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Mse4 Minispares Cylinder Head

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#1 sam138


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Posted 09 September 2019 - 09:30 PM


I’m due to collect my new MSE 4 cylinder head from minispares tomorrow with a set of 1.5 high lift rockers.
Any idea on torque/ bhp increase on below spec please ?

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1275cc Cooper (A+) standard rebuilt
Standard cam
Rebuilt hiff44 carb
Maniflow lcb / rc40 exhaust
Minispares inlet manifold
Med St1 ultralight clutch kit

Currently 73bhp 80ftlb

#2 nicklouse


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Posted 09 September 2019 - 09:36 PM

what CR did it have and what was the head CC?

#3 Cooperman


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Posted 10 September 2019 - 09:27 AM

So long as you set the compression ratio to around 10:1 or slightly higher and run on 98 ron petrol, you will get a reasonable gain. 

However, the gains will be limited by virtue of the fact that you are retaining the standard and very mild camshaft. That spec of head and induction/exhaust system really needs at least an MG Metro/Kent 266 or similar to release the potential of the head and induction/ex. systems.

The offset rockers will help a bit and if asked to guess I would think around 80 to 83-ish bhp with some increase in mid-range torque.

#4 sam138


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Posted 10 September 2019 - 07:14 PM

Thanks for the reply’s. Working it out the old head had 23cc and about 9.6 and the new head has 21.4cc with about 10.1 compression

Edited by sam138, 10 September 2019 - 07:14 PM.

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