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@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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