[DeTomaso] Pantera Air Cleaner

[MikeLDrew at aol.com]

In a message dated 7/21/15 17 47 17, michaelsavga at gmail.com writes:


> 
> http://www.carid.com/knn/xstream-air-cleaner-assembly-3-1-8-height-mpn-66-3050.html?gclid=CJbG_rfB7cYCFZYWHwodBE8JuQ
> 
> 

>>>Somebody (I think it was here?) posted a link to objective testing which 
revealed that the pleated air cleaner lid actually reduced horsepower when 
compared with the same filter and a solid lid, which sounds 
counterintuitive.   Apparently the airflow is disrupted somehow with the pleated lid?

A quick Google search found some oblique references.   From a Hot Rod 
magazine article:

Also interesting is that Westech's Steve Brule mentioned that on previous 
dyno tests with the XStream Air Flow Top that it seems to work best when 
combined with flat-base air cleaner assemblies. Conversely, he has seen a slight 
power loss when the same lid is combined with drop-base air filter 
assemblies. We did not test a drop-base air filter assembly to verify this point.

>From a drag race forum:

Edelbrock Drop base, with k&n filter and lid 400 SBC with Edelbrock AVS 
800. Filter top is approx 1-3/8 above choke top.

K&N 14x3 with chrome top: 12.157 @ 111.92 60ft 1.777
Same filter with Xtreme top: 12.301 @ 111.46 60ft 1.850
back to chrome top: 12.159 @ 112.03 60ft 1.805

I logged the runs with my LM2. I did notice that the mixture richened up 
about .3 with the xtreme top, which tells me that I was actually hurting air 
into the carb. The lid also caused a hard bog off the line, which you can see 
in the 60 ft time and ET. No stumbles with standard top.

And so on and so forth.   I can't find the link to the article/test that 
I'm thinking of though.   I do remember it was very illustrative and 
definitive--and surprising to me.

Mike
-------------- next part --------------
   In a message dated 7/21/15 17 47 17, michaelsavga at gmail.com writes:

     http://www.carid.com/knn/xstream-air-cleaner-assembly-3-1-8-height-m
     pn-66-3050.html?gclid=CJbG_rfB7cYCFZYWHwodBE8JuQ

   >>>Somebody (I think it was here?) posted a link to objective testing
   which revealed that the pleated air cleaner lid actually reduced
   horsepower when compared with the same filter and a solid lid, which
   sounds counterintuitive.  Apparently the airflow is disrupted somehow
   with the pleated lid?
   A quick Google search found some oblique references.  From a Hot Rod
   magazine article:
   Also interesting is that Westech's Steve Brule mentioned that on
   previous dyno tests with the XStream Air Flow Top that it seems to work
   best when combined with flat-base air cleaner assemblies. Conversely,
   he has seen a slight power loss when the same lid is combined with
   drop-base air filter assemblies. We did not test a drop-base air filter
   assembly to verify this point.
   From a drag race forum:
   Edelbrock Drop base, with k&n filter and lid 400 SBC with Edelbrock AVS
   800. Filter top is approx 1-3/8 above choke top.
   K&N 14x3 with chrome top: 12.157 @ 111.92 60ft 1.777
   Same filter with Xtreme top: 12.301 @ 111.46 60ft 1.850
   back to chrome top: 12.159 @ 112.03 60ft 1.805
   I logged the runs with my LM2. I did notice that the mixture richened
   up about .3 with the xtreme top, which tells me that I was actually
   hurting air into the carb. The lid also caused a hard bog off the line,
   which you can see in the 60 ft time and ET. No stumbles with standard
   top.
   And so on and so forth.  I can't find the link to the article/test that
   I'm thinking of though.  I do remember it was very illustrative and
   definitive--and surprising to me.
   Mike