razorlab's simple build(s)
Aug 4, 2018, 09:40 AM
#1126
Bryan,
I was looking back at your FPR problems. Are you running the OEM fuel rail, OEM FPR, and OEM 1/4" return line ? I am going to be upgrading my fuel pump from a Walbro 255 to something bigger for E85 and I don't want my fuel pressure going sky high. I have the radium hanger same as you, so that does remove some restriction at the end of the return line. If I remember right you had a progressive controller with a Walbro 450 and kept the OEM fuel rail,fpr, and 1/4" return line. But then you ripped out the progressive controller when you had fuel pressure problems. Did you upgrade the FPR and return line and run the 450 100% power all the time?
I was looking back at your FPR problems. Are you running the OEM fuel rail, OEM FPR, and OEM 1/4" return line ? I am going to be upgrading my fuel pump from a Walbro 255 to something bigger for E85 and I don't want my fuel pressure going sky high. I have the radium hanger same as you, so that does remove some restriction at the end of the return line. If I remember right you had a progressive controller with a Walbro 450 and kept the OEM fuel rail,fpr, and 1/4" return line. But then you ripped out the progressive controller when you had fuel pressure problems. Did you upgrade the FPR and return line and run the 450 100% power all the time?
I'd highly recommend something other than a crappy DW product. Use aeromotive or asnu.
I ran a easy performance pump controller but the QC is crap and I fried one. I upgraded to a torqbyte programmable controller and it's been rock solid ever since.
Aug 4, 2018, 10:31 AM
#1127
EvoM Guru
iTrader: (1)
What's the current status of the car Bryan?
Aug 4, 2018, 12:42 PM
#1128
Evolved Member
You'll be fine because you have the radium venturi. I am running OEM rail, frp and feed/return lines.
I'd highly recommend something other than a crappy DW product. Use aeromotive or asnu.
I ran a easy performance pump controller but the QC is crap and I fried one. I upgraded to a torqbyte programmable controller and it's been rock solid ever since.
I'd highly recommend something other than a crappy DW product. Use aeromotive or asnu.
I ran a easy performance pump controller but the QC is crap and I fried one. I upgraded to a torqbyte programmable controller and it's been rock solid ever since.
Aug 4, 2018, 04:29 PM
#1129
Been sitting in the garage collecting dust. Was waiting for my guy to come back from vacation. Dropping it off at his shop this Wednesday.
So, you are going to run an external pump to feed the motor from the surge tank and use a 255 in the oem tank to feed the surge tank?
I'd either use a switch to have the external pump switch to 100% at WOT or run a controller or if you want to run it at 100% all the time, you will most likely need an adjustable FPR.
So what do you recommend for an EXTERNAL pump that exceeds 255lph and is E85 safe? The surge tank I am building has the pump external. And the follow up question is can I run it at full 100% power all the time since I have the upgraded radium venturi (stock return line, and FPR) ? I really don't want drop coin on that full controller if I can avoid it. Perhaps I can design a 9v/12v switch over circuit that copies the factory in tank lift pump (walbro 255). That also makes me nervous since your essentially playing/experimenting with your entire engine at that point.....
I'd either use a switch to have the external pump switch to 100% at WOT or run a controller or if you want to run it at 100% all the time, you will most likely need an adjustable FPR.
Aug 4, 2018, 06:28 PM
#1130
Evolved Member
Been sitting in the garage collecting dust. Was waiting for my guy to come back from vacation. Dropping it off at his shop this Wednesday.
So, you are going to run an external pump to feed the motor from the surge tank and use a 255 in the oem tank to feed the surge tank?
I'd either use a switch to have the external pump switch to 100% at WOT or run a controller or if you want to run it at 100% all the time, you will most likely need an adjustable FPR.
So, you are going to run an external pump to feed the motor from the surge tank and use a 255 in the oem tank to feed the surge tank?
I'd either use a switch to have the external pump switch to 100% at WOT or run a controller or if you want to run it at 100% all the time, you will most likely need an adjustable FPR.
Yes that;s correct. 255 in oem tank in radium hanger (with upgraded venturi) with oem wiring and thus 9v/12v switching feeding the surge tank. The problem now is finding an external pump to pull from the surge tank and feed the rail. I was looking at deatschwerks but it sounds like they have issues? I don't like the idea of 100% power all the time, and upgrading the FPR. However, the controller path isn't exactly cheap. I am going to have to do some brainstorming on a reliable switching method. Just finding a way to create a high current 9v power source isn't easy! I've been looking and haven't found DC/DC power supply that has any good amount of current.
Aug 4, 2018, 07:06 PM
#1131
EvoM Guru
iTrader: (1)
Hardware the factory tank pump. Use factory wiring to power external pump, and use a Hobbs switch to give it power straight from the batter at WOT.
Look up mrfred's hi/lo voltage rewire thread for the 8/9.
Look up mrfred's hi/lo voltage rewire thread for the 8/9.
Aug 4, 2018, 07:57 PM
#1132
EvoM Community Team Leader
You don't need a power supply, you can just copy what the OEM does and use resistors to drop the voltage. If you are looking for high power adjustable supplies though I have been toying with the idea of experimenting with one of these
. That little guy has full digital speed control and some pretty good specs
- Input voltage: 6-28V
- Continuous current: 60A*
- Peak current (2 sec): 100A
Aug 5, 2018, 11:36 AM
#1133
Evolved Member
I hope the car gets back running. ^^^ This is the horror story of the year regarding check *****.
?? .......or it melted.
junk...
Aug 8, 2018, 03:20 PM
#1134
Dropped the Evo off at the shop today.
He started with a leak down test of cyl #3. It's basically perfect at 2% or so. Compression as I stated before is also perfect at 178.
So now I am crossing fingers for a valve seal so head doesn't have to come off, if it's a valve guide the head has to come off I believe.
He started with a leak down test of cyl #3. It's basically perfect at 2% or so. Compression as I stated before is also perfect at 178.
So now I am crossing fingers for a valve seal so head doesn't have to come off, if it's a valve guide the head has to come off I believe.
Aug 8, 2018, 10:13 PM
#1136
He did a leak down on the rest of the cylinders, all of them are basically 2% like #3. So cylinders are solid. Which makes me feel much better.
He scoped #3 intake valves and they are wet with oil. Next is taking valve cover off and going in for valve seal surgery.
He scoped #3 intake valves and they are wet with oil. Next is taking valve cover off and going in for valve seal surgery.
Aug 8, 2018, 11:53 PM
#1137
EvoM Guru
iTrader: (1)
Good bet it's just a valve seal. Takes a lot to wipe out a guide.
Aug 17, 2018, 07:33 AM
#1140
previously on these heads?
I know the frustration with modified high output engines and performance cars. Seems like they are "Hell when they are well "... but I found too many "issues" kept popping up and disappointments. Added cost to maintain and build. Been without a performance vehicle for 7 years now. Boring but the drama and grief /cost is gone for the few thrills provided.