Here is my Turbo Build Up
For Fuel, LPG Only, I'm using a Impco L Convertor
Impco CA225 Mixer in Blow Thru configuration with the balance Hose
(CA225 are rated a 329cfm that is for draw thru @ atmospheric pressure or blow thru at how ever many psi you like, pressure does not affect the cfm) so there how much cfm does a tb42 need?
Here is the formula
CARB CFM = CU.IN. X RPMS divided by 3456 X VE%
CFM = 255 X 4500 / 3456 X 1 (100% for Boost)
CFM = 332 well thats close enough
![Wink ;)](./images/smilies/icon_wink.gif)
I made a adaption plate a mounted a XF Throttle Body where the Carb was.
I modified a s/s RB25 aftermarket turbo manifold, cut the flange plates off that manifold and welded a extractor plate for a tb42 on.
I used a T3/T4 Turbo with a a/r 50 front cover.
I looked after my ignition using a MSD Boost Retard Timing Master and I have to say my Factory Coil was not up to the task (surprised me abit as many of you guys sware by them) so I used a Pertronics Flame thrower 40,000volts which has 1.5ohms of resistance built in, there for no more ballast resistor.
She creates 8psi of boost by 2200rpm and pulls hard to 4500, no flat spots.
I have to say the TB42 susprised the hell out of me.
![Wink ;)](./images/smilies/icon_wink.gif)