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Forced Induction Forum
Discuss supercharging, turbocharging and even nitrous and water injection here.

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Old 04-08-2014, 11:25 AM   #1
pokeybritches
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Where should I buy them? I've seen them listed for $1500 on VAC's website. For that price, would I be better off with ZHP cams? I'm only doing 6 psi on a centrifugal kit.


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Old 04-08-2014, 01:38 PM   #2
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Where should I buy them? I've seen them listed for $1500 on VAC's website. For that price, would I be better off with ZHP cams? I'm only doing 6 psi on a centrifugal kit.


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I might have another option for you.

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Old 04-18-2014, 09:33 AM   #3
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I believe you'd want an FI specific cam since its the opposite cams optimized for NA...like the ZHP cams. But with a stage 1 there are other ways to add more power. I wouldn't bother with cams unless you've got an intercooler.
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Old 04-18-2014, 08:18 PM   #4
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buy them in vacmotorsport...... both ESS and Vac use the same SC cams, Schrick


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Old 04-19-2014, 12:29 PM   #5
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I agree the FI cams would be better, but at only 6 psi, I'm wondering if they are worth the extra $600-700 over some new ZHP cams (which have been shown to add around 10 whp, even in FI applications). Used ZHP cams would be even cheaper. I'll likely go with Rob's option.

I move every couple years, and my go-to shop back home was shut down due to the owner's sudden passing. I don't have easy options to quality work that's reasonably priced. Upping the boost would require a custom pulley, custom intercooler mounting and piping, and tuning. Then if something doesn't work right, I am stuck trying to find someone to fix it. It's easier for me to make the car more efficient with what I have. I'm also concerned about the oil pump nut issue, which is worse with more boost. I've just added a JBR lightweight flywheel and Clutchmasters sprung hub clutch, which doesn't help with the vibrations. I'd even considered swapping the kit for an ESS TS2 so that I don't need to run around at high rpm all the time.


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Old 07-18-2016, 12:38 PM   #6
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Bump for an old thread, but this isn't really documented anywhere. I've reached out to ESS for confirmation, but I believe the ESS "FI Cams" are these Schrick part numbers:

0261 E1 481-DV0 - intake, 248 duration, 10.0 lift
0261 A1 561-DV0 - exhaust, 256 duraction, 10.4 lift

The intake cam comes from the M52TU Schrick set, and the exhaust comes from the 272/256 set for the M54.

Currently here is the only reference to confirm my theory:
http://forum.e46fanatics.com/showpos...1&postcount=21
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Old 07-20-2016, 01:57 AM   #7
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261E1481DVO and an 07 etched in before the number, 261A1561DVO with 200 etched before number, and an M after the part number, is what are on the schrick cams I have (248/256)
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Old 07-20-2016, 06:49 AM   #8
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Thanks davew!
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Old 07-20-2016, 04:01 PM   #9
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Anything else you need in regards to these cams? I ask as they are currently sitting on the bench in the garage, but I will be taking them to a cam professional tomorrow to have them assessed for a regrind for solid lifters and maybe a slight change of profile in general.
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Old 07-21-2016, 07:08 AM   #10
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To me the important thing was confirming what cams ESS was calling the "FI Cams", since they dont sell them anymore, and we've confirmed now that these are some hand-picked Schrick cams from the M52TU and M54 application catalog which has the detailed specs. Thank you!
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Old 07-21-2016, 09:07 AM   #11
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I did a custom grind, cost $200. There are plenty of places that do it....

I went 260/268. The SC falls off in the higher rpms, i figured i could get some of that back. Will see shortly.
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Old 07-21-2016, 09:42 AM   #12
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Hi diablorojo,

Do you have a dyno?

I asked about getting my OEM M54 cams re-ground at one of the cam engineering shops in Brisy, they did not want to do it.

Hopefully I can get my 272/256 cams in the next couple of months - limited time at home really slows my hobby down.

What lift are you running on your cams?
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Old 07-21-2016, 01:59 PM   #13
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Cosmos are you going to run 272 intake and 256 exhaust? Most FI cam setups use a higher exhaust duration than intake, since the supercharger (or turbo) is forcing air in but there isn't a corresponding mechanism to "pull" the exhaust out
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Old 07-21-2016, 01:59 PM   #14
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I did a custom grind, cost $200. There are plenty of places that do it....

