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Exhaust Valve 1.15 Late 3 Triple Groove Keeper

Exhaust Valve 1.15 Late 3 Triple Groove Keeper

Exhaust Valve 1.15 Late 3 Triple Groove Keeper
As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize it seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.44" & 3.56") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania! Exhaust valves 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.56" long valves.
Related Technical Articles:
MSE6 - POST 1992 unleaded stage 2 (Road Rocket) large-bore head
Created: October 23, 2000
Modified to give maximum performance gain for cost. Combustion chambers, inlet and exhaust ports extensively re-worked. Stone-ground finish in ports promotes ultimate fuel atomisation. Three-angle valve seats in head. Super-quality MG Metro valves modified to increase airflow.
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