[Spridgets] Racer types, Carb help please!

[Lester]

Sorry.. misunderstanding, I have retrofitted the oil reservoir pistons ONLY..



Lester


On Jun 9, 2012, at 12:24 AM, GUY DAY wrote:

> Lester,
>
> Yes.  Filing the needles was something that happened and if they were done
in the wrong place or too much you could get that result.  However, you say
you have retrofitted stock carbs and are still getting a high tickover (?)
>
> Have you checked for an air leakage around the joints with the inlet
manifold - both carb and engine sides?  Together with leakages around the
spindles.  Some say give the joints a squirt with WD40 or similar and listen
for a change in engine note but I would use a length of piping stuck in my ear
and move that around to listen for the hiss of moving air.
>
> If you haven't got it already, you may find the attachment useful.
>
> Guy R Day
>
>
>
> ----- Original Message ----- From: "Lester" <oldsaabguy at comcast.net>
> To: <bugeye at yahoogroups.com>; "Spridget list" <spridgets at autox.team.net>
> Sent: Friday, June 08, 2012 11:17 PM
> Subject: [Spridgets] Racer types, Carb help please!
>
>
>> Hi all,
>>
>> so I have this little problem with the carbs and I ask your help, but first
a
>> little history..
>>
>> I purchased this 1380 go fast engine about 2 (?) years ago. Freshly built
with
>> the carbs mounted.  I have never gotten around to tuning everything until
>> recently, hat means this morning.  Messed with the timing a bit and tried
to
>> adjust the carbs.  I can not get them to idle slowly, hmm.. they idle at
3000
>> revs.  These are later carbs for a 1275 that have been warmed over a lot
I'm
>> guessing.
>>
>> And here is my question:  Could someone have filed or otherwise altered
the
>> needles so much that no matter what I do the carbs could pull enough fuel
by
>> to idle at 3000 revs.  I have already noted that the "piston" at the end
of
>> the oil reservoir (the one that comes out when you check the carb oil
level)
>> was removed and the rod ground to a point, I have retrofitted stock ones
and I
>> can imagine no other scenario that would allow the high rev at idle.
>>
>> Yes, I have disconnected each carb from the common shaft
>>
>> Yes, I have backed out the idle speed screws all the way out
>>
>> Yes, I have confirmed that the choke is not holding the jets open
>>
>> Any ideas oh wizards of the SU?
>>
>> Lester
>> ------------------------
>>
>> spridgets at autox.team.net
>>
>> Donate: http://www.team.net/donate.html
>> Suggested annual donation: $12.75
>>
>> Archive: http://www.team.net/archive
>> Forums: http://www.team.net/forums
>> Unsubscribe/Manage:
http://autox.team.net/mailman/options/spridgets/grday@btinternet.com
> <Tuning_SU_Carbs.pdf>