Changes to my setup this year / trailer for Zombie rear mount turbo saga part 2
#1
Changes to my setup this year / trailer for Zombie rear mount turbo saga part 2
So 1320 has been kind enough to free up some lift time for my car. We are trying out some new things this year with it. The biggest change is going to be the inter cooler piping. It's going from 2.25/2.5" to 3" the entire length of the car. The inter cooler itself is also begin swapped out from a 3" ebay core to a 4" ebay core. The exhaust piping is changing from header wrapped 2.5" to 3.0" ceramic coated and wrapped the entire length.
The reason for the change is I suspect once of the sides is holding me back. I suspect it's the cold side due to the small diameter and 400+ ft/s air velocity it's seeing. Figured we'd change the exhaust while at it too to eliminate it as a possible restriction. The combination of coating and wrapping should hold more heat than the old setup. I'm also going to be adding a turbo blanket.
The reason I think piping is holding me back is I have hit the wall with how much power I can make. I can't get the car to trap any faster than 136 mph no matter how much boost I put to it. It seems to run the best on 15psi which gets me 135mph traps.
A return style boost referenced fuel system is also planned.
The Zombie rear mount turbo saga part II will hopefully be posted in a 2-3 months after I have some time to collect data.
The reason for the change is I suspect once of the sides is holding me back. I suspect it's the cold side due to the small diameter and 400+ ft/s air velocity it's seeing. Figured we'd change the exhaust while at it too to eliminate it as a possible restriction. The combination of coating and wrapping should hold more heat than the old setup. I'm also going to be adding a turbo blanket.
The reason I think piping is holding me back is I have hit the wall with how much power I can make. I can't get the car to trap any faster than 136 mph no matter how much boost I put to it. It seems to run the best on 15psi which gets me 135mph traps.
A return style boost referenced fuel system is also planned.
The Zombie rear mount turbo saga part II will hopefully be posted in a 2-3 months after I have some time to collect data.
#4
Then I cant see any reason not to enlarge the hot side. By 700+ rwhp hp you are moving a good bit of exhaust thru 10+ feet of restrictive 2.5" exhaust. That's gotta backing up. Probably alot more than the cold side as pressure is pressure. Unless you are seeing a considerable pressure drop from the turbo outlet to the map in the intake. Easy to determine.
#5
There is pressure and flow to consider. Figured it's best to do both. Upping the exhaust to 3" isn't a bad idea since I'm running E85 and making even more exhaust than a gas car.
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#11
#12
Heck, his is probably the easiest plumbed turbo kit on here that performs well. No cluttered engine bay, no crazy underhood temps, and it performs great. What's there to critique?
#16
This rear mount saga has most likely turned into a personal competition with himself(Zombie). The curiosity an R&D of the whole concept is why he's doing this, if I had to guess. If he wanted to run 7's, he'd build a tube chassis car with a big 'ole honkin turbo on the front. HIS FOCUS IS MAKING A STREET CAR WITH A REAR MOUNT FAST, all the while doing this "above the clouds" in Vegas. Keep up the info Zombie.
#17
Zombie are you running a 3" midepipe right now? I have a convertible so I had problem tucking up the intake tubing I went with oval tubing just a suggestion if you have problems finding room for the bigger tubes.
#19
I just think for the money you are spending on all of the metal and IC, you could fab a front mount set-up and yeild better reults in the end. I've never seen the SX80 in person so maybe it would be a bitch to fit up front.....not sure.
I know you are concerned about streetability, but are you still opposed to changing gear? That would yeild instant results far greater than pipe size. Maybe try a 3.25. Still low RPMS on the highway, and you will get to use the 1:1 ratio of high gear......putting ALL the power to the ground that your car is making.
#20
On IAT's at the track I'll typically see 100 at the starting line after a burn out and 140 at the end of a pass. In the summer when it's 100 ambient I can see a 50+ degree rise in IAT on a pass.