Tc78 with 1.15 ar vs pt88?
12-22-2010, 10:26 AM
#61
12-22-2010, 10:44 AM
#62
10 Second Club
Thread Starter
iTrader: (22)
Join Date: Mar 2006
Location: Northwest side of Chicago
Posts: 3,677
Likes: 0
Received 2 Likes
on
2 Posts
Yes they can even do a 4 inch but I don't know if I have room for that size dp. 3.5 I can fit. Will a larger dp help with spool time? if so that could help make up for the added lag with the larger housing.
12-22-2010, 11:36 AM
#64
I would step up to a 3.5" DP. The 4" is kinda a moot point on the TC series. It will help reduce Back pressure and will allow the turbo to utilize the Bigger A/R fo rmore power Up top.
12-22-2010, 12:05 PM
#65
TECH Enthusiast
Join Date: Jan 2004
Location: New Zealand
Posts: 608
Likes: 0
Received 0 Likes
on
0 Posts
2600lbs here and I went 154mph on 18lbs, that is a stock shortblock 5.3 and stock heads also. I'm putting that combo in a heavy 4 door car to make daily driver next year and will probably be switching to the 1.15 AR to see what it will make. It made 686rwhp this year thru the stalled auto, 9" and 33" tires. I'd like to see ~715rwhp on the new ride on 18lbs through the stalled auto and 8.8 with smaller tires if I can get the new housing.
What is the most anyone has put down with the TC78?
What is the most anyone has put down with the TC78?
12-22-2010, 07:03 PM
#66
Launching!
Join Date: Sep 2008
Posts: 273
Likes: 0
Received 0 Likes
on
0 Posts
Im very interested in the max potential on a tc78 (on a 5.7-6.0 liter engine) now as i have started my turbo build, with a tc78 that i had from a previous project with intentions of stepping up to a S380 or pt88; something with a much more efficient exhaust side...
but ive kinda built myself into using only the tc78, space wise. If i haddd to i could redo my turbo manifold and for the larger turbo, but now im kinda inetesreted in how far i can go with the tc78....
with street manners as a #1 priority, i wanted to go 9.999...
LQ4, either LS6 or custom grind cam, 4l80e, 3600ish stall, probably 3.23's(26" tire) in a 3500lb sonoma...
but ive kinda built myself into using only the tc78, space wise. If i haddd to i could redo my turbo manifold and for the larger turbo, but now im kinda inetesreted in how far i can go with the tc78....
with street manners as a #1 priority, i wanted to go 9.999...
LQ4, either LS6 or custom grind cam, 4l80e, 3600ish stall, probably 3.23's(26" tire) in a 3500lb sonoma...
12-22-2010, 07:04 PM
#67
Launching!
Join Date: Sep 2008
Posts: 273
Likes: 0
Received 0 Likes
on
0 Posts
i currently have the .96a/r on mine and IF i get "stuck" with using it id like to get the 1.15, but didnt really want it divided...
i know others have, but i hope i can make 650rwhp with this...
i know others have, but i hope i can make 650rwhp with this...
12-22-2010, 10:16 PM
#70
12-23-2010, 12:42 AM
#72
2600lbs here and I went 154mph on 18lbs, that is a stock shortblock 5.3 and stock heads also. I'm putting that combo in a heavy 4 door car to make daily driver next year and will probably be switching to the 1.15 AR to see what it will make. It made 686rwhp this year thru the stalled auto, 9" and 33" tires. I'd like to see ~715rwhp on the new ride on 18lbs through the stalled auto and 8.8 with smaller tires if I can get the new housing.
What is the most anyone has put down with the TC78?
What is the most anyone has put down with the TC78?
12-23-2010, 01:22 AM
#74
for a 99% street car with T56 and stock bottom end i would be leaning towards the .96 ar , because you won't be running high boost, back pressure won't be such a problem, and with a M6 the quicker the spool between shifts the better.
If you have intentions of forgeing the engine down the track and cranking up the boost, go the 1.15
if you haven't already bought the turbo get the tc78....
If you have intentions of forgeing the engine down the track and cranking up the boost, go the 1.15
if you haven't already bought the turbo get the tc78....
No intentions of forging the engine, want to keep stock for 500whp thru M6 and keep it mild-mannered & reliable. Building turbo piping as of right now, would like to merge before the flange for the wastegate, however I'm now unsure of what direction to go with my 1.15 divided housing.....
12-23-2010, 01:40 AM
#75
Here's a question: .96 undivided, 1.15 knife-edged divided or 1.15 divided with appropriate hot pipes divided up to the flange?
No intentions of forging the engine, want to keep stock for 500whp thru M6 and keep it mild-mannered & reliable. Building turbo piping as of right now, would like to merge before the flange for the wastegate, however I'm now unsure of what direction to go with my 1.15 divided housing.....
No intentions of forging the engine, want to keep stock for 500whp thru M6 and keep it mild-mannered & reliable. Building turbo piping as of right now, would like to merge before the flange for the wastegate, however I'm now unsure of what direction to go with my 1.15 divided housing.....
12-23-2010, 02:19 AM
#78
11 Second Club
iTrader: (11)
Join Date: Dec 2008
Location: San Diego/ from the 316
Posts: 784
Likes: 0
Received 0 Likes
on
0 Posts
by the way STOCK48
you EVER want to sell that truck let me know...i will be wanting a truck when get back from an afghanstan tour i will be doin next year.. you know where to find me... cencal...
just keep that in mind
you EVER want to sell that truck let me know...i will be wanting a truck when get back from an afghanstan tour i will be doin next year.. you know where to find me... cencal...
just keep that in mind
