[Healeys] SU Needles & OIL ( or lack of )

[Keith Taylor]

G'day Mark
My current needle is OA7 the spring is Red but my plugs are still black &
sooty It will idle ok but not super smooth .
By swapping to OA8 (lean) needles I am hoping to rectify my problem
The car has 23 miles from a complete rebuild including carbys rebuilt buy
SU Midell ( the local SU Distributors)
I am running NGK BP6ES-11 plugs
Thanks  Keith

On 25 June 2015 at 07:27, Mark Donaldson <ardmorebusiness at xtra.co.nz> wrote:

>    Keith,
>
>
>
> I want to make sure you know that the standard needle for a 100M is the
> OA7.  The OA6 is the rich needle.
>
> Make sure too that your spring is RED, not the standard yellow one as
> fitted to the BN1 and BN2.
>
> The increased compression ratio should have no affect at all on your
> mixture.
>
>
>
> Mark
>
> Ardmore, NZ
>
>
>  ------------------------------
>
> *From:* Keith Taylor [mailto:ktee20 at gmail.com]
> *Sent:* Wednesday, 24 June 2015 6:37 p.m.
> *To:* healeys
> *Subject:* [Healeys] SU Needles & OIL ( or lack of )
>
>
>
> G'Day
>
>
>
> Problem 1
>
>
>
>  I have a BN2 with Le Mans upgrades ,  1 3/4 carbys with OA6 needles &
> the car is running very rich,
>
> I have ordered weaker OA8 needles hoping to sort out this problem ..
> However this car has flat top pistons hence much higher compression .
>
> Am I going down the right road .
>
>
>
> Problem 2
>
>
>
> This car left standing overnight ,on startup has a severe bearing rattle ,
> my long time mechanic ( retired, read old ex BMC man)  is of the opinion
>
> that the spin off filter non-return is failing The oil release valve seems
> to be in good condition. Startup now is to crank over without starting
>
>  to get oil pressure up then fire up , Subsequent startups are not a
> problem
>
>
>
> Keith Taylor
>
> Southern Highlands OZ
>
>
>
> BN1
>
> BN2
>
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