Brian Crower 280's

[4wd-Eclipse]

Martin, is Manley valve springs and TI retainers suitable for BC 280 cams?
I may replace my 264/272 HKS cams.

 

[2gAWDTalon]

Tom if you will really build for an 8500 RPM setup then go with the 280's. We have built some EVO's on the 280's for that very reason and it's right up top that you really see them shine. Just be sure you have a tuning tool because you need to tune for the idle.

prostreetdsmx1, Thank you for adding your experiance to this thread. I am up grading my WebCams to BC's. First of all, my Webs idle pretty bumpy. My buddy told me to go 280's and I was worried so I called Brain, he of coarse said 280's with valvetrain. My car is not a daily driver, but I try to drive it everyday (if that makes sence). I am really worried about the idle... like I said my webs are rough and that is fine, I just want to know how rough they will be with the 280's. I will be haveing his valvetrain kit installed the same time my head is o-ringed, so I will rev it untill my turbo runs out of steam. I figured with your experiance you could help me find a answer to how rough they idle. I searched but there are no real good threads from users of the 280's, just a bunch of speculation...

 

[fwdeclipse]

Martin, while you're on here, I'm looking to rebuild my head to rev out to 8/8.5k with BC's springs/retainers/valves and will be running a BB5031 turbo @ 24-26 psi next season ( of course with alky). Do you recommend the 272's or 280s? I do not mind a crappy idle at all, seeing how I've only driving my talon for 3k miles the entirety of 2006.

Im looking into doing the same thing just with a different turbo. I wanted to know if 280s would be better also. I am starting to lean that direction.

 

[JayRolla]

I you are going high rev, and with a large turbo that can breath that high than yea the 280's will be great.

 

[2gAWDTalon]

I you are going high rev, and with a large turbo that can breath that high than yea the 280's will be great.

Thanks for the input there... yes 280's will be great if you rev high and you dont outflow your turbo... my question is how rough they will idle? Now dont reply and say"rough", that is obivous. I was wondering how rough? Like I have webs and they idle pretty rough...


I wonder, will the BC280's idle as rough as these down below? This is from the Comp100400 thread...
http://s18.photobucket.com/albums/b148/nanokpsi/?action=view&current=DSCF0747.flv

 

[GVR4592]

If you degree them properly and play with the tuning a bit, you can get them to idle pretty well. Which Web cams do you have?

 

[2gAWDTalon]

I have the street grind web (546/547). I picked up 4-5 lbs/min with the Webs logged via DSMLink... so they were pretty good, but power starts falling off at 7500 and they are done at 8000. I am sending Brian a paypal now, FCK IT, I hope I like the 280's.


Edit: To be honest, I installed a Magnus and the Webs at the same time and picked up a SOLID 8-9lbs/min. between the two, so I guess at least 4 was from the cams. Mods in profile are mostly up to date.

I have searched all the forums, DSMLink, Tuners, Talk, ORLDSM and cant find any threads where people that have the 280's talk about idle.

 

[GVR4592]

I'm sure you will, the idle won't be that bad.

 

[2gAWDTalon]

I will post back in this thread for future searchers!

 

[JayRolla]

My mechanic is running FP3x's and he runs his idle around 1200 I think and its not that bad.

 

[2gAWDTalon]

I will let you know, I will try to post a sound clip like that guy did with the comp 100400's, that was cool of him. I will also be looging the differance in DSMLink, I have logs of stock cams to my Webs now and will compare them closley with the BC's. Brian told me he has seen poeple pick up 40 hp switching from 272's to 280's with monster setups. I cant wait!

JayRolla, I have a few friends running FP3's. Def. bumpy but not that bad, totally streetable! Nothing like that sound clip of the Comp 100400's

 

[my98GST]

do the BC 280's lope as hard as the HKS'? If so I'm gettin some

 

[my98GST]

Errrrr.... :edit: Profile updated! Mods in profile

 

[prostreetdsmx1]

do the BC 280's lope as hard as the HKS'? If so I'm gettin some

they are engineered not too. The idle is still lumpy but nothing like the HKS 280's. This is a good thing though.

 

[turbo90gsx]

Im nearing the install of my BC 280's. My only concern that I'm wondering about is if the Crower springs and ti retainers have enought seat pressure for the 280's? I plan on reving to 8500-9000k. I know evileage runs those springs on hks's 272's, just curious.

 

[my98GST]

If you were going to run 8500-9000 I would look in to some dual springs... I talked to Crower when I was building my 1g head and they suggested I only go 8200 safely 8500 max

 

[blcknspo0ln]

Im nearing the install of my BC 280's. My only concern that I'm wondering about is if the Crower springs and ti retainers have enought seat pressure for the 280's? I plan on reving to 8500-9000k. I know evileage runs those springs on hks's 272's, just curious.

