The legacy of the 4AGE engine is backed by a wealth of information, accolades, and also a focused community that carries on to celebrate its impact on the automotive world.
As a result they're not interchangeable concerning each other Except the matching VVT pulley is likewise equipped, by way of example there are no issues with fitting equally the cam and VVT pulley supposed for your Blacktop engine alongside one another on to a Silvertop. Please see the article “Working with VVT” for more information.
The most crucial takeaway from this sort of an endeavor is purely an equation of simply how much air the engine can properly choose in and how much combustion energy is directed at shifting the pistons rather than getting wasted warmth.
There are angular alignment reference details for that timing belt technique in the form of a little protrusion over the oil pump as well as matching notch eliminate with the timing belt push pulley’s rear flange. For no explicable rationale the timing marks / notch on the Blacktop engines are 50 percent a tooth / 10 degrees more clockwise than the usual Silvertop.
The connecting rods also are beefier, just like the 4AGZ. The 1st generation block experienced lesser wrist pins and rod journals, which really should be high-quality for milder tunes. For critical Competitiveness the rods need to be replaced.
The Silvertop con-rods are extremely solidly created and with bolts weigh in at 506 grams each (without having bearings). The Blacktop was equipped with thinner, lighter and weaker rods that are 485 grams Every. Both are easily interchangeable and use the same fasteners for the main bearing cap, therefore the ARP fastener improve suits both equally as does a whole list of billet aftermarket rods.
Yamaha created the engine for efficiency; the valve angle was a comparatively wide 50 degrees, which at enough time was believed to be perfect for substantial energy production.[twenty five] Nowadays, numerous modern superior-revving engines have diminished the valve angle to twenty to twenty five degrees, permitting for a far more smaller and compact cylinder head and it is now thought for being ideal for large-revving engines with significant distinct energy outputs.
The remaining flywheel pictured is the earlier Silvertop structure whilst the best would be the lightened Blacktop.
Back again then, with that standard of engineering, the engine appeared to have by now been pushed to its absolute Restrict.
The 4AGE engine has built its way into numerous legendary Toyota models, Each and every featuring a unique driving practical experience. In this article’s a detailed list of several of the most noteworthy automobiles which were graced using this type of remarkable engine:
To permit for the Map studying with the Blacktop engine (see “load metering”) the inlet manifold provides a wider encounter for your facet of the head with a further vacuum feed off each cylinder that brings about an integral chamber to get a vacuum sign to feed the Map sensor. The Blacktop head highlighted a broader flange encounter to Permit these channels a sound area to seal from.
The silvertop shares get more info the identical 48mm diameter thermostat because the 16V versions whilst the Blacktop uses a significantly larger 56mm.
I had been gonna return the engine, but last but not least, Greg from your J&Jmotors crew talked me into preserving it, and don’t regret it in any respect. seven months in and also the motor is running effortlessly being a motherf*ker
Among the list of quickest shipping situations for Global consumers. As far as I’m involved Craig and the guys at JnJmotors are absolutely the head to’s for all my 4AGE swaps.