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Dammit
Watkins Glen


Joined: 23 Sep 2016
Posts: 2235



PostPosted: Tue Jun 25, 2019 8:27 pm    Post subject: Reply with quote

They look great, do they fill the new wheels?
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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7161
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Tue Jun 25, 2019 8:36 pm    Post subject: Reply with quote

Hopefully!!! I'll find out when I get my hands on them.

MC
 
  
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kurlykris
Indianapolis


Joined: 30 Jun 2014
Posts: 2489
Location: Warwickshire


PostPosted: Tue Jun 25, 2019 10:11 pm    Post subject: Reply with quote

I popped in to see Alex last week as I was up there, they looked good to me MC Grin
I`ll be back up there on Thursday if you need me to pick anything up for you while I`m there Thumb
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7004
Location: Brighton


PostPosted: Wed Jun 26, 2019 7:23 pm    Post subject: Reply with quote

Can i ask a question as im seriously confused .. i'm the first to admit mods and me just dont work , too many years fixing the standard cars im afraid .

You are fitting 6 throttle bodys instead of one .. does this allow better air flow to individual cyls ?

I assume the maf will be fitted to a pipe where the original throttle would have been but i'm struggling to see a difference 6 throttles will make over one large one .. and the adjustment for each would need to be perfect.

A lot of work and parts to gain something the system already does ?

Best i can think of is air flow for each cyl would increase a small amount but this is way beyond what i can get my head around .. sorry .

Also thank you .
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Dammit
Watkins Glen


Joined: 23 Sep 2016
Posts: 2235



PostPosted: Wed Jun 26, 2019 7:37 pm    Post subject: Reply with quote

I'm far from an expert, but:

- Throttle response, with each throttle butterfly positioned very close to the intake valve, is very sharp
- You can run much lumpier cams than with a single large throttle
- The ITB butterfly is 50mm wide, which gives an area of 19.63cm per throttle, or ~118cm in total
- A single 82mm throttle gives an area of 53cm, less than half that of the ITB's
- They sound awesome
- If you can see them they look extremely cool
- You'd normally run alpha-n with ITB's, rather than have a MAF in the airflow
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7004
Location: Brighton


PostPosted: Wed Jun 26, 2019 7:45 pm    Post subject: Reply with quote

Dammit wrote:
I'm far from an expert, but:

- Throttle response, with each throttle butterfly positioned very close to the intake valve, is very sharp
- You can run much lumpier cams than with a single large throttle
- The ITB butterfly is 50mm wide, which gives an area of 19.63cm per throttle, or ~118cm in total
- A single 82mm throttle gives an area of 53cm, less than half that of the ITB's
- They sound awesome
- If you can see them they look extremely cool
- You'd normally run alpha-n with ITB's, rather than have a MAF in the airflow


Thank you .. it helps but ..

- You'd normally run alpha-n with ITB's, rather than have a MAF in the airflow .. i have no idea what that means
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Dammit
Watkins Glen


Joined: 23 Sep 2016
Posts: 2235



PostPosted: Wed Jun 26, 2019 7:50 pm    Post subject: Reply with quote

Sorry, alpha refers to throttle angle, n is rpm - essentially you map the car on a dyno so the ECU knows, for a specific throttle angle and engine speed, what fuel and spark is required. You also need to know air temperature/density, so you can fuel accordingly.

It removes the MAF from airflow, meaning that when the butterflies are fully open there's nothing in the way of the airflow.
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7004
Location: Brighton


PostPosted: Wed Jun 26, 2019 7:58 pm    Post subject: Reply with quote

Aghhh you remove the maf and use a TPS to take its place with a set map in the dme .

Im guessing dme for altitude , its in built , ambient air temp sensor covers the temp .

clever .

