Welcome to our resource for MG Car Information.



MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG Midget and Sprite Technical - 40 inlet manifold?


Any recommendations for an inlet manifold for a 40 Dellorto/Weber sidedraft carburettor?

Low budget , so suggestions for secondhand types would be good.

As for new, are the Maniflow ones popular?


M Wood

I might have a short one around but not the best for power and in Holland
Onno K


Do you have any welding and machining equipment to hand or that you can get a hold of. I've made 3 manifolds in the past for 40 Dellorto to suit 1098cc, 1215cc, and 1420cc A series and the early ones had straight runners rather than the nicely curved ones of the Maniflow. The runners were IIRC from 1.5" OD 16swg wall tube and I used a taper mandrel I had turned to increase the size at the carb end to 40mm ID. The rest is fairly simple fabrication. They seemed to work well. Although a 45 would have been better on the 1420cc I stuck with the 40 and made a manifold which allowed the 2 chokes to share somewhat and it made good power at 85bhp at the wheels for a home prepped engine on a budget, that manifold was hammer formed as an upper and lower H shape and welded together. Strangely one of the early manifolds ended up in the US with someone that posted here. BTW I used 40 Dellortos due to their being readily available in scrap yards at the time courtesy of rusty Alfa Romeos and cost me an average of 7.50, still have 3 I think in the garage.
David Billington

I have found that the Maniflow ones are frannkly the best manifolds for sidedraft twin choke carbs (DCOE/DHLA). I would also go for a 45 rather than a 40 (unless you already have a 40 like David) for most Spridget tuning appications. An properly set up HIF44 would be suitable for most applications where a 40 is suitable and would likely be more tractable/use less fuel.


James Bilsland


Here's one for sale on eBay in the UK:

JM Young

This thread was discussed between 30/09/2012 and 07/10/2012

MG Midget and Sprite Technical index

This thread is from the archive. The Live MG Midget and Sprite Technical BBS is active now.