don't try it.

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with the above general guideline, you would at least want to over do your applicatio A BIT... this is coz you don't want your injector duty cycle reaching like 90% at high rpm and then something goes wrong like injector wiring or it goes faulty.... this will lead to fuel starvation and a destroyed engine.

not sure what HP figure your after for your car but as a general STOCKISH bolt on (based on a mates DC2vtir turbo setup VAM05Z) the 440cc would be a good starting point with the added safety.....

im running a gt2832r in mine and 550cc is good to get me to 250kw ATW with a strong driveshaft

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Originally Posted by integrity

im running a gt2832r in mine and 550cc is good to get me to 250kw ATW with a strong driveshaft

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fair enough... however what is your injector duty cycle % at peak boost/rpm/KW?? and what is your peak KW that you are getting with this setup?

if you can provide this info it will tell a good benchmark for everyone to learn from...