I spoke to Keith @ turbotrix and he recommended getting the springs shimmed to raise the seat pressure.

Quoted verbatim:

Go with the JM fab intake. I've had both the JM and the Magnus and I like the JM a lot better. It holds the hp/torque a little better over 7500rpm. I used to rev my car to 8500rpm on the stock valves/springs/retainers. I did this for a few years and over 250+ passes. I was constantly sitting on the rev limiter in first gear. I would probably hit the limiter 2 or 3 times before shifting to 2nd gear. I ran 140mph on the bone stock head in a 3100lb car. The stock head works great. A few years back i put a head on with oversized valves and HKS springs. It would misfire over 7k rpm. Put the stock head back on and it was fine. Ran it like that for years. The HKS springs actually had less seat pressure than the stock valve springs and it was causing the valves to float at high RPM. I lost half a season to this issue and I know of someone else who wasted almost a season and a half. IF your going to go the valve/spring/retainer route, I recommend going with dual valve springs. If you want to run the single's then you should definitly shim them to bring up the seat pressure. I would just get the head freshened up and you can shim the stock valve springs if you are worried about float. I ran the stock valve springs without shims and I was fine. My head was pulled off a junk car and all I did was have it decked. If you bent some valves then you can replace them with stainless valves, its only a few dollars more a valve.

 

[2gAWDTalon]

Im nearing the install of my BC 280's. My only concern that I'm wondering about is if the Crower springs and ti retainers have enought seat pressure for the 280's? I plan on reving to 8500-9000k. I know evileage runs those springs on hks's 272's, just curious.

Call BC! Asking on a Forum will not give you solid info. I bought the valve springs from BC and Brian told me they have been spun past 10K. That doesn't means I would spin them that high, but I will fell ok about 8500. Different cams have different requirement in regards to spring pressure.

 

[91-gsx]

I was looking for some cams that would make power to 8000rpm, maybe 8500rpm. These 280/280 degree cams are looking very good at that $305 price tag. The only thing is that I am on the stock valvetrain and I know they are good for revving to 8500 on hks 272's and comp 200's. Do you guys think that these cams are way too much for a stock valvetrain shifting at 8000rpm?
thanks for the help

 

[my98GST]

Its your car, do what ever you like with it.... They woudln't recommend changing to stiffer springs for no reason.. The 280 is a more agressive cam than the 272 so keep that in mind.

 

[4WARND]

I will add a little info on the springs. When trying to decide my latest cam combo I did some research on springs. I ended up going with the HKS 280's ( BC's were not out yet )and the Manley single spring. The Manley has the highest seat pressure of any single spring. I have spun up to 8900 Rpm with no problems, and plan on going upwards of 9500 next season.

 

[2gAWDTalon]

4WARND - How do your HKS 280's idle? How is the power band? What cams did you switch from and what kind of gains did you see. Thanks, I have been searching for some real world experience. Does it feel as if the power is dropping off at 8900 at all or are they still pulling strong?

 

[BlackHawkAWD91]

Something else you all might want to think about, HKS cams sell so well because they can be installed and be dead on, known for an easy install without adjustable cam gears. I would think at this price, you should step up and get adjustable cam gears to keep your bases covered and have options later to tweak them in.

Just a thought.

Some music for the ears, HKS 272 intake and exhaust cam clip
http://www.youtube.com/watch?v=OzuLA0DCWQE

 

[4WARND]

4WARND - How do your HKS 280's idle? How is the power band? What cams did you switch from and what kind of gains did you see. Thanks, I have been searching for some real world experience. Does it feel as if the power is dropping off at 8900 at all or are they still pulling strong?

My car idles great, but I have AEM and am using an Accufab throttle body ( Mustang TPS ). I switched from HKS 272's. As for the gain, I changed a BUNCH of things at the same time, so that is difficult to answer. It is still pulling strong at that Rpm. In fact, I will be changing the cal file to allow 10k next season. The file only goes up to 9k right now, which is why I was only reving to 8900.

 

[my98GST]

Something else you all might want to think about, HKS cams sell so well because they can be installed and be dead on, known for an easy install without adjustable cam gears. I would think at this price, you should step up and get adjustable cam gears to keep your bases covered and have options later to tweak them in.

Just a thought.

Some music for the ears, HKS 272 intake and exhaust cam clip
http://www.youtube.com/watch?v=OzuLA0DCWQE

that makes my PP hard Still sounds nothing like my buddies EVO with the 280's in it.. Dayyyummmmmm

His car could be parked beside my car and not set my car alarm off and my buddies GSX with 272's could be parked beside my car and not set my alarm off, and then Mac got his 280's and as soon as the first lope hits bam it sets my alarm off