kahmann Posted January 22, 2009 Report Share Posted January 22, 2009 Has anyone installed aftermarket fuel rails (like these: http://store.summitracing.com/partdetail.a...17&FROM=MG) or bigger injectors in a 4.6? If so, what brand and what gains did you see? Ken Link to comment Share on other sites More sharing options...
kahmann Posted January 29, 2009 Author Report Share Posted January 29, 2009 I also found these fuel rails from MMR. Ken Link to comment Share on other sites More sharing options...
WildAzCat Posted January 29, 2009 Report Share Posted January 29, 2009 Link to comment Share on other sites More sharing options...
kahmann Posted March 2, 2009 Author Report Share Posted March 2, 2009 Bump (especially for the SC'ed SGTs). Hasn't anyone upgraded their fuel delivery systems beyond pumps? Any info on this much appreciated. Ken Link to comment Share on other sites More sharing options...
kahmann Posted March 2, 2009 Author Report Share Posted March 2, 2009 I havent seen the need to upgrade my fuel system I retuned and redynoed my gtsc right @ 512 rwhp the fuel rails are fine no sign of leaning out or flow issues. the aftermrkt fuel rails look good but I dont think performance wise that they are all that. Thanks for your input. If anyone has actually installed these, please let me know. I'm curious as to the benefit/gains, disadvantages, and install info. Ken Link to comment Share on other sites More sharing options...
kahmann Posted May 4, 2009 Author Report Share Posted May 4, 2009 BUMP Anyone installed these? Any dyno #'s? These are the biggest rails I have found thus far http://dagostinoracing.com/index.php?main_...8b7a6faf085aae7 Ken Link to comment Share on other sites More sharing options...
SWEDEMAN Posted May 5, 2009 Report Share Posted May 5, 2009 Bump D' bump D' Bump! Link to comment Share on other sites More sharing options...
Stalwart Posted May 5, 2009 Report Share Posted May 5, 2009 Is the stock system too small? If stock rails are adequate to eliminate excessive pressure drop then there would be NO bennefit (except the look). If the stock system is too small, then you'd need a retune to cut injector duration to compensate for the better fuel delivery. Link to comment Share on other sites More sharing options...
kahmann Posted May 5, 2009 Author Report Share Posted May 5, 2009 Is the stock system too small? If stock rails are adequate to eliminate excessive pressure drop then there would be NO bennefit (except the look). If the stock system is too small, then you'd need a retune to cut injector duration to compensate for the better fuel delivery. Understood. That's the question I've posed for awhile now. What is the benefit? Obviously, if the stock rails are flowing max fuel to the injectors, then there is none. That's what no one seems to know. I've seen some guys that have upgraded just the rails, others that have upgraded just the injectors, and others that have swapped out the entire fuel system. But none of these guys (primarily at shows) have been able to answer the basic question of why they did it and what benefits they've realized from it. Before investing any time/money into this, I want to know what the benefits are, which rails to go with and why. Ken Link to comment Share on other sites More sharing options...
blkGT500nCA Posted May 5, 2009 Report Share Posted May 5, 2009 I would think the stock fuel rails would be more than enough for a supercharged 4.6 with stock rotating assembly. Now start cranking up the boost with forged internals and they might be necessary. They do look good though. Link to comment Share on other sites More sharing options...
MMcGuirk Posted May 5, 2009 Report Share Posted May 5, 2009 Ken I installed the MMR billet rails. There was definitely improvements from a driveability standpoint. I had read that under full boost, there is a fuel pressure issue with the right side due to the tiny fuel crossover line. Dyno before - 480 rwhp / 469 rwtrq Dyno after - 511 rwhp / 503 rwtrq (I also added KR muffs, Steeda idler pulleys and McLeod twin disk clutch) Michael Link to comment Share on other sites More sharing options...
kahmann Posted May 5, 2009 Author Report Share Posted May 5, 2009 Ken I installed the MMR billet rails. There was definitely improvements from a driveability standpoint. I had read that under full boost, there is a fuel pressure issue with the right side due to the tiny fuel crossover line. Dyno before - 480 rwhp / 469 rwtrq Dyno after - 511 rwhp / 503 rwtrq (I also added KR muffs, Steeda idler pulleys and McLeod twin disk clutch) Michael Perfect, exactly what I was looking for! Thanks a lot Michael Ken Link to comment Share on other sites More sharing options...
kahmann Posted June 12, 2009 Author Report Share Posted June 12, 2009 Well I finally decided to buy some rails. I went with these BBK blue anodized rails. I purchased them from Sacramento Mustang. Apparently, it includes all fittings and hardware necessary for a plug and play install. I'll post an install guide whenever they show up (hopefully Monday). At some point before I add the Paxton, I'll install 60 lb injectors also. Does anyone have a good source on injectors? Brand? Thanks for any further info. Ken Link to comment Share on other sites More sharing options...
uno Posted June 13, 2009 Report Share Posted June 13, 2009 don't new injectors and pumps come with the Novi kit? or are you planning on building it piece by piece to your liking? Link to comment Share on other sites More sharing options...
kahmann Posted June 13, 2009 Author Report Share Posted June 13, 2009 don't new injectors and pumps come with the Novi kit? or are you planning on building it piece by piece to your liking? I'll use the pump with the Novi kit, but I've heard that the injectors with the kit won't support the power I'll be making. Ken Link to comment Share on other sites More sharing options...
GT500-07 Posted June 13, 2009 Report Share Posted June 13, 2009 how much power do you think your going to get from the Novi? we just pulled 579.4rwhp on 39lb injectors and stock fuel rails, we maxed out on the injectors. monday we will install 80lb injectors, FR TB and the FR 123mm MAF. Link to comment Share on other sites More sharing options...
