47
YAMAHA
4 STROKE
INATKE
SYSTEMS
ENGINE/
GASKETS
EXHAUST DRIVE LINE
HANDLING
ELECTRICAL WATERLINE
/BILGE
STEERING
& CONTROLS
BODY
ACCESSORIES
SERVICE TOOLS
/HARDWARE
CHEMICAL
©2015 Hot Products. All rights reserved.
YAMAHA FX-SHO/SVHO/FZ • INTERCOOLER • COOLING
ENGINE BLOCK
THERMOSTAT KIT
COOLING OPTION
The R&D Block Thermostat Kit
Option was developed to offer
a way to run “Dual Thermostats”
to the engines cooling system
to control and allow warm up
and pre heat cycles to take
place. Engine Block and Head cooling on the Yamaha Engine becomes
difficult when running high compression ratios, higher boost levels, and
aggressively advanced ignition timing. R&D has found that multiple cooling
lines need to be added to the cooling system to provide enough volume
to keep temperatures stable and in check. The problem is the Single OEM
thermostat is too restrictive and doesn’t allow enough water volume flow
to reduce temperatures with the added cooling lines. R&D has found a way
to add an additional thermostat that allows enough water flow volume to
cool the engine and head and retain the OEM method for engine pre heat
or warm up. The R&D Kit installs as a bolt on kit directly in place of the
corrosion anode. Running two thermostats allows enough water flow to
cool the engine properly. The R&D thermostat kit option will start to open
at 120 degrees, and will allow full flow at 140 degrees. The OEM stock
thermostat opens at 118-126 degrees and allows full flow at 140 degrees.
Having two thermostats installed that are full open at 140 degrees, and
flow enough water volume, will help to keep engine block temperatures to
between an ideal 150-175 degrees. R&D has done extensive testing with
the engineers at MoTeC both on the Dyno and on the water to determine
that 150-160 degrees block temperatures is where the most peak power is,
any hotter and power diminishes. The R&D dual thermostat kit will be a
must have addition where engines are being run in extreme cold water
and weather conditions.
Description
Part No.
R&D SHO/FZR/FZS/VXR/VXS
660-18004
The Hot Products Racing Series
Hot Products Triple Crown of Offshore
May 17th - Hot Products Dana Point to Avalon
July 19th - Hot Products LB2CAT (Long Beach to Catalina) Championship
September 20th - Hot Products Dana Point to Oceanside
2014 LB2CAT C
HAMPION
C
RAIG
W
ARNER
, K
AWASAKI
.
P
HOTO
C
OURTESY OF PWCOFFSHORE
.
COM
IJSBA is proud to present one of the most exciting new developments in PWC racing: the 2015 JetRacer
Endurance World Tour Championship. For 2015, this event is a two-round tour which begins with the very popular
Mark Hahn 300 on February 28. Competitors who opt to join the World Endurance Tour will have their watercraft
transported from Lake Havasu City to the second round in Vladivostok, Russia. Once in Vladivostock, there will be
an intense final round that lasts from August 11-16. For the inaugural season, there will be two competition cate-
gories: Pro/Am Runabout Open and Runabout Stock. Entry fees are $2,200 per team (in addition to Mark Hahn
300 fees). Each entry includes the following:
• Round trip shipping of a PWC from Lake Havasu City to Vladivostock, Russia and back to Lake Havasu City
• One hotel room, including breakfast.
