The quest for power.
- Thread starter LaserSVT
- Start date
See I am one of those ass hats that wants the best of both worlds. I want a two ton luxury land yacht to be able to hang with a Z06 in a straight line and still start/idle/drive like a stock car when not pushing it.
I have my car tuned so it starts instantly, idles smooth and at stock RPM levels, dont hesitate when rolling on it, dont pop or backfire, dont have a hanging idle, no power surges, gets 20+ on the highway etc etc etc.
The problem with constant running fuel pumps is I believe they will cause a hanging idle when you come to a stop, cause issues holding cold idle and cause surging issues due to rollon being the system was designed to have the pump "start back up" after highway cruising then getting on it.
I also dont want to be replacing pumps all the time. Car is not just a toy. If it was then I would look past all that stuff. Car is also a grocery getter, ride giver and daily beater.
Its asking a lot but I think its dooable.
I have my car tuned so it starts instantly, idles smooth and at stock RPM levels, dont hesitate when rolling on it, dont pop or backfire, dont have a hanging idle, no power surges, gets 20+ on the highway etc etc etc.
The problem with constant running fuel pumps is I believe they will cause a hanging idle when you come to a stop, cause issues holding cold idle and cause surging issues due to rollon being the system was designed to have the pump "start back up" after highway cruising then getting on it.
I also dont want to be replacing pumps all the time. Car is not just a toy. If it was then I would look past all that stuff. Car is also a grocery getter, ride giver and daily beater.
Its asking a lot but I think its dooable.
97MarkJA
Dedicated LVC Member
You can get a modified FPDM for 2 pumps or a piggyback harness for a second FPDM.
lol ass hat checking in
I hang with z06's, full interior including a/c, hit the scales at 4200 pounds with me in it, stock 96-98 Cobra heads and cams, smooth running engine, 19mpg hwy, 500rwhp, high11's - low 12's right off the street. My car starts and drives like a normal Mark VIII if you pretend to drive it with a egg under your foot I have a single Ford GT fuel pump, and a Kenne Bell Boost a pump wired to run wide open all the time. Tuner says I am still safe on the fuel at 500 rwhp with my set up, and there is still power left of the table.
Not sure how much more power you want to make, but I can tell you first hand, 500 to the tires with a big stall converter and drag radials is about just right for the street. Any more power, and I think it will be spent burning rubber.
97MarkJA
Dedicated LVC Member
Aeromotive has a 40 amp drive module that runs on its own (without the computer control)
http://aeromotiveinc.com/products-page/accessories-electronics/16306-billet-fuel-pump-speed-controller/
Plenty of options.
http://aeromotiveinc.com/products-page/accessories-electronics/16306-billet-fuel-pump-speed-controller/
Plenty of options.
kustomizingkid
Dedicated LVC Member
There is no reason you would get a hanging idle if it is tuned properly.
I have decided! I will run a modded fuel hat with dual Focus pumps and a higher output pump driver.
Mike, do have aftermarket fuel lines or whats up there? I am shooting for about 50 more horses then yours but that may go up or down depending on how I like it.
Mike, you ever get that overheating issue resolved?
Mike, do have aftermarket fuel lines or whats up there? I am shooting for about 50 more horses then yours but that may go up or down depending on how I like it.
Mike, you ever get that overheating issue resolved?
I long for that day when the planets are aligned and I am cruising down an open highway and see a ZR1 mosey up next to me to pass and then he notices hes not passing. He then downshifts and gives it the full beans and is in shock as the huge old Lincoln next to him just stays at his side while the fat white guy driving wearing a crash helmat is licking the window.
chris2523
93 Mark VIII
No offence man but do some research before you pull the trigger to meet your 550 rwhp goal.
2.2KB at 16 psi won't make 550rwhp thru auto specially with that inlet design on B headed cars . To make around 16psi you're gonna have to run smallest available pulley 2.75, 6-rib with 2.75 pulley = belt slip
Good luck running 16 psi on non I/C system even with meth injection.These blowers run very hot , even being intercooled.
2.2KB at 16 psi won't make 550rwhp thru auto specially with that inlet design on B headed cars . To make around 16psi you're gonna have to run smallest available pulley 2.75, 6-rib with 2.75 pulley = belt slip
Good luck running 16 psi on non I/C system even with meth injection.These blowers run very hot , even being intercooled.
No offense but do some research to see what I was running before I stepped it down to 8psi. I am very familiear with roots/twin screws as I was in the CObra game for years.
The car was running 17.4psi with the 3" supercharger pulley on the stock crank pulley. Also the motor will be stroked and bored to a 4.8 plus it will be running slightly higher compression. Then adding on a progressive meth injection system with a 50/50 mix (may go to 90% meth) should allow for no problems with my goals.
Running 331rwhp on 7.4psi with 14* timing and a 180* IAT. Drop the IATs down a good 50*, bump compression 3/4 of a point, add another 6* of timing and 10 more lbs of boost on a slightly larger motor should allow me that 66% gain.
so what did you make at 17.4 psi power-wise.I don't get this so you had forged motor before and now you have a stock one or you were pushing 17.4 on a stock bottom end before ?
I'm still saying you won't make 550 rwhp with non I/C KB running methanol on pump gas.I hope you get this build done so we can find out.
I'm still saying you won't make 550 rwhp with non I/C KB running methanol on pump gas.I hope you get this build done so we can find out.
It was a mistake. Didnt know the Marks crank pulley is larger then Cobras crank pulleys. I thought it would have 7-9psi and wasnt untill the third dyno run that we noticed the boost. By that time it was too late, motor had a slight noise that got much worse latter. Cracked the keyway on the crank and the timing ring.
It made 394 rwhp and some rediculous TQ number. That was on 6 injectors and 5 good coils, two weak coils and one bad coil, blown TPS and 5* MAX timing allowed. :lol:
Was redone after I swapped motors, bought new coils, new TPS, cleaned out the clogged injectors and put an underdrive crank pulley on it. Car is tuned to be safe right now and has been tuned with 200*+ IATs in mind.
It made 394 rwhp and some rediculous TQ number. That was on 6 injectors and 5 good coils, two weak coils and one bad coil, blown TPS and 5* MAX timing allowed. :lol:
Was redone after I swapped motors, bought new coils, new TPS, cleaned out the clogged injectors and put an underdrive crank pulley on it. Car is tuned to be safe right now and has been tuned with 200*+ IATs in mind.
Oh yeah, also the car was driven for a month on the bad motor with new coils and TPS and fixed injectors untill the new pulley showed up. I did many WOT runs and never once did the belt slip (audibly anyway) at the 17.4lbs. Was just a regular old Gates belt too.