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Head rebuild and repair
Prices listed below do not including return shipping!
| We offer head rebuild and repairs
no matter whose heads you have. Our prices are not
only very competitive with what you might get at your local
machine shop, you can feel confident that you are also
getting the best performance possible out of your heads.
Many local machine shops are not performance oriented, and
even fewer have the specialized knowledge and tools to make
each of the particular castings perform their best. As
shown in the photos below we can repair most any type of
damage which is important if you have a high dollar set of
ported heads that need serious work.
We have worked with most all stock and ported modular heads available and can offer the following:
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| Basic
rebuild - includes performance valve job, regrind
of your valves, CBN surfacing (milling) , full cleaning, new valve
seals, and assembly (assembly does not include cams, lifters
or rockers). This can be done to stock or ported
heads. Minor TIG welding work is included if there is
minor damage to the head.
Price is per pair: 2V - $300 3V - $350 4V - $400
There is a $100 discount from the above pricing if we are rebuilding our own ported heads. New straight bronze guides are $10 each installed if any guides need to be replaced. Timeserts for bad spark plug threads are $25 each We can install new valves, springs, retainers, etc., as well. |
| Upgrade
rebuild - includes all new straight bronze
guides, performance valve job, regrind of your valves, CBN
surfacing (milling), full cleaning, new valve seals, and assembly
(assembly does not include cams, lifters or rockers).
This can be done to stock or ported heads. Minor TIG
welding work is included if there is minor damage to the
head.
Price is per pair: 2V - $450 3V - $500 4V - $600
Timeserts for bad spark plug threads are $25 each We can install new valves, springs, retainers, etc., as well. |
| Patriot 2V
specific
rebuild - The early versions of these heads
had a problem with the
valve, valve guide, and seal interface. We install
all new 21-4N stainless steel 1.78" intake valves with
different specs, and rework/modify the intake guide to
seal properly to the new valve seals. includes
performance valve job, CBN surfacing (milling), full cleaning, new
valve seals, and assembly (assembly does not include
cams, lifters or rockers). Minor TIG welding work
is included if there is minor damage to the head.
Price is per pair: 2V Stage 2 - $450 2V Stage 3 - $500
Timeserts for bad spark plug threads are $25 each |
A sample of extreme head repair
This is a high dollar set of CNC ported PI heads a customer needed a serious repair on. Total bill for this repair was $125 in addtion to the general repair price posted above. This included the welding, porting/grinding, installation of new exhaust seat, installation of new Timesert spark plug insert, and pressure testing the head.
| Photo of head as received. You can see the entire area between the exhaust seat and spark plug insert has been melted away. |
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| A close up showing the hole that was formed. |
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| Here we have cleaned the chamber and removed the steel spark plug insert. |
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| Next step is to grind to find fresh aluminum for the weld to stick to. |
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| TIG welding a new spark plug protrusion and filling the hole that was formed. |
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| Grinding of new spark plug protrusion and exhaust port to bring it back to the original shape and profile. Also the threads have been cut for the Timesert. |
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| Finished job with new exhaust seat, and a new spark plug insert. The water jacket behind the weld was tested to 45lbs of air pressure to ensure no cracks or leaks. |
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