"Captain Retard" Member 1,417 Member For: 9y 11m 25d Gender: Male Location: Shellharbour NSW Posted 12/02/15 10:49 PM Share Posted 12/02/15 10:49 PM I think lobe separation is the only thing that is adjustable with the XR6 variable valve timing.But I'm only guessing because I've never really looked at this setup that hard.Variable valve timing is all new to me.But I'm keen to learn more from those that know. Link to comment Share on other sites More sharing options...
BRK Member 361 Member For: 12y 4m 14d Gender: Male Location: Perth Posted 13/02/15 12:00 AM Share Posted 13/02/15 12:00 AM Never stuck a dial guage on the camshafts however, the workshop I use have. The BA turbo cams have less timing than the BF. They have not bothered with the FG. The VCT system in BF onwards works on both camshafts.The VCM tuning packages allow for some changes in the operation of the VCT. Minor adjustments within this system does not seem to produce marked changes in power but my observations of this are limited to a couple of minor adjustments made to the tune in my car and in the end, they were put back to stock. The only "cammed up" xr6t I have seen on the dyno was unimpressive. Had a slight lope at idle, power curve favoured the top end and road manners were ordinary. IMO, the owner would have been better off winding in an extra 2psi of boost and would have got a better result. His bux, his choice.There are others on the forum who have asked the same questions and others who have looked at ( or undertook) cam changes in-depth. IMO. for overall power and driveability in what might be called the "useable rev range" - being idle to 5800 rpm - stock FG turbo cams ( with good springs ) are the best. After that, go to the aftermarket. 2 Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 6m Gender: Male Location: Perth Posted 13/02/15 01:27 AM Share Posted 13/02/15 01:27 AM BF/ FG cams are a good upgrade on BA. I picked up nice midrange and about 25rwkw peak 1 Link to comment Share on other sites More sharing options...
raz1911 Member 110 Member For: 10y 11m 13d Gender: Male Posted 13/02/15 02:15 AM Share Posted 13/02/15 02:15 AM Time to find someone wrecking a FG Link to comment Share on other sites More sharing options...
RIP85 REST IN PEACE V8 Donating Members 469 Member For: 16y 6d Gender: Male Location: Woodridge on the park bench Posted 13/02/15 03:11 AM Share Posted 13/02/15 03:11 AM 4.5 atomics with fixed gears 240km to a tank when running 98 fuel 60kw gain over bf ams 4 Link to comment Share on other sites More sharing options...
bjc Donating Members 2,812 Member For: 20y 7m 24d Gender: Male Location: Townsville Posted 13/02/15 03:32 AM Share Posted 13/02/15 03:32 AM I suppose I should borrow someone's pos car and write off an FG! Link to comment Share on other sites More sharing options...
bjc Donating Members 2,812 Member For: 20y 7m 24d Gender: Male Location: Townsville Posted 13/02/15 03:34 AM Share Posted 13/02/15 03:34 AM 4.5 atomics with fixed gears 240km to a tank when running 98 fuel 60kw gain over bf amsDo you drive everywhere on full throttle? Or is it that 200lb inj just can't run a small enough duty cycle? Link to comment Share on other sites More sharing options...
RIP85 REST IN PEACE V8 Donating Members 469 Member For: 16y 6d Gender: Male Location: Woodridge on the park bench Posted 13/02/15 04:12 AM Share Posted 13/02/15 04:12 AM (edited) 2000cc injectors even with the ida 1000 maybe 280 to a tank of fuel I wouldnt go anything over an atomic cam 4s for daily driver Edited 13/02/15 04:12 AM by RIP85 Link to comment Share on other sites More sharing options...
IH8TOADS Silver Donating Members 3,618 Member For: 18y 9m 20d Gender: Male Location: OZ Posted 13/02/15 02:27 PM Share Posted 13/02/15 02:27 PM I have the Atomic 4's in a BA and they are thirsty...but have very good manners. Best sticking with factory cams for a street car IMO. 1 Link to comment Share on other sites More sharing options...
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