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Audi
Specifically Designed and Modified
Cylinder Heads


Most Popular Audi Engine Applications (others available):

A3 • A4 • A5 • A6 • A8 • A1 • QUATTRO • Q5 • Q7• Q8 • R8 • S4 • S5
S6 • TT • TTS • TURBO



More... Audi Cylinder Head work descriptions
*** Cam(s)$20 each and Rockers $80 Extra ***
20 valve heads add 20%, V6 50%
Prices
Head Refresh A complete breakdown, inspection, and cleaning of the Head, the Valves, Springs, Hand Lap Valves, Lube, and re-assemble. $495
Stage I A complete breakdown, inspection, and cleaning of the Head, the Valves, Springs, Competition Multi-Angle valve job, Lube, and re-assemble. $595
Stage II A complete breakdown, inspection, and cleaning of the Head, the Valves, Springs, 30MM Pocket Port, Competition Multi-Angle valve job, Lube, and re-assemble. $950
Stage III A complete breakdown, inspection, and cleaning of the Head, the Valves, Springs, Full Port and Polish, Polish Chambers, Competition Multi-Angle valve job, Lube, and re-assemble. $1,150
Stage IV A complete breakdown, inspection, and cleaning of the Head, the Valves, Springs, Full Port and Polish, Modify and Polish Combustion Chambers, CC Chambers and balance all four volumes plus/minus 0.4cc, Competition Multi-Angle valve job, Lube, and re-assemble. $1,450
"EXTRAS" Full list of additional modifications, polishing, coating(s), Microlon, Chambers, Surfacing, Cam(s) and Cam Cap work, Throttle Body Modifications and Polishing, Rocker work and lightening, Oil pump modifications, Water Pump Modifications, Spring work, "Sniper Valve Guides" and much more...

Select ANY picture to enlarge

Disassembly/Inspection

Detailed Inspection

Cleaning Parts

Remove Burrs

Check Valve Springs

Check Valve Guides

Check Valves

Measure Cam lobes

Measure bolts

Measure Retainers

Grind Valves

Lapping Surface

Microlon Treatment(s)

Clean Valve Trains

Guides Ready to Install

Springs Ready to Install

Dan at work, porting and polishing

 

Dan getting into his work...

Dan Working Hard!

Audi heads in Progress...

Audi Head Work Audi Head Work Audi Head Work

Finished head, ready to Assemble

Audi Head Work Audi Head Work Audi Head Work

DPR Racing's "World Famous Audi Cylinder Heads"!!!

Audi - Head Refresh _______________________________________________________________________
- Pre-inspect cylinder heads; Check for completeness, and insure all parts are intact, and have arrived without damage.

Disassemble head for inspection and cleaning(including stud removal):

- Failure analysis: Each component of the cylinder head; the casting for cracks, studs, bolts, lifters, valves, springs, retainers, keepers, and seal(s) is inspected and gone over in great detail, scrutinized, and then re-examined, to find every point of wear or damage. Inspect and clear every water and oil passage, and the cam oil channels, bearing journals, and cam bearing surface quality. We also look for "casting shift" which is a manufacturing defect effecting alignment of EVERYTHING, dowel pin fit/alignment, rust, corrosion, warping/heat damage, seizing/lack of lubrication, galling/metal to metal transfer, and over all surface finish, to determine if there is damage by weathering, salt water corrosion, or by fluids such as coolant, or battery acid. Valve seats are checked for cracks, and fit.

- Check all surfaces for cracks and straightness/flatness: The valve cover mating surface, and head deck surface are checked to verify straightness, and no warping or heat damage of the head casting.

- Measure and record valve tip to base length: This measurment will determine valve wear from "stretching" due to heavy or multiple valve springs.

- Measure valve stem wear and compare with allowed tolerance.

- Remove carbon, Clean Heads, and valve train components

- Calculate valve guide to stem tolerance and wear: This set of measurments is used to determine valve stem wear, and also valve guide wear. If these measurments are out of spec , it could indicate valve and/or valve guide replacement is required.

- Inspect deck surface finish for corrosion scratches, impact
  damage or warping/cracking or head gasket failure(s).

- Inspect studs, and threaded holes for rust, wear, clearance and dirt. "Chase" dirt from every threaded hole with thread chaser and compresssed air, inspect and clean each spark plug hole, and spark plug seating/mating surface.

- Inspect and test valve springs - Inspect keepers and retainers, measure retainer thickness, and check inspect keeper grooves.

- Inspect heads and valve train for any signs of valve float, or chamber damage from foriegn objects.
Lap, port faces and gasket areas
Hand lap valves
Vacuum test
Clean for assembly
Final Assembly, including new valve seals.

[View Extras/Add On's...]

  *** Cam(s)$20 each and Rockers $80 Extra ***

$495 (Labor only) 4 Cyl
  $742 (Labor only) 6 Cyl
   

 

Contact us at customerservice@dprracing.com to request cylinder head work.


