Awww man I was hoping to see an HR near the top of that top 25 TT drag list this year

 

we'll see in the spring when the r888s go on with the stock axles lol, might be hitting u up then if u still got em hahah

 

radials do more damage than just putting decent bias ply drag tires on.

 

i would be more concerned why your boost controller is holding 1 wastegate but not the other.

what are the springs used? I was easily getting 24lbs on an 8lb spring with a single boost solenoid. Might look for a leak in the reference lines.

 

We checked all the line they're all solid and no leaks there. Figured try the spring and go from there. Current ones are just 8 lb springs in there swapping them out for 20s

 

that's a hell of a jump. what pressure are you planning on running? I would make sure you give yourself some head room on that boost controller. They don't like extremely low or extremely high duty cycle so running 24lbs on a 20lbs spring wouldn't operate the best due to the very low duty cycle.

I know every car and setup is different but i'm running mid 30% duty cycle with 16lb springs set to 24psi on a boost controller.

 

we were having to run 90% duty cycle to keep them closed with the 8 lb springs, and what ever the turbos will flow to is what id like to run :P they were peaking at 23 lbs but that was with the spring creeping open. so im hoping maybe 25 or 26? we'll see once i get them in i guess

 

the strange part about that is you are having a hard time at high rpm holding boost on them. When i log closed loop boost control the duty cycle always drops off (lower) as the rpms go up. It requires less duty cycle to hold the spring at higher rpm because of the amount of gas going through the turbine housing and not out the wastegate. At least it's always been like that on any of the cars i've seen with closed loop duty cycle. The controller has to use less duty cycle in the higher rpm ranges.

Sucks you have to run such high springs though. I'm trying to keep my spring as light as possible so i can run my boost by speed and setup my own user defined boost by traction.

 

yea not sure why its doing that it is very odd, it spools so fast regardless of spring size i dont think it would get traction so im not to worried about it

 

Great build! Took about 2hrs to read Haha can't wait to see some vid's and track times. Been waiting to hear from Sam about my kit but hopefully one day I can be where you guys are. Congrats

 

lol lol lol it starts again

 

have a vid from this past weekend i can pm you, its only at 10 psi though i blew a coupler off on the way to the premeet before recording.

 

post it up!

 

cant the content is against forum rules :P

 

 

Maaaaaybe post up a non descript YouTube link?

 

any1 can feel free to pm for the link

 

Alright Wiseguy pm me the link lol

 

update

new springs in car made 28 psi on the gt2871's! also that same run it expanded and cut the coupler on the passenger side pipe going in to the bottom of the IC thus causing a big boost leak.

tommorow were going to weld on a little more piping so we can run a smaller coupler so it doesnt expand as much and cut itself on the tclamp again. it was also spinning 5th gear that run so going to add some weight in the rear to try and help that

 

Daaaaymn