Getting rid of t78 for ?????
08-26-08, 08:26 AM
#1
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Getting rid of t78 for ?????
Well I have to say after drifting a few times on the t78 I must say it is not going to work.
I bought the car with this turbo on it already, but its time to change turbos and get the response and powerband i want. I am tuned right now to 420 at 17psi, but the turbo doesnt wake up til about 5k.
Specs on motor:
13b rew
New rear housing
Balanced rotors
3mm seals
oil mods
cooling mods
Jacobs ignition
Mocal dual oil coolers
Greddy FMIC and pipind
Streetport
Exhaust ports matched
Apexi PFC
I am leaning towards a TO4, but dont know which one to get. Any input would be greatly appreciated. I am looking for better response and faster spool. I also want it to be 400hp capable.
I bought the car with this turbo on it already, but its time to change turbos and get the response and powerband i want. I am tuned right now to 420 at 17psi, but the turbo doesnt wake up til about 5k. Specs on motor:
13b rew
New rear housing
Balanced rotors
3mm seals
oil mods
cooling mods
Jacobs ignition
Mocal dual oil coolers
Greddy FMIC and pipind
Streetport
Exhaust ports matched
Apexi PFC
I am leaning towards a TO4, but dont know which one to get. Any input would be greatly appreciated. I am looking for better response and faster spool. I also want it to be 400hp capable.
08-26-08, 04:34 PM
#5
or you can do what i did.
get an electronic boost controller and a weaker wastegate spring. then max out the gain setting on the ebc. I have a .6bar spring. It spikes to about .9 then sits about .8. The ebc really helped my spool times and the weaker spring saves me from overboosting. its a cheaper idea then buying a new turbo
get an electronic boost controller and a weaker wastegate spring. then max out the gain setting on the ebc. I have a .6bar spring. It spikes to about .9 then sits about .8. The ebc really helped my spool times and the weaker spring saves me from overboosting. its a cheaper idea then buying a new turbo
08-27-08, 08:23 PM
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I have a greddy manifold. I already sold the t78 and plan on getting some type of TO4. There are some many TO4's out there to choose from. I guess I'm going to have to look at the turbo maps and decide which turbo would be best for me. I want to have a really good spooling TO4 and make it work thru the full RPMS.
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08-30-08, 08:28 AM
#15
Rotor or no motor
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5k for the t-78 to wake up.. i doubt that
my t-78 kicks in at around 3.7 k
If i was gonna change the t-78 i would go for the gt42R which is even slower but once it kicks in its freaky
but if you are looking for quick response go for the rx6
my t-78 kicks in at around 3.7 k
If i was gonna change the t-78 i would go for the gt42R which is even slower but once it kicks in its freaky
but if you are looking for quick response go for the rx6
09-24-08, 02:37 PM
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Well a lot of factors play in response and spool up of the turbbo. I have a Greddy FMIC with all its piping. I plan to run a vmount set up this winter and a smaller turbo to help me on low end power. I'm leaning right now towards picking up the T04s. Does anyone have a dyno sheet or any info on a streetported engine with this turbo?
09-24-08, 08:55 PM
#18
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09-25-08, 11:39 AM
#20
here's what you do.
get a borg warner s300 series turbo. they're available from bullseye or direct from air werks.
i get full boost at 3500 and it pulls to 8500.
don't be sold on ball bearing bs.. if the compressor and exhaust wheels are sized properly a journal bearing turbo will spool just as fast, and have less likeliness to fail.
get a borg warner s300 series turbo. they're available from bullseye or direct from air werks.
i get full boost at 3500 and it pulls to 8500.
don't be sold on ball bearing bs.. if the compressor and exhaust wheels are sized properly a journal bearing turbo will spool just as fast, and have less likeliness to fail.
09-27-08, 02:09 AM
#21
\\TRASHTALK//
HKS T04Z would be sick... why not spend the $2,500 to $3,000 for the best, right?
ive been jockin a HKS set up for about a year.... yeah thats gonna be my own Graduation present. AZ!
ive been jockin a HKS set up for about a year.... yeah thats gonna be my own Graduation present. AZ!
09-29-08, 01:12 PM
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