Search found 414 matches

by Not_Anumber
Thu Oct 01, 2026 2:37 pm
Forum: MGB General
Topic: MX5 into MGB GT engine swap
Replies: 39
Views: 136529

Re: MX5 into MGB GT engine swap

Thanks, Im through most of the jobs on the critical path now but its definitely a marathon rather than a sprint. The next tasks planned are;

Revist the welding on the exhaust manifold. This is a heel of a thing and certainly the most non standard, Frankensteinian,thing that will be on the car by a ...
by Not_Anumber
Tue Sep 29, 2026 12:19 pm
Forum: MGB General
Topic: MX5 into MGB GT engine swap
Replies: 39
Views: 136529

Re: MX5 into MGB GT engine swap

Mx5 throttle cable is now connected to the MGB pedal.
This was straightforward other that the need to change the 'pedestal' on the horizontal part of the bulkhead directly above the pedal. Access to this from the engine bay proved fiddly on late cars like mine with dual circuit brakes but given ...
by Not_Anumber
Tue Sep 15, 2026 11:29 am
Forum: MGB General
Topic: MX5 into MGB GT engine swap
Replies: 39
Views: 136529

Re: MX5 into MGB GT engine swap

Lowering the tank slightly has allowed the fuel hose to exit under the boot floor rather than within the boot space. The lid over the cut out area now does not need to be as high which has the benefit of allowing the spare wheel to sit almost flat.

The sides of the square cut out area were edged ...
by Not_Anumber
Fri Sep 11, 2026 9:36 am
Forum: MGB Technical
Topic: Mgb rear axle ratio
Replies: 5
Views: 121

Re: Mgb rear axle ratio

Longer legged gears sound a good idea and presumably will also help with economy. With the ratio you are running does non OD 3rd gear equate to non OD 4th on a standard 3.9 ratio ?

Where did you go about trying to source a 3:31 diff and will it fit into a standard late axle casing using the same ...
by Not_Anumber
Tue Sep 08, 2026 10:42 am
Forum: MGB Technical
Topic: Mgb rear axle ratio
Replies: 5
Views: 121

Re: Mgb rear axle ratio

That should be very good for motorway driving in particular. How does it feel driving around town. Do you generally need to be a gear lower in urban traffic ?
by Not_Anumber
Thu Sep 03, 2026 12:00 pm
Forum: MGB General
Topic: MX5 into MGB GT engine swap
Replies: 39
Views: 136529

Re: MX5 into MGB GT engine swap

I needed to cut an access hatch in the boot floor above the new pump but wanted to limit the height this needs to be in order to avoid compromising space for the spare wheel. The work around was to discretely lower the fuel tank by approx 3/4".
Others have lowered tanks for a variety of reasons ...
by Not_Anumber
Wed Sep 02, 2026 4:41 pm
Forum: Parts For Sale/Wanted
Topic: Complete VVC K series MGB conversion kit
Replies: 1
Views: 546

Re: Complete VVC K series MGB conversion kit

It would be great if the OP could come back to clarify what it sold for.
by Not_Anumber
Wed Aug 26, 2026 12:34 pm
Forum: MGB General
Topic: MX5 into MGB GT engine swap
Replies: 39
Views: 136529

Re: MX5 into MGB GT engine swap

A thin reinforcing ring was made up from a bit of ordinary mild steel to reinforce the edge of the hole around the pump and was welded around it's circumference to the tank to help provide a more rigid surface for the seal of the pump to fit down to.

Focus then moved onto the pump retaining ring ...
by Not_Anumber
Wed Aug 26, 2026 12:26 pm
Forum: MGB General
Topic: MX5 into MGB GT engine swap
Replies: 39
Views: 136529

Re: MX5 into MGB GT engine swap

Carburettors have the benefit of a float chamber so can cope if there is a momentary interruption of fuel supply from the tank. I will be using the Mazda donor car's fuel injection setup though which needs a constant flow of fuel as well as quite specific pressure requirements so I needed to look ...
by Not_Anumber
Mon Aug 24, 2026 4:21 pm
Forum: MGB General
Topic: SU fuel pumps ?
Replies: 3
Views: 126

Re: SU fuel pumps ?

Thanks. I cleaned it up and put it on Ebay where it has already began to gain several views and a watcher.

I had thought for a while of retaining the SU pump to feed a small swirl pot tank that in turn would feed a high pressure pump but then heard from others that setup could be relatively noisy ...