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fuel rails for TT?

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Old 01-25-2008 | 11:59 AM
  #1  
soulefood's Avatar
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From: elizabeth city, NC
Car: '84 firebird
Engine: Twin Turbo 350
Transmission: TCI competition 350t
Axle/Gears: dana 60 4:56
fuel rails for TT?

I've got a twin turbo 350 build in the process.. i bought a TPI unit off ebay and just threw that on the top for a simple fuel injection upgrade from a carbuerator. jegs now makes two npt fittings that thread into the stock fuel lines so you can hook up an-6 lines to your stock fuel rails. but someone on here was talking about the stock fuel lines maxing out. so the small amount of fuel lines from the fitting to the rails is gonna be restrictive? guys, throw me some ideas as to getting all that fuel i need for those turbos
Old 01-25-2008 | 11:35 PM
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Drac0nic's Avatar
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Re: fuel rails for TT?

Originally Posted by soulefood
I've got a twin turbo 350 build in the process.. i bought a TPI unit off ebay and just threw that on the top for a simple fuel injection upgrade from a carbuerator. jegs now makes two npt fittings that thread into the stock fuel lines so you can hook up an-6 lines to your stock fuel rails. but someone on here was talking about the stock fuel lines maxing out. so the small amount of fuel lines from the fitting to the rails is gonna be restrictive? guys, throw me some ideas as to getting all that fuel i need for those turbos
it may not be restrictive to your setup, but be warned there is a 1/8 inch orfice in the end of the feed rail. I've seen em set up for -AN fittings on the end (two -6 lines) the rails are quite large internally and it would be no surprise to me if they would support an immense amount of power other than the restrictor. There was a guy on ebay who would TIG the fittings in for about 75 bucks, dunno if he is still doing it or not. It's not that hard though, you cant find it I'll dig pics up.
Old 01-27-2008 | 10:55 AM
  #3  
soulefood's Avatar
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Joined: Nov 2006
Posts: 26
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From: elizabeth city, NC
Car: '84 firebird
Engine: Twin Turbo 350
Transmission: TCI competition 350t
Axle/Gears: dana 60 4:56
Re: fuel rails for TT?

yeah that would be great... a friend of mine sent his to a machine shop and they got rid of the stock fuel pressure regulator and just tigged a bigger open tube where the regulator had been. another friend told me if i had a big enough fuel pump that it would just bypass the stock one and use my aftermarket one... you got any idea what hes talking about?
Old 01-28-2008 | 02:28 PM
  #4  
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Re: fuel rails for TT?

Sorry couldn't find the pic of the rail restrictor, but here is the mod. You can do it to the original location rather than the back like they did if you want. That being said, I would run dual feeds to both lines that way the cross over line doesn't become a restriction. If you cut the original line in the front off and look in the rail, it has a 1/8" orfice in it, you can just drill it out then thread it and TIG a couple of AN fittings in like this.

http://cgi.ebay.com/ebaymotors/TPI-T...em110202316644
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