Messages

1

Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: December 24, 2015, 02:38:18 PM »

Very interesting comparison. If I just had the money I would order those ITBs and a lightened flywheel instantly, but being a student, some money saving must be done first :l

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Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: December 19, 2015, 03:23:02 AM »

Here is the link to the Excel file! http://www.filedropper.com/bmwz319simotaexcel

I added some of my own comments in there aswell.

When I was Dynoing my Z3 I did some "mythbusting" too. I wanted to see if there would be any differences between a normal paper panel filter and a "high flow" Simota panel filter. The results were expected: Only 1 hp "gain" for the Simota filter that could totally go in the error range of the dyno measurement. So not really any surprises there.

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Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: December 18, 2015, 09:06:17 AM »

Has anyone bought the kit??? I've just checked out the website - looks superb!

My m42 is being rebuilt at this very moment, this is tempting as hell!

I don't know if its anyone off the forums, but he has sold some kits!

I am hoping for someone to post some experiences with this kit on a bored and stroked M42. The size of the airbox and diameter of the runners could choke the engine at high rpm (8000) I guess.

I know the thread is very long but I have covered those questions, but no - it will not choke out at higher RPM for several reasons:

• The supplied airbox is twice the volume of mine
• The diameter is large enough to support 2.5L
• If you end up with choking from the ITB diameter, then your restriction would actually be the port area which is slightly smaller than the ITB area
• If you open the ports, you can also open the RHD manifold, and buy 45mm ITBs (which will also fit)
• You can run any length runners you want, you can buy them in 50mm increments, with 30mm trumpets - so if you really wanted to you could run the manifold +80mm. Though if you look back you will see there is no reason to do this.

The kit is modular, you can basically set it up how ever you want by just swapping out different parts.

Puksuttaja

I have had a look at the data from your dyno day, I've just been running around for Christmas! I will get to it!

I have an Excel file that the dyno made automatically which could possibly save you a lot of work. I can send it to you (translated to english) if you want to get a look at it. It lists all the power numbers every 5 rpm

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Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: December 13, 2015, 11:28:41 AM »

That engine note is to die for!!


To the Finnish guy, where do you go to school? Kippis

I go to Metropolia university of applied sciences! Are you from Finland also?

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Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: December 10, 2015, 11:38:22 AM »

So today I Dynoed my Z3 at my engineering school! The dyno that was used was MAHA 3000, the teacher said that it gives fairly conservative power figures and that the indicated power from the engine is much more accurate than the indicated wheel horsepower because of the way it measures it. This dynometer measures all the losses occuring between the engine and the wheels independently after the dyno pull (you put the clutch in and keep it in gear) you can see it as the green line in the picture. I also asked about the DMF thing and the teacher said it shouldn't effect drivetrain losses, it simply changes the place where torque will occur.

Sorry that all the text is in finnish, there is a translation at the end of the pictures I also have an Excel file already made if you want to plot a comparison from it Lambertius!
If I forgot to mention something, ask away!

The mods that I have on my M44 Z3 (156 000 kms driven):
Fogged airbox mod
Fulda Steel 4-1 style collector 2"
2,5" Custom made mid-section pipe
2,5"  Powersprint high flow catalysator
2,5" Simons catback exhaust

Exhaust manifold

Dynoresults
Translations:
Normaaliteho, Pnorm = The power from the engine that has been corrected with ETY-norms (so not the real one!)
Moottorin teho, Pmoott = The Engine power
Pyorateho Ppyora = The wheel horsepower (not to be blindly trusted according to the teacher)
Havioteho Phavio = The measured horsepower lost from the drivetrain, wheels etc.
Suurin teho = biggest power @ 6190/172 km/h
Vaantomomentti = The Torque (this is also corrected to the ETY-norms, so out calculating the norms the real torque is 189 Nm)
Suurin saavutettu RPM = The highest achieved RPM

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Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: December 03, 2015, 02:18:49 AM »

Let's hope the drivetrain losses are greater than the 15% I assumed Anyway I'm studying automotive engineering at the moment and we have a lecture and laboratory dynotesting at our school next thursday and I get to dynotest my own Z3 there! I will post the results here, and I could also ask the teacher what are the expected drivetrain losses with these kind of power figures and drivetrain! 

