IHADAV8.com - Turbo Buick Tech, and Nonsense

Tech Area => General Buick Tech => Topic started by: Scoobum on December 17 2014, 04:31:11 PM

Title: Fuel Rail-When to Upgrade?
Post by: Scoobum on December 17 2014, 04:31:11 PM
Gonna try and squeeze my POS to a 6.3 to a 6.5 next year. Question is this. Do I need to upgrade to a Champion fuel rail...or will the stocker take me there safely?
Title: Re: Fuel Rail-When to Upgrade?
Post by: TexasT on December 17 2014, 08:09:04 PM
Do you think it is leaning out or on the verge of it? How much larger is the champion piece? I would think a larger feed line would be a better mod but I'm not running that quickly yet.

Id keep an eye on the numbers and the plugs.
Title: Re: Fuel Rail-When to Upgrade?
Post by: Steve Wood on December 18 2014, 10:11:52 AM
I believe you will be fine
Title: Re: Fuel Rail-When to Upgrade?
Post by: Joe Buick on December 18 2014, 10:57:05 AM
I think so too. The stock rail should be good for 9's on the 1/4. Size of Injectors will matter.
Title: Re: Fuel Rail-When to Upgrade?
Post by: Scoobum on December 20 2014, 08:14:20 AM
Thanks for the replies everyone. The 60's were pretty much maxed out at 6.7...so I'm going with 80's and a matching race chip from Eric...with plenty of high gear fuel added. Also going with the Racetronix fuel feed/return line kit and 340 LPH pump/SS hanger.
Title: Re: Fuel Rail-When to Upgrade?
Post by: good2win22 on December 20 2014, 12:40:29 PM
Thanks for the replies everyone. The 60's were pretty much maxed out at 6.7...so I'm going with 80's and a matching race chip from Eric...with plenty of high gear fuel added. Also going with the Racetronix fuel feed/return line kit and 340 LPH pump/SS hanger.
What is the determining factor for maxing out the injector? I guess what is a safe percentage?
Title: Re: Fuel Rail-When to Upgrade?
Post by: Scoobum on December 20 2014, 12:43:07 PM
PL was showing IDC in the 90's. Erics site says 60's are good for about mid 10's with race gas...which equates to the 6.7 I ran. He's a smart guy. :)
Title: Re: Fuel Rail-When to Upgrade?
Post by: motorhead on December 22 2014, 09:49:29 AM
You'll do fine with the stock rail, but upgrading the size of the inlet and outlet would help.
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