Oops! Wrote this reply this morning, but forget to send! Getting to busy!!
Jim
> Date: Wed, 30 Aug 2006 11:48:26 -0400
> From: <jarplanner@cox.net>
> Subject: Re: Intake manifold (how to do B manifold)
> Cc: spridgets@autox.team.net
>
> Michael
>
> At one time I was going to use a pair of 1 1/2" SUs on my 1380 motor, so I
>modified a MGB intake manifold. (Eventually went with a single HIF6 and
>manifold).
>
> I started with a B intake from E-bay ($20-25?). The intake is aluminium and
>very easy to cut & grind as needed. The B intake is longer than the 1275
>intake so take measurements to remove section from center to get intake
>openings to align with head intake openings. I cut a length of pipe from an
>old plant water nozzle (od was same as intake log id) to re-connect the 2
>halves of the manifold.
>
> The mounting flanges on the B manifold are slightly wider than the studs in
>the 1275 head and will need to be cut to same size. Then the mounting hole cut
>-out needs to be re-aligned to the head studs. I just used a round file for
>this; pretty easy.
>
> Once I knew everything would fit, I mounted to the head and lightly tightened
>in place. I couldn't find anyone local who would weld aluminimum, so I used a
>little JB Weld to permanently connect to manilfold halves. Sanded for
>appearances.
>
> The final step was grinding top of mounting flange to match exhaust flange
>heights. The height obviously varies slightly with type of exhaust (stock,
>headers).
>
> I thought the modified manifold looked pretty good, and fairly stock looking
>( except to experts on the list of course). The whole process was fairly easy
>and much cheaper than purchasing an after-market manifold. I ended up selling
>the manifold and SUs on Ebay; I think to someone on list ( I forget who, I'm a
>OF), so that person might speak to performance.
>
> Hope this helps,
>
> Jim Rogers
> San Juan Capistrano, CA
>
>
>
> ---- Brad Fornal <tequila.brad@gmail.com> wrote:
> > I think I recall someone from the list taking a "B" intake, cutting
> > out the appropriate amount in the center to make it fit the A series.
> > They hooked the two bits together with a hose, IIRC, and used that.
> > I could be wrong, and wait to be corrected.
> >
> > Brad
> >
> > On 8/30/06, Michael Cheman <mcheman1@msn.com> wrote:
> > > Hello - I've been watching the list for some time now and have found it to
> > > be a wealth of information. I've got a '66 Sprite with a 1275 and I want
>to
> > > put 1.5" SUs on it. The engine has a mild cam, ported head, and header.
> > > The current 1.25" carbs seem to run out of flow top end. I've got the
>1.5"
> > > SU carbs, but I'm in need of a manifold. Anyone have one for sale, or
>know
> > > where I can locate one? Thanks in advance.
> > >
> > > Cheers, Mike
> >
> > --
>
> >
> >
> >
> > ===
> >
> > ===
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