Advanced Tuning and Mods

DWR · 01-30-2016, 10:57 AM

Some in depth discussion on the hybrids thread needed a new place to live.
Here it is. We were taking about backpressure vs boost vs swirl vs airflow vs valve float vs ... you get the gist.

DWR · 01-30-2016, 11:51 AM

Continued here ...

HeatherM35d · 01-30-2016, 12:08 PM

Quote:

Originally Posted by DWR

Some in depth discussion on the hybrids thread needed a new place to live.
Here it is. We were taking about backpressure vs boost vs swirl vs airflow vs valve float vs ... you get the gist.

Of course camshaft work is in the mix on an engine build with modified Pistons

DWR · 01-30-2016, 12:09 PM

Quote:

Originally Posted by HeatherM35d

Maybe the true solution is a high flow head, lower compression, lots of boost and a high swirl piston design. But I don't want to give you details on the entire build.

I guess we have to define what the problem is.

If we are talking about hard core racing, that would look like the recipe.
Oh, and stacks through the hood, right?

Since you are going that far, any adjustments to the camshaft profiles?

HeatherM35d · 01-30-2016, 12:09 PM

Quote:

Originally Posted by DWR

Quote:

Originally Posted by HeatherM35d

Maybe the true solution is a high flow head, lower compression, lots of boost and a high swirl piston design. But I don't want to give you details on the entire build.

I guess we have to define what the problem is.

If we are talking about hard core racing, that would look like the recipe.
Oh, and stacks through the hood, right?

Since you are going that far, any adjustments to the camshaft profiles?

Hood stack for sure jajaja

WreckerX5d · 01-30-2016, 12:18 PM

Quote:

Originally Posted by HeatherM35d

Quote:

Originally Posted by DWR

Quote:

Originally Posted by HeatherM35d

Maybe the true solution is a high flow head, lower compression, lots of boost and a high swirl piston design. But I don't want to give you details on the entire build.

I guess we have to define what the problem is.

If we are talking about hard core racing, that would look like the recipe.
Oh, and stacks through the hood, right?

Since you are going that far, any adjustments to the camshaft profiles?

Hood stack for sure jajaja

I second the hood stacks. Every turba' deezal needs stacks.

DWR · 01-30-2016, 12:35 PM

Quote:

Originally Posted by Wrecker335d

I second the hood stacks. Every turba' deezal needs stacks.

The question is always whether to accessorize. You know stack flaps, no flaps. These puzzling questions just never end, lol.

HeatherM35d · 01-30-2016, 01:22 PM

Quote:

Originally Posted by DWR

Quote:

Originally Posted by Wrecker335d

I second the hood stacks. Every turba' deezal needs stacks.

The question is always whether to accessorize. You know stack flaps, no flaps. These puzzling questions just never end, lol.

Where's the data on stack flap back pressure!? I bet that flap has been choking everything right off and I could've had way more ponies pushing all Along! Next seasons secret weapon I'll show you how to use an actuator of your choice attached to the stack flap which with the proper control is sort of a 'redneck vgt' system...

DWR · 01-30-2016, 01:52 PM

OMG, I think I just wet myself, lol.
Yeah let's get a flapper mod thread going!

Too funny Jeather.

HeatherM35d · 01-30-2016, 02:10 PM

Quote:

Originally Posted by DWR

OMG, I think I just wet myself, lol.
Yeah let's get a flapper mod thread going!

Too funny Jeather.

They make under garments for that problem at your age..

BEWWWM · 01-30-2016, 02:39 PM

DWR,

while I agree PSI isn't irrelevant, you can't discount the turbo size/efficiency involved as the hotside/coldslide changes things drastically. I know what you're saying and I think he was alluding to that point without really delving into it.

DWR · 01-30-2016, 05:08 PM

tuikku, thank you for the link to Nordic Porting Services. http://www.npsheads.com/index.php/cylinder-heads/diesel

They say,"IDI Diesel engines cylinder head requirements differ some what from gasoline engines. But with low rpm Direct Injection (DI) Diesels swirl comes a much more important factor than any other type of engine. Swirl should not be sacrificed for flow volume and quality of flow makes or breaks combination.
If gasoline or InDirect Injection (IDI) head development is hard because of flow speed and cfm decisions, DI head raises complexity even more by bringing swirl ratio variable which is really hard to measure effectively or to understand what ratio is required for each type of engine and RPM."

