Any modifications youd like to see?

esqu1re · 02-27-2012, 10:05 AM

I would definitely consider buying a good looking, functional, somewhat easily installed rear diffuser made out of high temperature plastic, under 400 bucks.

ZStig · 02-27-2012, 10:22 AM

You guys realise the M cars already have a wind tunnel proven rear diffuser already installed on the car, right?

Beedub · 02-27-2012, 11:18 AM

id like to see an alloy coolant header tank with sight glass and Temperature reading coolant cap :-) would be nice if we could get alittle more capacity out of it as well, the plastic unit does not fill me with confidence especially when you hammer it all day on the track and it starts to look like its going to blow up!!! lol

Twisted Six · 02-27-2012, 01:04 PM

Quote:

Originally Posted by Finnegan

Very good suggestions and ideas from folks.

+1 on "proper heads up gauge pod". Would be nice to have oil pressure, oil and water temp, etc. +1 on the structurally attached and adjustable splitter.

I'll add to the list some kind of shift light. I miss that from the E92, would be nice to have on the track as you can see if using peripheral vision. Even better if it could indicate low and high rev ranges.

Some thoughts and just insight/feedback on suspension tuning, wheels, offsets, etc. of the Z4M and sharing of that knowledge would probably be invaluable.

Not sure about a carbon fiber door. The empty door shell only weighs 30 lbs, not much to save there side to side. The internals, fittings, and trim are what add up.

Strut brace from Rogue is just nearing completion, and Rogue is also on deck for FCABs. That may not be the best place to put resources, and folks here have already asked Rogue to work on them.

DarkSchnitzer may also have the brake ducts coming on line based on his post above and elsewhere, not sure if there is an ETA though. Ducts would be fantastic, no matter who does them!

Yes. The plugs are done and the mold is almost done for them. They are a direct bolt-in replacement from the stock plastic units....just in CF and visible weave.

Beedub · 02-27-2012, 01:17 PM

Quote:

Originally Posted by Dark Schnitzer

[/COLOR][/B]

Yes. The plugs are done and the mold is almost done for them. They are a direct bolt-in replacement from the stock plastic units....just in CF and visible weave.

im in!!!

VinnieAces · 02-27-2012, 01:30 PM

Quote:

Originally Posted by Roffle Waffle

You guys realise the M cars already have a wind tunnel proven rear diffuser already installed on the car, right?

yes but i'd like the same wind-tunnel proven results with a more aggressive look!

Kgolf31 · 02-27-2012, 01:36 PM

Quote:

Originally Posted by Dark Schnitzer

[/COLOR][/B]

Yes. The plugs are done and the mold is almost done for them. They are a direct bolt-in replacement from the stock plastic units....just in CF and visible weave.

Can't wait. I already want one!

DataStream18 · 02-27-2012, 02:40 PM

Models in, on and around the cars NOT in platform high heals!

ZStig · 02-27-2012, 03:34 PM

Quote:

Originally Posted by VinnieAces

yes but i'd like the same wind-tunnel proven results with a more aggressive look!

I think the ac shnitzer one looks amazing, but wind tunnel testing is $$$$$

davesz4mc · 03-07-2012, 12:36 PM

I would like to see a valve shim set released that has half steps of .02mm in it. Depending on a particular engine the closest you can get some valves is .03mm of gap while others are perfect with .01mm gap. Ok so even .03 is within spec for these engines but if you are working every possible angle of performace there is a gap here, pun intended.

gcochard · 03-07-2012, 02:11 PM

Quote:

Originally Posted by davesz4mc

I would like to see a valve shim set released that has half steps of .02mm in it. Depending on a particular engine the closest you can get some valves is .03mm of gap while others are perfect with .01mm gap. Ok so even .03 is within spec for these engines but if you are working every possible angle of performace there is a gap here, pun intended.

What would that get you, maybe 5hp max?

RandysV10 · 03-07-2012, 02:28 PM

Quote:

Originally Posted by Beedub

im in!!!

+1 Me too

davesz4mc · 03-07-2012, 02:56 PM

It would be relative to your performance additions.

Your cam would come in sooner with a greater peak lift. Granted it is not by much each valve .02mm but at .04mm per cylinder or .24mm over 6 cylinders in adds up pretty quick then. With both intake and exhaust valves ~.48mm volume throughput overall that you would be gaining. Not to mention minor tweaking of timing etc that would result.

So why would you not want your 5hp on a stock motor? That will be a much greater number on a stage 1 or 2 car that has some real volume to move. Not to mention that it is really easy to do a valve job.

People out there port heads right? Just to get some flow improvements without increasing volume and they are gaining power. How about port matching exhaust/intake manifolds? If every little bit adds power here is a little bit more we can gain with just a tiny spacer.

