Re: ITB Conversion on sixteen valve 4AGE On my stock bigport AW11 a leaking exhaust manifold gasket brought on the O2 sensor to read lean and it pumped gasoline in the motor. Fuel overall economy plummeted until I sorted it out.

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The Silvertop is similar to all former A-series engines built just before it in that it uses an easy and reliable sprung idler wheel to keep pressure within the belt. The Blacktop’s utilize a hydraulic tensioner and it’s personal unique belt tension pulley to match.

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Why would the carbs remaining unsynched adjust theAFR? Some cyls would operate wealthy an some lean but Should the O2 is Functioning then it will eventually still regular out to stoich.

If it may't then you should be most effective off fitting a stock narrowband sensor and studying the AFR using your Denso from the wideband sensor already equipped.

I drove the vehicle as my day-to-day for a week or two soon after i got it. The engine ran wonderful. Pulled pretty hard. Tranny shifts silky smooth.

The left flywheel pictured is the sooner Silvertop design when the proper could be the lightened Blacktop.

Increase to quotation Only exhibit this consumer #10 · Jul 21, 2013 I should suitable myself although the tps connector is exactly the same and you can make use of the one within your 7afe harness but they need to be repinned! The pins are located in the other strategy for the 7afe.

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4. I will go away it for you to choose It really is an awkward position just observing what you are trying to regulate, and with a lot less that 4 palms to hold a light-weight, feeler gauge, hex important, very small spanner and rotate the linkage to some extent exactly where you can obtain on the adjusting screws.... I found it much easier to do to the bench.

– Conversion notes: The spung tensioning technique is usually swapped on to the Blacktop but Additionally, it calls for the swap of assorted other factors. In whole the areas essential from the Silvertop might be the oil pump, cam belt, cam belt stress pulley, tensioning spring, the metal publish fitted into your block for that spring to loop about and Finally that The underside and Center plastic belt covers either be adapted or changed to that as used on the Silvertop.

The 4A-FE differs through the 4A-GE in terms of functionality and ability. Even though each have the exact same displacement and therefore are DOHC, they have been optimized for various works by using. The initial obvious big difference are definitely the valves, the engine's intake and exhaust valves ended up put 22.3° apart (as compared to 50° within the G-Engines). The next is always that it utilized Toyota's Significant-Mecha Twin Cam procedure,[eighteen] where by both camshafts are geared along with a singular timing belt driving the exhaust camshaft plus the exhaust camshaft drives the inlet camshaft by way of scissor gears check here (both camshafts around the G-Engine are driven through the timing belts as a substitute).[twenty] A few of the a lot less right visible differences were compact combustion chamber patterns with heavily shrouded valves, much less aggressive camshaft profiles, a cast crankshaft (as opposed to a forged crankshaft from the 4A-GE), ports of a little cross sectional place, an extremely restrictive intake manifold with very long runners joined to a little displacement plenum along with other improvements.

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