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Forced Induction Forum Sponsored by Active Autowerke
Discuss supercharging, turbocharging and even nitrous and water injection here.
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Old 12-05-2008, 07:48 PM   #1
Sean@VF-Engineering
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VF Engineering Engine Build Up Day 3!!!

Alright guys and gals! We are into our 3rd day on the build and things are looking great. The pictures truly do not do this work justice. As you will see, the combustion chambers are very clean and do not reflect the drivers intensity with his car.

New OEM MLS head gasket




Spacer/shim installed




Second MLS gasket installed




Head being installed




Head being torqued to spec


Cams being installed




Special cam tool at work


Cam gears and Vanos being reassembled


Cam timing being set


More pictures and Info to come next week!!!
-Sean
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Old 12-05-2008, 08:42 PM   #2
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looking good! someone is a lucky man and i know who haha
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wat?? guys with turbo M3's don't have woman troubles...

try adjusting your wastegate
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Old 12-06-2008, 12:24 AM   #3
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Old 12-06-2008, 02:41 AM   #4
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Should we expect to see stage 3 running at the charity event?
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Old 12-06-2008, 06:35 AM   #5
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what is the new comp. ratio?
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Old 12-10-2008, 01:58 AM   #6
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*** UPDATE ***

As correctly pointed out on another forum, this was not what most enthusiasts would refer to as an "engine build". The thread title could have been worded differently. Well, many here already know some of the details, but here is a concise write up:


Objective
To increase engine power output by lowering engine compression ratio and increasing duty cycle of VF-Engineering stage 2 supercharger. This new power level would be called "stage 3". The goal is to keep cost as low as possible and retain engine reliability with as little knock correction as possible on 91 octane.

Apparatus (Test car)
2005 ZCP SMG. Installed with VF-Engineering Stg2+ (T-trim). Supersprint headers, high performance cats and exhaust system, upgraded clutch and water injection for the summer. Currently producing 500rwhp on 91 octane.

Background of test car owner
Many of you know him already- Drew aka DLSJ5. Drew is not affiliated with VF-Engineering. He is a die-hard enthusiast who pushes the limits of his car. His signature being - the stock appearance of his car with his son - Jake's car seat locked in tighly in the back seat. Jake (just turned 4years old) will tell you without a flinch what his daddys favorite car is. He can also tell you what the best car in the world is. And that is the "Supercharged M3".

Method
Many tuners have successfully lowered the compression ratio by spacing the cylinder using a "shim" as a production solution. VF-Engineers chose to try this method in order to keep costs to a minimum and give enthusiasts a minimally invasive modification yet take power up another notch. The usual formula of 0.040" per compression point was used to create a cumulative head gasket "stack height" of 0.070" using OEM gaskets to sandwich a lazer cut stainless steel shim.

BMW OEM tools to remove and replace the cylinder head were pre-ordered (took 2 months to arrive) and OEM instuction manuals obtained through "friends". Separate tools were required for removing vanos and cams and for installing them - per OEM procedures. All-in-all 4 months of prep went into the project leading upto today.

Results
Prior to removing the cylinder head, compression results were 170,170,165,163,170,170 which was right inside the factory spec.

The head was removed and pistons and valves examined as the vehicle had been running with the stage2 since the product was released. Pistons and Valves were found to be extremely clean (thanks to the water injection quite likely), and no pits or scarring were evident at all. Gaskets were installed and head put back down (lots of details omitted). Finally when it came to putting the chain back on the cam sprockets it was determined that there was insufficient chain length to allow for the thicker head gasket. Various options were explored and our main engineer chose not to pursue this avenue any further due to engineering principals. As with all research and development we experience many highs and lows. This result was not completely unexpected as we started this project as an "unknown" and expectations were not being set until achieved an end result.

Summary
The head gasket spacer was removed and the head re-installed per OEM factory procudure and this method of lowering the compression was struck off.

Conclusion
Our engineers chose to keep the stage 3 option available for anyone choosing to install upgraded rods and low compression pistons. An example of this being the Evosport Stg4 car featured earlier this year in European Car Magazine which produces 600whp on race gas. Having been given the above information, two forum enthusiasts have since chosen to go down this route of upgrading rods and pistons already. They will update you when they have more information very likely. It will off course be more time consuming.

