370ci, rear mount - suggestions?
#23
TECH Resident
Thread Starter
iTrader: (7)
Join Date: Dec 2008
Location: CT
Posts: 796
Likes: 0
Received 0 Likes
on
0 Posts
Another typical noob question I am not seeing when running a search lol
2-Step!
What needs to be done to make it happen?! Anyone experience any issues with rear mounted turbos?
ALSO!
Will a Tubular K-Member help with clearance so I can bring the charge pipe up higher away from the ground?
2-Step!
What needs to be done to make it happen?! Anyone experience any issues with rear mounted turbos?
ALSO!
Will a Tubular K-Member help with clearance so I can bring the charge pipe up higher away from the ground?
Last edited by sujomatt; 01-06-2010 at 10:03 AM.
#24
LS1Tech Sponsor
iTrader: (12)
The downfall of the rearmount with the power goals is the serious lag it will have and the backpressure on the exhaust valves. We ran a T70 on a 346 which made 700rwhp at 16lbs of boost.It would full spool at 4-4.5k rpm compared to a front mount turbo we did after that would full spool at 3k rpm.
Another note,with the 16lbs the car would lift the head gaskets during WOT 4th gear pulls down the highway.
Another note,with the 16lbs the car would lift the head gaskets during WOT 4th gear pulls down the highway.
#25
TECH Resident
Thread Starter
iTrader: (7)
Join Date: Dec 2008
Location: CT
Posts: 796
Likes: 0
Received 0 Likes
on
0 Posts
The downfall of the rearmount with the power goals is the serious lag it will have and the backpressure on the exhaust valves. We ran a T70 on a 346 which made 700rwhp at 16lbs of boost.It would full spool at 4-4.5k rpm compared to a front mount turbo we did after that would full spool at 3k rpm.
Another note,with the 16lbs the car would lift the head gaskets during WOT 4th gear pulls down the highway.
Another note,with the 16lbs the car would lift the head gaskets during WOT 4th gear pulls down the highway.
#27
TECH Enthusiast
iTrader: (6)
if that is all just get the block or heads oringed and you shouldn't have to worry about pushing water. I am not sure if lifting the heads and pushing water is the same thing here but there have been guys with more psi doing fine with the rear mount. I am currently going to invest in a 2-step but I have books to buy for school so it will have to wait a month. I am probably going to get the MSD one from summit.
#29
TECH Resident
Thread Starter
iTrader: (7)
Join Date: Dec 2008
Location: CT
Posts: 796
Likes: 0
Received 0 Likes
on
0 Posts
if that is all just get the block or heads oringed and you shouldn't have to worry about pushing water. I am not sure if lifting the heads and pushing water is the same thing here but there have been guys with more psi doing fine with the rear mount. I am currently going to invest in a 2-step but I have books to buy for school so it will have to wait a month. I am probably going to get the MSD one from summit.
What numbers are you making?? Sounds solid
Last edited by sujomatt; 01-06-2010 at 12:13 PM.
#30
TECH Resident
Thread Starter
iTrader: (7)
Join Date: Dec 2008
Location: CT
Posts: 796
Likes: 0
Received 0 Likes
on
0 Posts
Would the ST80 1.0 a/r work well on this as well? i saw something on zombie's - seems to be making power and using that quick spool
is the TC78's exhaust divided/TS for a quick spool?
is the TC78's exhaust divided/TS for a quick spool?
Last edited by sujomatt; 01-06-2010 at 02:19 PM.
#34
TECH Fanatic
iTrader: (6)
ST80 or SX80 will indeed flow more and have less backpressure issues. I would go bigger than 1.0 on the AR. If you are going to use a quick spool, go like 1.2-1.3 on the AR. The TC78 can be bought with a 1.15 divided housing that you could use a quick spool valve on. You need to figure out what HP you want to be at the crank and size your turbo from there. Up to 1000 the TC78 would be great. You want 1200-1400, then you should get the ST or SX80.
#37
TECH Resident
Thread Starter
iTrader: (7)
Join Date: Dec 2008
Location: CT
Posts: 796
Likes: 0
Received 0 Likes
on
0 Posts
Yea for simplicity sake I think I may do the TC78.. Still thinking about it. (I thought I saw something about a GTS version - could you elaborate on that DrTurbo?)
Also, I dont know if this was covered - but is a Turbo Tubular K Member useful with a rear mounted system? Or just grab a plain old Tubular K Member? Figured while I am there, save some weight..
Also, I dont know if this was covered - but is a Turbo Tubular K Member useful with a rear mounted system? Or just grab a plain old Tubular K Member? Figured while I am there, save some weight..
#38
Yea for simplicity sake I think I may do the TC78.. Still thinking about it. (I thought I saw something about a GTS version - could you elaborate on that DrTurbo?)
Also, I dont know if this was covered - but is a Turbo Tubular K Member useful with a rear mounted system? Or just grab a plain old Tubular K Member? Figured while I am there, save some weight..
Also, I dont know if this was covered - but is a Turbo Tubular K Member useful with a rear mounted system? Or just grab a plain old Tubular K Member? Figured while I am there, save some weight..