Fuel setup for +600hp
10-21-2013, 03:06 PM
#1
Rennlist Member
Thread Starter
Fuel setup for +600hp
I have no clue what my new GT2 motorsport engine will be putting out with the beefier turbos and no restrictors but I want to make sure the power is not limited by fuel. And I am also concerned about using stock fuel system at the track (starvation in long curves).
The homologation GT2 used a 100 litre FIA fuel Cell with three Bosch 044 pumps running linear (one being a reserve pump). But that was for the engine with smaller turbos and 34.7mm restrictors on the turbo intake.
Ultimately I will throw in a racing cell but I am looking for a phase I setup and thinking I'd get two 044s and run them parallel inside a collector tank. Can I feed the collector tank with the original fuel pump if I also run the return into the collector tank? Or do I need to swap the original 964# fuel pump with a third 044 also?
Something like this (sorry it's in Finnish but you get the idea):
http://www.futurez.fi/fi/shop/poltto...h-044-pumpulle
The homologation GT2 used a 100 litre FIA fuel Cell with three Bosch 044 pumps running linear (one being a reserve pump). But that was for the engine with smaller turbos and 34.7mm restrictors on the turbo intake.
Ultimately I will throw in a racing cell but I am looking for a phase I setup and thinking I'd get two 044s and run them parallel inside a collector tank. Can I feed the collector tank with the original fuel pump if I also run the return into the collector tank? Or do I need to swap the original 964# fuel pump with a third 044 also?
Something like this (sorry it's in Finnish but you get the idea):
http://www.futurez.fi/fi/shop/poltto...h-044-pumpulle
10-21-2013, 04:53 PM
#2
Rennlist Member
I have no idea but that sounds serious!
I got a headache trying to figure out if pumps were better in series for parallel for our application. I put in a 044 pump in series with the stock pump (looked up all the flow rates and there wasn't much of a difference between the 044 vs stock at same pressures - the difficulty is the flow may be listed at 3.8 bar or 5 bar and not both). The older 930's had pumps in series. I supposed it comes down to what's more important Head pressures (series better) or flow (parallel better). Not sure which is better at same pressures (say 5 bar), and which system would allow for more safety. Suspect not much difference.
If you use a stock pump for a 'collector' (I assume you're talking about a reservoir?) that the twin pumps work on, I would think the increased flow from the twin pumps could cause starving since the single pump can't ever keep up... I would think using a collector tank, although sounds very cool, could get tricky.
- need some engineering type to chime in, not really sure what I'm talking about. (lunch is almost over, have to get back to work)
I got a headache trying to figure out if pumps were better in series for parallel for our application. I put in a 044 pump in series with the stock pump (looked up all the flow rates and there wasn't much of a difference between the 044 vs stock at same pressures - the difficulty is the flow may be listed at 3.8 bar or 5 bar and not both). The older 930's had pumps in series. I supposed it comes down to what's more important Head pressures (series better) or flow (parallel better). Not sure which is better at same pressures (say 5 bar), and which system would allow for more safety. Suspect not much difference.
If you use a stock pump for a 'collector' (I assume you're talking about a reservoir?) that the twin pumps work on, I would think the increased flow from the twin pumps could cause starving since the single pump can't ever keep up... I would think using a collector tank, although sounds very cool, could get tricky.
- need some engineering type to chime in, not really sure what I'm talking about. (lunch is almost over, have to get back to work)
10-21-2013, 06:14 PM
#4
Hey Juha , I was planning on using a similar setup for this engine but without the catchtank since the fuel cell i had had a built in catch tank , the injectors you've got are for low pressure (3bar) but can handle a lot of volume the fuel pressure regulator also is a 3bar item so low pressure high volume is the way to go . I do like the idea of only starting the second pump under boost , this saves power and keeps the pumps ( and the fuel )cooler !
I still have some pics to send but i'm experiencing problems with my email account....
I still have some pics to send but i'm experiencing problems with my email account....