Toyota Performance Turbocharging Setup Guidelines
Turbocharging any engine increases the strain on all of the engine components.
At each level of additional boost new issues for engine configuration develop
and need to be addressed
Keep in mind components that work for low boost applications may not take the
strain of high levels of boost.
The following are things to consider when setting up an engine for turbo or
blower use:
Do not attempt to use carburetors or mechanical ignition timing controls.
Do not attempt to run high boost levels with the stock 22re management system.
consider a swap to the 22re/t management, if you need a challenge, or use a
"simple digital system" (sds).
Do not add a turbocharger to a high mileage engine with out tear-down or engine
inspection.
Do not run boost levels above 4-6 psi on engine compression ratios above 8.0:1
unless you can significantly retard timing under boost.
Do use programmable engine management systems such as sds systems.
Do use premium octane pump fuel for street use and (typically) race fuel for
boost levels over 10 psi.
Cams
Custom grind camshafts are available for all levels of boost and rpm ranges.
Valve train
For the most performance, valve size, springs and cyl head porting changes are
needed to match each desired level of boost and camshaft profile used. Check out
our street performer head with dual valve springs and titanium retainers along
with the pro cam kit.
Compression ratio
To achieve a reliable turbocharged engine, you will need to lower your
mechanical compression ration to 8:1. This can be done on a stock efi engine by
changing the pistons during rebuild. Cast and forged piston kits are available
that will achieve this ratio. Call regarding specific needs.
Bottom end stock engines have adequate strength for low boost and low rpm. For
higher levels of boost and performance a pro crank and pro rods and forged
pistons should be used.
Fuel and ignition Management
Sds programmable fuel injection will control the fuel curve and ign timing.
Intercoolers allow the use of high boost levels and increased performance. There
are many designs and locations to position them, please call for specific needs.
Want to build your own intercooler?
See this - Intercooler
All the items addressed here have a direct bearing on the cost of turbocharging
your engine. Please call and talk to us about your needs and desires so we can
give you a more detailed estimate. Don't delay, contact TCR today. Call us at
(520) 747-0563.
Back to FAQ/Tech