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Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: December 02, 2015, 07:50:27 AM »

Nice researching But I must say that I'm wondering (don't kill me now) how the Max power is only 86 kW? Assuming that power comes from the rear wheels, quickly calculated with 15% drivetrain losses: 86kW x1.15=98,9 kW (or 132 hp)  from the engine . I know that it might not be the most accurate calculation ever, but these engines (M42 & m42) are supposed to have 103 kW (140 hp) from the engine when new. What I'm saying is, it would be nice to know what was the power completely stock, and how many horsepower has been lost during the years and miles of use. (And yes I have read that the power increase is around 16% with these ITB:s) 

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Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: October 26, 2015, 04:36:58 AM »

Ahh, okay well that explains a lot of things. I thought it was all happening in Australia But no rush, I'm just very curious. Thanks for all the info! 

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Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: October 25, 2015, 11:50:59 AM »

I still don't see the kit in www.racehead.com.au website, well i guess it will pop up in time. But what I have understood is that the kit is now up for sale in some sort of RHDs re-sellers Taiwan page at http://www.alluringarage.com/products/rhd-for-bmw-m42m44-itb-kit

I have no clue what it says in Taiwan (or chinese whatever they speak in there, can someone translate? ) in the page, but then somehow I bumped in to this in their page: http://www.alluringarage.com/rhdengineering/rhd-technical-documents/12284.html So does this mean that I have to buy a separate item for the kit to fit M44 because it has a different idle control than the M42? Is the Idle motor fitting piece already developed? I could use a little info here

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Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: August 25, 2015, 02:58:19 PM »

That looks so awesome!  I want one badly, so when can we buy these works of art?

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Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: August 09, 2015, 05:43:56 AM »

Ok, thanks. I am a automotive engineer student so I think I can figure it out even if it need a few minor modifications  I would possibly be interested in the light flywheel kit that you are planning on too 

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Swaps, Turbos, Buildups / Re: M42/M44 ITB Kit Design

« on: August 02, 2015, 03:13:06 AM »

Hi,

I just yesterday discovered this ITB kit here and I had to create an account here because this is just too awesome!! I was thinking about buying the Dbilas ITB kit but now after reading from page 8-13 of this topic in one night I realised that I it is not so well engineered at all. Thank you Lambertius for doing all the research and making this kind of proper kit to be available for us all, even though I live in Finland and I reckon the company that is now making them is in Australia I need this  Some questions came to my mind when I read this topic, so here goes:

1. Will this kit fit bolt on to a Z3 with M44?
2.What happens to all the different sensors that are attached to the OEM intake manifold, for example DISA, and others?

3. Do I need to lenghten the throttlecable on LHD Z3 because the throttle linkage is a bit more far away than normal?
4. Will the MAF go on to the kit as normal?
5. Someone asked the price of this kit in Brintech facebook page and they answered 1400 dollars but didn't say was it USD or AUSD, does anyone know if this is in USD or AUSD? (I asked them on the facebook page myself but didn't get an answer yet)
6. Does the kit contain everything to be a straight bolt on kit?

Thanks in advance! 

Also I noticed that there has been a lot of conversation about exhausts. I have a 4-1 2 inch exhaust manifold and a sports catalysator (200 CPSI) in 2,5" and all the rest exhaust is 2,5" Simons catback. I know that it is a bit too large diameter but it gives a wonderful sound and even if I haven't been to the dyno, according to my ass dyno I haven't lost power in the low end so much that I would notice it. When I installed the 4-1 "Fulda steel" manifold and sports catalysator, (year after the catback installation) I think I noticed a slight improvement in midrange torque.