K that all makes sense, thanks
K that all makes sense, thanks
First of all which 20v engine is it going to go in? There are considerable differences in both silver top and black top heads. Cylinder squish areas are different. Valve springs are different. cam lobe centre offset is different. valve lift is also different even the head castings(internally) are different. Black top intake cam also have extra 5 degrees of overlap on sliver top.
Toda 20v cams are based on ae101 silver top design with cam centre at 125 degrees, they are usable with ae111, but you will need adjustable cam pulleys to dial in the cams. with adj cam pulleys you will also lose VVT which is what would be expected using such large duration cams. Toda recommends max of 272 degrees with vvt system.
Im using Toda 288 9.0mm lift cams in my black top now and have had these cams in my previous silver top.
Oh BTW, the cams cant be used with the factory 20v ECU. So invest in a high resolution aftermarket ECU to run in alpha-n mode as there is very low vaccum ( about 5-8 inch of mercury at idle) with these cams whne running quad to air. Cheap map sensing ECUs like Microtech wont cut it, so invest in something Like a Motec, Autronic or the latest Haltech E8!
Oh, I forgot using TRD 0.8mm haed gasket will increase your compression ratio slightly. This in effect will retard both intake and exhaust cams slightly. So ajustable cam pulley are strongly recommended if you want to get the most out of this setup.
are cam pulleys for 16v n 20v the same??
Exhaust cam yes, but the top mark is 1 tooth retarded.
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