UK & Ireland S2000 Community Discussions related to the S2000, its ownership and enthusiasm for it in the UK and Ireland. Including FAQs, and technical questions.

Throttle Body - Difference

Thread Tools
 
Old Sep 7, 2014 | 01:42 AM
  #1  
bruceski's Avatar
Thread Starter
Registered User
 
Joined: Aug 2013
Posts: 468
Likes: 0
From: Newcastle Upon Tyne, UK
Default Throttle Body - Difference

I have been looking at a Skunk2 throttle body for the S and there seems to be 2 variants

1) Skunk2 Alpha Series: https://www.tegiwaimports.com/select...-f-series.html

2) Skunk2 Pro Series: https://www.tegiwaimports.com/select...-f-series.html

Now apart from price, nearly £100, can anyone shed any light on the differences. Is there any merit to getting the Pro over the Alpha?

Thanks in advance.
Reply
Old Sep 7, 2014 | 02:24 AM
  #2  
markforrester99's Avatar
10 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Apr 2012
Posts: 1,761
Likes: 41
From: Hertfordshire
Default

I brought the cheaper one and it was a complete and utter waste of money. The car needs to be remapped to get the most out of it. Unless you have an aftermarket ecu i would leave well alone
Reply
Old Sep 7, 2014 | 02:38 AM
  #3  
bruceski's Avatar
Thread Starter
Registered User
 
Joined: Aug 2013
Posts: 468
Likes: 0
From: Newcastle Upon Tyne, UK
Default

Originally Posted by markforrester99
I brought the cheaper one and it was a complete and utter waste of money. The car needs to be remapped to get the most out of it. Unless you have an aftermarket ecu i would leave well alone
I already have the aftermarket ecu and getting a remap in a couple of weeks so would potentially be doing this beforehand.
Reply
Old Sep 7, 2014 | 03:52 AM
  #4  
noodels's Avatar
 
Joined: Nov 2013
Posts: 6,331
Likes: 615
From: Norfolk UK
Default

The size of the throttle body controls the velocity of the air. Smaller throttle bodies make the air go faster, larger throttle bodies make the air move slower. Since the velocity of the air is limited to the speed of sound, which is 767.58 mph (miles per hour) or 67547.4 fpm (feet per minute), a throttle body which is too small could limit air flow in the engine. If throttle body size is too large for a particular engine, the air will move too slowly and reduce power.
Reply
Old Sep 7, 2014 | 05:00 AM
  #5  
b000n's Avatar
Registered User
 
Joined: Aug 2013
Posts: 179
Likes: 0
Default

Bruce get the spoon one pal
Reply
Old Sep 7, 2014 | 05:11 AM
  #6  
bruceski's Avatar
Thread Starter
Registered User
 
Joined: Aug 2013
Posts: 468
Likes: 0
From: Newcastle Upon Tyne, UK
Default

Originally Posted by b000n
Bruce get the spoon one pal
Spoon may be awesome but £600 more awesome? I am skeptical. The Skunk2 one is £120 where as the spoon one is £700

http://www.spoonsportseurope.net/pro...0-ap1-040.html
Reply
Old Sep 7, 2014 | 05:37 AM
  #7  
bruceski's Avatar
Thread Starter
Registered User
 
Joined: Aug 2013
Posts: 468
Likes: 0
From: Newcastle Upon Tyne, UK
Default

Originally Posted by noodels
The size of the throttle body controls the velocity of the air. Smaller throttle bodies make the air go faster, larger throttle bodies make the air move slower. Since the velocity of the air is limited to the speed of sound, which is 767.58 mph (miles per hour) or 67547.4 fpm (feet per minute), a throttle body which is too small could limit air flow in the engine. If throttle body size is too large for a particular engine, the air will move too slowly and reduce power.
The standard Intake manifold has a bore of 69mm and the standard throttle body size is 65mm

The Skunk2 has a bore of 70mm. Surely the best approach would be to port match the existing intake manifold to the 70mm of the Skunk2 throttle body.
Reply
Old Sep 7, 2014 | 07:50 AM
  #8  
tozerman's Avatar
 
Joined: Oct 2011
Posts: 1,295
Likes: 22
From: Biffins Bridge or the Windy
Default

Originally Posted by bruceski
The standard Intake manifold has a bore of 69mm and the standard throttle body size is 65mm

The Skunk2 has a bore of 70mm. Surely the best approach would be to port match the existing intake manifold to the 70mm of the Skunk2 throttle body.
I tend to agree with this, however me thinks it will be quite a big job as surely you will need to remove the inlet manifold.
Are there any spacers available to avoid removing the manifold ?

good luck.
Reply
Old Sep 7, 2014 | 08:08 AM
  #9  
Vtechead's Avatar
Registered User
 
Joined: Nov 2012
Posts: 33
Likes: 1
From: South Wales
Default

Originally Posted by bruceski
Originally Posted by noodels' timestamp='1410090761' post='23319715
The size of the throttle body controls the velocity of the air. Smaller throttle bodies make the air go faster, larger throttle bodies make the air move slower. Since the velocity of the air is limited to the speed of sound, which is 767.58 mph (miles per hour) or 67547.4 fpm (feet per minute), a throttle body which is too small could limit air flow in the engine. If throttle body size is too large for a particular engine, the air will move too slowly and reduce power.
The standard Intake manifold has a bore of 69mm and the standard throttle body size is 65mm

The Skunk2 has a bore of 70mm. Surely the best approach would be to port match the existing intake manifold to the 70mm of the Skunk2 throttle body.
Why didn't Mr Honda just match the port sizes in the first place. Something tells me there's a lot more to it.
Reply
Old Sep 7, 2014 | 01:10 PM
  #10  
markforrester99's Avatar
10 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Apr 2012
Posts: 1,761
Likes: 41
From: Hertfordshire
Default

My main issue with the throttle body was that to me it offered no gains. With the OEM throttle as you push the pedal more you get a progressive feeling all the way to full throttle. You can feel it actually changing the engines note and performance. With the larger one once you get to about 50% throttle its flowing enough air even for the engine at 9000rpm, you push it down further and it makes no difference. I didnt like the feeling of that compared to the OEM throttle.

People do port the manifold in situ but its not something i would recommend.
Reply



All times are GMT -8. The time now is 09:28 PM.