Or how about a crazy senario,
You have the new stage 3 ESS kit and you are making 620rwhp, that is 103hp per cylinder. Say you have one cylinder both valves min spec .02mm and 1 cylinder max spec both valves .10mm. You are self tuning your kit trying to tweak everything you can get out of it and you are still using the two sensor wide band 02 system so it is working off averages for your fuel map, timing etc so know how much power is that costing you for that lax cylinder? Theoretically that could be the differance of dropping a cylinder due to a lean or other adverse condition.

l4zy · 03-07-2012, 07:07 PM

Quote:

Originally Posted by esqu1re

I would definitely consider buying a good looking, functional, somewhat easily installed rear diffuser made out of high temperature plastic, under 400 bucks.

I found a universal diffuser made out of aluminum on ebay for about $100. Decided to try it out and see if I like it.

I've had it on for 2 days and so far I've been getting ground clearance issues.

Jumbosock · 03-07-2012, 08:59 PM

My driveway would crunch that the second I left my garage. =(

Panchio · 03-07-2012, 09:09 PM

Quote:

Originally Posted by Dubbedown

Not sure how sophisticated the shop is but maybe cheaper alternative for catless headers (as opposed to Euro, CSL, Supersprint) and maybe a front strut bar (instead of oem, Strong Strut)...

+100000000000

BIMMERGUY91 · 03-07-2012, 10:12 PM

I would be interested in a set of direct bolt on Z4M upgraded sway bars. Also FCAB's and other bushings. I also personally would like it if somebody make a set of neoprene engine mounts since i would like something between rubber and poly

VinnieAces · 03-07-2012, 10:22 PM

@L4zy,

Thats the kind of look I want! With those aggressive fins in the middle!

The AC one is sick but lacking the fins!

Gt4 · 03-07-2012, 10:42 PM

Maybe front canards.

I used to have the Bimmerworld canards on my E46 M3, it was expensive for the quality you got... But it was a nice upgrade with the splitter.

kklin · 03-07-2012, 10:56 PM

Does anyone make an aluminum front underpanel for Z4 M? I always thought I'd get the JT-Designs underpanel when I had my E36, but never got around to it. In the mean time, I'll see if autocross cones are friendlier to Z4 M plastic.

ZStig · 03-08-2012, 09:21 AM

Quote:

Originally Posted by kklin

Does anyone make an aluminum front underpanel for Z4 M? I always thought I'd get the JT-Designs underpanel when I had my E36, but never got around to it. In the mean time, I'll see if autocross cones are friendlier to Z4 M plastic.

They're not. I ripped out a $35 panel between the wheel and bumper in te corner

ZStig · 03-08-2012, 09:23 AM

Quote:

Originally Posted by l4zy

Quote:

Originally Posted by esqu1re

I would definitely consider buying a good looking, functional, somewhat easily installed rear diffuser made out of high temperature plastic, under 400 bucks.

I found a universal diffuser made out of aluminum on ebay for about $100. Decided to try it out and see if I like it.

I've had it on for 2 days and so far I've been getting ground clearance issues.

