Port Cylinder Head

mini
Classic_Mini_12G940_Cylinder_Head_11_Stud_Modified_Ported_etc_01_yvny

Classic Mini 12G940 Cylinder Head 11 Stud Modified Ported etc

12G940 Modified 11 stud cylinder head. It's a MK3 S/1300 GT casting with the 12G1805 number (has been ground off for unknown reason) and letter'K' stamped next to the thermostat housing. It's been modified but i'm unsure who did the work. The head has been fully ported, all valve throats ground out and smoothed. The valves have replaced with stainless steel REC valves (35 mm inlet, 29 mm exhaust) along with bronze valve guides. I've roughly measured the chambers, and they're about 23cc. The thickness of the head is 70.5 mm. All threads are good and none have been repaired/helicoiled. The bypass hose takeoff has been removed and needs blanking…
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CNC_Ported_Cylinder_Head_for_Mini_JCW_Cooper_S_2nd_Gen_N14_Engine_01_fh

CNC Ported Cylinder Head for Mini / JCW Cooper S (2nd Gen) N14 Engine

CPL Racing CNC ported cylinder head service for BMW Mini / JCW Cooper S (2nd gen) N14 engine (donor cylinder head not included). At CPL Racing we have been porting cylinder heads for 20 years. Our recent acquisition of a new 5 axis CNC machining centre however, has allowed us to expand our services further into CNC ported cylinder heads. Unlike any other company, we do not digitise hand ported heads and reproduce them by CNC machining. Our process is a completely new approach which begins by digitising the stock head. Various ports are then designed using computer aided design (CAD), using formulas we have developed over many years complemented…
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BMW_Mini_Cooper_S_R53_ported_and_polished_cylinder_head_top_performance_01_jgps

BMW Mini Cooper S R53 ported and polished cylinder head top performance

Designed for fast road/trackday use, this ported and polished head gives maximum torque and power while still keeping all the reliability for everyday use. Giving smooth strong power and economy. Using the experience of over 25years in motorsport , the valve guides are removed, and many hours of precision fettling, port matching and shaping is carried out. This head is the most popular TBMotorsport ported head, where the inlet valve seats/throats are increased by 1mm with ports to match , and the exhaust seats/throats are bored out by 1.7mm, again with ports/throats to match. Exhaust ports matched to the (larger) Janspeed exhaust manifold and a large amount of material removed…
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R53 Mini Ported Cylinder Head

Sc porting on Facebook. This is a service to port your cylinder head. We can supply a head for you for a additional charge. Strip, clean and inspect the head. Sc porting fast road throat and ports. Opened out to the std size gaskets. Multi angle cut valve seats to the maximum diameter of valves. Refaced with diamond tip fly cutter, minimum to clean up. We can supply oversized valves. Assembled with new valve stem oil seals. Please contact for more information. We can also supply new performance cam shafts. The item "R53 Mini Ported Cylinder Head" is in sale since Monday, June 29, 2020. This item is in the…
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Mini_race_1275_cylinder_head_good_porting_01_vuor

Mini race 1275 cylinder head good porting

Mini race\fast road 1275 cylinder head nice good porting, stg4, valves 36 x 31, bronze guides, 11 studs, stamped Vmax. The item "Mini race 1275 cylinder head good porting" is in sale since Monday, September 23, 2019. This item is in the category "Vehicle Parts & Accessories\Car Parts\Air Intake & Fuel Delivery\Carburettors & Parts". The seller is "minikatre" and is located in default. This item can be shipped to United Kingdom.
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