  [back to top]









Audi - Stage I
Competition Multi-Angle Valve Job
_______________________________________________________________________
Pre-inspect cylinder head.
Disassemble for inspection and cleaning including:
Re-inspect cylinder head.
Disassemble for inspection and cleaning including:

- Failure analysis
- Check all surfaces for straightness
- Measure and record valve tip to base length
- Estimate including valve stem wear
- Remove carbon, clean heads, and valve train components
- Calculate valve guide to stem tolerance and wear
- Inspect deck surface finish for corrosion scratches, impact
  damage or warping/cracking
- Inspect studs. threaded holes for wear and clearance
- Inspect and test valve springs
- Inspect keepers and retainers
- Inspect heads and valve train for any signs of valve float
Light debur
Lap, port faces and upper cap and gasket area
Competition high flow multi angle valve job with preparatory angles
Hand lap valves
Vacuum test
Set up proper seat pressure and clearances
Final clean for assembly
Preassembly inspection
Final Assembly

[View Extras/Add On's...]

  *** Cam(s)$20 each and Rockers $80 Extra ***

$595 (Labor only) 4 Cyl
  $892 (Labor only) 6 Cyl
   

 

Contact us at customerservice@dprracing.com to request cylinder head work.

  [back to top]















Audi - Stage II -
Multi-Angle Valve Job/Pocket Port Job
_______________________________________________________________________
Pre-inspect cylinder head.
Disassemble for inspection and cleaning including:
Re-inspect cylinder head.
Disassemble for inspection and cleaning including:

- Failure analysis
- Check all surfaces for straightness
- Measure and record valve tip to base length
- Estimate including valve stem wear
- Remove carbon, clean heads, and valve train components
- Calculate valve guide to stem tolerance and wear
- Inspect deck surface finish for corrosion scratches, impact
  damage or warping/cracking
- Inspect studs. threaded holes for wear and clearance
- Inspect and test valve springs
- Inspect keepers and retainers
- Inspect heads and valve train for any signs of valve float
Debur
Lap, port faces and upper cap and gasket area
Port and polish intake and exhaust
Gasket match, port 30mm into ports and pocket port under seats
Light combustion chamber polish
Competition high flow multi angle valve job with preparatory angles
Hand lap valves
Vacuum test
Set up proper seat pressure and clearances
Final clean for assembly
Preassembly inspection
Final Assembly

[View Extras/Add On's...]

  *** Cam(s)$20 each and Rockers $80 Extra ***

$950 (Labor only) 4 Cyl
  $1,425 (Labor only) 6 Cyl
   

 

Contact us at customerservice@dprracing.com to request cylinder head work.

  [back to top]




Audi - Stage III -
Competition Multi-Angle Valve Job, FULL Port & Polish Job
_______________________________________________________________________

Pre-inspect cylinder head.
Disassemble for inspection and cleaning including:
Re-inspect cylinder head.
Disassemble for inspection and cleaning including:

- Failure analysis
- Check all surfaces for straightness
- Measure and record valve tip to base length
- Estimate including valve stem wear
- Remove carbon, clean heads, and valve train components
- Calculate valve guide to stem tolerance and wear
- Inspect deck surface finish for corrosion scratches, impact
  damage or warping/cracking
- Inspect studs. threaded holes for wear and clearance
- Inspect and test valve springs
- Inspect keepers and retainers
- Inspect heads and valve train for any signs of valve float
Debur
Lap, port faces and upper cap and gasket area
Port and polish entire intake and exhaust
Gasket match, and fully port intake and exhaust
Lightly de-shroud combustion chamber polish
CC Chamber and match all four volumes
Competition multi angle valve job with preparatory angles
Back cut intake valves
Hand lap valves
Vacuum test
Set up proper seat pressure and clearances
Final clean for assembly
Preassembly inspection
Final Assembly

[View Extras/Add On's...]

  *** Cam(s)$20 each and Rockers $80 Extra ***

$1,150 (Labor only) 4 Cyl
  $1,725 (Labor only) 6 Cyl
   

 

Contact us at customerservice@dprracing.com to request cylinder head work.

  [back to top]





Audi - Stage IV -
Competition Multi-Angle Valve Job, FULL Port & Polish Job and Combustion Chamber Mods
_______________________________________________________________________
Pre-inspect cylinder head.
Disassemble for inspection and cleaning including:
Re-inspect cylinder head.
Disassemble for inspection and cleaning including:

- Failure analysis
- Check all surfaces for straightness
- Measure and record valve tip to base length
- Estimate including valve stem wear
- Remove carbon, clean heads, and valve train components
- Calculate valve guide to stem tolerance and wear
- Inspect deck surface finish for corrosion scratches, impact
  damage or warping/cracking
- Inspect studs. threaded holes for wear and clearance
- Inspect and test valve springs
- Inspect keepers and retainers
- Inspect heads and valve train for any signs of valve float
Debur
Lap, port faces and upper cap and gasket area
De-flashed inside out
Modify oil returns
Competition port and polish intake and exhaust
Gasket match or any intake/exhaust design fully port
Radius exhaust seats
De-shroud combustion chamber polish
CC Chamber and match all four volumes
Competition high flow multi angle valve job with preparatory angles
Back cut intake valves
Hand lap valves
Vacuum test
Set up proper seat pressure and clearances
Blue print with documentation
Final clean for assembly
Preassembly inspection
Final Assembly

[View Extras/Add On's...]

