Need Bigger Injectors
Thread Starter
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Grand Champion
Joined: Apr 2009
Posts: 5,293
Likes: 3
From: Kekaha, HI
Need Bigger Injectors
Well I've been tunning the new 224 cams and I've maxed out the SVT #39 injectors. I've either got to start using the boost limiter now or switch over to the SRT4 60lb injectors Richie is using. My fuel maps are currently maxed and I'm only running the 3.25" pulley and making over 14 psi boost at 6k rpms. These new 224 cams work great with the 3.55s.
I will either switch to the older 04891574AB
Or the new model 04891574AD
The truck is pulling like it did when I was running the 206 cams with 4.10 gears. I've just got to get the tune dialed in.
I will either switch to the older 04891574AB
Or the new model 04891574AD
The truck is pulling like it did when I was running the 206 cams with 4.10 gears. I've just got to get the tune dialed in.
King Jackass
Joined: Jan 2008
Posts: 1,610
Likes: 5
From: Aurora, CO
Blown, what are your injector duty cycles at WOT across the rpm range?
On the race car, @ 17psi (VERY CONSERVATIVE) I see around 77% IDC's on E85 with 1000cc injectors. Once the new fuel system is in, I'm ditching the 1000's and going with 1600cc FIC BlueMax injectors. This will provide me with more than enough fuel for my target boost levels (35-37psi).
On the race car, @ 17psi (VERY CONSERVATIVE) I see around 77% IDC's on E85 with 1000cc injectors. Once the new fuel system is in, I'm ditching the 1000's and going with 1600cc FIC BlueMax injectors. This will provide me with more than enough fuel for my target boost levels (35-37psi).
Thread Starter
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Grand Champion
Joined: Apr 2009
Posts: 5,293
Likes: 3
From: Kekaha, HI
Sorry man but I had to stop tuning until I ge the new injecors. When I say I'm running lean, I mean stupid lean. I shrug just saying this but at WOT I jump form a 12.1 A/F at 5k to 14.0 A/F at 6k. I backed out of it immediately aand it was lean enough to alarm my knock sensors. I sent the data logs to Hemifever at which point I leanred I have maxed out my #39 Injectors.
Thanks Eric, I've began searching. Even with a boost limiter I don't want to take the chance of running that lean again. I've been fortunate because I always play it safe. I didn't expect to see that much boost/power off these cams with the 3.25" pulley.
Donkey, I have that saved in a file somewhere I will see if I can find it.
Thanks Eric, I've began searching. Even with a boost limiter I don't want to take the chance of running that lean again. I've been fortunate because I always play it safe. I didn't expect to see that much boost/power off these cams with the 3.25" pulley.
Donkey, I have that saved in a file somewhere I will see if I can find it.
King Jackass
Joined: Jan 2008
Posts: 1,610
Likes: 5
From: Aurora, CO
Sorry man but I had to stop tuning until I ge the new injecors. When I say I'm running lean, I mean stupid lean. I shrug just saying this but at WOT I jump form a 12.1 A/F at 5k to 14.0 A/F at 6k. I backed out of it immediately aand it was lean enough to alarm my knock sensors. I sent the data logs to Hemifever at which point I leanred I have maxed out my #39 Injectors.
Thanks Eric, I've began searching. Even with a boost limiter I don't want to take the chance of running that lean again. I've been fortunate because I always play it safe. I didn't expect to see that much boost/power off these cams with the 3.25" pulley.
Donkey, I have that saved in a file somewhere I will see if I can find it.
Thanks Eric, I've began searching. Even with a boost limiter I don't want to take the chance of running that lean again. I've been fortunate because I always play it safe. I didn't expect to see that much boost/power off these cams with the 3.25" pulley.
Donkey, I have that saved in a file somewhere I will see if I can find it.
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so....gonna sell those injectors??? those are the 4.6 L injectors everyone's talking about??? lol
Thread Starter
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Grand Champion
Joined: Apr 2009
Posts: 5,293
Likes: 3
From: Kekaha, HI
Even with the 3.25" pulley I'm running lean. I will have to see if I can find one of my old Paxton blower belts and try the 3.5" pulley.
Sorry man, Ruger beat you to them.
King Jackass
Joined: Jan 2008
Posts: 1,610
Likes: 5
From: Aurora, CO
How about the injector duty cycles through the rpm range?