R33 0wnerrr Posted March 9, 2010 Share Posted March 9, 2010 Iv got my rb25det s2 r33 and has 650cc inj, bosch pump, dsr430 turbo, fmic, linkg4 etc Was wondering if straight drop in 272deg. 8.4mm lift camshafts are too big for my setup? Iv tried searching...but doesnt quite make sense to me... what deg cams would i want for my setup? because will 272deg make power too late in the rev range? or...? im hopeing for about 275+ at the wheel... thankyou Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/ Share on other sites More sharing options...
frozenwaffles Posted March 10, 2010 Share Posted March 10, 2010 where r u buying these from? they are massive cams! Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5126131 Share on other sites More sharing options...
r33niko Posted March 10, 2010 Share Posted March 10, 2010 where r u buying these from?they are massive cams! +1 big but small lift. Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5126270 Share on other sites More sharing options...
R33 0wnerrr Posted March 10, 2010 Author Share Posted March 10, 2010 (edited) http://dsrturbo.com/index.php?cPath=73 http://dsrturbo.com/product_info.php?cPath...products_id=108 I know there massive...but would they do anything being that big? Edited March 10, 2010 by R33 0wnerrr Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5126339 Share on other sites More sharing options...
GTScotT Posted March 10, 2010 Share Posted March 10, 2010 if u get gears and dial them in, you can definately get them to work for you.. the secret to anything good is R n D, and I cant say I have much faith in how much research OR development has gone into those.. never heard of em to be honest. thats not to say their shit, try find someone else using them and go from their results. Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5126845 Share on other sites More sharing options...
Mr. Untouchable Posted March 10, 2010 Share Posted March 10, 2010 If your hoping for 275, stock cams will be fine. Camtech do 272/9mm lift for 25's. but I really think its pointless at that power level. Its been said time and time again stock cams have worked well at 370kw's + money could be spent better else where on the car! Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5126876 Share on other sites More sharing options...
R33 0wnerrr Posted March 10, 2010 Author Share Posted March 10, 2010 If your hoping for 275, stock cams will be fine. Camtech do 272/9mm lift for 25's. but I really think its pointless at that power level. Its been said time and time again stock cams have worked well at 370kw's + money could be spent better else where on the car! Well whats somthing else that could be better spent on the car power wise? i would like some advice! Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5126989 Share on other sites More sharing options...
Dale FZ1 Posted March 10, 2010 Share Posted March 10, 2010 Tuning, keep the thing out of knock and let it live a long life. Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5127072 Share on other sites More sharing options...
wolverine Posted March 10, 2010 Share Posted March 10, 2010 Is the turbo you have specced capable of making the desired power level? Money is best spent getting that right. Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5127144 Share on other sites More sharing options...
r33cruiser Posted March 10, 2010 Share Posted March 10, 2010 you will be fine, dont know about that turbo tho. My mechanic worked on a 25 with 270 tomei cams, sure the had more lift, but his power delivery wasnt too bad. Definitely useable. But that was with a gt35r Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5127303 Share on other sites More sharing options...
meet07 Posted March 11, 2010 Share Posted March 11, 2010 What is the optimal powerband for some 272's?? Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5129158 Share on other sites More sharing options...
R31Nismoid Posted March 11, 2010 Share Posted March 11, 2010 Is the turbo you have specced capable of making the desired power level? Money is best spent getting that right. Looks like a Chinese style 430hp turbo... so highly unlikely it will make 275rwkw. Probably closer to 230-240rwkw with a nice taste of lag. No turbo that costs $450 AUD is going to be nice... I mean the cams just about cost more than the damn turbo... that's just telling you there is something seriously wrong OP - Forget the CAMS, and spend the money on a DECENT turbo. Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5129191 Share on other sites More sharing options...
R33 0wnerrr Posted March 12, 2010 Author Share Posted March 12, 2010 (edited) Looks like a Chinese style 430hp turbo... so highly unlikely it will make 275rwkw.Probably closer to 230-240rwkw with a nice taste of lag. No turbo that costs $450 AUD is going to be nice... I mean the cams just about cost more than the damn turbo... that's just telling you there is something seriously wrong OP - Forget the CAMS, and spend the money on a DECENT turbo. The turbo claims to make 270rwkw on an rb25det...and they have some dynos for it too... i know its still a cheap turbo and a decent turbo is the way to go but i dont have that much to pay for a big pricetag turbo...but i know i shudnt skimp out on somthing so important...but this turbo seems to look like it will do the trick? if what they claim is true.... heres a dyno sheet off there website Edited March 12, 2010 by R33 0wnerrr Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5130112 Share on other sites More sharing options...
R31Nismoid Posted March 12, 2010 Share Posted March 12, 2010 ^ Hub dyno mate, it's not RWKW. So if you spend the CAMS money onto the turbo, a nice decent Garrett or similar, then the car would perform much better in all respects. You'll probably still be shy another $400-500, so perhaps save up that little bit more on top and then do it once you have the cash together. A GT3071 would be what you are after IMO. A nice 260rwkw, would be superb streeter. Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5130122 Share on other sites More sharing options...
75coupe Posted March 12, 2010 Share Posted March 12, 2010 Am I reading that dyno printout right in that its saying you'll get 1800Nm???? Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5130129 Share on other sites More sharing options...
STATUS Posted March 12, 2010 Share Posted March 12, 2010 Am I reading that dyno printout right in that its saying you'll get 1800Nm???? thats reading in tractive effort, it converts to about 420nm Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5130267 Share on other sites More sharing options...
STATUS Posted March 12, 2010 Share Posted March 12, 2010 The turbo claims to make 270rwkw on an rb25det...and they have some dynos for it too... i know its still a cheap turbo and a decent turbo is the way to go but i dont have that much to pay for a big pricetag turbo...but i know i shudnt skimp out on somthing so important...but this turbo seems to look like it will do the trick? if what they claim is true.... heres a dyno sheet off there website Take 10rwkw off that dyno sheet as they are using DIN which is an old correction factor (what the US uses), it should be in SAE J1349 Link to comment https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/#findComment-5130274 Share on other sites More sharing options...
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