Please note we can get a full set of 24 of these, however it's going to take much longer (weeks) to get all the same bucket. Toyota doesnt like to ship out large quantities of the same part number of shimless bucket together, so if time is a factor, your best bet is to spread that over at least a few different part numbers
When going all-in on a 2JZ cylinder head for a high rpm motor, weight savings at the bucket is very helpful. Shimless buckets are exactly that buckets that designed in various sizes which eliminate the shim and bucket used on the factory cylinder head. This listing is for a full set for a 2JZ.
The weight savings is almost 50%, so that certainly helps when you get to 8,800 rpm+ motors. If you have not machined and done initial assembly on your head then you can save a lot of hassle and purchase shimless buckets that are all the same dimensions.
In order to do this, which we recommend for every cylinder head, make sure whoever is building your head has a 'set valve height tip length'. If you take care of that, then since the tip lengths are all the same the buckets can all be the same.
You will need to check your clearances and your order will require various buckets. Please let us know the sizes and quantity (you will need 24) in the comments section of the order form.
In the first photo you see a shimless bucket (no shim, all one piece). In the second photo you see a standard 2JZ bucket with a removable shim. When building a standard head the shim sizes are varied and not the entire bucket like in a shimless design.
Since the majority of the weight is in the shim itself, you eliminate that as well as reduced weight in the shimless bucket itself.
Takes us between 3-4 days and a few weeks to ship, so plan your build accordingly.
Let us know in the comments section which sizes and quantities you need of the following:
13751-46030 5.06 mm