which turbo
10-12-2002, 01:49 AM
#14
Senior Member
Join Date: Jul 2002
Posts: 253
lots of options. deciding can be hard. if money is no object call innovative turbo. they make a bunch of custom versions of stuff with dual ball-bearings. i would think the smaller wheeled large frame turbos with dual ball bearings and billet wheels with lightened spindles sounds like what i'd do if i started over.
another option. use the stock twin manifold and go with a smaller primary turbo and a larger -- medium sized -- ball bearing secondary. get someone to figure out a reworking of the changeover from primary to dual, using the controls available on the aftermarket ecu's instead of the solenoid based setup stock. in other words, when the haltech (motec, pfc, whatever...) sees reference boost of 2 psi ("X"), have it turn on the solenoid that brings the secondary online. more precise and all controled by the ecu and no ******* vacuum hoses. use an external wastegate.
just machine out the stock units and put in ball bearing wheels. put in a larger exhaust wheel on the secondary to get it to flow more. use the same ecu set up described above to bring the secondary online and an externmal wastegate.
these are just some ideas. the reason i'm throwing them out is that i think many of us get going in the wronmg direction. just buying bigger and better single turbos is not the only or right answer to each of our needs and desires. the biggest 51's and 88's and ball bearing gt3540's are not necessarily the best answers today. back when i went single in january of 1999, there were very few choices. the T78 and garrets were the only real choices in kits. there was only the motec and electromotive ecu's and they weren't being used on rotaries much (at all). today, there are infinite choiuces, but think creatively and not simply linearly. that is, think in more than 2 linear paths or diminsions. the most common being bigger and ball bearing or not.
i think there are a lot of possibilities using the stock twin hgousings, combioned with different wheels and different methods of actuating the secondary.
-gordon
another option. use the stock twin manifold and go with a smaller primary turbo and a larger -- medium sized -- ball bearing secondary. get someone to figure out a reworking of the changeover from primary to dual, using the controls available on the aftermarket ecu's instead of the solenoid based setup stock. in other words, when the haltech (motec, pfc, whatever...) sees reference boost of 2 psi ("X"), have it turn on the solenoid that brings the secondary online. more precise and all controled by the ecu and no ******* vacuum hoses. use an external wastegate.
just machine out the stock units and put in ball bearing wheels. put in a larger exhaust wheel on the secondary to get it to flow more. use the same ecu set up described above to bring the secondary online and an externmal wastegate.
these are just some ideas. the reason i'm throwing them out is that i think many of us get going in the wronmg direction. just buying bigger and better single turbos is not the only or right answer to each of our needs and desires. the biggest 51's and 88's and ball bearing gt3540's are not necessarily the best answers today. back when i went single in january of 1999, there were very few choices. the T78 and garrets were the only real choices in kits. there was only the motec and electromotive ecu's and they weren't being used on rotaries much (at all). today, there are infinite choiuces, but think creatively and not simply linearly. that is, think in more than 2 linear paths or diminsions. the most common being bigger and ball bearing or not.
i think there are a lot of possibilities using the stock twin hgousings, combioned with different wheels and different methods of actuating the secondary.
-gordon
11-02-2002, 07:33 PM
#17
Senior Member
Join Date: Nov 2001
Posts: 477
If you have the money, the T51R KAI dual ball bearing would be my choice. Its now available in the States. Spools 1000rpms faster than the standard T51R KAI.
OR you could always go with the SR Motorsports KKK Stage 2.... :smirk:
OR you could always go with the SR Motorsports KKK Stage 2.... :smirk:
11-03-2002, 02:17 AM
#18
Senior Member
Join Date: May 2002
Location: Okinawa, Japan
Posts: 4,928
Originally Posted by Dragon' date='Oct 12 2002, 03:07 PM
go check out Turbonetic...
All I need is a BP/diff/4.7 final gear!...
11-04-2002, 10:23 PM
#20
Member
Join Date: Feb 2002
Location: San Jose, California
Posts: 71
IMO, if the car does not have to be streetable go with a T51R Kai BB. as for the difference between the Kai and the SPL is the compressor wheel size and entrance diameter. the Kai as a 94mm wheel and 70.3mm entrance, and the SPL has a 102.2mm wheel with a 76.5mm entrance, everything else is the same.
for my 7 i'm getting a Trust TD06SH-20G, it spools fast, gives a nice amount of power and it doesn't cost a shitload of $$$.
for my 7 i'm getting a Trust TD06SH-20G, it spools fast, gives a nice amount of power and it doesn't cost a shitload of $$$.