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Author
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Topic: are 42,s big enough
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Duncan Motors
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Member # 7045
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posted
 
 
42 pound injectors big enough for a 351 , 10 to 12 pounds of boost?
Posts: 6310 | From: Vallejo | Registered: Sep 2006
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racsirx
CAFords OG
Member # 1710
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posted
Depends if you want to max out the duty cycle with 42s, they now say 420rwhp is the limit for 42s, I have done 566rwhp with 42s
http://mustangpartstech.com/FuelInjectorMath.html
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88 Saleen #564
88 GT 331 NOVI2000
88 Coupe TURBO 9.75@142
95 Cobra R #75-SOLD
06 F250
13 BMW AH3
17 GT350 #5556
GOD'S NOT DEAD
Posts: 20750 | From: Concord & Pittsburg, CA | Registered: Aug 2002
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Duncan Motors
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Member # 7045
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posted
thank u again lee. that was gd read by the way.
Posts: 6310 | From: Vallejo | Registered: Sep 2006
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SLOWSN95
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Member # 8269
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posted
Jon, run 60s. Seen way too many HCI s-trim setups get cut short because the duty cycles were maxed with 42s. As for a 351w, You should expect the same thing. Better to be safe then sorry.
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94' GT
347 Stroker
MM Suspended
2003 SB SVT Lightning
Pullied and Lowered
89'Hatch-SOLD
Posts: 2214 | From: 510/east bay | Registered: Mar 2008
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Duncan Motors
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Member # 7045
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posted
thanks man , im looking to buy som enow, if u know where a gd set is shoot me in that direction. thanks again guys, im being stubborn but im getting over it lol.
Posts: 6310 | From: Vallejo | Registered: Sep 2006
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trickflow211
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Member # 8503
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posted
get the 47s like me, they good over 650 hp
Posts: 2449 | From: Pittsburg/Sacramento | Registered: Jul 2008
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Saleen 00-768
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Member # 9379
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posted
quote:
Originally posted by trickflow211:
get the 47s like me, they good over 650 hp
+1 on the ford racing 47pounders
![[patriot]](graemlins/patriot.gif)
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'00 Saleen SC #768
'90 GT
'90 California Edition (sold)
'87 Saleen #264 (sold)
Posts: 1664 | From: NOR✯CAL | Registered: Aug 2009
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moeofit32
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Member # 10393
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posted
I used 50s by msd cause I had the issue with 42s....problem gone
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95 stroked and blown cobra
Posts: 2387 | From: antioch ca | Registered: Oct 2010
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East Bay 50
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Member # 8081
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posted
quote:
Originally posted by Duncan Motors:
42 pound injectors big enough for a 351 , 10 to 12 pounds of boost?
nope
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Kurgan tuned stroked and blown 347 foxbody. boost nukka!
Posts: 2699 | Registered: Dec 2007
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racsirx
CAFords OG
Member # 1710
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posted
Lol, times have changed but for the better, 30lb and 36lb injectors were used for HCI and S-trim setups back in the day, even a Saleen S351 with a S-trim came with 42lb injectors. I don't see a point in getting bigger than 50lb injectors if you don't upgrade the fuel lines.
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88 Saleen #564
88 GT 331 NOVI2000
88 Coupe TURBO 9.75@142
95 Cobra R #75-SOLD
06 F250
13 BMW AH3
17 GT350 #5556
GOD'S NOT DEAD
Posts: 20750 | From: Concord & Pittsburg, CA | Registered: Aug 2002
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Duncan Motors
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Member # 7045
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posted
i remember that as well lee, but every tuner i talk to gets unhappy, i want a happy tuner thats feels gd about doing his job instead of bein a sour puss pushing me out th edoor. my fuel lines are upgraded, but only have one 255 in tank pump, and the vortech inline 255 pump as well, im hearing those only can support the 42,s as well, and then told they will be peaked on 50,s. im thinking 50,s would be ok then?
Posts: 6310 | From: Vallejo | Registered: Sep 2006
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Duncan Motors
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Member # 7045
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posted
and thanks for lending your help again by the way lee and everybody else as well.
Posts: 6310 | From: Vallejo | Registered: Sep 2006
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racsirx
CAFords OG
Member # 1710
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posted
quote:
Originally posted by Duncan Motors:
i remember that as well lee, but every tuner i talk to gets unhappy, i want a happy tuner thats feels gd about doing his job instead of bein a sour puss pushing me out th edoor. my fuel lines are upgraded, but only have one 255 in tank pump, and the vortech inline 255 pump as well, im hearing those only can support the 42,s as well, and then told they will be peaked on 50,s. im thinking 50,s would be ok then?
I believe a T-Rex pump is rated less than 255, that's why I used an universal 255 inline
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88 Saleen #564
88 GT 331 NOVI2000
88 Coupe TURBO 9.75@142
95 Cobra R #75-SOLD
06 F250
13 BMW AH3
17 GT350 #5556
GOD'S NOT DEAD
Posts: 20750 | From: Concord & Pittsburg, CA | Registered: Aug 2002
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