[TPR] Asa's 3310-2 carb rebuild

[Asa Jay Laughton]

Alright,
Warmed up the Pantera in the garage to get a vacuum reading.  I'm 
getting ready to order all my parts and need to know what size power 
valves to get.

Stock are 6.5
My vacuum reads 10, which means I should get 4.5 power valves, but that 
seems too low to me.  I think the reading of 10 isn't right.  I had 
thought when properly tuned, I get more like 11 to 13.  This is -not- a 
radical rebuild and I wouldn't expect the vacuum to be that low, thought 
it does seem to idle there, albeit a bit rough.

I also found a vacuum leak which is probably contributing to my troubles 
and might explain a few other things.  Once I plugged that, I read 10.  
I think I might be more comfortable buying 5.5 power valves.

Opinions from the knowledge brains?
Asa  Jay

Asa Jay Laughton - W7TSC, MSgt, USAFR, Retired
&  Shelley Marie
Spokane, WA
******************************
http://www.racingagainstautism.com
http://www.teampanteraracing.com
http://facebook.com/racingagainstautism


On 7/26/2015 6:21 PM, Asa Jay Laughton via TPR wrote:
> Alright gang, here we go.  This will of course take a few days due to 
> other things that will invariably get in the way, like the fact a one 
> gallon can of carb clean will -not- fit a Holley throttle body or base 
> plate through the opening in the top.  So, as I did some 20 years ago, 
> I'll buy the five gallon container, it works a whole lot better.
>
> Today, I completely disassembled the carb.  I'll have more details and 
> photos posted to the TPR site later.  For now, I found it has #72 jets 
> in the primary circuit and #76 in the secondary.  Both power valves 
> are #65 (meaning they cut in at about 6.5" of vacuum).  The throttle 
> plate appears to -not- have the check valves for preventing power 
> valve blow-out.  I found info on that mod and will see if this base 
> plate can take that mod.
>
> The gaskets were definitely dry, it took a bit of patience to separate 
> all the pieces but I did manage.  I checked and most all the parts I 
> need to do the rebuild are not to be found locally so I'll be placing 
> an order with Summit shortly.
>
> Are we having fun yet?  :)
> Asa  Jay
>