I went 260/268. The SC falls off in the higher rpms, i figured i could get some of that back. Will see shortly.
Awesome, what PSI are you running now?

I was told that your final specs need to be within 10 degrees duration of the cams your starting with in order to regrind. What cams did you start with?
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Old 07-21-2016, 02:19 PM   #15
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rkneeshaw, you are correct about FI cams have a shorter duration on the intake.

These 272/256 are from a NA car, bought them relatively cheap as I wanted a more aggressive profile then the 248/256.
My only option at the time was to by blanks and regrind - $1500 plus.

I have done a bit of research on FI and bigger NA cams and the results are good.
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Old 07-21-2016, 06:06 PM   #16
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rkneeshaw, you are correct about FI cams have a shorter duration on the intake.

These 272/256 are from a NA car, bought them relatively cheap as I wanted a more aggressive profile then the 248/256.
My only option at the time was to by blanks and regrind - $1500 plus.

I have done a bit of research on FI and bigger NA cams and the results are good.
Hmm, do you still have vanos control with your Haltech ECU? Davcon ran these cams with his TS2+ and although his HP numbers were on par with mine, he was short over 100nm of torque on the same dyno. Obviously his car was not tuned for those cams though.
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Old 07-21-2016, 07:45 PM   #17
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Hmm, do you still have vanos control with your Haltech ECU? Davcon ran these cams with his TS2+ and although his HP numbers were on par with mine, he was short over 100nm of torque on the same dyno. Obviously his car was not tuned for those cams though.
Only intake vanos control.

I will be tuning to these cams, it is essential to tune for major mods.
When I installed my bigger throttle body I lost 15whp, on the re-tune gained back the 15 and added 17.8whp.

Gained 27.8whp with my current exhaust system after a re-tune. (I actually did not loose any hp or tq with this exhaust system but gained more hp and tq with the re-tune)

So, as always, I will do a before and after dyno when the cams are installed and the re-tune.

How is your beast coming along?
What are your plans for the re-grind?

Cheers
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Old 07-22-2016, 01:44 AM   #18
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Only intake vanos control.

I will be tuning to these cams, it is essential to tune for major mods.
When I installed my bigger throttle body I lost 15whp, on the re-tune gained back the 15 and added 17.8whp.

Gained 27.8whp with my current exhaust system after a re-tune. (I actually did not loose any hp or tq with this exhaust system but gained more hp and tq with the re-tune)

So, as always, I will do a before and after dyno when the cams are installed and the re-tune.

How is your beast coming along?
What are your plans for the re-grind?

Cheers
Bottom end is all done, engine should be back in the car this week. But then I have to continue on with accessories, manifolds, drives, etc.

Dropped cams off today, they will be assessed on Tuesday next week, and the cam grinder will advise what options I have. Conversion to solid lifters is definitely possible with the existing 248/256, just need to wait till he measures the cams up (digital dial indicator type setup which maps the cam profile straight to software), and then the final profile will be ground.
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Old 07-22-2016, 04:48 AM   #19
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Bottom end is all done, engine should be back in the car this week. But then I have to continue on with accessories, manifolds, drives, etc.

Dropped cams off today, they will be assessed on Tuesday next week, and the cam grinder will advise what options I have. Conversion to solid lifters is definitely possible with the existing 248/256, just need to wait till he measures the cams up (digital dial indicator type setup which maps the cam profile straight to software), and then the final profile will be ground.
The cams I'm putting in, was hard to find info on so I had them profiled on a similar machine to determine the specs, only cost 30 bucks with the print out of the cams profile.

If the cams don't perform the way I would expect them to perform, then I will get blanks and have them profiled that will achieve better results. As I have been revving the car to 7,800 rpm I am hoping I can get a bit more out of my top end, even though my whp is still going up at 7,500 rpm (not dynoed at 7,800) I would like to straighten the the hp curve.

Will be interesting to see what they come up with using the 248/256 cams.

Sounds like your project is progressing. Really looking forward to the results.

Good luck ***55356;***57152;.
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