brian crower 272s who running them?

[1gDSM4g63]

I currently as running HKS 264/272 but I feel like a need 272 or 280. I know that the 264, 272, 280 from different manufacturers don't mean squat. Can anyone give me a more detail info on 272/272 or 280/280 BC vs. HKS 264/272?

 

[Tarantula]

I have BC272's and my car idles fine. Rough, but never stalled once. I do have dsmlink, however.

What RPM do they start making power? I know FP2 makes power at 4K. I have heard that these BC 272's make power at 3.5K

 

[Black95TSIawd]

What RPM do they start making power? I know FP2 makes power at 4K. I have heard that these BC 272's make power at 3.5K

Well I have a standard big 16g(not evoIII) so spool-up is pretty quick regardless. However, the butt dyno is telling me the power kicks in real nice in the upper 3k range. After 3800RPM the car pulls like a raped ape. I have a built 2g head( nice port job, stock sized valves), 1g t-body, and a stock 2g intake mani and ive gotten 39.5lbs/min with this turbo. Airflow via dsmlink doesn't begin to drop off untill 7400rpm. Remember, I don't have an evoIII 16g with its wonderful compressor wheel, just a standard big 16g. I say the cams are doing a pretty fine job.

 

[daren_p]

I currently as running HKS 264/272 but I feel like a need 272 or 280. I know that the 264, 272, 280 from different manufacturers don't mean squat. Can anyone give me a more detail info on 272/272 or 280/280 BC vs. HKS 264/272?

I can't recall HKS duration specs but their lift on their 272's will be slightly more then the BC 272's (& slightly less then the FP2's). The BC 272 & FP2's have the same duration. The 272's will give you more top end power & lose some in the mid/low compared to your 264/272 combo. Looks like your running the HX40, so that 264 will be really hurting your top end, if thats what your after. Swapping to a HKS 272 intake will net you the same results as the BC 272's (actually I believe slightly more power & the FP2's will make the most top end power of the three, while losing abit more on the bottom end)

The BC280 are much more agressive & will lose alot in the low/mid range but will make up for it in the top end. If you don't have an aftermarket SMIM & aren't reving well past the stock redline, these probably aren't a good choice. A 272 combo will pull well to a 8000-8500 redline on a properly supported car.

 

[daren_p]

Well I have a standard big 16g(not evoIII) so spool-up is pretty quick regardless. However, the butt dyno is telling me the power kicks in real nice in the upper 3k range. After 3800RPM the car pulls like a raped ape. I have a built 2g head( nice port job, stock sized valves), 1g t-body, and a stock 2g intake mani and ive gotten 39.5lbs/min with this turbo. Airflow via dsmlink doesn't begin to drop off untill 7400rpm. Remember, I don't have an evoIII 16g with its wonderful compressor wheel, just a standard big 16g. I say the cams are doing a pretty fine job.

Your seeing some nice flow numbers out of the 16g, was just wondering what boost you were running to see these numbers? Also was wondering if you had any DSMLink files you could send my way, so I could take a look see.

 

[Tarantula]

Well I have a standard big 16g(not evoIII) so spool-up is pretty quick regardless. However, the butt dyno is telling me the power kicks in real nice in the upper 3k range. After 3800RPM the car pulls like a raped ape. I have a built 2g head( nice port job, stock sized valves), 1g t-body, and a stock 2g intake mani and ive gotten 39.5lbs/min with this turbo. Airflow via dsmlink doesn't begin to drop off untill 7400rpm. Remember, I don't have an evoIII 16g with its wonderful compressor wheel, just a standard big 16g. I say the cams are doing a pretty fine job.

Now thats what I wanted to hear. I do have an Evo 3 16G with 1G TB and stock head and have to say you are pullin nice numbers. I see around 35-36lbs/min at 20-21 psi with my setup (Stock cams) (I run E85 mix). I'm upgrading to a FP3052 soon and want to mate these cams to that turbo. I'll probably see 3.5K spoolup with the ball bearing turbo possibly.

Does it feel sluggish around town cruising? llike on hills?

 

[Black95TSIawd]

Your seeing some nice flow numbers out of the 16g, was just wondering what boost you were running to see these numbers? Also was wondering if you had any DSMLink files you could send my way, so I could take a look see.

At 19.5psi, I've seen 36lbs/min. At 23psi, I saw the 39.5lbs/min. I was racing at the track that night and didn't revv it further than 7k. I later on found out through some street tuning that the MAS signal doesn't stop counting up until 7400 rpm. Unfortunately, my laptop for some reason doesn't keep dsmlink .dat files saved for a long time. It actually deletes them over a few days period and I lost all of my tuning files. Can't seem to figure out why. I'll search through some threads and see if I posted that 23psi log anywhere and then I'll send it your way.


Did I notice a more sluggish feeling after the cam install?...sure. But, its still just a 16g so lag is minimal. I'm looking forward to upgrading to a "big" turbo later this winter and see exactly how far I can push this 2g head. If they evo guys can do 1000whp with the small ports in their head, then I don't honestly see a restriction.

 

[1gDSM4g63]

I can't recall HKS duration specs but their lift on their 272's will be slightly more then the BC 272's (& slightly less then the FP2's). The BC 272 & FP2's have the same duration. The 272's will give you more top end power & lose some in the mid/low compared to your 264/272 combo. Looks like your running the HX40, so that 264 will be really hurting your top end, if thats what your after. Swapping to a HKS 272 intake will net you the same results as the BC 272's (actually I believe slightly more power & the FP2's will make the most top end power of the three, while losing abit more on the bottom end)

The BC280 are much more agressive & will lose alot in the low/mid range but will make up for it in the top end. If you don't have an aftermarket SMIM & aren't reving well past the stock redline, these probably aren't a good choice. A 272 combo will pull well to a 8000-8500 redline on a properly supported car.

Daren_p, I've look at fp2 but now i'm considering fp2x. Are you familiar with the fp2x? I want to know what power bands I could see. Thanks.