If you want to build a Haynes Roadster then go for it and I wish you all the very best with the project.
When I built mine I believe it was the 8th to be completed and the first to be put through the IVA, that was over 10 years ago. It was sierra based, well they were easier to get then and I still have the parts to build another, together with a completed chassis.
Mine was done with the Sierra CVH engine, not very powerful as I think a rolling road only saw 105 HP, but it achieves around 4,500 miles per year and has caused me very little issues. Last week it got me from home down to the South coast and back again covering 1200 miles with no issues which is as it should be.
The main thing to watch out for with the MX build is the rear differential snapping on the mounts. Phil at Talon once did a steel body for the MX diff to take it back like a sierra diff and I think if still doing them it would be an option to look at. On the MX5 and Eunos/Maita? cars the diff is secured to the engine/gearbox with a specialised tube or power plant frame PPF. It keeps everything lined up and stops a lot of rotational force on the diff . In a Seven style car when others have mounted the diff on the wing's and the two front mounts which are only on one side of the diff they end up snapping a wing off!
This is not to put you off but to ask you to do research before hand, The Mazda engine is a good little power plant.
Good luck with the build.
Adrian
When I built mine I believe it was the 8th to be completed and the first to be put through the IVA, that was over 10 years ago. It was sierra based, well they were easier to get then and I still have the parts to build another, together with a completed chassis.
Mine was done with the Sierra CVH engine, not very powerful as I think a rolling road only saw 105 HP, but it achieves around 4,500 miles per year and has caused me very little issues. Last week it got me from home down to the South coast and back again covering 1200 miles with no issues which is as it should be.
The main thing to watch out for with the MX build is the rear differential snapping on the mounts. Phil at Talon once did a steel body for the MX diff to take it back like a sierra diff and I think if still doing them it would be an option to look at. On the MX5 and Eunos/Maita? cars the diff is secured to the engine/gearbox with a specialised tube or power plant frame PPF. It keeps everything lined up and stops a lot of rotational force on the diff . In a Seven style car when others have mounted the diff on the wing's and the two front mounts which are only on one side of the diff they end up snapping a wing off!
This is not to put you off but to ask you to do research before hand, The Mazda engine is a good little power plant.
Good luck with the build.
Adrian