Looks really cool. Even if u scratch it, just re-spray it

02-27-2012, 10:05 AM	#23
esqu1re Lieutenant Colonel 41 Rep 1,855 Posts Drives: M Coupe Join Date: Jul 2010 Location: East Coast iTrader: (0)	I would definitely consider buying a good looking, functional, somewhat easily installed rear diffuser made out of high temperature plastic, under 400 bucks. __________________ ///M Coupe: RPI Scoop, OE Strut, CDV, Volk RE30, SS Brake Lines, Stromung Exhaust
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02-27-2012, 10:22 AM	#24
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	You guys realise the M cars already have a wind tunnel proven rear diffuser already installed on the car, right? __________________
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02-27-2012, 11:18 AM	#25
Beedub Major General 423 Rep 5,328 Posts Drives: 2007 Z4 M roadster vt2-500 Join Date: Sep 2007 Location: UK iTrader: (0)	id like to see an alloy coolant header tank with sight glass and Temperature reading coolant cap :-) would be nice if we could get alittle more capacity out of it as well, the plastic unit does not fill me with confidence especially when you hammer it all day on the track and it starts to look like its going to blow up!!! lol __________________ Z4MR VT2 - Clubsport build. Multi award winning Detailing \| Wrap \| PPF specialists UK based - www.topwrapz.com
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02-27-2012, 02:40 PM	#30
DataStream18 Lieutenant 45 Rep 556 Posts Drives: 2003 ESS TS1 Z4 Join Date: May 2011 Location: Muskegon, Mi iTrader: (0) Garage List 2004 ESS Supercharg ... [4.00]	Models in, on and around the cars *NOT* in platform high heals! __________________ TS2/Cat-Less Headers/Jet Hot Coating 2000/CF Engine covers & Oil Cap/RPi Scoop/Matte Black Grills/H&R Sport Springs/15mm Spacers Rear/12mm Spacers Front/Flowmaster 40 series/Alcantara Shift Boot/CF Vinyl wrap/SPEC Stage 2+ clutch/8 Lbs Fly wheel/ZHP Shift knob/Hawk HPS Pads/Cross Drilled/Slotted Rotors/Performance Pedal Set/Stewart water pump Love is like a fart; if you have to force it, it's probably shit.
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03-07-2012, 12:36 PM	#32
davesz4mc Second Lieutenant 25 Rep 296 Posts Drives: 2007 z4mc Join Date: Feb 2012 Location: San Antonio, Tx iTrader: (0)	I would like to see a valve shim set released that has half steps of .02mm in it. Depending on a particular engine the closest you can get some valves is .03mm of gap while others are perfect with .01mm gap. Ok so even .03 is within spec for these engines but if you are working every possible angle of performace there is a gap here, pun intended.
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03-07-2012, 02:56 PM	#35
davesz4mc Second Lieutenant 25 Rep 296 Posts Drives: 2007 z4mc Join Date: Feb 2012 Location: San Antonio, Tx iTrader: (0)	It would be relative to your performance additions. Your cam would come in sooner with a greater peak lift. Granted it is not by much each valve .02mm but at .04mm per cylinder or .24mm over 6 cylinders in adds up pretty quick then. With both intake and exhaust valves ~.48mm volume throughput overall that you would be gaining. Not to mention minor tweaking of timing etc that would result. So why would you not want your 5hp on a stock motor? That will be a much greater number on a stage 1 or 2 car that has some real volume to move. Not to mention that it is really easy to do a valve job. People out there port heads right? Just to get some flow improvements without increasing volume and they are gaining power. How about port matching exhaust/intake manifolds? If every little bit adds power here is a little bit more we can gain with just a tiny spacer. Or how about a crazy senario, You have the new stage 3 ESS kit and you are making 620rwhp, that is 103hp per cylinder. Say you have one cylinder both valves min spec .02mm and 1 cylinder max spec both valves .10mm. You are self tuning your kit trying to tweak everything you can get out of it and you are still using the two sensor wide band 02 system so it is working off averages for your fuel map, timing etc so know how much power is that costing you for that lax cylinder? Theoretically that could be the differance of dropping a cylinder due to a lean or other adverse condition.
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03-07-2012, 08:59 PM	#37
Jumbosock Captain 76 Rep 987 Posts Drives: 2007 M coupe Join Date: Apr 2011 Location: San Diego iTrader: (0)	My driveway would crunch that the second I left my garage. =(
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03-07-2012, 10:12 PM	#39
BIMMERGUY91 Captain 113 Rep 855 Posts Drives: 2014 335I M Sport Join Date: Apr 2010 Location: Huntsville, AL iTrader: (2)	I would be interested in a set of direct bolt on Z4M upgraded sway bars. Also FCAB's and other bushings. I also personally would like it if somebody make a set of neoprene engine mounts since i would like something between rubber and poly __________________ 2014 335i M Sport 2010 328i M Sport 2007 Z4MC #1019/1815 (Sold) 1997 M3 (Sold) 1991 325i
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03-07-2012, 10:22 PM	#40
VinnieAces Lieutenant Colonel 92 Rep 1,603 Posts Drives: Imola Red Z4MC Join Date: Apr 2010 Location: Ontario, Can iTrader: (2) Garage List 2006 Z4 M Coupe [8.00]	@L4zy, Thats the kind of look I want! With those aggressive fins in the middle! The AC one is sick but lacking the fins! __________________ ///M - Some Mods 'N Stuff
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03-07-2012, 10:42 PM	#41
Gt4 Captain 54 Rep 879 Posts Drives: 2006 E46 M3 Estoril blue 6mt Join Date: Jan 2012 Location: Montreal iTrader: (5)	Maybe front canards. I used to have the Bimmerworld canards on my E46 M3, it was expensive for the quality you got... But it was a nice upgrade with the splitter.
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03-07-2012, 10:56 PM	#42
kklin Second Lieutenant 9 Rep 208 Posts Drives: BMW Z4 M Coupe Join Date: Jul 2011 Location: PA iTrader: (1)	Does anyone make an aluminum front underpanel for Z4 M? I always thought I'd get the JT-Designs underpanel when I had my E36, but never got around to it. In the mean time, I'll see if autocross cones are friendlier to Z4 M plastic.
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