adi2009 Posted March 17, 2009 Share Posted March 17, 2009 I m going in for a set of HKS 264 In/Ex cams. Is it a necessity to install adjustable cam gears or should the stock ones be ok. I suppose you cant adjust timing with the stock one but does it run fine??? Quote Link to comment Share on other sites More sharing options...
adi2009 Posted March 17, 2009 Author Share Posted March 17, 2009 Anyone??? Quote Link to comment Share on other sites More sharing options...
Kev.O Posted March 17, 2009 Share Posted March 17, 2009 I m going in for a set of HKS 264 In/Ex cams. Is it a necessity to install adjustable cam gears or should the stock ones be ok. I suppose you cant adjust timing with the stock one but does it run fine??? I have the same set up in my engine and I have the stock cam gears. Quote Link to comment Share on other sites More sharing options...
adi2009 Posted March 17, 2009 Author Share Posted March 17, 2009 Oh ok. so no adjustments made to timing then? Quote Link to comment Share on other sites More sharing options...
bondango Posted March 17, 2009 Share Posted March 17, 2009 (edited) Yes they need to be setup, no real point in fitting an aftermarket Cam unless its timed as per manufacturers Timing Card Spec or you could end up loosing power - and the only way to adjust the timing is using Adjustable gears. Edited March 17, 2009 by bondango Spelling (see edit history) Quote Link to comment Share on other sites More sharing options...
jevansio Posted March 17, 2009 Share Posted March 17, 2009 Mine are currently zero'd out (is this the same as fitting them to stock gears?), how much benefit is there to tweaking these? Anyone have any data from mapping sessions? Quote Link to comment Share on other sites More sharing options...
bondango Posted March 17, 2009 Share Posted March 17, 2009 Just to show how important it is to setup cams, heres the important Timing data for HKS exhaust Cams The Info indicates when the Valve will open to 1mm of lift Exhaust Cam size---- opens to 1mm (before bottom dead centre) 256 ---- 41 degrees 264 ---- 46 Degs 272 ---- 50 degs 280 ---- 55 degs Now assuming a Stock cam is around 38 degrees, if your running a 264 exhaust cam which is set as stock, then your exhaust cam timing is 8 degrees out Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 17, 2009 Share Posted March 17, 2009 http://www.mkivsupra.net/vbb/showthread.php?t=166672&page=2&highlight=cam+timing post number 59 may help. Quote Link to comment Share on other sites More sharing options...
Kev.O Posted March 17, 2009 Share Posted March 17, 2009 Yes they need to be setup, no real point in fitting an aftermarket Cam unless its timed as per manufacturers Timing Card Spec or you could end up lossing power - and the only was to adjust the timing is using Adjustable gears. That's interesting. I should look at investing in a set of these in this case Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 17, 2009 Share Posted March 17, 2009 Bear in mind that stock cams may well be off from the ideal setting just due to production tolerances. A skimmed head or block WILL need adjustable cam pulleys to get the timing spot on though, as the timing belt geo has changed. How spot on you need it is down to how much you want to spend and how perfect your ambitions. Quote Link to comment Share on other sites More sharing options...
Kev.O Posted March 17, 2009 Share Posted March 17, 2009 Bear in mind that stock cams may well be off from the ideal setting just due to production tolerances. A skimmed head or block WILL need adjustable cam pulleys to get the timing spot on though, as the timing belt geo has changed. How spot on you need it is down to how much you want to spend and how perfect your ambitions. Chris which brand would you recommend I go for, as you fitted the HKS 264's I bought Quote Link to comment Share on other sites More sharing options...
bondango Posted March 17, 2009 Share Posted March 17, 2009 A skimmed head or block WILL need adjustable cam pulleys to get the timing spot on though, as the timing belt geo has changed. And something thats often overlooked Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 17, 2009 Share Posted March 17, 2009 Any, they are all much of a muchness. They are nice to have, but only as good as the care taken in setting them up. Don't think they'll find you another 50 BHP though Quote Link to comment Share on other sites More sharing options...
Kev.O Posted March 17, 2009 Share Posted March 17, 2009 Any, they are all much of a muchness. They are nice to have, but only as good as the care taken in setting them up. Don't think they'll find you another 50 BHP though It means I'll have to remove my chrome stock ones It's not the bhp increase I'm looking for. I just don't see the point in having aftermarket cams if they're not set up properly. I'll have a look around and I'll order some soon. Thanks for your help guys Quote Link to comment Share on other sites More sharing options...
Nic Posted March 17, 2009 Share Posted March 17, 2009 Chris which brand would you recommend I go for, as you fitted the HKS 264's I bought JUN pulleys would be my choice. http://img8.imageshack.us/img8/4995/juncamgears.jpg Quote Link to comment Share on other sites More sharing options...
Kev.O Posted March 17, 2009 Share Posted March 17, 2009 Sounds good. The purple on the HKS would ruin my engine bay colour scheme Can you PM me a delivered price and rough ETA please Nic. Thanks. Quote Link to comment Share on other sites More sharing options...
adi2009 Posted March 18, 2009 Author Share Posted March 18, 2009 I ve come across threads such as this where people seem to get the best power on HKS cams at stock position. Quote Link to comment Share on other sites More sharing options...
Ian C Posted March 19, 2009 Share Posted March 19, 2009 What sort of gear do people use to time their cams up? Seems like there is a myriad of stuff out there but a lot of it is for pushrod engines and you have to have access to the front and back of the crank, which is a tad impractical if you're just testing different cam degree settings... Quote Link to comment Share on other sites More sharing options...
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