Everyone can better interpret the point you were trying to make by taking it from the source.

Also like seeing the flow numbers from your cylinder heads. Looks like US heads have a larger intake valve and more flow.

tuikku · 01-31-2016, 03:04 AM

.
The man behind this porting is very good friend of mine and he do not want, that results are shown public.
Once you show or tell something, you loose it.

Sorry

Earlier I also measured a lot of different things around engine.
But I stopped, because I figured out that in every case the question is amount of air.
More air helps in every possible trouble - it is that simple.

MB has the best flowing heads, BMW comes next.
The only thing that needs to fix in these heads is valve springs.

I am trying to find the limit of stock parts.
I´ll change the parts, that really must be changed.
And it seems that there are surprisingly few mods needed.
Next week I hopefully get the pump, Sunday I have possibility to go to dyno.
For a very long time, I am a bit excited.
Minimium mods - maximum result.

DWR · 01-31-2016, 03:08 PM

Quote:

Originally Posted by tuikku

.
The man behind this porting is very good friend of mine and he do not want, that results are shown public.
Once you show or tell something, you loose it.

Sorry

I did not realize that you had ported heads, based on your posts.
Sorry, I was referring the stock flow numbers that they report on their website. I thought you were using stock heads.

DWR · 01-31-2016, 03:10 PM

Oh, and good luck on your dyno session.

Will you have data to share from that session, like AFR, EGT, IAT, etc.? Or just HP,Torque and rpm?

tuikku · 01-31-2016, 05:09 PM

Quote:

Originally Posted by DWR

I did not realize that you had ported heads, based on your posts.
Sorry, I was referring the stock flow numbers that they report on their website. I thought you were using stock heads.

I don´t have picture, where is only stock head.
I have tried, many times, thats why I know, what I am talking about.

BMW (dirty) head and stock vs. stiffer spring

tuikku · 01-31-2016, 05:12 PM

Quote:

Originally Posted by DWR

Oh, and good luck on your dyno session.

Will you have data to share from that session, like AFR, EGT, IAT, etc.? Or just HP,Torque and rpm?

Just "hard" numbers, nm/hp.
I have a possibility to collect something .... hmm maybe.

DWR · 01-31-2016, 07:03 PM

Quote:

Originally Posted by tuikku

I don´t have picture, where is only stock head.
I have tried, many times, thats why I know, what I am talking about.

BMW (dirty) head and stock vs. stiffer spring

Haha, I see you are porting carbon.

That must give better flow! (Just a joke.)

tuikku · 02-01-2016, 12:21 AM

.
Actually, in this case also, the benefit was smaller than I expected.
That`s why my opinion now is springs ...
Cleaning, if you have to open the engine anyway.

It seems still a bit that you don´t believe, I have really done the things that I am talking about...

Try to google tuikku bmw, or tuikku mercedes (all languages)
You will find some pics

tuikku · 02-01-2016, 12:26 AM

.
One of my recent project...

Codename "Thunder"

TDIwyse · 02-01-2016, 07:03 AM

Quote:

Originally Posted by tuikku

...
Codename "Thunder"

Oh man I like that contraption. Ha!

DWR · 02-01-2016, 08:48 AM

Quote:

Originally Posted by tuikku

It seems still a bit that you don´t believe, I have really done the things that I am talking about...

I am well aware of your reputation. There is a language barrier that keeps getting in the way. Trust me, it is not what it seems.

