The Cal-look Lounge

Cal-look/High Performance => Pure racing => Topic started by: leec on August 05, 2017, 13:22:40 pm



Title: CB Performance rotary pump capabilities?
Post by: leec on August 05, 2017, 13:22:40 pm
I have used successfully the CB Performance rotary 3.5psi pump on my 2276cc oval. I like it as it doesn't require a separate regulator.

Thinking about what pump to run on the Notch, initially running a 230-240 bhp normally aspirated motor. Will the CB pump cope with that?

Lee


Title: Re: CB Performance rotary pump capabilities?
Post by: flatfire on August 06, 2017, 10:46:37 am
I have used a rotary pump for years. Was having lots of problems with my new motor running 48idas. Before I hooked up the rotary I replaced the filter. Curious as ever I cut it in half and it was pretty clogged up. Sucking out of ancient petrol tanks😊. Anyway I attached a gauge to check the pressure it was bang on 3psi after all these years. I measured flow into a jug more than enough for a 200hp engine.


Title: Re: CB Performance rotary pump capabilities?
Post by: neil68 on August 08, 2017, 04:30:38 am
I received a pm on another forum, from someone who mentioned to me that switching from the CB Carter rotary pump to another pump (I believe a Holley) moved their Beetle from stubborn low 12's to well into the 11's in the 1/4-mile first time out.


Title: Re: CB Performance rotary pump capabilities?
Post by: leec on August 08, 2017, 08:12:52 am
That's interesting. Wonder why that would make so much difference?
Lee


Title: Re: CB Performance rotary pump capabilities?
Post by: jim martin on August 09, 2017, 06:08:02 am
Was most likely running bowls low .
Now new pump keeps them full , no more lean due to low fuel level


Title: Re: CB Performance rotary pump capabilities?
Post by: richie on August 09, 2017, 09:06:11 am
No


Title: Re: CB Performance rotary pump capabilities?
Post by: leec on August 09, 2017, 09:38:02 am
Thanks guys,
Looks like a new pump is required. What colour Holley is needed for Ida's?
Is there a better alternative?

Lee


Title: Re: CB Performance rotary pump capabilities?
Post by: Lids on August 09, 2017, 22:20:40 pm
i like the mallory pump and matching regulator (return style)