You should've been able to make around 425 RWHP with a 190lph pump. I don't think the pump was the reason for the blown head gasket.snipe656 said:I was making 371 rwhp with a 190 intank solely and ended up blowing a head gasket from it running lean. I swapped to Dart Sr heads from the E7 factory ones and was thinking about just putting a 255 intank in there but now pondering if I should get a inline to work with my 190 or a inline with the 255.
If this is the case then why are so many people out there/here running @ least 190 or 255lph inline pumps with 190 or 255lph intank pumps. Not trying to start something, just looking for a legit answer.A Walbro 255lph GSS340 hi-volume intank pump with a good power source will support 80lbs of fuel pressure and about 550rwhp-575rwhp.
That may be true, if you maxxed out the 42's - which can make more than 500 RWHP even on a blown motor - you would need something like a 205 lph minimum, however, at 377 RWHP, you are not even close to maxxing out those injectors - see what I mean?snipe656 said:That assumes the 190 is working perfectly, a 190 is not even "technically" enough for a car with stock rails and 42lb injectors in a boosted environment according to places like Pro-M(if they are even right, they say a 205 is needed)
But you still have the injector in a rail that was designed for no more than a 24lb injector. A 42 maxed or not, will still spray out a bit more every time it opens than a 19 or 24. Which will in turn drain the rails quicker so the pump needs to force flow into the rails and if you do not have a strong enough pump, you could feasibly end up running lean even at a hp rating much under your max hp abilities of the injectors. If that were to happen then the first place it would expose itself is on the drivers back side, which is 7 and 8.Cougar5.O said:That may be true, if you maxxed out the 42's - which can make more than 500 RWHP even on a blown motor - you would need something like a 205 lph minimum, however, at 377 RWHP, you are not even close to maxxing out those injectors - see what I mean?
Run a constant from the battery using a relay that is triggered from the factory pump signal. This is how I did my twin bosch pumps on my LX, it was easy to do since I already had a fuse block in the hatch for the stereo.MCLFLN said:Redsnk95,
What qualifies as a good power source?
I don't see the reasoning behind that. How can the pressure stay constant, yet there isn't flow?2stangs69-91 said:it isn't a pressure thing it is a volume thing. you can maintain the pressure but lose volume and starve the injectors.