[Spridgets] HIF4's on my Datsun 210 motor with GX head

[Rick Bastedo]

If you look at my pictures, notice there is a fuel feed hose that loops
around from the front to the back carb?
I'm looking and looking and looking and not seeing it until just now, the
things have a hose that goes between the two carbs at the front, supposedly
to feed fuel from the front to the back carb.

So why does this fuel line from the pump go to both carbs I was wondering?
I look and look at the diagram in the book and it just hits me - there's a
fuel feed hose to the front carb but the back only has "breather pipe" and
"vent hose" connections on the right side - no fuel feed in over there as
the fuel feed in is on the left side of that carb!!

So - what happens when you feed fuel into the carb via the 'vent tube' or
the 'breather pipe'?
Whatever it is, I will bet it isn't good!!!

I'm off to make my stuff look more like the book - wish me luck!!

Rick (too much gas in the wrong places) Bastedo


On Sun, Jun 27, 2010 at 11:42 AM, Steven Guterman <an5.sprite at gmail.com>wrote:

> I had an overflow problem with my SU 2s until I adjusted the fuel regulator
> to 3 psi.  Not sure what pressure the HIF want but I would first test to see
> what pressure you are getting into the carbs, assuming the floats and seats
> all look good.
>
> Steve
>
> On Sun, Jun 27, 2010 at 2:25 PM, Rick Bastedo <rbastedo at gmail.com> wrote:
>
>> I had this hi performance head and sual SU manifold and Mike from our
>> local
>> Spridget group had a pair of HIF4's and BillM had a gasket set so....
>> We got together yesterday and I started pulling the old econo head off my
>> A15 Datsun motor.
>> After much cleaning, a bit of 'adjusting' ala angle grinder, 8 inch bench
>> grinder and other assorted tools of torment we got the new cylinder head
>> and
>> manifolds and carbs mounted to the motor and torqued down.
>>
>> Then came the fun part - getting it to run.
>>
>> At first it was a major smoker - seriously huge clouds of billowing smoke
>> enveloping the neighborhood.
>> We fiddled with it a while then I remembered the old setup neede a fuel
>> pump
>> that had 4 to 6 psi.
>> I mentioned this and Bill produced a couple other pumps.
>> We tried one, and at first it seemed to run good, then went downhill.
>> We swapped in another pump and got it running "good enough" to drive home
>> (we thought).
>>
>> I made it a few hundred yards then had to pull over - no good.
>> Bill said to try richening the carbs, I did that and could get it to limp
>> along.
>> It was late and we had all had a long day - a good day, but long.
>>
>> I made the car limp home. It started running at high rpm, running very
>> rough
>> at 4k rpm.
>> I just tried to keep it in 4th and cruise as much as possible.
>>
>> I went out this morning and turned the key - gas started coming out the
>> front carb overflow.
>>
>> I need some HIF4 guru help here, anyone know these carbs well and want to
>> offer any advice?
>> You can see a couple pics of the setup here:
>>
>>
>> http://www.britishcarforum.com/bcforum/ubbthreads.php/topics/688274/Well_my_Midget_made_it_home_Ne#Post688274
>>
>>
>> http://www.britishcarforum.com/bcforum/ubbthreads.php/ubb/download/Number/21857/filename/Imgp8816.jpg
>>
>>
>> http://www.britishcarforum.com/bcforum/ubbthreads.php/ubb/download/Number/21858/filename/Imgp8814.jpg
>>
>> Rick (they do look nice though) Bastedo
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