Last Real Texan
05-30-2008, 01:41 PM
Well last night I finally got close finishing up the head project that I started a while ago. All that is left to do is drop the distributer and run the plug wires, than fire it up and start the tuning process.
I have a really good baseline tune that Mark Boos sent me and it should be close and with the information I can gather from my wideband O2 and Diacom software I will be able to log and record all of the info needed to get the tune just right. The bigger injectors were a pain in the arse tro install and the replumbing of the fuel rail was a chore to say the least but now I am not dead heading the fuel to the rail, it now has a eturn out of it and then to the reg after it to maintain more equall pressure. I was also able to run -8 line from the tank to the rail ...I did have to upgreade the fuel filter head to -8 lines , used an old oil filter relocation head to do this...should be the same as a fuel filter head I hope, using a high flow Balwin fuel water seperator on it. I am also returning the fuel through a fuel cooler and then back to the tank, should work well:crossfing: I have 3 pulleys to test with to get the desired 7-8 lbs of boost I want, a 4.0 , a 3.85 and a 3.65 .....lots of tuning and testing ahead. The raise ports on the Brodix heads was a tight fit with my existing exhaust hole but it fits ...just barely. I have also decided to upgrade the ignition as well and go to a full MSD system, now I know the boxes have been know to give trouble but on the upper side of 750 HP i want to have a good solid spark and down low I want it to idle cleanly and with out loading up. I also have a harness that connects between the MSD and the coil and distributer so if the box craps out I can bypass it and just run the standard ignition. All in all it should be a good solid set up spending the bulk of its time below 4000 RPMS crusing in the low 60's and when I want to run smartly up into the 80's ( hopefully knocking on 90 ) most likely the high 80's to be realistic....I will keep you all POsted...
Bryan
I have a really good baseline tune that Mark Boos sent me and it should be close and with the information I can gather from my wideband O2 and Diacom software I will be able to log and record all of the info needed to get the tune just right. The bigger injectors were a pain in the arse tro install and the replumbing of the fuel rail was a chore to say the least but now I am not dead heading the fuel to the rail, it now has a eturn out of it and then to the reg after it to maintain more equall pressure. I was also able to run -8 line from the tank to the rail ...I did have to upgreade the fuel filter head to -8 lines , used an old oil filter relocation head to do this...should be the same as a fuel filter head I hope, using a high flow Balwin fuel water seperator on it. I am also returning the fuel through a fuel cooler and then back to the tank, should work well:crossfing: I have 3 pulleys to test with to get the desired 7-8 lbs of boost I want, a 4.0 , a 3.85 and a 3.65 .....lots of tuning and testing ahead. The raise ports on the Brodix heads was a tight fit with my existing exhaust hole but it fits ...just barely. I have also decided to upgrade the ignition as well and go to a full MSD system, now I know the boxes have been know to give trouble but on the upper side of 750 HP i want to have a good solid spark and down low I want it to idle cleanly and with out loading up. I also have a harness that connects between the MSD and the coil and distributer so if the box craps out I can bypass it and just run the standard ignition. All in all it should be a good solid set up spending the bulk of its time below 4000 RPMS crusing in the low 60's and when I want to run smartly up into the 80's ( hopefully knocking on 90 ) most likely the high 80's to be realistic....I will keep you all POsted...
Bryan