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Rb25det 272 Camshafts Too Big?

R33 0wnerrr
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R33 0wnerrr Enthusiast

R33 0wnerrr

Posted
Posted

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

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https://www.sau.com.au/forums/topic/311365-rb25det-272-camshafts-too-big/
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R33 0wnerrr Enthusiast

R33 0wnerrr

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Posted (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 by R33 0wnerrr
GTScotT Grand Master

GTScotT

Posted
Posted

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.

Mr. Untouchable Experienced

Mr. Untouchable

Posted
Posted

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!

R33 0wnerrr Enthusiast

R33 0wnerrr

Posted
  • Author
Posted
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! :P

r33cruiser Grand Master

r33cruiser

Posted
Posted

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

R31Nismoid Grand Master

R31Nismoid

Posted
Posted
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 :P

OP - Forget the CAMS, and spend the money on a DECENT turbo.

R33 0wnerrr Enthusiast

R33 0wnerrr

Posted
  • Author
Posted (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 :laugh:

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

post-63150-1268372319_thumb.jpg

Edited by R33 0wnerrr
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

^ 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.

STATUS Grand Master

STATUS

Posted
Posted
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

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