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MG Midget and Sprite Technical - Cylinder head

My 1972 1275 midget recentley lost nearly all power on a "spirited" run....After limping home, & checking things over I found that I had lost lots of coolant, A compression test showed 2 cylinders with low compression, so "off with its head" & found a damaged head gasket & 2 badly burnt exhaust valves.

My existing head is a 9 stud head...I can buy an overhauled 11 stud head at a good price, so the question can I fit a 11 stud head onto my 9 stud block ?

Alan cotterill

Alan, why would you want to do that?
I recently did a headgasket (again) and this time replace the studs with ARPs. I could tell the difference when installing- easier to torque due to much smoother movement. this might be an easier solution if you're afraid of blowing another one.
don g

Yes, you can. You can either drill and tap the block for the extra two studs, or just fit on the existing nine.
Dave O'Neill 2

If you do go the 11 stud, the front stud is only torqued about 25-30 ft pounds...I did see the other day on a site to go 60 ft pounds but Id think thats pushing it....the front stud runs into a water jacket and needs sealant,,,,also you may have to notch out the valve cover for studs 10 and 11 as some intrfer...mine did


Thanks for the replies, Alan.
Alan cotterill

This thread was discussed between 21/08/2010 and 22/08/2010

MG Midget and Sprite Technical index

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