[ROVERNET - UK] Long winded diatribe on profiling SU needles

[Slatskars]

The Haynes SU Carburetors Book has a long list of needle specifications and 
applications information in it, including Rovers.

It sounds to me as though you are probably in need of new throttle shafts 
and bushings to cure an air leak at that point. This is really the primary 
wear item on these carbs.

Slats
Vancouver, WA, USA
----- Original Message ----- 
From: "Paul Smith" <Paul.Smith at auroraenergy.com.au>
To: <rovernet at lyris.ccdata.com>
Sent: Tuesday, November 23, 2004 1:42 PM
Subject: RE: [ROVERNET - UK] Long winded diatribe on profiling SU needles


> You really should get 25mpg out of a TC, even on US gallons.
> Does your TC have HD8 or HS8 carbs?  Mine has HD8 and they Definitely need
> needle profiling, Always too lean at idle.  Static ign timing on unleaded
> should be about 5BTDC.
>
> My uncle changed his HS8s, I might have what he did, but he didn't change
> the top 2 stations from memory.
>
> PVS
>
> -----Original Message-----
> From: Philip Clendaniel [mailto:p.clendaniel at comcast.net]
> Sent: Wednesday, 24 November 2004 2:25 am
> To: rovernet at lyris.ccdata.com
> Subject: [ROVERNET - UK] Long winded diatribe on profiling SU needles
>
>
> This post was timely for me due to my current fuel consumption situation.
> However, I suspect that the problem I'm having needs more of a sledge 
> hammer
> approach.  After repeated attempts at mixture/idle speed adjustment, I'm
> only getting 10-11 mpg.  Idle is smooth, but starting a warm engine is
> difficult, indicating a rich mixture.  But attempts to lean out the 
> mixture
> result in extremely rough idle, to the point of stalling.
>
> Also, the piston-lift method of checking the mixture doesn't seem to work 
> as
> expected; rather than the slight speed-up you would normally get with a 
> rich
> mixture, I get no change in engine speed, either up or down.
>
> Given the current inflated price of gasoline, any suggestions as to how to
> approach this (short of a complete carb rebuild) will be greatly
> appreciated.
>
>
> Philip Clendaniel
>
> 1968 2000TC (converted to 2200)
>
>
>
>
>
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