SGT2666 Posted June 13, 2009 Report Share Posted June 13, 2009 Unless you are making significantly more HP then most of us fuel rails are purely cosmetic. Link to comment Share on other sites More sharing options...
kahmann Posted June 13, 2009 Author Report Share Posted June 13, 2009 how much power do you think your going to get from the Novi? we just pulled 579.4rwhp on 39lb injectors and stock fuel rails, we maxed out on the injectors. monday we will install 80lb injectors, FR TB and the FR 123mm MAF. With 8-9 lbs of boost, I'll be making over 650HP at the crank, according to the online boost calculators. Unless you are making significantly more HP then most of us fuel rails are purely cosmetic. I'm at 425 crank HP now and planning on adding a Paxton Novi in the short term future. I'm trying to upgrade every component of my fuel system before the Paxton arrives. The #1 source of problems with boost on the 3V that I've heard and read about have been related to fuel starvation, running too lean, detonation to the point of destruction, etc. I'm simply trying to cover all of my bases before I slam a whole ton of power to my 3V. Ken Link to comment Share on other sites More sharing options...
GT500-07 Posted June 13, 2009 Report Share Posted June 13, 2009 With 8-9 lbs of boost, I'll be making over 650HP at the crank, according to the online boost calculators. I'm at 425 crank HP now and planning on adding a Paxton Novi in the short term future. I'm trying to upgrade every component of my fuel system before the Paxton arrives. The #1 source of problems with boost on the 3V that I've heard and read about have been related to fuel starvation, running too lean, detonation to the point of destruction, etc. I'm simply trying to cover all of my bases before I slam a whole ton of power to my 3V. Ken are you running stock fuel pump? Link to comment Share on other sites More sharing options...
kahmann Posted June 13, 2009 Author Report Share Posted June 13, 2009 are you running stock fuel pump? I am right now yes. I was planning on using Paxton's pump, but I think I'll buy this setup from Lethal instead: http://www.lethalperformance.com/05-09-mus...ade-kit-p-28508 Ken Link to comment Share on other sites More sharing options...
Chill Posted June 13, 2009 Report Share Posted June 13, 2009 Rock on Ken!! Link to comment Share on other sites More sharing options...
GT500-07 Posted June 13, 2009 Report Share Posted June 13, 2009 we're running the GT500 set up http://www.lethalperformance.com/05-09-mus...-system-p-13418 Link to comment Share on other sites More sharing options...
kahmann Posted June 13, 2009 Author Report Share Posted June 13, 2009 we're running the GT500 set uphttp://www.lethalperformance.com/05-09-mus...-system-p-13418 What's the difference? It's the same price and it looks like the same pump? Or no? Link to comment Share on other sites More sharing options...
blueone Posted June 14, 2009 Report Share Posted June 14, 2009 Well I finally decided to buy some rails. I went with these BBK blue anodized rails. I purchased them from Sacramento Mustang. Apparently, it includes all fittings and hardware necessary for a plug and play install. I'll post an install guide whenever they show up (hopefully Monday). At some point before I add the Paxton, I'll install 60 lb injectors also. Does anyone have a good source on injectors? Brand? Thanks for any further info. Ken I'm going with the Metco kit. http://www.metcomotorsports.com/proddetail.asp?prod=MFR2005P Link to comment Share on other sites More sharing options...
GT500-07 Posted June 14, 2009 Report Share Posted June 14, 2009 What's the difference? It's the same price and it looks like the same pump? Or no? FR vs Fore? Link to comment Share on other sites More sharing options...
SGT2666 Posted June 14, 2009 Report Share Posted June 14, 2009 I bought a set of used GT500's they are around and reasonable. I'm running 80# injectors so they don't have to run such a harsh duty cycle, most are running the injectors out of spec... Link to comment Share on other sites More sharing options...
kahmann Posted June 14, 2009 Author Report Share Posted June 14, 2009 I'm going with the Metco kit. http://www.metcomotorsports.com/proddetail.asp?prod=MFR2005P Those are the biggest rails I found and they look really nice. I went with the BBK for the price/look and I figured 5/8" ID compared to 11/16" wasn't a huge deal for me. Did you install yours yet? Pics? Ken Link to comment Share on other sites More sharing options...
blueone Posted June 14, 2009 Report Share Posted June 14, 2009 Those are the biggest rails I found and they look really nice. I went with the BBK for the price/look and I figured 5/8" ID compared to 11/16" wasn't a huge deal for me. Did you install yours yet? Pics? Ken Just got it ordered yesterday along with the adapter and the fuel block,might wait and have them installed with my new shortblock. Metco is pricey but everthing I have gotten from them has been top notch. Jeff Link to comment Share on other sites More sharing options...
kahmann Posted June 15, 2009 Author Report Share Posted June 15, 2009 Just got it ordered yesterday along with the adapter and the fuel block,might wait and have them installed with my new shortblock. Metco is pricey but everthing I have gotten from them has been top notch. Jeff Very cool, I'm sure you'll like them. Get some pics up after the install! Ken Link to comment Share on other sites More sharing options...
kahmann Posted June 17, 2009 Author Report Share Posted June 17, 2009 I got the BBK rails installed today. Nothing seals properly. The o-rings included in the kit are too big. The machined holes for the pressure sender mount are messed up. They sure do look pretty, but these are going back to Sac Mustang for a refund asap. Looks like the Metco kit is in my near future. Ken Link to comment Share on other sites More sharing options...
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