Toymods Car Club Inc: Tech & Conversions => Finaly:Which engine to get? AE86 sr20det v 13b(non turbo)

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Nark
Forums Junkie

Location:
Cabramatta, NSW
Registered:
May 2002

Re: Finaly:Which engine to get? AE86 sr20det v 13b(non turbo)

Thu, 20 May 2004 12:36

I know someone who's considering a turbo 3RZ-FE for motorkhana duties in an RA60.

Prolly a bit heavy for an AE86 though.

Check this little speil out:

Quote:

Toyota's new 4WD LandCruiser Prado RV has the most advanced four-cylinder
commercial vehicle engine in Australia. It has twin contra-rotating
balance shafts for exceptional smoothness in a large-capacity in-line four
design.

The new Prado four-cylinder 2.7-litre engine has more power and torque
than the major competitor's 3.0-litre V6. It has more power and the same
torque as superseded Toyota 4Runner V6.

The new 2694cm3 Toyota 3RZ-FE engine delivers 112kW (ECE) of power at
4800rpm and 240Nm (ECE) of torque at 4000rpm. It has more than 200Nm of
torque from 1250rpm to 5200rpm.

The new Prado four has 49 percent more power and 30 percent more torque
than the single overhead camshaft eight-valve 2367cm3 22R engine in the
superseded entry level 4Runner. Technical features in Prado's new EFI and
twin balance shaft-equipped Twin Cam Multi-valve engine are equal to - or
better than - many ontemporary passenger vehicle engines.

Designed For Low NVH

Toyota designed Prado's new four-cylinder engine for a combination of high
performance, fuel efficiency and reliability, coupled with low emissions
and low NVH. The bottom-end of the new 3RZ-FE engine borrows many strength
and durability features from race-engine technology. It has a deep-skirt
cast-iron cylinder block and fully balanced eight-counterweight crankshaft
for low NVH. The crankshaft has hardened pins and journals, and rolled
fillets, for increased durability.

The connecting rods are forged from a special carbon steel, chosen for its
ability to withstand high operating speeds and pressures while meeting
targets for low reciprocating weight. The conrods are double shot-peened
for increased strength and durability.

The Toyota 3RZ-FE engine has alloy pistons with resin-coated skirts to
reduce friction. There is an oil-jet in each big-end bearing to cool the
under-side of the pistons.

The 3RZ-FE engine also offers plastic region tightening bolts for the
cylinder head, conrods and crankshaft main bearings. Plastic region
tightening provides optimum clamping force for a given weight of bolt.

For package efficiency and high durability, the 3RZ-FE has a low-wear
camshaft timing chain rather than a belt. An oil jet on the hydraulic
chain tensioner lubricates the chain, and the timing chain drives the
inlet camshaft.

Drive to the exhaust camshaft is by "scissor" gear drive from the inlet
camshaft for optimum package efficiency and low noise. Chain drive is also
employed to drive the twin contra-rotating balance shafts. Balance shaft
number two is driven directly by the chain in the same direction as the
crankshaft, while an idler gear is used to drive balance shaft number one
in the opposite direction. In addition to the balance shafts, the Prado
four-cylinder engine has a torsional damper pulley to reduce NVH.

Performance and Economy

Prado's new four-cylinder engine combines high performance with high fuel
efficiency and low emissions. It has square (95mm by 95mm) bore and stroke
dimensions, for a balance of power and low-to-mid-range torque.

Multi-valve cylinder head technology has been adopted for better breathing
and maximum fuel efficiency. The new Prado 3RZ-FE engine has four valves
per cylinder arranged in a compact pentroof combustion chamber with a
19-degree included valve angle.

Copied from here:
http://www.a1.nl/phomepag/markerink/toy_90_i.htm

As for the AE86. Stick with a 4A-GTE or 3S-GTE.

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