[Spridgets] SU's & Webers...

[Dave G.]

Hi Bill,

I'm just using the stub-staks right now. I'll consider putting the stacks back on 
when the engine has been set up per the book and I've solve the slight burning 
oil problem....

As you know, the primary job of stub stacks is to reduce the air flow turbulence 
before it hits the SU venturi and are supposed to be good for a 'free' 2-3 BHP 
increase.

A secondary effect is to act as part of the "tuned" system formed by the intake, 
combustion chamber  and exhaust...

When we were racing Mini's we found that, depending on the length, Ram 
stacks were good for more HP and brought the power and torque in at lower 
rpms'.
Ramstacks are really just stub stacks with a longer tube welded on... but make 
sure the open end has a really good 'bell' shape on it... having the edges rolled 
over is even better  ;-))

Does this help??

Also, if you are going to the ABFM, I'm looking for two bits to secure the 
freshair/heater tube... 
On page 77 of the Brit-Vic catalogue, I'm looking for the part numbered 46 and 
the part above the number 53 in the diagrams...
If you happen to find them, I'd be more than willing to compenstae you for your 
time. trouble nd expense...
Or, if you have a suggestion of how I can secure the air tube to the from mud 
panel.....
  
TIA

Dave G

On 21 Jul 2008 at 20:42, Bill L wrote:
>>      i have deep enough K&Ns for the 1 1/2" stacks but right now i'm
>>      running 1/2" stubs.. .. .. is there really a difference?.. should
>>      i put the taller stacks back in?... (i own both sizes)


--
Dave G.   KK7SS
'65 MK III Sprite in Richland, WA

The Original Point and Click  --- Smith and Wesson....