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

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Old 05-20-2014, 12:01 AM   #41
cosmos328Ci
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Quote:
Originally Posted by jdjg View Post
what it that plug? looks like the IAT plug......


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Manifold Absolute Pressure sensor.

http://en.wikipedia.org/wiki/MAP_sensor
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Old 05-20-2014, 12:06 AM   #42
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Will also share a bit of research I have been doing on camshaft overlap. I read a lot, probably too much, but ESS tunes for these TS systems are either based around oem cams, oem ZHP cams, or the 248/256 FI cams. I have noticed a few members are getting great power figures with other cams, but these require custom tunes, or being used with standalone ecu's. The list below is the installed overlap of a few of the more common Schrick camshafts, calculated from the Schrick camshaft catalogue.

248/256=41 crankshaft degrees
248/248=41 crankshaft degrees
264/248=43 crankshaft degrees
272/256=47 crankshaft degrees

I can't find the appropriate data for oem cams to calculate installed overlap. I am not sure which cams are approved for use by ESS, but I would suggest that the overlap would be far too great with the 272/256 and standard ESS tunes. I have read a few posts where people are using the 272/256 cams with stand alones or custom tunes with smaller pulleys (to compensate for loss during overlap) and making great results power wise.

Im more so adding this info as I see a lot of posts of people going as far as they can NA, and then switching to FI. I am aware of a member with the 272/256 cams installed, who was told prior to TS install that they would work with the ts2+ tune, but that doesn't seem to be the case

Would be nice if anyone could add to this also
"I can't find the appropriate data for oem cams to calculate installed overlap".

Is this want you want?
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Old 05-20-2014, 12:11 AM   #43
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Originally Posted by cosmos328Ci View Post
"I can't find the appropriate data for oem cams to calculate installed overlap".

Is this want you want?
You squished a fly
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Old 05-20-2014, 12:14 AM   #44
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Thanks cosmos328Ci, I will have a look at them once I get home from work
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Old 05-20-2014, 02:12 AM   #45
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Does anyone have HP numbers to support these camshaft combo? Overlap is not recommended for SC. Why would you have more on your intake side than your exhaust side? The air is being compressed (multiplied) in, so it would be more beneficial to move the air out of the engine more quickly. I am aware that things that make sense don't always work, but we never have seem to have reports on actual hp gains from the cams...
What camshafts are you referring too?? Give reference.

E = Intake. Eg 248
A = Exhaust. Eg 256

Intake numbers are usually shown first.

If this is what you are confused about?
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Old 05-20-2014, 02:12 AM   #46
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Originally Posted by diablorojo View Post
Does anyone have HP numbers to support these camshaft combo? Overlap is not recommended for SC. Why would you have more on your intake side than your exhaust side? The air is being compressed (multiplied) in, so it would be more beneficial to move the air out of the engine more quickly. I am aware that things that make sense don't always work, but we never have seem to have reports on actual hp gains from the cams...
Overlap is still needed on our set ups. Firstly, while under boost the positive intake pressure will clear spent gasses from the combustion chamber during overlap, secondly, for the majority of driving, unless you have deleted the bypass valve, you will not be driving with a positive intake pressure, and will still need overlap to assist in scavenging.
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Old 05-20-2014, 04:12 AM   #47
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First post has been updated again
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Old 05-20-2014, 04:56 AM   #48
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Hi



I have searched the forum for info on what sized pulleys people are using on their ESS twin screws, the information seems to be very spread out and random. I was wondering what sizes people were running with the standard ESS ts2 and ts2+ tunes, as well as with standalone ecu's. I am running the standard 81mm TS2+ pulley and tune, and was wondering what others have done to get a bit more out of the setup.



Thanks



Dave





For ease of use, below is a summary of pulley sizes/ boost, as advertised (I will update as new info is shared):



Stock compression- 30 lb injectors

90mm diameter: 7 psi ESS Standard TS1

85mm diameter: 8 psi ESS Standard TS2 with newer tunes/kits

83mm diameter: 8 psi ESS Standard TS2 older tunes

83mm diameter: 8 psi ESS Standard TS2+ with newer tunes/kits

81mm diameter: 8.5 psi ESS Standard TS2+ older tunes

79mm diameter: (to be confirmed, not supplied by ESS)

77mm diameter: 9.5 psi, not supplied by ESS



Lowered compression- 42 lb injectors

68mm diameter: 14 psi ESS Standard TS3

63mm diameter: 15.2psi ESS TS3 Upgrade

60mm diameter: 16 psi ESS TS3 Upgrade

So Dave, I bolted the 78mm pulley on tonight and, yes makes a noticeable difference in performance. Just waiting for my engine to explode now.


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Old 05-20-2014, 05:11 AM   #49
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So Dave, I bolted the 78mm pulley on tonight and, yes makes a noticeable difference in performance. Just waiting for my engine to explode now.


