Element Tuning Competition Engines for Subaru FA20 or FA20DIT

Element Tuning Competition Engines for Subaru BRZ, Scion FRS, Toyota FT-86 with FA20 or WRX FA20DIT

Element Tuning’s Pro Comp engines were born with a racing pedigree. Our engine program has over 9 years of R&D through thousands of miles racing Subaru engines exclusively. Every specification these engines are blueprinted to were derived from our long term racing data. We build the best engines you can buy! We’re confident saying this as every aspect of these motors has been tested and verified under the most demanding racing circumstances.

Element Tuning Pro Comp engines are built from 100% new components fitted to our exact standards in your provided engine.  Our bearings and clearances have been tested for 10,000+ miles of racing. You may ask us how is this possible? It’s very common for racing teams to run new engines multiple times in a racing season but we would not allow this for our long term R&D. The only way to have long term durability data on your engine program is to continue using the same parts. Each season or sometimes midway through the season we would tear down our motors to inspect how the parts were holding up and how our building specifications were performing. We would inspect items such as cylinder wear, ring wear, piston wear, oil consumption, hardware fatigue, and finally crank and rod bearing wear. As long as there was no component failure we would reuse the same bearings, crank, rods, block, and pistons and continue the durability testing.It was not uncommon for us to push all the extremes to find the maximum and minimum operating range of each component and it’s clearance. With this data we have been able to build an engine that not only makes huge power but has near OEM oil level consumption. All too often motors are built too loose causing lots of engine noise, too much cylinder blow-by, and major oil consumption issues. We have tested our combination to deliver the tightest, most trouble free, and durable engine you can buy at any price.

Engine Oiling! Nothing will kill your brand new motor faster than inadequate oil pressure.  Unfortunately the FA20 series of engines do not have adequate oil pressure for substantially more power or RPM.  Even under OEM power levels excessive oil temperature from this motor has oil pressure dropping into the 50 psi range.  While this may be OK for NA power levels it’s nowhere near the reliable pressure we need for a boosted motor.  Look at the FA20 crank mains and the rod journals and you should spot something unique where we oil starved the rod bearing. The third main from right to left has a larger oil port. Why? Because it has to feed two rod journals where all others only feed one rod journal. What happens to oil pressure when you increase the oil port size? What happens to you oil volume requirements when you need to feed two journals with one main? Guess which one failed?  Unlike the EJ series of Subaru motors this engine does not have a “main priority” oiling system and therefore critical oil pressure isn’t directed to the engine bearings first.  The OEM oil pumps that are fitted to the BRZ/FRS and also the WRX (which is 14mm compared to 12mm) does not provide adequate volume to support the required oil pressure and therefore an bearing failure is eminent with any engine that doesn’t address the lack of oil pressure.

Element Tuning engines are the only engines to solve this problem! While we hoped we could simply install a bigger oil pump, which we did test, it was still not enough to get oil pressure high enough to be reliable on this boxer engine.  What we do, we keep close at hand but it’s not one thing but a series of modifications and the blueprint of our engines that allows us to keep over 80 psi of oil pressure under street conditions and over 70 psi under racing conditions.  This is enough oil pressure to safely support 500+ whp!

The Connecting Rods. The Achilles heal to our beloved OEM FA20 motors have been the OEM connecting rods.  While these rods are perfectly suited for OEM hp levels, when the power increases above 300 and RPM exceeds 7500 they are no longer reliable.  We experienced OEM rod failure under racing conditions in the 350 ft/lbs of torque range.  Element Tuning engines are fitted with seriously stout Pauter Machine forged Asymmetrical “X” beam connecting rods using ARP 2000 bolts.  We’ve tested these rods to over 800 whp and 9k RPM so they’ll handle just about everything you can through at them!  The unique design of the X beam allows for less windage (oil slinging and air displacement) in the crankcase reducing frictional losses.

Pauter’s 4340 forged X beam rods which are manufactured to the highest standards in the industry. Element Tuning has fully tested these rods in our Time Attack program with exceptional success and performance. Each billet rod is CNC machined from 4340 steel forgings, shot peened, stress relieved, and heat treated for uncompromising strength and reliability. Manufactured and precision machined in the USA to within .0002″ ensures exacting fitment and balanced to within 1 gram.

To read the rest about Element Tuning FA20 based engines Click Here

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