MWR Built Cylinder Head – Toyota 1ZZ-FE


Camshafts *

Core Charge *

Port work *

Valve Springs *


Approximate build time: 3-4 weeks from order date

Fits all 1ZZ-FE and 1ZZ-FED engines, all model years.

All MWR 1ZZ-FE built cylinder heads include:

– Competition 3-angle valve job
– Choice of valves, springs, retainers
– New performance valve seals
– Full inspection

Options include

1. Cams
The standard head includes cam caps, valves, springs, seals, retainers and keepers. To save you some hassle and work we can set up the cams for you. To set up the cams you must follow a procedure for measuring the valve clearances then you must buy new valve buckets from Toyota or MWR to set the clearance properly. That can be a 1-2 week process if you have to wait for special order buckets (and they’re always special order). We’d be happy to do the job for you and include the proper buckets and stock cams assembled to your cylinder head. You can even opt to have us set the cylinder head up with aftermarket cams.

2. 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. 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 90 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.

3. 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.

4. 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. Add Titanium retainers for the ultimate in valve float resistance.

5. Valves
Stock valves are fine for general applications. Upgrade to MWR valves for slight flow and power increase and improved durability for high rpm and/or forced induction applications.

Additional information

Weight 55 lbs
Dimensions 24 × 12 × 12 in