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You shouldn't be waiting too long
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Old 05-20-2014, 06:49 AM   #50
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So Dave, I bolted the 78mm pulley on tonight and, yes makes a noticeable difference in performance. Just waiting for my engine to explode now.


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Install 50/50 water meth, that will keep it going longer.
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Old 05-20-2014, 07:20 AM   #51
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Quote:
Originally Posted by Davew View Post
Will also share a bit of research I have been doing on camshaft overlap. I read a lot, probably too much, but ESS tunes for these TS systems are either based around oem cams, oem ZHP cams, or the 248/256 FI cams. I have noticed a few members are getting great power figures with other cams, but these require custom tunes, or being used with standalone ecu's. The list below is the installed overlap of a few of the more common Schrick camshafts, calculated from the Schrick camshaft catalogue.

248/256=41 crankshaft degrees
248/248=41 crankshaft degrees
264/248=43 crankshaft degrees
272/256=47 crankshaft degrees

I can't find the appropriate data for oem cams to calculate installed overlap. I am not sure which cams are approved for use by ESS, but I would suggest that the overlap would be far too great with the 272/256 and standard ESS tunes. I have read a few posts where people are using the 272/256 cams with stand alones or custom tunes with smaller pulleys (to compensate for loss during overlap) and making great results power wise.

Im more so adding this info as I see a lot of posts of people going as far as they can NA, and then switching to FI. I am aware of a member with the 272/256 cams installed, who was told prior to TS install that they would work with the ts2+ tune, but that doesn't seem to be the case

Would be nice if anyone could add to this also

Hi Dave, I think Diablorojo asking about this post when you suggest to install the 272(Intake)/256(exhaust), and he asking why you say that, since with the SC you need to take out more combustion gases and if you have the SC why you need to install a much more aggressive intake cam than the exhaust cam, he think you need to install a much more aggressive exhaust cam than the intake cam....


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Old 05-20-2014, 08:52 AM   #52
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Hi Dave, I think Diablorojo asking about this post when you suggest to install the 272(Intake)/256(exhaust), and he asking why you say that, since with the SC you need to take out more combustion gases and if you have the SC why you need to install a much more aggressive intake cam than the exhaust cam, he think you need to install a much more aggressive exhaust cam than the intake cam....


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Davew said, "but I would suggest that the overlap would be far too great with the 272/256 and standard ESS tunes".

No where does he suggest to use these in a FI engine.
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Old 05-20-2014, 11:33 AM   #53
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Originally Posted by cosmos328Ci View Post
Davew said, "but I would suggest that the overlap would be far too great with the 272/256 and standard ESS tunes".



No where does he suggest to use these in a FI engine.

oh I got it....

thanks


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Old 05-20-2014, 12:39 PM   #54
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oh I got it....

thanks


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Your welcome.

How are your engine mods going now?
Got a plan yet?

Cheers
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Old 05-20-2014, 12:51 PM   #55
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Originally Posted by cosmos328Ci View Post
Your welcome.



How are your engine mods going now?

Got a plan yet?



Cheers

nothing jet, but my plans are Vacmotorsport Cylinder Head Stage 3 and TS3 and Meth/Water injection....


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Old 05-20-2014, 01:04 PM   #56
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nothing jet, but my plans are Vacmotorsport Cylinder Head Stage 3 and TS3 and Meth/Water injection....


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Sounds like a great plan.
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Old 05-20-2014, 01:40 PM   #57
jdjg
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ESS TS Pulley Upgrades

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Originally Posted by cosmos328Ci View Post
Sounds like a great plan.

and very expensive plan.. but for now, Im trying with a custom 79mm pulley......
maybe the first thing I will do are the Meth/Water inject, its the less expensive mod..... here in my country have around 36~40 Celcius all time.....


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Old 05-20-2014, 01:43 PM   #58
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So Dave, I bolted the 78mm pulley on tonight and, yes makes a noticeable difference in performance. Just waiting for my engine to explode now.


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why do you think with your 78mm pulley your motor gonna explode?



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Old 05-20-2014, 06:00 PM   #59
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one more question, any of you guys know how much psi are the Fuel Pressure in WOT with the ESS TS? I got 57 psi in WOT and 44 psi in idle....


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Old 05-20-2014, 06:30 PM   #60
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Where do you source these pulleys from?
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2004 330Ci 6 Speed; UUC Sway Bars; Powerflex RTAB's and FCAB's; KW V2 Coilovers; 3.38 OS Giken LSD
Z4 Finned Diff Cover; Headers; M-Tech II Rear Bumper and CF Diffusor; CF Trunk; CSL Front Bumper
M3 CF Hood; DICE I-Pod Kit; JTD Rear Shock Mounts; UUC Front Strut Bar; O2 Simulators
ESS TS2 Twin Screw Supercharger

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