luvemfast Posted December 11, 2009 Posted December 11, 2009 Does anyone have a spare 240Z "A" grind cam laying around? Have been told that putting one of these cams in with the triple Mikuni's will be benefitial. PM me or email simon.ray@optusnet.com.au or call 0400 395 898 If you can help. Thanks, Simon Quote
C.A.R. Posted December 11, 2009 Posted December 11, 2009 By who? You will get SFA difference out of a A Grind cam, Simon. God I hate some of these myths... Quote
Riceburner Posted December 11, 2009 Posted December 11, 2009 Simon, I run a 72deg cam, It seems to 'come in' at around 3000rpm. That suits me fine, good for street and means I don't have to rev its tits off on the track also. I only had su's when first fitted but seemed to make a noticeable difference. I have info on the correct lash pad thickness and where to dial the camshaft in at, if you want it just pm me. Quote
luvemfast Posted December 11, 2009 Author Posted December 11, 2009 By who? You will get SFA difference out of a A Grind cam, Simon. God I hate some of these myths... Lou M Until I do some work to the internals, an "A" grind will suffice. From what I believe, it will open up the top end slightly. Thats all I'm after at the moment. Once a rebuild is done, a 74° cam will more than likely go in. Quote
luvemfast Posted December 14, 2009 Author Posted December 14, 2009 C'mon folks, are you telling me that with all the goodies between everyone that there is not a single A grind cam amongst us? Help me out of a pickle....... Quote
260Coupe Posted December 14, 2009 Posted December 14, 2009 Simon If you have an L28 C grind the specs are identicle to the 240 A grind so no difference. The A/C has better duration than the F grind that was also installed in the L28e's...............check which cam you already have. Lou's recommendation was obviously based assuming you had an F ...and on testing cams in my engine on the engine dyno......not anecdotal evidence..........the stock 240 A grind was found to be superior to the stock C and F grind. (more duration and intake lift) The stock A grind has huge torgue below 4500 and makes peak power at only 5500 so it is ideal for road use as the power is always there ......not so great for track as it drops off quickly after 5500-5800 BTW I got my spare A grind from Lindsay at the Z Shop.............he may be worth a try ? I have since reground it to a 70 deg Roadster profile which I am yet to test...this should move peak power to around 6200 Alan Quote
luvemfast Posted December 14, 2009 Author Posted December 14, 2009 Thanks for the info Alan. I'll check this weekend to see which cam I have. No offence Lurch, but sometimes sharing info is more useful than hearing ones opinion when it comes to learning. Quote
WogsRus Posted December 15, 2009 Posted December 15, 2009 I have an F L28 cam, a 260z cam can't remeber cast number, and a late L24 out of a skyline and an L24E cam aswell. LOL. However it woudl be cheper to get a new regrind cam, thay are only $160. Quote
C.A.R. Posted December 15, 2009 Posted December 15, 2009 None taken Simon It's just that for all the effort you'd go to in obtaining a A cam & then changing it, I would have thought it'd be easier & just to get one reground to a more agressive profile in the first place... Quote
pauly_adams Posted December 15, 2009 Posted December 15, 2009 ill have a look for you if i have one i know that i have one from my 260z engine and i may have one from my L28 if my L28 has one i may be able to help you out. also sorry to jack the thread a little but has anyone got any info on a B4 grind cam ??? cheers pauly Quote
260Coupe Posted December 15, 2009 Posted December 15, 2009 None taken Simon It's just that for all the effort you'd go to in obtaining a A cam & then changing it, I would have thought it'd be easier & just to get one reground to a more agressive profile in the first place... I think where Simon is going as that an A grind is the best starting point for a regrind as it has the largest base circle dia and highest lift and can be reground in stages. Rather than install a 72 deg straight up and find that you have lost all you low down mumbo and you need to rev it beyond 500 all the time to get any performance. Simon............what are you aiming for? something that is tractable around town or a flat out race cam? Quote
luvemfast Posted December 15, 2009 Author Posted December 15, 2009 Pretty much on the head Alan. Good base to start from. Simon............what are you aiming for? something that is tractable around town or a flat out race cam? As my car is not a race car, but used for motorsport, I'm after an all rounder. Something that is nice to drive, but has some life and excitement in it with "spirited" driving. i may have one from my L28 if my L28 has one i may be able to help you out. Cheers Quote
luvemfast Posted December 17, 2009 Author Posted December 17, 2009 OK, Stupid question. Where is the code stamped? Is it on the firewall side? If it is, I actually think I have an A code on a spare head. ......... Quote
Moderators Zedman240® Posted December 17, 2009 Moderators Posted December 17, 2009 Yep Simon, on the end that's next to the firewall...or opposite end of the cam gear. Quote
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