Dammit_Dan_954

As the topic says? and @ what hp do u have to get like say an aeromotive and sump the tank?

b18bturbo

it good till around 500hp with some 1000cc injectors

you know when your pump is failing when your fuel pressure drops and your astill boosting at that given level. When you see fuel pressure dropping then you got to be concerned

Dammit_Dan_954

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18bturbo &raquo;</TD></TR><TR><TD CLASS="quote">it good till around 500hp with some 1000cc injectors

you know when your pump is failing when your fuel pressure drops and your astill boosting at that given level. When you see fuel pressure dropping then you got to be concerned</TD></TR></TABLE>

I have 750cc. So how much HP u think?

b18bturbo

youll max the injector out probably at 390-425hp easily at about 90-100% duty

B17aTrbo

Not to thread jack but what is it with 880's? How do you know or is it just from experience?

Short Round

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18bturbo &raquo;</TD></TR><TR><TD CLASS="quote">youll max the injector out probably at 390-425hp easily at about 90-100% duty</TD></TR></TABLE>

@ stock fuel pressure?

JDogg

i have done a little math and figured out that if you are maxing out 880's then you are getting very close to the edge on a walbro 255lph high pressure. if you have the low pressure then the limit is even lower, it cant sustain the flow as the pressure goes up.

raene

How about a 190lph pump?

b18bturbo

experience running honda engines pluse you can learn alot from the EFI101.com forums and from taking there classes

b18bturbo

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by raene &raquo;</TD></TR><TR><TD CLASS="quote">How about a 190lph pump?</TD></TR></TABLE>

190lph pump i wont got past 300hp on any type of injector

raene

Awesome... very awesome. That's easily within my goals. Thanks

Kataku2K3

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18bturbo &raquo;</TD></TR><TR><TD CLASS="quote">it good till around 500hp with some 1000cc injectors you know when your pump is failing when your fuel pressure drops and your astill boosting at that given level.</TD></TR></TABLE>
We've never taken an intank this far nor do I think it's possible... Even with 1000's you're still going to drop pressure long before you hit 500whp... With Lane's (375whp) and Brian's (560whp) EJ6's we have to run MSD inline booster pumps (along with a 255 intank) and 900's... This has been the only inexpensive way to stop the fuel pressure from dropping even under boost... We'll throw an inline in at ~300whp (really a ballpark number) unless we see the FP dropping before then, at which time it's not even worth it to dyno... We dynoed a stock B16A with a DRAG kit the other day running 6lbs. and even with his BBK 255 intake we were dropping 5psi over the rail under boost... It made like 200whp then we couldn't do anymore (atleast until he got an inline or something of the like)... We've seen problems like his before because you really shouldn't have any problems at 200whp but everything in the fuel system except for the stock hardlines had been changed... I would definately say get an intank and see what you need from there... Just my $0.02

Dammit_Dan_954

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kataku2K3 &raquo;</TD></TR><TR><TD CLASS="quote">
We've never taken an intank this far nor do I think it's possible... Even with 1000's you're still going to drop pressure long before you hit 500whp... With Lane's (375whp) and Brian's (560whp) EJ6's we have to run MSD inline booster pumps (along with a 255 intank) and 900's... This has been the only inexpensive way to stop the fuel pressure from dropping even under boost... We'll throw an inline in at ~300whp (really a ballpark number) unless we see the FP dropping before then, at which time it's not even worth it to dyno... We dynoed a stock B16A with a DRAG kit the other day running 6lbs. and even with his BBK 255 intake we were dropping 5psi over the rail under boost... It made like 200whp then we couldn't do anymore (atleast until he got an inline or something of the like)... We've seen problems like his before because you really shouldn't have any problems at 200whp but everything in the fuel system except for the stock hardlines had been changed... I would definately say get an intank and see what you need from there... Just my $0.02</TD></TR></TABLE>

Can I add a 255lph inline in the engine bay? Would that help keep the pressure up? How much HP do u think the 750cc's with the intank and inline pump can handle before they reach there full duty cycle?

JDogg

we were making 510 at the wheel (only at 7000rpms, couldnt go higher b/c of hte clutch) with all stock fuel lines and a walbro hp255lph pump, the fuel pressure was staying constant

hybrid901

I made 531whp with a 255lph pump, stock lines, and 780cc injectors. I know its not the safest but fuel pressure didn't drop at all. I did try and run a 50 shot on top of it and pressure did drop.

Short Round

https://honda-tech.com/zerothread?id=678309

Kataku2K3

The intanks are not meant to work as an inline pump so i probably would recommend it... You guys must have some awesome luck or something, we have just about alway had to run a booster pump even running mild boost (~12-14lbs.)... hybrid901 why did your FP drop with nitrous? If it was a dry kit that's just all the more reason for your pressure to stay up (so long as your pump can support it)...

BodyKits NW

Ground Zero dynoed my car with my Walbro Intank and it made 342whp on there Mustang Dyno, and no problems at all. I got plenty of injector left, and I feel I can still up the boost. We'll see, everyone has their own experience.

XXXRacing

I think that you can make 500+ on an in tank pump. Jason Hunt probably makes close to 600hp in his crx. I probably made around 500ish with 810cc injectors. (don't know because cars haven't been on a dyno). I'll let you know in a few weeks what it can handle with 1000 cc injectors.

shermanyang

iTrader: (1)

i plan on adding in an intank...i noticed a few days ago my fuel pressure dropping in the higher rpms. this would just probably be for added security.