sprint car engine
heater hot shot engine heater hotshotengineheater sbc drag racing race engine
Engine Connection and Technical Info
Hooking up the Hot Shot to your engine is
very easy. Below are some options and
guidelines. The first method (Direct) is the easiest, least-expensive,
and the Hot Shot comes with everything you need. We are listing
the others as an option for those customers who want to go that route.
Direct (Method 1):
Screw the two
supplied ¼” NPT male quick-disconnects directly into the drain plugs on each
side of your engine block and you’re done.
See Figure 1 below. If
your block does not have drain plugs, simply drill & tap the aluminum
freeze plugs (they are easily removed and replaced).
Note: Depending on
the size of the kickout on your oil pan and the location of the block drain
plugs, you may have to remove the oil pan to insert the fitting on the right
side of the engine block.
Remote (Method 2):
Lines are run from
the block to a bracket with our quick-disconnects. The advantage of this method is both
couplings are located in the same spot for easier access. See Figure 2 below. We sell the bracket and all necessary
plumbing as optional accessories on our Order Page. For
more pictures and details on this connection method, view our Remote
Hookup Instruction Sheet.
Lower Radiator Hose (Method 3):
Use a lower radiator
hose check valve, which is readily available from most any speed shop, with
our supplied quick-disconnects. We do not
sell a lower radiator check valve at this time.
If you already have
a lower radiator valve with fittings, contact us before ordering and we can
put the matching hose-ends on your heater for you!
There are many ways
you can plumb your engine for a heater.
Above we have listed the most common methods, but as long as you are
creating a loop in the cooling system (which includes the heater), you can
plumb it any way you want. The key is
to have the 2 hookups for the heater at opposing ends of the cooling system
to create as complete a loop as possible.
A nice method for
SBC steel block engines is to use billet aluminum freeze plugs that press
right in and replace the traditional tin/brass plugs. Speedway Motors sells a set already tapped
½” NPT and Joe’s Racing has them with an integral AN8 fitting.
We have had
customers put a “T” fitting on the lines into/out of the block or head with
connection point is to use the two water ports on the front of the
block. These are typically blocked off
with aluminum plates. We’ve had
customers drill & tap these plates ¼” NPT and then run lines to our
Shoot us an email or
give us a call and we can help you figure out the best way to plumb your
Figure 1 – Direct Figure 2 - Remote
of the connection method, the entire
engine and cooling system is heated completely and uniformly. This includes the water, heads, radiator,
and block, etc.
Cooling System Pressure
The Hot Shot does not create any additional
cooling system pressure via the pump, it is only through the heating of the
water that pressure is created (the same as what happens when running your
engine). A cold engine with the Hot
Shot running will have 0 psi cooling system pressure, at 180* there will be
approximately 10-14 psi. In the video
above, the gauge indicates 11 psi of pressure at the top of the radiator at
General Product Instructions Click here
Sprint Car Remote Hookup Instructions Click here
Weight of Components
installed on Engine:
Fittings: Steel 5 oz
OR Aluminum 2 oz
(included): 1 oz
(optional): 6 oz
Remote Plumbing kit
(optional): 9 oz