BMW Airhead Cylinder Head Page

Job Pricing:

We will email an estimate for your approval after we inspect your heads and before we do any work. If you don't have email we will call you. We will ask for your method of payment at the time that you approve the work estimate. This is necessary because so often after the job is finished we spend valuable time trying to reach the customer for payment. We will not charge your card until we are ready to ship. If we find any unexpected problems while the work is being performed we will contact you with the additional costs for your approval before we proceed. Here are some approximate pricing numbers for budgeting purposes:

• Overhaul heads/unleaded conversion (*see details, below): approx. $750.00/pair. Sales tax on parts applies only if in CA.
  
• Exhaust thread repair: $125.00 each.
  
• Spark plug thread repair: depends on condition, varies from $50.00 to $150.00
  
• Dual plug machining 12mm or 14mm $125.00/pair
  
• Plane warped heads: $75.00/pair
  
• Modify small combustion chamber for 1000cc cylinders: $75.00/pair
  
• Remove step on cylinder base to fit 81-on Nikasil cylinder onto '76-'80 engine block: $60.00/pair
  
  *750.00/pair for cylinder head overhaul is an average/round number for your budgeting purposes and includes all parts and labor. Most if not all states have consumer protection laws that require a service shop to provide you with an estimate for your approval before any work is done. Not all shops follow these laws but they do exist. We do everything by the book and provide you with an estimate of what we believe is the expected work needed after a cursory inspection of your heads. Once you approve the estimate we go to work.  
  
  

  After your heads are disassembled and de-carboned, and the combustion chambers are examined, the valves are measured for stem wear, the intake valves are refaced and the margins are measured, the valve guides are removed and the guide bores are inspected and measured, the exhaust seats are removed and the seat pockets are inspected and measured, things can change.
  

  Sometimes the intake valves have no stem wear and after refacing have .040” or more margin, then we can re-use them and remove the new intake valves from your work order which lowers the price. However sometimes a previous overhaul has made a mess of your intake seats as one example, so then we would contact you with an updated price quote for your approval before we replace your intake seats. Note: Exhaust valves will have pits and dishing in the sealing face as normal wear. We never reface exhaust valves because they need to be as thick as possible for long term durability. Exhaust valves are always replaced.

  What we always hope for is that your heads were not damaged by previous head work. If they are virgin heads the work is pretty routine. If a previous shop did sub-par work and we have to correct that damage, obviously that changes things, and we cannot always see this until we get deeper into the job.

Turnaround time:

You can always see your job progress in our service queue. Generally speaking the jobs are done by date in which is in descending order on the service queue list. You can also see estimated turnaround time on the list. By only focusing on cylinder head work, we can get your heads back to you quickly.

If you need any additional information, please contact us at: service@beemershop.com