What Made You Feel Good Today

[Boosting_G6E]

E85 ? sounds about right if its dropping pressure but Doesn't your friend Arron swear by your setup though?

[arronm]

Unfortunately it hasn't worked for me.  I have no doubt the pump is good quality and will be whisper quiet.  I just need more fuel. 

 

I usually always go bigger than what's required.  But this time took the easy way out. 

Hey it will be fine on the street. Have been advised not for 100% throttle for 24 seconds unless we pull a chunk of power out of it.  And I ain't doing that 

Edited 08/05/17 01:23 PM by arronm

[Boosting_G6E]

Hah dam so say 10 seconds is fine at 100% throttle but when you go on with it say flogging it at race wars you would obviously drop pressure?

[arronm]

Yep. Starting to run out during the dyno pull. So some power was taken out. 

[Boosting_G6E]

hah I guess people's way with words are different as I guess on the street you;d have no where to go 100% throttle for over 10 seconds

[JETURBO]

9 hours ago, arronm said:

I have 460 in tank. Keeps the surge full but the single  pierburg can't keep the rail at pressure 

 

You know what Arron, normally I would just write off what's happened as a variation in setups and tuning styles but I think there might be something greater going on regarding your set up 

 

you might not actually be out of pump but out of fuel system flow ... 

 

going back on what you've said to maintain pressure/flow for upto or over 25 seconds is something extremely hard to replicate but the longest I ever do is a 3 rd gear pull to around 6000rpm then click into 4th and pull all the way to 6150rpm and if the fuel system stays at target lambda throughout that process with anything at all in the return line it's a pass and that can be around 18 seconds at 17kmh/per second 

 

typically cars with standard configuration intank swirl pots struggle and you can suck a swirl pot empty on the dyno/street in various conditions the bigger the intank pump the faster it will do it 

 

do you have a standard cradle/module/pot ?

 

ive seen surge tanks suck dry due to the intank set up not filling up fast enough and this is an area some tuners will adress with a big intank pump 

 

you have to realise that a 460 and a Pierberg has so much "potential" flow it's not funny but if there's a bottle neck in the system the fuel may just not be moving fast enough 

 

you said ~470kw with only ~17psi and a 460/Pierberg (0,51) should have that covered for daysssssss 

 

what tests were done to pin point it was enough in the surge but not enough flow out ?

wheres the return plumbed to from the rail ?

what rail ? Twin feeds ? What reg ? Size line on reg ? 

 

I think theres more to this than just a pump assuming it's a genuine 0.51 

 

my combo runs a 255 intank with modified pot,twin feed rail,FPR1200,plumbed to surge return with my spec filter element and a Pierberg 0.51 365ltr genuine pump and that's doing stable 18 seconds at 58psi plus 21.5 ontop with 0.83 lambda target 

 

you might need a better engineered system or throwing another pump on an already struggling supplyed surge might cause further issues and a big bang at the 20 second mark  

[Puffwagon]

41 minutes ago, JETURBO said:

big bang

 

My missus loves that show. 

[JETURBO]

Kaley couco hunnnnnggggggggg 

[arronm]

Picked up car. Idles so sweet with the new injectors. Very happy

 

Decided it will be twin pierburg. They are a nice quite pump. 

 

And the ford balancers are junk. Checked the material. It's a flake graphite cast iron. They didn't even use a nodular iron.  Cheap bastards

 

Anyrate got forged now. 

Edited 09/05/17 06:22 AM by arronm

[Boosting_G6E]

What bends are you using? as that plays a lot of factor more then line size etc

 

 

7 hours ago, JETURBO said:

my combo runs a 255 intank with modified pot,twin feed rail,FPR1200,plumbed to surge return with my spec filter element and a Pierberg 0.51 365ltr genuine pump and that's doing stable 18 seconds at 58psi plus 21.5 ontop with 0.83 lambda target

Wait a second!

 

JD a twin feed rail? why

 

 

My reason for questioning is say if you got all six of your 1700CC injectors and combined each orifice area it would equal to be a far lot less than you'd imagine think of the size of a single alcohol jet meaning they don't give a I <3 Bananas if its feed by one or two lines

as we are currently working on some new LT1 stuff and we have found crazily thin single feed 5mm line to not be a problem with pressure drop etc