  *** Cam(s)$20 each and Rockers $80 Extra ***

$1,450 (Labor only) 4 Cyl
  $2,175 (Labor only) 6 Cyl
   

 

Contact us at customerservice@dprracing.com to request cylinder head work.

  [back to top]




Audi Cylinder head "Extras":

DPR CUSTOM "Audi" upgrades

- DPR Valves Oversize/Nitrite(+0.5, +2.0) (IN/EX) $160
- DPR PCS Valve Spring Kit(Springs and Titanium Retainers) $380
- DPR Dual Springs $320
- DPR Titanium retainers (For single and dual springs, NOT PCS
  springs) $220
- DPR Racing Valve Guides $164

Microlon

- Microlon CL100 - Add to Engine,Trans,PS for newer 4-8 cyl
  $183.96+shipping   (Read about "Microlon" Products)
- Microlon Parts Treatment - Valves,Rockers,Cam(s),Springs
  & Retainers $60 (Read more...)

Throttle body/Injectors

- Blueprint Throttle Body $150
- Fuel Injectors - Complete Service $24 each
  (before,after,pattern flow printout) (Visit "RC Injectors" site)
- Bore out throttle body and install larger plate by RC Injectors $150
  (Visit "RC Injectors" site)

Coatings

- Ceramic coat valve faces $10/Per valve
- Ceramic coat exhaust valve radius $12/Per valve
- Ceramic coat exhaust ports With Chmbrs/$15 Each
- Thermal dispersion coat head Call for pricing!
- Ceramic coat combustion chambers 4 Cyl $180
- Ceramic coat inside/outside intake manifoldCall for pricing!
- "Oil Shed" coat under piston Call for pricing!
- Ceramic/Resin Impregnated Head/Intake Manifold Coating - Choose:
  (Black-gloss/semi, Lt/Dk Gray, Red, Blue, Yellow, Green, Purple)
  $100

Chamber Work

- Combustion chambers matched to the bore. Deshroud valve area.
  Shape and polish. Call for pricing!
- Measure and record one combustion chamber volume $18
- Or balance all four volumes plus/minus 0.4cc $60
- Balance plus/minus 0.15cc $80
- Measure and match volumes with valves installed after seat cut
  $300
- Custom combustion chamber modifications such as high swirl
  chambers, lower combustion chambers, stop chambers.
  Call for pricing!
- Modify Combustion chamber "Quench Area" to direct and shape
  the explosion of combustion. $30/Cyl

Rockers

- Blueprint rocker arms $10 each (Read more...)
- Remove rocker arms $12 (Read more about "Rocker Arms" Mods)
- Rebuild rocker arms includes polishing shafts, adjuster tips and
  surface $155 (Read more about "Rocker Arms" Mods)
- Lighten rocker arms $155 (Read more about "Rocker Arms" Mods)

Intake/Exhaust Manifold

- Enlarge manifold for oversized throttle body. $100 and UP!
  (May be included in manifold porting)
- Port match intake manifold $60.00 - $100.00
- Diamond intake port finish $60
- Exhaust manifold port match $60 - $100

Head/Deck Surface

- Lap deck surface $20
- Mill deck surface $60

Cam(s), Cap(s) Work

- Polish Cam bearing Surface(s) $20
- Blueprint Cam(s) $40/cam
- Lash Cam(s) $250
- Custom fit cam caps to head and camshafts WPC treatment
  Read More...
- Polish camshaft journals $40/cam
- Align bore cam journals and caps $40/cam
- Machine oil groves in camshaft journals $40/cam
- Machine oil retention grove in cam cap $35/cam
- Polish one set (16) cam cap dowel pins and dowel receiving bore.
  Remove oxidation, rust and corrosion for proper fit, prevents
  seizing and improperly located caps. $50

Valve Guides

- Valve guide replacement includes removal of valve guide, bore
  prep. Hone guide to fit valve stems. $144 labor 4 Cyl

Valve Springs

- Blueprint Springs $60
- If utilizing heavy valve springs, hi rpm, fast cam ramp, we suggest
  WPC treatment to cam caps and/or oil channel
  modification. Call for pricing!   Read more...

Flow Bench

- Flow testing $100.00 per hour
  (View "Flow Bench" Explanation)

Oil Pump

- Blueprint new OEM Oil pump, better Flow, better Lubrication
  $45 labor

Water Pump

- Blueprint new OEM Water pump, better Flow, better Cooling $45 labor


Audi Custom cylinder heads can be supplied outright. Contact us for availability and details. Stage V,VI and VII custom modifications available for COMPETITION USE ONLY!!!

 

Contact us at customerservice@dprracing.com to request cylinder head work.

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