DLSJ5's comment
"Nik, I absolutely loved what you did for my E46M and you guys support your product and our community so much, thankyou. It is time for me to move on and upgrade my car as I normally do every couple of years. "

Jakes comment
"daddy lets get another M3!"
DLSJ5 will probably drop in with some words and a hint of what he is planning next.

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Old 12-10-2008, 09:19 AM   #7
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darn it i was hoping for the "cheaper" route...looks like a motor build up will be in my future very shortly. This is why I love dealing with VF Engineering..honesty...some other S/C companies could learn a few lessons in this.. Nik that is really to bad as i would imagine you had invested a few thousand dollars for a dead end, but at least you tried. One postive note, the condition of drews motor after so many thousands of miles beating crap out of it.
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Old 12-10-2008, 09:27 AM   #8
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ah, there it is...I guess I will go stage II only..,HA....only.

M
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Old 12-10-2008, 11:06 AM   #9
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looks great!! does he have stock headers?
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Old 12-10-2008, 11:53 AM   #10
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darn it i was hoping for the "cheaper" route...looks like a motor build up will be in my future very shortly. This is why I love dealing with VF Engineering..honesty...some other S/C companies could learn a few lessons in this.. Nik that is really to bad as i would imagine you had invested a few thousand dollars for a dead end, but at least you tried. One postive note, the condition of drews motor after so many thousands of miles beating crap out of it.
Agreed, although it is a little dissapointing. VF tried to give us more power in less expensive way, but no go, that's part of the deal at times, but ultimately pistons and rods are the way to go and I know a few cars are lined up already.

I don't think it's in vain either Bro, as we were able to see the condition of the motor after 25K of HARD driving, higher boost levels, etc. Although I did monitor my car more than most, and keep things in constant check, it's a testament to good tuning, and a well engineered SC'r kit.
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Old 12-10-2008, 11:57 AM   #11
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looks great!! does he have stock headers?
Supersprint!
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Old 12-10-2008, 12:13 PM   #12
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Supersprint!
so do we get a hint for whats next drew? i know you have a couple in mind but anything that your really thinking about?
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wat?? guys with turbo M3's don't have woman troubles...

try adjusting your wastegate
HPF Stage 3 #001

R35 GTR coming soon ;)
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Old 12-10-2008, 12:43 PM   #13
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Sorry to hear things didn't work out VF and Drew. VF stage 2 and 2.5 is still kick ass! VF is a great company and I highly respect them. If they feel something will compromise the reliability of a customerís car they donít do it. They hold fast to their standards. They donít just care about making dollars and cents. They care about reliability, driveability, and efficiency.

-Frank
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Old 12-10-2008, 12:47 PM   #14
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Thanks Frank. I couldn't agree more!
-Sean
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Old 12-10-2008, 04:15 PM   #15
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Yeah, after watching countless videos and reading a ton here I think my decision will soon be made for the 2.5 kit.
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Old 12-13-2008, 10:33 AM   #16
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Yeah, after watching countless videos and reading a ton here I think my decision will soon be made for the 2.5 kit.

i thought the point of a hydraulic tensioner and timing chain setup is that the tensioner will vary itself over time thus it would allow for just such mods. i came from multiple FI'd VW's in which we used spacers to boost vr6's all day while running well over 20psi of boost. so i dont see why its not doable in the s54 since it uses a very similar means of timing.
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Old 12-13-2008, 01:13 PM   #17
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It`s a blessing in disguise really. The last thing VF want is for engines with stock internals to start failing and jepordizing their reputation. Built internals is the way forward at this sort of level.

If you can get January`s Performance BMW there`s a custom ESS VT car in there built by the raceshop that did mine, with support from ESS. It`s using a maxxed out T trim with the simillar charge-cooled intake to VF and its putting out a genuine 700hp on Dyno Dynamics with pump fuel and no Junk in the Trunk.

I`d expect the VF Stage 3 to be very close to this.
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