Technical Forums» Technical / Performance» kinked fuel regulator lines
|
tris » CMF Member sydney Australia Member since:  Posts:  |
kinked fuel regulator lines |
Mon 29 Oct 2007 10:59:49 PM |
|
just been reading in the articles section about extractors and fuel supply to the engine(i just got some extractors however havnt got them on the car yet)and it says that you wont notice too much untill you supply the engine with more fuel.
http://www.micra.com.au/technical-articles/1500powerup.php there is a way to kink the fuel regulator line or something to make it think it doesnt have enough fuel. has anyone done it?? and does it work?? im thinking it sounds a bit dogey. any ways to do the same thing properly? tris |
||
|
|
||
|
Yom » CMF Member Brisbane Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Mon 29 Oct 2007 11:29:57 PM |
|
You will definately notice an improvement in driveability with the extractors fitted. :)
Don't go playing with the fuelling yet. |
||
|
smidge » CMF Member Sydney Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 12:15:30 AM |
|
adjustable fuel pressure reg is another way to go about it, i've never actually played with one much before but i think i will in the near future
basically just a way to increase fuel pressure and get more fuel through the same sized and same pulsed injectors |
||
|
mipcar » CMF Member Upper Beaconsfield Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 08:18:21 AM |
|
Some cars seem to benefit from it, other don't. Once your extractors are fitted you should get your car tested on a dyno to see if it is running lean.
Some did once they had extractors fitted, some did not. Mychael |
||
|
tris » CMF Member sydney Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 10:21:45 AM |
|
ok thanks! yeh ill just see how it does without playing with the fuel pressure... still gota sort out exhaust for it anyway
tris smidge, when you do eventualy try with a fuel regulator let us know how it goes!! id be interested. maybe just some pulsar injectors or something would be more worth it. there is a direct swap from stock micra injectors to pulsar injectors, right?? or does it need a new computer or something |
||
|
frank2 » CMF Member birmingham United Kingdom Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 10:29:10 AM |
|
tris
you can dish the top of the factory pressure relief valve with a socket and vise, i took mine from 35 psi to 50 psi with a 2 mm dish. |
||
|
tris » CMF Member sydney Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 10:30:28 AM |
|
sorry... i have no idea what that is... haha can you explain it please?? sounds like an option!!
|
||
|
frank2 » CMF Member birmingham United Kingdom Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 10:39:36 AM |
|
tris
at the end of the fuel rail there,s a valve that returns any fuel over 35 psi back to the tank (pump pushes out 70 psi i think) so if you squash the top of the p/r/valve, it pushes down on the spring, which makes it "blow off" at a higher pressure |
||
|
tris » CMF Member sydney Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 10:47:16 AM |
|
ahh k ill check it out!! thanks
|
||
|
frank2 » CMF Member birmingham United Kingdom Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 10:55:53 AM |
|
its a bit less crude than kinking the return pipe imo.
you can test the valve on a spraybooth air regulator (increase the pressure till you hear it blow off) but i found a 2mm dish in the top was ok. i think 1.3s tend to lean out at high revs with an extractor exh fitted so the modded valve will supply more fuel when the injectors are maxing out |
||
|
deNs » CMF Member Melbourne Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 04:41:55 PM |
|
When the injectors are running out or when the fuel pressure isn't high enough? Are the standard injectors inadequate for a extractors + larger air intake setup?
---dens |
||
|
Yom » CMF Member Brisbane Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 05:14:49 PM |
|
deNs WROTE: "When the injectors are running out or when the fuel pressure isn't high enough? Are the standard injectors inadequate for a extractors + larger air intake setup? ---dens" I would say yes, yes they are. site member GTRHOLIC found his standard micra injectors were maxxed out with the impul exhaust and ga15 intake /pod. Yes he had some Tomei cams but where his injectors were maxxing out its pretty clear that a standard cammed motor would probably start running of fuel higher up in the rev range. |
||
|
deNs » CMF Member Melbourne Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 05:45:51 PM |
|
Would the easiest solution then to graft the SR20 fuel rail with the CG13 one or is there another option before going SR20 injectors?
---dens |
||
|
Yom » CMF Member Brisbane Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 05:50:21 PM |
|
SR20 injectors are everywhere.
Most likely a better option than anything else (even the elusive primera injectors) and there'll be plenty of room for the SR injectors to play with a CG13DE. |
||
|
mipcar » CMF Member Upper Beaconsfield Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 09:17:03 PM |
|
Dyno first. Not all cars needed it. Don't spend money when you don't need to.
Mychael |
||
|
Yom » CMF Member Brisbane Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 09:58:32 PM |
|
^^ My thoughts exactly.
No point in spending money when its not required. |
||
|
deNs » CMF Member Melbourne Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Tue 30 Oct 2007 11:07:46 PM |
|
Totally agree, just was asking for curiosity's sake. Not like i'll be able to afford the bits I want for my car for a while to come yet anyhow :P
---dens |
||
|
tris » CMF Member sydney Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Wed 31 Oct 2007 10:01:16 AM |
|
Yom WROTE: "SR20 injectors are everywhere. Most likely a better option than anything else (even the elusive primera injectors) and there'll be plenty of room for the SR injectors to play with a CG13DE." is it realy necessary for new injectors though?? cos as frank said the fuel pump is capable of 70 psi... its just a matter of being able to use that. also frank do you rekon you could take some pics of the piece you mean... i can see at the end theres like a little cylendar thing with a small metal pipe coming off is that it?? if so where is the actual valve bit?? |
||
|
frank2 » CMF Member birmingham United Kingdom Member since: Posts: |
Re: kinked fuel regulator lines |
Wed 31 Oct 2007 10:47:08 AM |
|
tris
could,nt get a good angle to show the dish,but thats the p/r/valve, the spring is housed in the top by the smaller vacuum pipe (some k11,s its 90 deg bent so you have to grind a slot in the socket you use to squash the top down) |
||
Image Attached:
|
||
|
tris » CMF Member sydney Australia Member since: Posts: |
Re: kinked fuel regulator lines |
Wed 31 Oct 2007 11:12:40 AM |
|
so its this bit right?? youve just put a socket over that black rubber pipe and hit it to make a dish in the top of the tophat looking piece?? how exactly does that work?? i guess you probably have to know bout how the valve works tho ay
thanks, i appreciate it!! |
||
Image Attached:
|
||
|
frank2 » CMF Member birmingham United Kingdom Member since: Posts: |
Re: kinked fuel regulator lines |
Wed 31 Oct 2007 11:19:30 AM |
|
tris
ye thats the one, i would,nt hit it with a hammer tho you,ll bust it ! like i said i sqeezed it in a vice CAREFULLY ! if you can get a spare one, cut it open and you,ll be a bit wiser ? |
||