Ella Posted March 15, 2009 Report Share Posted March 15, 2009 hey guys, i want to find out what the cam in my 5k that i blew up on friday is... I'm kind of convinced by it shitting another (practically new) lifter before i blew it up, that it might be a solid cam, and if so I'm gonna stick the f@$ker in my 4K. which is horridly slow after the high comp, cammed 5k :laff: whats the best way to tell, or if you can't just measure it, who do i take it to (prefer northside brisbane) to get it measured up. cheers kents :lolcry: Luke/ella/kent Quote Link to comment Share on other sites More sharing options...
styler Posted March 15, 2009 Report Share Posted March 15, 2009 take it to a camshaft shop and they will run it on a cam grind machine like camdoctor or the likes... you can't tell exactly by eye especially with rocker ratios etc, only a rough guess by camshaft lobe. Quote Link to comment Share on other sites More sharing options...
Felix Posted March 16, 2009 Report Share Posted March 16, 2009 After they regrind a cam, they usually stamp the grind number on it. If your cam keeps trashing lifters one of the lobes is probably screwed. When the cam originally went in were the lifters refaced/replaced? Quote Link to comment Share on other sites More sharing options...
philbey Posted March 16, 2009 Report Share Posted March 16, 2009 You can do it fairly easily. Get a dial gauge with magnetic base and a protractor and an engine block - slide the cam most of the way into the block and left the first 2 lobes poking out - Stick protractor to the front of the cam - use the Magnetic base to mount the dial gauge assy, with the tip of the probe at a Normal to the cam profile. - Zero the gauge at on the root diameter of the lobe. If you don't know where that is, you need to read up. - Rotate the cam through its motions using the protractor to increment. At every 5 degrees take a measurement off your dial gauge - The highest point of the lobe might not fall on your 5degree increments, so make not of where that point is - Take your data and plot them in a graph in Excel. You need to consider the true profile of your curve as well because the tip of your dial gauge will give incorrect readings depending on the radius. You just need to offset the value. Sounds tricky but it is quite easy to do. You do both profiles, making sure you measure with the same 0 degree point, and when you plot it you can see your duration and overlap etc. Quote Link to comment Share on other sites More sharing options...
Ella Posted March 16, 2009 Author Report Share Posted March 16, 2009 hrmm so basically take it to a cam shop? LOL whos near me in brisbane who does a half decent job? (northside yo) Quote Link to comment Share on other sites More sharing options...
TRD ke70 Posted March 16, 2009 Report Share Posted March 16, 2009 does this engine have double valve springs? this is quite common to shit lifters if the spring pressure is too hi. Quote Link to comment Share on other sites More sharing options...
Ella Posted March 17, 2009 Author Report Share Posted March 17, 2009 no but I'm told they are stronger ones than stock, either way the 5ks spun a bearing now so I'm looking to pension the cam for my 4k LOL Quote Link to comment Share on other sites More sharing options...
philbey Posted March 28, 2009 Report Share Posted March 28, 2009 Yeh you could take it to a cam shop I suppose, but where's the fun in getting someone else to do it! Only took me 1/2 an hour and cost me nothin! Quote Link to comment Share on other sites More sharing options...
!!!! holden2100!!!! Posted April 6, 2009 Report Share Posted April 6, 2009 hey guys just bump in here for a question have any of use heard or thought about putting gsx1100 carbies on a 4k???? (mite have to get them tuned proply tho) :dance: and does any one now what the best cam profile is for a 4k with 60thou oversized pistons and head shaved 40thou /ported and polished I'm very new when it comes to cams? plz help :party: Quote Link to comment Share on other sites More sharing options...
philbey Posted April 7, 2009 Report Share Posted April 7, 2009 Dude, do you really need to post this question in every vaguely related topic? Quote Link to comment Share on other sites More sharing options...
!!!! holden2100!!!! Posted April 12, 2009 Report Share Posted April 12, 2009 Dude, do you really need to post this question in every vaguely related topic? hey mate I'm only trying to get some help!!! CAUSE NO ONE IS ANSWERING MY PROBLEMS OK MATE ILL LEAVE THIS FORUM !!!!!!!!!!!!!!!!!!!!!!BOSS!!!!!!!!!!!!!!!!!!!! :D Quote Link to comment Share on other sites More sharing options...
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