Been searching but cant find the info that i am looking for

My goal is 400-500 HP Just say 500HP

Block has H beam Rods, Turbo Pistons block guard Freshly Built, Head has valve springs and retainers other then that pretty much stock.


Do i need a adjustable FPR and an-6 Feed line?

If i do go with a adj FPR i am most likely going with a AEM fuel rail as well just because I want to have a fuel pressure gauge mounted on the rail. Dont really have mych space at the filter for the gauge


thanks

 

Depends on what size injectors you're using. 1000cc injectors can get you to 500BHP safely on stock pressure though.

 

Ohh yea I am sorry forgot that most important detail. I am going with 1000cc ID injectors.

are you saying no need for the feed line?

Also its a B18c1 one size overbore WIth B16 Head and skunk2 intake manifold

 

I could be wrong, but I don't believe there's any need for an upgraded feed line, rail, or FPR.

 

well -6 is 6/16 and the oem line i believe is 5/16 so....

i use a stock fuel pressure regulator and 880's, but have an aftermarket rail so i can run a fp gauge for diagnostic purposes

 

Great info I am leaning twards that myself so your saying you use the stock line? what HP are you at

 

That's one way to do it. There's also a kit out there that replaces the banjo bolt on top of stock-style fuel filters that will allow you to run a fuel pressure gauge, and it's a good bit cheaper than a fuel rail/gauge combo.

Marshall Fuel Pressure Gauge

 

Yea I have seen those I would need to get the right angled Banjo Bolt to clear my hood i think. Just seems easier @ the rail


also you guys using walbro 255's? I am not even sure that my stock FPR is letting enough Pressure back to be honest

 

Actually, I just found some good information from ID.



Not a single one of those combos lists the fuel lines as a restriction. I wouldn't worry about it. Yes, for your power goal, you should definitely get a Walbro 255. No way in hell the stock pump is going to flow enough for 600. It's also internally capped at 75 PSI, so even if you tried to use an adjustable FPR to "make" it do what you need it to, it still won't work.

 

Great info I appreciate all the info. Saves me some money I still need to get my turbo kit, waiting for the new street x systems from go autoworks pricing. Or ill by from synapse turbo. just sorting out small details.....I think the last thing i need right now is injectors.

 

Laskey racing has a nice fuel rail for a hundred bucks

If you get lines go with b&R fittings they have good quality lines and fittings.

 

no point in a 6an feedline, same size as stock basically.

if you're trying to make that much power I would hope that you would already know the stock pump wouldn't even come remotely close to support half that power... and as previously mentioned the OEM pumps bypass opens at 75psi which would kill most of the pressure and most of the pump flow

 

I should have been more straight forward but i have a walbro 255. One of the reasons I was looking into adj fpr is i am not sure my stock fpr can bypass enough fule back to the tank I am gonna grab a fuel pressure tester this weekend to double check just that

 

If you have the 255 high pressure pump, the stock regulator will raise the pressure up about 10 psi. However, your tuner will be able to compensate for it.

If you are planing on running high boost levels to get to your horsepower goal, you may need to lower the fuel pressure. The intank pumps don't flow to well at higher pressure's.

 

440 on pump gas, made 475 on the dyno at 16 psi with c12, have had it up around 18 psi at the track.

for your 400-500hp goal its pretty straight foward, once you start getting into the mid and upper 500hp range you really need to upgrade a bunch of stuff like more fuel pump than walbro255, probably a twin disc clutch etc...