01-30-2016, 10:57 AM	#1
DWR Banned 798 Rep 1,633 Posts Drives: 2009 335d Join Date: Oct 2014 Location: Maine iTrader: (0)	Advanced Tuning and Mods Some in depth discussion on the hybrids thread needed a new place to live. Here it is. We were taking about backpressure vs boost vs swirl vs airflow vs valve float vs ... you get the gist. Last edited by DWR; 01-30-2016 at 11:04 AM..
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01-30-2016, 11:51 AM	#2
DWR Banned 798 Rep 1,633 Posts Drives: 2009 335d Join Date: Oct 2014 Location: Maine iTrader: (0)	Continued here ... Attached Images
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01-30-2016, 01:52 PM	#9
DWR Banned 798 Rep 1,633 Posts Drives: 2009 335d Join Date: Oct 2014 Location: Maine iTrader: (0)	OMG, I think I just wet myself, lol. Yeah let's get a flapper mod thread going! Too funny Jeather.
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01-30-2016, 02:39 PM	#11
BEWWWM I like to party 45 Rep 126 Posts Drives: 2011 335d Join Date: Sep 2015 Location: Tampa iTrader: (0)	DWR, while I agree PSI isn't irrelevant, you can't discount the turbo size/efficiency involved as the hotside/coldslide changes things drastically. I know what you're saying and I think he was alluding to that point without really delving into it.
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01-30-2016, 05:08 PM	#12
DWR Banned 798 Rep 1,633 Posts Drives: 2009 335d Join Date: Oct 2014 Location: Maine iTrader: (0)	tuikku, thank you for the link to Nordic Porting Services. http://www.npsheads.com/index.php/cylinder-heads/diesel They say,"IDI Diesel engines cylinder head requirements differ some what from gasoline engines. But with low rpm Direct Injection (DI) Diesels swirl comes a much more important factor than any other type of engine. Swirl should not be sacrificed for flow volume and quality of flow makes or breaks combination. If gasoline or InDirect Injection (IDI) head development is hard because of flow speed and cfm decisions, DI head raises complexity even more by bringing swirl ratio variable which is really hard to measure effectively or to understand what ratio is required for each type of engine and RPM." Everyone can better interpret the point you were trying to make by taking it from the source. Also like seeing the flow numbers from your cylinder heads. Looks like US heads have a larger intake valve and more flow. Last edited by DWR; 01-30-2016 at 07:49 PM..
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01-31-2016, 03:04 AM	#13
tuikku Private First Class 55 Rep 157 Posts Drives: BMW E92 335d Join Date: Jan 2016 Location: Finland iTrader: (0)	. The man behind this porting is very good friend of mine and he do not want, that results are shown public. Once you show or tell something, you loose it. Sorry Earlier I also measured a lot of different things around engine. But I stopped, because I figured out that in every case the question is amount of air. More air helps in every possible trouble - it is that simple. MB has the best flowing heads, BMW comes next. The only thing that needs to fix in these heads is valve springs. I am trying to find the limit of stock parts. I´ll change the parts, that really must be changed. And it seems that there are surprisingly few mods needed. Next week I hopefully get the pump, Sunday I have possibility to go to dyno. For a very long time, I am a bit excited. Minimium mods - maximum result.
	Appreciate 0 Quote

01-31-2016, 03:10 PM	#15
DWR Banned 798 Rep 1,633 Posts Drives: 2009 335d Join Date: Oct 2014 Location: Maine iTrader: (0)	Oh, and good luck on your dyno session. Will you have data to share from that session, like AFR, EGT, IAT, etc.? Or just HP,Torque and rpm?
	Appreciate 0 Quote

02-01-2016, 12:21 AM	#19
tuikku Private First Class 55 Rep 157 Posts Drives: BMW E92 335d Join Date: Jan 2016 Location: Finland iTrader: (0)	. Actually, in this case also, the benefit was smaller than I expected. That`s why my opinion now is springs ... Cleaning, if you have to open the engine anyway. It seems still a bit that you don´t believe, I have really done the things that I am talking about... Try to google tuikku bmw, or tuikku mercedes (all languages) You will find some pics
	Appreciate 0 Quote

02-01-2016, 12:26 AM	#20
tuikku Private First Class 55 Rep 157 Posts Drives: BMW E92 335d Join Date: Jan 2016 Location: Finland iTrader: (0)	. One of my recent project... Codename "Thunder"
	Appreciate 0 Quote