Jump to content
SAU Community

Recommended Posts

hey guys i was wondering would highflowing your standard rb25det injectors be worth it. i have heard you can highflow the standard injectors to 740cc at the fraction of the cost of aftermarket injectors like sard etc.

im ony looking at putting a hypergear atr43 g3 on my rb25det and running roughly 18psi im only looking for about 340rwkw max would thisd be a better option than buying aftermarket injectors?

if so where can i get them highflowed in perth

Link to comment
https://www.sau.com.au/forums/topic/349253-highflowing-injectors/
Share on other sites

  • Replies 48
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

I'm also looking into this option.

Injectors for RB engines seem really really over prices compared to say an LS1/XR6 Turbo

yeah i know and im only looking at running it as a streeter nothing special so why spend the big bucks on aftermarkets when i can get same thing for fraction of cost. i have spoken to a few people that have got them and they say they have not had a problem

Im interested in how much bigger you can get them and whether the flow characteristics are a compromise over proper sized injectors.

from what i have read rb25de injectors you can highflow to 550cc and rb25det injectors can be highflowed to 740cc. the flow characteristics im unsure ill search some more and find out

I have a set of 1000cc Rochesters (top feed) for $400 delivered if you are interested?

nah sorry mate its only a streeter and 1000cc will be over kill and plus i dont want to go to top feed i rather stick to the side feeds

people who say that are retarded, you can have 500hp and still get great fuel economy, the two aren't exclusive, you spend about 5% of the time on full boost in a street car so you can retain your 13L/100km and still make massive power.

You save what $500 highflowing injectors? you'd make that back in a single year if you are using 2L/100km more and driving roughly 450km a week, also you'd get a better idle and cruise.

people who say that are retarded, you can have 500hp and still get great fuel economy, the two aren't exclusive, you spend about 5% of the time on full boost in a street car so you can retain your 13L/100km and still make massive power.

You save what $500 highflowing injectors? you'd make that back in a single year if you are using 2L/100km more and driving roughly 450km a week, also you'd get a better idle and cruise.

13L/100km? f**k that lol....around town = 11L/100km, and highway = ~9.2L/100km when my car was standard.

13L/100km? f**k that lol....around town = 11L/100km, and highway = ~9.2L/100km when my car was standard.

if you honestly got 11/100 around town then you must have had a very well sorted tune and driven it very easily.

the 13 I get is peak hour driving everyday with a lead foot and 240kw, I think it is pretty damn good.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • If your current chain of thought is, I'll go somewhere like pick and payless (or equivalent) and causally remove the bit of roof with your BYO grinder then casually weld that into your car... oof. It might sound easy but you will 100% end up with a warped roof. You say you'd prefer some ugly fab work, but I don't know if your prepared for how ugly this will be lol.  I've seen professional welders do similar but easier repairs and still end up with warped panels.  It is reasonable to assume that from your current skill level, you won't be able to do this cut and paste job while keeping flat panels.  Ok, but we are here to learn. This might be the go... jump on car sales, sort by price, buy the cheapest thing with rego and drive it home. This is your new practice vehicle. If you're thinking of doing the cut and paste job, try it on this car. Cut out the panel (hey it's a perfect fit) weld in the panel. See what you think of the results.  Next thing you could try, practice removing the entire roof in one piece by drilling out all the spot welds etc. Have a crack and welding the roof back on.   
    • I've never welded but I own a welder and I've always wanted to learn. In fact I had already looked at a 1 day welding course in Sydney.  I'd prefer some ugly metal fab than anything weak.  I'm challenging myself a lot with this car. For so many years I've just paid other people to do things and I've always been keen to learn and get better.
    • Ok, thats a good starting point.  So before we start.... do you mind if the car say isn't a strong as it was before? My first thought is go excavating for rust. You'll be left with a gaping hole, that will be filled with fiberglass. You could make it look factory pretty easily but yeah, if you never crash it will never be an issue right? Before we look at other options, how confident are you welding? 
    • Oh this is my 1998 E39 5 series. It's worth more to me than financial value. It's a project car for me to love and work on without fear of f**king up something that has lots of value or that I need to keep running.
    • I'm super realistic here. I love the car and want to keep it but I know it's days of perfect condition are well and truly over. I just want a fix that won't come back. 
×
×
  • Create New...