OlderThanMe Posted June 12, 2006 Share Posted June 12, 2006 The previous owner of my car specifically said that there was a new high performance cam in the engine...I just removed my valve cover and saw this: on the other side it says "Japan" and "B" "B" is inbetween the lobes of cyl #5 "Japan" and "E30" are on opposite sides between cylinders 4 and 5 this is the only thing I could find about a cam with this stamp is: http://forums.hybridz.org/showthread.php?t=108497&highlight=e30+cam but that does not help much since that is on an L20 motor. the head is an E88 with an E46 intake and roundtops. Is this the stock cam, reground(possible), or off another model Z? the cam does not feel that bad. Very little wear. Quote Link to comment Share on other sites More sharing options...
piper5177 Posted June 12, 2006 Share Posted June 12, 2006 http://www.zcar.com/forums/read.php?f=1&i=596665&t=596665 That is the stock cam in the E88 and every other S30 head, so it could be a re-grind or the stock cam. The only way to know is to measure it or pull off the timing sprocket, there will be a letter stamped on the end of the cam. Sould be a C stamped on there for the early E88 cam. Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted June 12, 2006 Author Share Posted June 12, 2006 hmm...guessing it is a regrind because with the way it runs there is NO way it could be stock...just look at my videos...Thanks for the info piper. looks like your Z is built good! nice! Quote Link to comment Share on other sites More sharing options...
piper5177 Posted June 12, 2006 Share Posted June 12, 2006 If it's the cam from the E31 head, the "A" cam, it will have a rough idle too. Thanks for the compliment, I just got my Konig Rewinds on yesterday, looks good. Have to update my sig. Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted June 12, 2006 Author Share Posted June 12, 2006 I was thinking it was one of the MSA cams and wanted to check if it was one of the cams that has lobes burn off but the lobes all seem fine. One of the lobes has the swipe go right to the edge of the lobe though. time to get a better cam. How would I measure the cam? I have seen the way of using some sort of micrometer but I don't have one. Maybe time to do a zxt swap... Quote Link to comment Share on other sites More sharing options...
racerx260 Posted June 13, 2006 Share Posted June 13, 2006 I beleave the id letter is stamped on the rear end of the cam toward the fire wall. you'll need a mirror Quote Link to comment Share on other sites More sharing options...
piper5177 Posted June 13, 2006 Share Posted June 13, 2006 racer x260 is right, the stamp is on the opposite end of the sprocket toward the firewall. You can see it on the back side of the journal race. Oh well, I knew it was on one of the ends...didn't remember which one. Quote Link to comment Share on other sites More sharing options...
Cyind Posted June 13, 2006 Share Posted June 13, 2006 I don't know if Blue post here but he has all the details on his Tech Site http://www.atlanticz.ca/zclub/techtips/cam/index.htm Quote Link to comment Share on other sites More sharing options...
piper5177 Posted June 13, 2006 Share Posted June 13, 2006 I linked to one of his post up above ^ Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted June 13, 2006 Author Share Posted June 13, 2006 The "C" stamp cam is a Nismo cam, It is listed as a "high performance cam". The Nissan part # is13001-N3626. The lift and duration is:.434"/256 degrees I just checked the cam and it has the "C" on the back. The above quote states the "C" grind as a high performance cam...so is it stock or is it not? Quote Link to comment Share on other sites More sharing options...
katman Posted June 13, 2006 Share Posted June 13, 2006 The letters stamped on the back of Nissan cams mean nothing, other than A's are generally found in L24's and L28's and C's are sometimes found in L26's. Along with about every other letter of the alphabet. And there's about 12 variations on the "A" grind and C's were sometimes on late L24's. You have to "Cam Doctor" it to know for sure. Quote Link to comment Share on other sites More sharing options...
piper5177 Posted June 13, 2006 Share Posted June 13, 2006 Anyhow, you have a stock Nissan cam...better steel than you are going to get from CFC. So if you are going to get a cam, have that one reground to your specs by Delta. Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted June 13, 2006 Share Posted June 13, 2006 Anyhow, you have a stock Nissan cam...better steel than you are going to get from CFC. So if you are going to get a cam, have that one reground to your specs by Delta. Markings to avoid are CWC, these include the MSA Schneider cams. This crappier metal cores used cause these cams to sometimes go flat, but it seems to be luck of the draw. I believe the 260z camshaft is the most aggressive of the stock cam shafts, but it still isn't that "big". Mario Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted June 13, 2006 Author Share Posted June 13, 2006 thanks guys. I may be able to get a regrind next summer if not this summer. I was also looking at the isky cams... I have a question though. If you want more lift on a cam and you get it reground wouldn't that reduce the amount of lift? Or do they weld the lobes larger before machining? that is something I have been wondering. Quote Link to comment Share on other sites More sharing options...
Guest 73Turbo240z Posted June 13, 2006 Share Posted June 13, 2006 olderthanme, i just watched your video... whats up with it always raining when your driving lol? you've got way bigger kohona's than me, my Z stays right were it is the second water starts falling... Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted June 14, 2006 Author Share Posted June 14, 2006 I don't know...even my video on the tail of the dragon it is raining...go figure. I do have that one video when it is not raining...plus I won't break traction when it rains...not fun getting sideways going around a turn at high speeds... here is my one video when it is not raining...and my clutch was worn in...and when the car was not brocken down... I just don't think it is possible for a stock spec cam to break away 225 width tires at 3500 rpms like at the stop sign...I wasn't even trying to break loose. Video Hosting - Upload Video - Video Sharing Quote Link to comment Share on other sites More sharing options...
piper5177 Posted June 14, 2006 Share Posted June 14, 2006 They don't weld on more metal, there is enough metal on the cam to grind it to new specs (in most cases). You make up for the lost metal with the adjusters on the tappets. Isky uses CWC billits for their cores too so they are going to be softer than a Nissan "Japan" cam. Quote Link to comment Share on other sites More sharing options...
olie05 Posted July 1, 2006 Share Posted July 1, 2006 I have a question though. If you want more lift on a cam and you get it reground wouldn't that reduce the amount of lift? Or do they weld the lobes larger before machining? that is something I have been wondering. They grind away the base circles and leave the height of the lobe the same. There is a picture of rebello's cams that has the base circles ground so much that they are flush with the "rough" part of the cam. I think Braap put it up here. found it: So did you ever look at the back of the cam to see if it was stock or not? Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted July 3, 2006 Administrators Share Posted July 3, 2006 Yes, that is a .520” lift cam that we offer, ground by Rebello. That cam is for a Hybrid member, (Silent), and is going in custom N-47 that we are building for his radical stroker street Z. He has been talking about Nitrous as well… I might be installing that same grind into our race car over the winter as well. It would make for a nice mild-moderate race cam. Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted July 3, 2006 Author Share Posted July 3, 2006 all mine has on the back is the "C" stamping. I am looking at getting mine reground next summer and to build the head as well as the electromotive DIS ignition. That cam may be just a little much for my car but who knows? maybe... Quote Link to comment Share on other sites More sharing options...
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