[lonestar22]

anyone go them?

https://racingdynamics.com/eStore/in...405290301.html

they also make REAL tunes for the N52 cars as well, not just gas pedal maps

[mike-y]

Hmm, so called "proven performance" without any proof. why don't they supply any dyno sheets for their claims? if they truly understood the N52, they would realize that getting camshafts to work with the N52 is much more difficult than a traditional engine. I doubt you can just drop in a set of cams in this motor and have it run correctly. Then again for $4,300+, i'd hope they've done their R&D, and can provide examples (dynos and video) of cars running with this setup right now. Though something tells me they won't.

And if they developed REAL tunes for this motor, they probably wouldn't need camshafts for a street application.

[lonestar22]

well, its RD Sport.

they are a legit company that makes legit parts for other platforms. im sure they know what their doing. i mean look what they make for the e46 m3

[MOTO69JOE]

So maybe you should just get them and report back to us?

[Classycali]

pricey! At first i was like sweet! but than I saw the 4700 price tag and was like whoa! I like how companies aren't giving up on us n/a guys but they gotta make it cheaper, at prices like that most of us would trade in our n/a's for 335's

[lonestar22]

ill save up and get back to u

[bmwcar]

Originally Posted by Classycali

pricey! At first i was like sweet! but than I saw the 4700 price tag and was like whoa! I like how companies aren't giving up on us n/a guys but they gotta make it cheaper, at prices like that most of us would trade in our n/a's for 335's

definatly too much just for camshafts, you can get n54 engine swap for like 4000 euros, and sell yours for like 2000 )

[DimSum]

4K for "entry-level performance"
what a joke.
4K on an E46 platform can get you blown on a G-POWER kit.

[wareagle900]

7400 rpms seems quite dangerous on a motor that redlines at 6800....

[lonestar22]

Originally Posted by bmwcar

definatly too much just for camshafts, you can get n54 engine swap for like 4000 euros, and sell yours for like 2000 )

its not just cams, theres also exhaust and a tune.

it seems about right if you remember the supersprint full exhaust runs to about 2500

[mbj898]

yeah i would be careful with that, i'm for sure not going to be the first one to try this out.

[wareagle900]

I think you leave well enough alone and not risk the potential disaster of a cam. just my opinion...

[philsteroni]

I always thought cam modding was useless on n52 with the introduction of valvetronic...

[e90pilot]

Originally Posted by philsteroni

I always thought cam modding was useless on n52 with the introduction of valvetronic...

Not entirely true. Valvetronic controls lift, and Vanos controls timing. None control duration. A new cam will add duration and will give Valvetronic and Vanos higher operating ranges. The pricing is a little steep but if it works it'd be worth it. Tuners should really invest in demo cars but they only do it when they do something crazy. If they gave me a discount, I'd drive my car around with stickers to meets and events.

[Alexander]

Gay

/thread

[philsteroni]

Originally Posted by e90pilot

Not entirely true. Valvetronic controls lift, and Vanos controls timing. None control duration. A new cam will add duration and will give Valvetronic and Vanos higher operating ranges. The pricing is a little steep but if it works it'd be worth it. Tuners should really invest in demo cars but they only do it when they do something crazy. If they gave me a discount, I'd drive my car around with stickers to meets and events.

Does'nt lift and timing basically mean "duration"(of an open valve).

[BadBoostedBMWM3]

Hmm, I am definitely interested in some reviews.

[e90pilot]

Originally Posted by philsteroni

Does'nt lift and timing basically mean "duration"(of an open valve).

Nope. Lift is how much the opens (usually measured in mm I think) and duration is how long it stays open (degrees of roation). Timing is when it starts to open. The duration is fixed. Wider cam lobes are the only way to increase duration.

[wareagle900]

this could be good theoretically... but, your warranty is most definitely gone completely on all engine and drivetrain related parts with this... and if you have no warranty i would say you are dumb to put this in due to a probable increase in the likelihood of engine damage.

im done with this thread now, sorry to be so negative about it.

[mike-y]

technically, valvetronic increases duration as it increases lift. the cam profile itself is static, but the valvetronic function is what makes it variable. But changing the cams would allow you to have a profile that increases both lift and duration. This could give you more power, but from what I can tell, no one is even close to the limits of valvetronic tuning yet, or have measured the min and max lift/duration profile of the stock cams working within the current valvetronic system.


it's quite possible the current system can generate much more power without even touching the cams.

[e90pilot]

Originally Posted by mike-y

technically, valvetronic increases duration as it increases lift. the cam profile itself is static, but the valvetronic function is what makes it variable. But changing the cams would allow you to have a profile that increases both lift and duration. This could give you more power, but from what I can tell, no one is even close to the limits of valvetronic tuning yet, or have measured the min and max lift/duration profile of the stock cams working within the current valvetronic system.


it's quite possible the current system can generate much more power without even touching the cams.

The current system for sure can generate more power, but your duration is capped. I think the current system can increase lift to the point where the valves hit the pistons. But once the cam rolls past the valvetronic rocker the valve will close. With cams for the N52 you probably don't need to increase lift, just duration. Yes, valvetronic does increase duration a little as it increases lift but you can increase its limits way beyond what it can do in stock form. If these guys did their research and reporgammed the engine map to take advantage of it, this could yeild some good gains not just in peak numbers but all through the power band.

[AlpineSwift]

I'd rather go custom grind from comp cams or something of that nature before I'd spend $4K on these.