Product Description
The Sneed Super Cooper series of cylinder heads is our premier fully assembled MINI Cooper cylinder head. Each head is cleaned, checked and then built into a Super Cooper Street, Sport or Super head by our inhouse engine machinist.
Super Cooper Street - N14 and N18 (Stock replacement) heads are fully rebuilt to better than OEM specs with OEM parts. They are milled and trued to .0001 of an inch on the engine sealing surface and then receive a high flow valve job and valve facing as well as setting the valve spring seat pressures for best performance. All lifters, valve guides, valves and rockers are repaired and/or replaced as needed. This is a great stock replacement head, built by the leading MINI race parts manufacturer, with a few race touches.
Super Cooper Sport, N14 heads receive all the above plus a high performance cams and new high performance valve springs. If you're tracking your MINI on a budget, this is the head for you. Direct, bolt on replacment for the stock head with a 15-20 horse power increase over the stock unit with ECU tuning, REV limiter can be increased to 8000rpm. But no ECU tuning required to use the head.
Super Cooper Race, N14 heads receive everything above, along with cleaned valve bowls, swirl porting and polishing, a high performance cams, and race valve springs. All this creates a head that makes big power, handles high boost levels and revs past 10,000 RPM without valve float. ECU tuning is required.
Super Cooper Race N18 heads are fully rebuilt to better than OEM specs with OEM parts. They are milled and trued to .0001 of an inch on the engine sealing surface and then receive a high flow valve job and valve facing as well as setting the valve spring seat pressures for best performance. All lifters, valve guides, valves and rockers are repaired and/or replaced as needed. Also included, ported and polished valve bowls and intake and exhaust runners and ports. These modifications create a head that makes big power and can handle high boost levels. ECU tuning is recommended.
No core charge on cylinder heads.
Normally heads are in stock and ready to ship. Emissions legality for sport and race heads is not guaranteed, emission laws vary by state. If you are concerned check with your states DOT/DMV or governing body for emission laws and legality questions.
