Post by
npez »
https://forums.nicoclub.com/npez-u74890.html
Mon May 12, 2008 6:18 am
My project is a 93 300ZX Twin-Turbo receving a 94 VH45 motor after a freak major bottom end failure on the VG30DETT at 76K miles. The project is a multi-phase approach (like others on NICO) consisting of a base setup and then something more; in my case a twin-turbo setup. The car is intented to be a strong GT street car. The basic idea is:
Phase I - Get the car running normally aspiratedEngine - Purchased - craigztoyz assisting with engine mount and oil pan fab Transmission - Mazworx Adapter to VG MT - Purchased - Planning on using existing RPS Cyn-R-G lightweight flywheel and RPS clutch.Fuel - Will use stock TT fuel pump and VH injectors. Sorting out bending fuel lines to the LH side of engine bay to better integrate with Zs setup. Craig excellent suggestionElectrical - Sorted out and in process of soldering "sister" harness to use z ECCS/EGI, etc. relays, fuel pump controlle, etc. into VH EFI harness - posted integration document on forum.
Phase II - Bring on the boost - Goal reliable 500-600RWHP (based on initial calculations about 14-18psig)Engine - Rebuild with 8.5 or 9:1 CR pistons and stronger rodsTurbos - TBD - Rear mounted Twin-Turbo intercooled setup researching turbo sizing based on NICO members experiences, Garrett website as well as Corky Bell's book. Not sure if I will be able to integrate my B&B exhaust or if it will restric airflow.Intercooler - TBD - Leaning on air to water setup possibly with A/C suction side integration Oil Cooler - Re integrate Calsonic TT oil cooler (bigger if needed)Fuel - Have a set of new 555cc NISMO injectors I purchased for the VG30DETT. Will either buy 2 more or if deemed too small will sell and bump up to higher capacity ones.Cooling - Install Z1 motorspors ultimate cooling package (Howe Radiator, Flex-a-lite fan, etc.) I purchased for the ZEngine Management - TBD - Leaning towards factory ECM and adding a romulatorOther - Will need to sort out MAF choking at this level of boost.
That's about it. I am trying to break this down to many small projects to make it happen but I still believe phase 2 is still 1 year away from phase 1 completion. The strategy is to design/purchase all the parts (3-6 months) and then take 3-6 months to integrate/install. I'll post pics of the progress soon.
Nick.