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The mkiv Supra Owners Club

Thinking of buying some cam gears please help


davep

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There is no performance difference unless you adjust them. No-one has ever posted up here about any useful gains from adjusting them so you're on your own, except Terry S did once try a lot of different settings and they all turned out to be worse.

 

-Ian

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There is no performance difference unless you adjust them. No-one has ever posted up here about any useful gains from adjusting them so you're on your own, except Terry S did once try a lot of different settings and they all turned out to be worse.

 

-Ian

 

Mine were adjusted when the car was mapped for TTC setup, I'll check the settings next time I have the engine cover off.

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Adjusting the cam timing won't normally return more power, just move the power band elsewhere in the rev range.

 

Plus there were some documented cases of the blingy cam gears wearing very fast, losing their anodised colours, stripping cam belt teeth....there's also the question of where 3-bolt cam gears are strng enough, maybe you should get a 5-bolt version...

 

Personnally I'm not going to bother, unless I ever get into either the show 'n shine scene, or go big-power.

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OK guys this was just from personal testing in 2002 I think, and has been repeated on the forum a few times over the years:

 

We had the engine out of the purple car on an engine dyno to be mapped. It was a fully built engine, T70 turbo ( surging POS that was only on the car about 1 Month!). Ported Polished Head with 256 IN/264 EX cams, and HKS Cam gear. I had the dyno guys try various cam timing combinations and it always came back to the same thing. You could make more BHP, or more torque, but one was always detrimental to the other. We settled on the stock settings. ( Seems Mr Toyota isn't daft after all ;) )

 

As for adjustable cam gear, if you must have them, make sure they have steel gear, I know from bitter personal experience.

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