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Re: [Tigers] Carburetor input

To: "'Terry Lawell'" <tlawell@austin.rr.com>
Subject: Re: [Tigers] Carburetor input
From: Ron Fraser via Tigers <tigers@autox.team.net>
Date: Wed, 21 Apr 2021 23:04:12 -0400
Cc: tigers@Autox.Team.Net
Delivered-to: mharc@autox.team.net
Delivered-to: tigers@Autox.Team.Net
References: <FEBFFE33-35D3-4718-BCB0-D287E5B94167@comcast.net> <14FF3CA3-5074-427D-B196-E99EA28039E4@elams.org> <6080D2DA.1030206@austin.rr.com>
Thread-index: AQGPfwf765HXt7T0g8XjG5EHbV+WGAGhs9KfAqawd+erLQSp4A==
Terry
        The Shop Manual indicates that the Tiger SU fuel pump delivers 15 Gal/ 
hour.
That rate of fuel is adequate for about 200 HP so it easily covers the fuel 
requirements for the MK I and Mk II.

I believe the Tiger's 5/16" fuel line has the capacity to supply up to 300 HP, 
around 400 HP you need 3/8" line to supply adequate amount of fuel.
Ron Fraser

-----Original Message-----
From: Tigers <tigers-bounces@autox.team.net> On Behalf Of Terry Lawell via 
Tigers
Sent: Wednesday, April 21, 2021 9:35 PM
To: tigers@autox.team.net
Subject: Re: [Tigers] Carburetor input

Thanks for the inputs. The volume on this pump is 38 gal/hr and I think the 
standard su is about 28gal/hr, so that should not be a problem. I will probably 
install a good regulator and set the psi to about 5psi.
On 4/21/21, 4:54 PM, H B Elam via Tigers wrote:
> Have used both Holly and parts store standard. My problem had been fuel boil 
> over after returning to garage. It seemed that the boil over defeated the 
> float valve and emptied that float chambers. I solved the problem with heat 
> spacers from a guy out of Pittsburgh.
>
> Regards,
> Harry
>
>> On Apr 21, 2021, at 5:48 PM, Gary <garywinblad@comcast.net> wrote:
>>
>> Harry,
>> What kind of check valves?
>> Photos?
>> Thanks,
>> Gary
>>
>>
>> Sent from my iPhone
>>
>>> On Apr 21, 2021, at 2:09 PM, H B Elam via Tigers <tigers@autox.team.net> 
>>> wrote:
>>>
>>> Hi all!
>>> I have had elex fuel pump problems since 1964 & an MGA. In my Tiger I have 
>>> two pumps piped in parallel. There is no shifting valve as both have check 
>>> valves. I only shift them electrically. The stock SU idles at 3.5 psi and 
>>> the aftermarket at 4.2 psi. While I really can not notice any performance 
>>> change I only use the aftermarket for troubles or autocrossing. The issue 
>>> is not the carb but the float valve. My research indicated that most float 
>>> valves are good for 7 psi.
>>>
>>> Harry Elam
>>> B382000471
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