[ROVERNET - UK] SU needle valve interchange MGC and P6 2000TC

[Vern Klukas]

Caught me, Slats

I'm pretty sure I meant HS6 ;-)

Yours
Vern




>HS-5???? A rare one!
>
>Slats
>----- Original Message ----- From: "Vern Klukas" <vern at inkspotco.com>
>To: <rovernet at lyris.ccdata.com>
>Sent: Tuesday, August 14, 2007 11:43 AM
>Subject: Re: [ROVERNET - UK] SU needle valve interchange MGC and P6 2000TC
>
>>HD carbs have free floats, but the needle valve is operated by a 
>>hinged lever.
>>
>>HS carbs have hinged floats.
>>
>>Needle valves are the same for pretty much all HD and HS carbs, the 
>>one proviso being that you check the bore of the seat. A valve from 
>>a HS5 carb will have a smaller bore than a HS8 carbs, which leads 
>>to running the bowls dry a highway speeds or sustained work.
>>
>>Yours
>>Vern
>>
>>
>>
>>
>>>69 TCs had HS8
>>>Early TCs had HD8, like my 68.  The floats are hinged though.
>>>
>>>PVS
>>>
>>>----- Original Message ----- From: "Slatskars" <slatskars at comcast.net>
>>>To: <rovernet at lyris.ccdata.com>
>>>Sent: Tuesday, August 14, 2007 4:49 PM
>>>Subject: Re: [ROVERNET - UK] SU needle valve interchange MGC and P6 2000TC
>>>
>>>>Nathan,
>>>>
>>>>I am thinking that you have "H" or "HD" type SU's rather than 
>>>>"HS" type. The "H's" and "HD's" are the only ones with a free 
>>>>floating float. The float needles should be the same no matter 
>>>>what the size. You really do need to determine what type of 
>>>>carburetors that you do have. I have vehicles with all four types 
>>>>of SU's and know them reasonably well.
>>>>
>>>>A single HD-8 is used on 3 liter P-5's. Some models of Jaguar use 
>>>>dual HD-8's. A good source of information would be Moss motors as 
>>>>they stock parts for Jaguars also. I personally have had good 
>>>>luck with gross jets. I had a brand new set of H-4's that one of 
>>>>them would flood. I cleaned and checked the float needle everyway 
>>>>possible, but could not get it to function properly. Changed them 
>>>>over to Gross Jets and the problem went away. The car never ran 
>>>>smoother.
>>>>
>>>>Slats
>>>>----- Original Message ----- From: "Nathan Obuch" <nathanobuch at yahoo.com>
>>>>To: <rovernet at lyris.ccdata.com>
>>>>Sent: Monday, August 13, 2007 6:40 PM
>>>>Subject: [ROVERNET - UK] SU needle valve interchange MGC and P6 2000TC
>>>>
>>>>>Greetings, Rovernetters,
>>>>>
>>>>>I have a '69 TC with HS8 carbs (AUD254.) I am having
>>>>>trouble with my float bowls overflowing...the floats
>>>>>haven't sunk, so I'm pretty sure I need new needle
>>>>>valves. I noticed that the MGC also uses HS8's, so I
>>>>>was just thinking of ordering needle valves from
>>>>>Victoria British. I also noticed that in the
>>>>>illustration for the MGC, the floats are hinged to the
>>>>>float bowl lids, where as on my Rover, the floats are
>>>>>free floating- so I'm concerned that the needle valves
>>>>>might be different.
>>>>>
>>>>>Does anyone have a definitive answer?
>>>>>
>>>>>Nathan
>>>>>
>>>>>
>>>>>
>>>>>____________________________________________________________________________________
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>>>>
>>>>
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>>>>
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>>>>
>>>
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>>
>>
>>--
>>Vern Klukas                             I'm a little . . .
>>Inkspot Type & Design
>>vern at inkspotco.com
>>
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>
>
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-- 
Vern Klukas                             I'm a little . . .
Inkspot Type & Design
vern at inkspotco.com