All MWR 2ZR-FE built cylinder heads include:
– Competition 3-angle valve job
– New performance valve seals
– Full inspection
1. Core Charge
Like most engine builders we sell these engines, heads and blocks on an exchange basis. That means that we require you to send us a rebuildable “core” similar to the engine, head or block that we are sending to you. If we’re going to send the rebuilt unit to you first then we charge you a core charge, which is a deposit that we hold on to until your core is returned to us and is then refunded to you. For a full refund of your core charge the core must be returned within 30 days and must be rebuildable- this means no holes or cracks in the block, no significant damage to cylinder heads, and no missing bits such as cam caps. We don’t care about pistons or rods. Valves may be bent, crankshafts may be scuffed.
2. Port work
Select the ported head option to have MWR fully port your cylinder head. That includes using our extensive experience on the flow bench to smooth and reshape the ports and seats for the ultimate in flow. You can expect improved power throughout the rev range whether you’re turbo or NA with no loss of street manners.
3. Valve springs
Select stock valve springs if you will be keeping the stock rev limiter and cams. Select MWR valve springs to safely rev 500-600rpm higher than the stock rev limiter or if the engine will have aftermarket cams.