Hey guys,
Considering you guys are so helpful just have once again another queston for yas...
My bt1 runs with a hi-low switch. 7psi on low and 16-18 on high (still trying to put my finger on it) and im pretty sure i have a stock computer... is this damaging to the engine on High boost and also i have an extra fuel injector that is connected to my piping.. ive been told that its a strange thing running an extra injector with a stock computer and was thinking should i have another ecu for just that injector... any info will be a great help coz the last thing i want to be doing is building another motor for my pride and joy at this stage...
Thanks boys
well the factory fuel system is good for about 14psi so i would say that your
16psi is about spot on for an extra injector setup.
while the extra injector setup can work well it can also work poorly depending on how it has been setup.
if you could get some pics of the injector and also the wiring it would be good
nah its probly not running off an ecu but off a hobbs pressure switch.
its not advised you run that amout of boost on a stock fuel system my sugestion is chuck it on a dyno if it leans out a bit winde down the boost or put a bigger injector
thanks once again boys.. will get some pics up more than likely tommorow.. thanks for your help and info..
also has solids instead of the normal hidraulic lifters witch im guessing just helps out the heads yeh?
Quote:
Originally Posted by STONE RACING
get it on a dyno and see how its running if all if good on the dyno then theres no probs..
no worries boys,
just remembering do all vl`s come out with a bosch fuel pump stock as mine had one fitted (not knowing if it was bigger or not) a while ago, so therefore i might be getting more fuel than u r thinking... cars booked in for dyno next week
Some original photos have not been recovered yet.
If your funds allow a decent aftermarket ECU then that would be a more wiser choice then risking high boost on a Factory ECU and Rebuild of a New Motor.
An extra injector regardless, still runs of the factory computer, it still uses the factory
injector pulse width, the hobbs pressure switch just turns it on and off.
unless you use a microfueller, but if you are thinking about that, it is not much
more to buy a full aftermarket ecu these days
cheers
darren
Hey boys,
just a few pics on the injector setup and Duz360 if you could tell me what you think it would be greatly appreciated...
Just reply or pm me and tell me what you think... any info would be more than helpful.. Thanks
Shaun
Some original photos have not been recovered yet.
My VL had a similar setup when I first bought it, extra injector triggered off a Hobbs switch at 13psi or so...felt like secondaries opening on a carby car...crude.
What my inlet manifold looked like, Hobbs switch is on the right.
Some original photos have not been recovered yet.
it looks like a cold start injector which is good because they generally dont pulse like a normal injector does.
that injector will provide constant fuel when activated and is therefore much safer
Quote:
Originally Posted by david85dc
sound be fine. looks like u know what ur doin mate. good luck
so our final decision is its ok???
And stone racing i wasnt asking if you thought it was a bad idea... could have done without that kind of opinion..now you make me s h i t myself...lol
I had an extra injector set up just like urs on my VLt for years and it worked fine. Mixtures on the dyno were OK (12.1:1) but having said that the down side of an extra injector set up is that you really can't see if one of the cylinders is leaning out due to poor distribution of fuel by the extra injector.
This is because when the extra injector is activated it shoots fuel down the inlet manifold and not all 6 cylinders are going to get an even ditribution of fuel. Taking the spark plugs out and checking them is a good idea after a full power run to get a rough idea how rich/lean each cylinder is.
Nothing beats 6 big injectors for even cylinder to cylinder fuel distribution. This is where after-market ECU's/piggyback ECU's are needed.
duz360
How can u tell it's a cold start injector from the pics?
I hope you're not coming to that conclusion from the mounting bracket the injector is in. That is exactly like the one i had and i had a standard VLt injector in it and then replaced it with a bosch 036 later on.
Off_duty
Check the wires that connect to ur injectors and you should find that one would have been spliced and a wire run from there (to get the injector signal)to the hobbs switch.
Best advice is get it on the dyno to check the overall mixtures.
FYI I ran my VLt with 6 standard injectors, bosch 044 pump, hobbs switch extra injector like urs, high flow t3 turbo and a front mount intercooler and could run 15psi safely.
Quote:
Originally Posted by Off_Duty
so our final decision is its ok???
And stone racing i wasnt asking if you thought it was a bad idea... could have done without that kind of opinion..now you make me s h i t myself...lol
ha ha nah it will be kool man but over time it will probly crack from the heat just keep an eye on it when it gets really hard and you cant bend it easy its time to change it and yeh the dyno will tell you all you need to know about how its running.. post up results
[quote=Archie]duz360
How can u tell it's a cold start injector from the pics?
I hope you're not coming to that conclusion from the mounting bracket the injector is in. That is exactly like the one i had and i had a standard VLt injector in it and then replaced it with a bosch 036 later on.
i said it looks like one.
from them pics its pretty hard to tell obviously