Thank you .
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Dammit
Watkins Glen


Joined: 23 Sep 2016
Posts: 2235



PostPosted: Wed Jun 26, 2019 8:01 pm    Post subject: Reply with quote

Air-cooled, so sounds a bit tractor-tastic, but you get the idea:

https://www.youtube.com/watch?v=r5-Q5OHqiGc
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kurlykris
Indianapolis


Joined: 30 Jun 2014
Posts: 2489
Location: Warwickshire


PostPosted: Wed Jun 26, 2019 8:45 pm    Post subject: Reply with quote

Dammit wrote:
Air-cooled, so sounds a bit tractor-tastic, but you get the idea:

https://www.youtube.com/watch?v=r5-Q5OHqiGc


Wow, that sounds fab Grin
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2010 Mercedes E350 AMG Sport

 
  
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Mad Mark911
Silverstone


Joined: 16 Dec 2011
Posts: 127
Location: Maidenhead


PostPosted: Sun Jun 30, 2019 8:16 am    Post subject: Reply with quote

Great thread - I've just read all 40 pages and I'm both in awe and quite jealous! worship
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NedHan79
Nürburgring


Joined: 08 Nov 2018
Posts: 487



PostPosted: Sun Jun 30, 2019 8:24 am    Post subject: Reply with quote

The info in this thread is first class for the rest of us.

I love it Thumb
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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7161
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Wed Jul 03, 2019 8:32 pm    Post subject: Reply with quote

Thanks for the kind words guys. Progress has been a bit slow recently, things are going on in the background on the engine front, and hopefully soon on the bodywork, but nothing fun to share. I'm up to my elbows in doing an air con overhaul on an old Merc whilst the garage was free.....

I have put together a short video of my attempts with a stud extractor on the M96 engine exhaust studs. I'll do another one for using the Stomski jig when that arrives.


Open Youtube Page


MC

Edited to update link to new version of video.

Last edited by MisterCorn on Sat Jul 06, 2019 12:48 pm; edited 1 time in total
 
  
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wasz
Sepang


Joined: 28 Dec 2012
Posts: 2958


1999 Porsche 996 Carrera 2

PostPosted: Thu Jul 04, 2019 12:11 pm    Post subject: Reply with quote

This is great! You seem to repeat the first minute or so though.

Really helps in knowing whats likely to come out.

What brand of extractor did you use?

Cheers.
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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7161
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Thu Jul 04, 2019 12:40 pm    Post subject: Reply with quote

Thanks for the note on the video, I'll check that when I get a chance and correct it. It was a Laser impact stud extractor.



I might get the smaller one as well, to try on the stud that this one was slipping on.

Things are happening on the bodywork finally.



MC
 
  
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maldren
Suzuka


Joined: 07 Oct 2016
Posts: 1122



PostPosted: Thu Jul 04, 2019 5:56 pm    Post subject: Reply with quote

It might be interesting to try it with an impact driver, a lighter weight cordless model rather than the heavy duty mains models that rip things apart!
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2003 996.2 C2 Coupe Arctic Silver
 
  
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TurboRob
Trainee


Joined: 18 Feb 2019
Posts: 71



PostPosted: Thu Jul 04, 2019 7:07 pm    Post subject: Reply with quote

Fantastic thread MC - enjoying checking in and reading your progress
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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7161
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Sat Jul 06, 2019 12:58 pm    Post subject: Reply with quote

wasz wrote:
This is great! You seem to repeat the first minute or so though.

Really helps in knowing whats likely to come out.

What brand of extractor did you use?

Cheers.


Video updated to remove the repeated section and add details of the extractor. Link updated.

MC
 
  
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T8
General
General


Joined: 29 Jun 2010
Posts: 15783
Location: Kent


PostPosted: Sat Jul 06, 2019 2:09 pm    Post subject: Reply with quote

MisterCorn wrote:


Things are happening on the bodywork finally.





Blimey, this project hasn't half aged you. Grin
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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7161
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Sat Jul 06, 2019 3:12 pm    Post subject: Reply with quote

T8 wrote:
MisterCorn wrote:


Things are happening on the bodywork finally.





Blimey, this project hasn't half aged you. Grin


Not really, you just haven't seen me in my work gear without having done my hair and makeup before.

MC
 
  
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