Ninka Donating Members 1,850 Member For: 22y Gender: Male Location: Perth, WA Posted 05/06/12 09:18 AM Share Posted 05/06/12 09:18 AM BF Cams are better than BA units, and engine is more responsive.I did the switch a few years ago, as my car was 'born' a BA.Can't speak for top power though, as I never did a before/after test. Link to comment Share on other sites More sharing options...
XR6menace BANNED Banned 1,462 Member For: 17y 7m 26d Gender: Not Telling Location: banned Posted 05/06/12 09:18 AM Share Posted 05/06/12 09:18 AM More overlap combined with greater duration = faster spool time and more area under the curve for boost .. HTHRemember standing behind a cammed N/A and how far the exh pulses go?Now imagine that hitting your turbines>> but what would I know ??As for choice I havn't a clue sorry... Link to comment Share on other sites More sharing options...
JET_XR Member 24 Member For: 12y 6m 22d Posted 05/06/12 01:11 PM Share Posted 05/06/12 01:11 PM I think it's going to be one of those things that will bug me untill I do it. I've spent way too much money on it this year so I'll spend some time researching and planning for a while. It's probably a different thing but I had an n/a 6cyl el with a mid to high range cam (pretty much in the middle of a stage 2 and stage 3 profile), and I remember how it changed the feel of the car. I don't now how much extra power it made but I really enjoyed how it delivered the power a lot more aggressively. Of course the downside is being too aggressive for the street. Link to comment Share on other sites More sharing options...
Ninka Donating Members 1,850 Member For: 22y Gender: Male Location: Perth, WA Posted 05/06/12 02:27 PM Share Posted 05/06/12 02:27 PM Just remember, you are dealing with a forced induction engine in the XR6T, and the game is completely different in terms of cams. 1 Link to comment Share on other sites More sharing options...
bcl Toughest BA Turbo Lifetime Members 3,408 Member For: 21y 11m 29d Gender: Male Location: Sydney Posted 05/06/12 09:58 PM Share Posted 05/06/12 09:58 PM More overlap combined with greater duration = faster spool time and more area under the curve for boost .. HTHNot in a turbo car.Slower spool time, but more top end.Since the mid 80's (that I remember) turbo cars run less duration, relying on boost for power, with the benefit of lower emissions from delaying the opening of inlet cams and closing the exhaust cam earlier.VVT is the only thing to save you, to assist spool up,but if my memory serves me correctly there is no proper independent cam timing in the BA, a hardware constraint, unless it is an F6. Brian Link to comment Share on other sites More sharing options...
XR6menace BANNED Banned 1,462 Member For: 17y 7m 26d Gender: Not Telling Location: banned Posted 06/06/12 12:17 AM Share Posted 06/06/12 12:17 AM Bugger, thanks Brian for clearing that up .. crawls back into my hole now Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 8m 23d Gender: Male Posted 06/06/12 12:01 PM Share Posted 06/06/12 12:01 PM (edited) 20 years ago when I turboed my torana I initially just used the wild XU1 cam that I had. It pinged on relatively low boost as there was too much overlap and just pushing everything out the exhaust.I then played with a few cams since then and ended up with a grind that gave me 500+hp at around 23psi with no detonation in sight on pump fuel. I did have 25+ lb of boost but never on the dyno. I used around 113 lobe centres and did play alot with opening and closing points for both inlet and exhaust to get a detonation free engine.My advice is whilst there are power gains you can still achieve ridiculous power without them. Having two variable stock cams to deal with (inlet and exhaust) is enough as it is. So you are adding alot of work for not alot, expecially if you are not a hands on engine builder and you intend paying someone to sort it out.And the biggest factor is that its not like you have a live programable engine management system where you can adjust tuning maps. All you have is tuners who adjust scallers, that's really not called tuning.So I would just stick with stock cams. Edited 06/06/12 12:02 PM by turbotrana Link to comment Share on other sites More sharing options...
rip85 ripsey Member 19 Member For: 11y 9m Posted 05/04/13 11:18 AM Share Posted 05/04/13 11:18 AM Aby one got any vids of there motor fitted wit these cams as I ordered some today just wondering what it sounds like Link to comment Share on other sites More sharing options...
Mr_4.0 Member 1,096 Member For: 13y 11m 5d Posted 05/04/13 12:25 PM Share Posted 05/04/13 12:25 PM Stage 4+ are douphased and sound like stock when tuned properly. Link to comment Share on other sites More sharing options...
Mr_4.0 Member 1,096 Member For: 13y 11m 5d Posted 05/04/13 12:28 PM Share Posted 05/04/13 12:28 PM Actually just checked the website. The stage 4 and 4+ are both duophased now. Looking at specs, the 4+ should sound a little lumpy but the 4's could sound stockish. Link to comment Share on other sites More sharing options...
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