[Healeys] dumb question ...

[Dan Stromquist]

Thanks Rick:
I am personally running the rich UN needles because the prior shop said I
needed to.  Now that I know how to set the BJ8 carbs, I am wondering whether
they were right or not.  They had it way out of tune.  About all I do when
setting the carb is to get the settings correct at idle so the needles
should make no diff if they are the same diameter at idle. After that the
tuneup needles in the dashpots go up and down in sync as I increase the
RPMs.  I suppose if it was put on a DYNO, or put an O2 meter on the exhaust,
or by one of the other methods we could find a better needle match at all
the other RPMs. 
Dan


-----Original Message-----
From: Eric (Rick) Wilkins [mailto:e-wilkins at cox.net] 
Sent: Saturday, May 08, 2010 3:53 PM
To: Dan Stromquist
Cc: healeys at autox.team.net
Subject: Re: [Healeys] dumb question ...


I just checked the application lists for BJ8, The "standard" needle is  
a UH, the rich needle is UN.

UH     UN
.124  .124
.104  .1006
.084  .0806

Wilko




On May 7, 2010, at 1:46 PM, Dan Stromquist wrote:

> Bob:
> I asked the same question and was told the needle circumference  
> enriched the
> mixture only at higher RPMs and that at idle or near idle the needle  
> was the
> same as standard.
> Dan
>
>
>
> -----Original Message-----
> From: healeys-bounces at autox.team.net
[mailto:healeys-bounces at autox.team.net 
> ]
> On Behalf Of Bob Spidell
> Sent: Thursday, May 06, 2010 4:24 PM
> To: healeys at autox.team.net
> Subject: [Healeys] dumb question ...
>
> A 'UN' (rich) SU needle should enrichen the mixture compared to a  
> standard
> needle, correct?
>
>
> bs
>
> --------------------------------
> Bob Spidell - San Jose, CA
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