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Hot Bodies - HBSG6540 HBS106540 106540 944258005584 4944258005584
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Hot Bodies HB 21XZ-B Hara Edition Nitro Engine
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Hot Bodies HB 21XZ-B Hara Edition Nitro Engine
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Tower Catalog Page: 197

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Tech Notes
This is the 21XZ-B Hara Edition 1/8 scale Buggy Engine
from Hot Bodies.
Exact spec engine used by Atsushi Hara
at the 2010 Worlds in Thailand.

******Because of the expressed racing nature of this engine,******
******it is NOT covered by the 2 Year Warranty******


DLC coated crankshaft with silicone filled intake passage for
improved fuel flow
ABC piston and liner construction "A"luminum piston fitted to a
"B"rass cylinder liner that is "C"hrome plated
21JS slide valve carburetor with 6mm carb reducer that restricts
airflow helping to increase the amount of torque produced
Black anodized crankcase
Lightened and laser-etched Hara edition cooling head
Steel rear ball bearing


21XZ-B ABC Buggy Engine with Slide Valve Carb, P3 Turbo Glow Plug,
Exhaust Seal Ring, Instruction Manual and Black 6mm Carb Reducer


Fuel: 10-30% nitro content, 20% recommended for break-in
Exhaust System: Depending on vehicle
Glow starter, fuel tubing and track equipment


Displacement: .213 cu in (3.49cc)
Output: 2.65 PS, 2.61 HP/34,000RPM
Practical RPM Range: 4,000 - 40,000
Power Output: 2.6ps / 34,000RPM
Bore: 0.641" (16.27mm)
Stroke: 0.661" (16.8mm)
Weight: 12.76oz (362g)
Crankshaft Size: UNF1/4-28
Distance Between Mounting Holes Same Side: 0.83" (21mm)
Distance Between Mounting Holes Opposite Side: 1.45" (37mm)
Height Bottom of Mounting Tabs/Top of Cylinder Head: 3.4" (86.5mm)
Width at Mounting Tabs: 1.8" (45mm)
Width of Crankcase below Mounting Tabs: 1.2" (31.6mm)
Distance from Backplate to Front Bearing: 2.5" (64.5mm)
Distance from Center of Crankshaft to Front Bearing: 1.7" (44mm)
Distance from Center of Crankshaft to Backplate: 0.81" (20.5mm)

Carburetor Settings, NOTE carburetor is preset at factory and
requires very small adjustments
Needle Valve: Approximately 3.5 turns open from fully closed
Throttle: Approximately 0.5mm open from factory setting with
reducer removed
Metering Needle: Rotate until slotted head is 1.5mm away from ball
link body
Mixture Control Valve: Rotate until slotted head is flush with
carb body

jxs 04/04/13

– If you need more information, use these Hot Bodies resources –
Web Site:
Phone: 888-349-4474
  Postal Address:
Hot Bodies

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Accessories Needed
This is the Hot Bodies Hara Edition 21XZ-B ABC 1/8 scale Engine w/21JS Carb. FEATURES: Tungsten weighted silicone filled crankshaft, slide valve carb w/6mm reducer, P3 turbo ultra hot glow plug and instruction manual, black anodized crankcase, laser-etched Hara edition cooling head REQUIRES: Fuel, air filter, exhaust system, track equipment

Accessories for the Hot Bodies HB 21XZ-B Hara Edition Nitro Engine

Primary Accessories   Building & Field Equipment Optional Accessories
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 LXRXC9 Tower Hobbies TOWER Power 20% Car Fuel Quart
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10.69   In Stock
Subtotal for this Group of Accessories: 10.69  

Primary Accessories   Building & Field Equipment Optional Accessories

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