Hello
These spacers sound exactly like those between the float bowls and the lids
on the 2 inch SU's on my factory prepared Twin Cam. They raise the float
bowl lid a full 1/2 inch. The spacers are made from 2 1/4 inch OD X 1/4
inch wall X 5/8 inch long steel tube. A 1/8 inch long stepped groove on the
OD at the bottom end allows the spacer to sit down inside the top of the
float bowl. The top end of the spacer is machined just like the top of the
float bowl to a depth of 3/8 inch to accept the float bowl lid. The rework
requires longer studs inside the float bowls as standard float bowl lid
bolts (say that 5 times quickly) are not long enough to reach if standard
studs were used. I know all of the 1960 Sebring Twin Cam cars were built
this way but I don't know how well they work or if there are any problems
in use. Clearly with the float sitting 1/2 inch higher the top of the jets
are more fully flooded.
Robin
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> From: Susan and John Roper <vscjohn@iamerica.net>
> To: Dodd, Kelvin <doddk@mossmotors.com>
> Cc: mgs@autox.team.net; vscjohn@america.net
> Subject: Re: mga: MGA Twin Cam.
> Date: Monday, November 09, 1998 9:55 PM
>
> Kelvin, not exactly what I had heard about. Can you tell me how deep
the
> specer was? Thanks, John
>
> Dodd, Kelvin wrote:
>
> > John and Bill:
> >
> > When my friend was researching EX186 the Le Mans Twin Cam we
> > talked with Henry Stone the factory race mechanic about this problem.
> > He showed us drawings of a spacer that fit under the top of the SU
float
> > bowl. The spacer effectively deepened the bowl and reduced the
problems
> > of fuel starvation.
> > Sounds like the modification your guys were doing.
> >
> > Kelvin.
> >
> > -----Original Message-----
> > From: Susan and John Roper [mailto:vscjohn@iamerica.net]
> > Sent: Saturday, November 07, 1998 7:19 PM
> > To: WSpohn4@aol.com
> > Cc: mga@ffwd.bc.ca; mgs@autox.team.net
> > Subject: Re: mga: MGA Twin Cam.
> >
> > Interesting point, Bill. I reached the same conclusion about ten years
> > ago when
> > researching my twin cam. Also was able to confirm by talking to some
> > guys who
> > raced'em when new. I found one who reported having solved the problem
> > by using a
> > float bowl arrngement different from stock. Said the car was so rare
he
> > was never
> > caught by the tech guys. And as a result we have a bunch of neutered
> > twinkies
> > with 8 to 1 compression. John
>
>
>
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