[Zmagnette] Stub stacks

[John Park]

Depending on length it can produce a much smoother flow, some say a bit of a
ram effect which increases power and torque . Longer stacks as in longer
runners means more torque while shorter ones mean more power.  Not lots, but
it all contributes to a freer flowing intake which helps your freer flowing
exhaust to make a bit more power/torque and slightly better fuel economy.
You note vintage racers usually have anywhere from2.5 to 6 inch stacks. Some
with a stocking for a coarse filter, most just hoping nothing of consequence
enters the throat. I have a set of 2.25 inch stacks in my 3.25 inch K&N's on
my MGB and they seem to help. Just the ho hum stock setup on my Magnette.

 

From: zmagnette-bounces at autox.team.net
[mailto:zmagnette-bounces at autox.team.net] On Behalf Of Richard Greenberg
Sent: Wednesday, November 13, 2013 12:34 PM
To: List for the Z Magnette Group - North America
Subject: Re: [Zmagnette] Stub stacks

 

What is a stub stack? Would it allow for a filter that lies closer to the
engine than a regular pancake filter?

 

On Nov 13, 2013, at 9:53 AM, Allen Bachelder wrote:





I've always just used the item #54 from the Moss catalog:
http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=28996#top  Are
these from APT or Rimmer better?

 

Always anxious to learn...

Allen

****************************************************************

Allen & Florrie Bachelder       =iii=<
Spring Creek Home for Wayward MGs

'57 ZB, '65 B, '69 C/GT, '73 B/GT

North Street, MI 48049, USA

http://www.mgexperience.net/member/bachldrs

****************************************************************

 

On Nov 13, 2013, at 4:10 AM, monster at caverock.net.nz
<mailto:monster at caverock.net.nz>  wrote:





Hi everyone,

I'd like to get a pair of 1.5" H4 stub stacks and I've tried emailing Steve
Ash several times to see if he would make some more, but I haven't got an
answer from him.

So... from a light scour of the internet there appears to be two types
available at a reasonable cost:
$32.50 ea -
http://www.aptfast.com/ShowItem/101221%20Billet%20Alloy%20Stub%20Stack%20SU%
20HS4.aspx
$57 pair - http://www.rimmerbros.co.uk/Item--i-RL1396ALT

I've excluded the K&N ones as they are very rough, by all accounts.
Are there any others that people would recommend?

They're going to fit inside K&N filters that are 2 1/8" thick.

regards,
-- 
Robert (in NZ)
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