anyone got any ideas what size injectors i can go up to on stock ports?
would it be best to go for larger injectors or just add a couple of extra injectors instead?
will have the following:
blitz LM intake
front mount IC
Blitz BOV
downpipe decat 3" all the way through =)
air pump removed
apexi pfc
xspower custom tubby with ext wastegate (A/R 1.15 on exhaust)
[http://www.mazdarotaryclub.com/forums/showthread.php?t=52559&highlight=xs+power+turbo]
boost controller
walbro fuel pump
You need to get hold of the CFM data for the turbo - find out how much air that thing can flow. Base your injectos on that.In simple terms, calculate the air flowing in one minute (assuming max boost) and you will get an idea for the amount of fuel required - if you work on 11-1 AFR, then you need 1 lb fuel for every 11lbs of air. You will have to convert at some point from imperial to metric. Then with the fuel amount per minute, you should be able to pick suitable injectors (you should aim for injectors that are providing that fuel amount at say 80%.I would stick with the 550 primaries, and go with larger secondaries. You will need 1000cc secondaries to take you any where near 400BHP.You may have to port the engine to get the turbo to spool up nicely. ;)
Quote from: Prof;562991You need to get hold of the CFM data for the turbo - find out how much air that thing can flow. Base your injectos on that.In simple terms, calculate the air flowing in one minute (assuming max boost) and you will get an idea for the amount of fuel required - if you work on 11-1 AFR, then you need 1 lb fuel for every 11lbs of air. You will have to convert at some point from imperial to metric. Then with the fuel amount per minute, you should be able to pick suitable injectors (you should aim for injectors that are providing that fuel amount at say 80%.I would stick with the 550 primaries, and go with larger secondaries. You will need 1000cc secondaries to take you any where near 400BHP.You may have to port the engine to get the turbo to spool up nicely. ;)
hmm.. that easy :Hammer
CFM.. i got the tub from pete so he might know..
wanna port the engine but not enough $$$ atm so just make the most of what is reasonably within reach :)
how can i find the CFM?
Im going to run 1000CC secondaries :) race ya to 400bhp :D ps, mine has a 1.15 ar hot side, and I just saw an XS power rotary turbo on ebay and thats 0.6 ar cold side as well lol the difference being is that mine is a T3 and your is a T4 :(
Quote from: m1tch;563147Im going to run 1000CC secondaries :) race ya to 400bhp :D ps, mine has a 1.15 ar hot side, and I just saw an XS power rotary turbo on ebay and thats 0.6 ar cold side as well lol the difference being is that mine is a T3 and your is a T4 :(
i need to find out more about this a/r biz...
think mine was 1.16 hot side or so.. i nt got tubby here so cant see.. its at gals place. will get nxt week.
not sure about cold side as you kno its custom made so...
i thought urs was T4. all i kno is T3 is smaller than T4.
im aiming for 350-400.
im up for the race there. wot ecu u gonna run?
only condition for race is for using stock ports cos i cant afford to port yet haha :3gears-rh
i jus need ot find a pfc, injectors n boost controller then i can chuck in my tubby :rollin