spec of the CTR fuel pump

[2nd2none]

Hi Guys,

Does anyone knows what's the spec of the stock CTR fuel pump? Like how many Litre per hour? And also what's the optimum fuel pressure for CTR fuel pump?

 

[evoX2]

CTR & ITR fuel pump is the same or not? how about those non-R fuel pump?

 

[shiroitenshi]

CTR & ITR fuel pump is the same or not? how about those non-R fuel pump?

Not sure, but I asked this question before.. nobody knows.

From what little info I have.. it's definitely below 200lph.

But depending on rail volume, the type R/standard pump should be enough for most applications.

if you're seeing a pressure drop at the rails when your injectors are pushing max duty cycle, then you have fuel pump that's either


a) too little power going into fuel pump, due to electrical load; or...
b) lacking in flow capacity, which means you need to get a better pump.

 

[J101]

dohc vtec ones should be 135lph. by all means itr, ctr, gsr

pressure wise, get it run on a dyno. diff car has diff spec.

 

[2nd2none]

dohc vtec ones should be 135lph. by all means itr, ctr, gsr

pressure wise, get it run on a dyno. diff car has diff spec.

Guys,

Is it Confirm that CTR n da rest of dohc vtec fuel pump is 135LPH?

 

[shiroitenshi]

why do you need exact numberst? If fuel pressure drops when your injectors are maxed out, your pump is too small (or you have issues with your fuel pump).

As for the exact numbers, I don't know.. I don't think anyone has measured the flow rate.

 

[2nd2none]

why do you need exact numberst? If fuel pressure drops when your injectors are maxed out, your pump is too small (or you have issues with your fuel pump).

As for the exact numbers, I don't know.. I don't think anyone has measured the flow rate.

The reason being, i've bought an aftermarket fuel pump which stated as 220LPH. So i'm wondering is that 2 much 4 a b16a. PLus i'm running on a set of CTR cams n CTR pistons.

 

[J101]

enough or not enough you will still require some sort of tuning involve either piggyback or standalone ems. the injectors, the fpr, the fuel pump and the ecu will go hand and hand. run it on the dyno and see if you are actually leaning out with the current fuel pump.

the mitsubishi evos 2L turbo 4WD are using stock fuel pump lesser than 200lph (evo1-8). so u can imagine how much fuel ure pushing now with a 1.6L and 220lph.

 

[shiroitenshi]

The reason being, i've bought an aftermarket fuel pump which stated as 220LPH. So i'm wondering is that 2 much 4 a b16a. PLus i'm running on a set of CTR cams n CTR pistons.

Yes, could be 2 big.. but..I think, depending on your final AFR target, it could be too much.

But I've pushed the stock fuel pump to the limits already, out of curiousity.

For 100% duty cycle on stock injectors, I have slight pressure drop at the regulator +/- .3bar, which means with 240cc injectors running 3.5bar at WOT, the stock fuel pump cannot cope already. I did however achieve 10.3-10.6 AFR at those settings. (this actually was my finding when I tried to figure out what causes the afr curve to spike.)

Interesting, eh?

 

[2nd2none]

Yes, could be 2 big.. but..I think, depending on your final AFR target, it could be too much.

But I've pushed the stock fuel pump to the limits already, out of curiousity.

For 100% duty cycle on stock injectors, I have slight pressure drop at the regulator +/- .3bar, which means with 240cc injectors running 3.5bar at WOT, the stock fuel pump cannot cope already. I did however achieve 10.3-10.6 AFR at those settings. (this actually was my finding when I tried to figure out what causes the afr curve to spike.)

Interesting, eh?

100% duty cycle? isnt that abit way too dangerous? Btw, that means i should get back the CTR fuel pump instead?

 

[shiroitenshi]

Dangerous? Not really.. It can jam if you run it long enough, but it was just a test, so after doing a couple of pulls, reverted back.

Since you already have the fuel pump.. why not use it? futher more, you can put in bigger displacement later, and not need to change fuel pump.