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HPI Racing - HPIG1408 HPI1408 1408 944258014081 4944258014081
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HPI Racing Nitro Star F4.1 Engine w/Pull Start
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HPI Racing Nitro Star F4.1 Engine w/Pull Start
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Tech Notes
This is the HPI Nitro Star F4.1 Engine with Pull Start
used in the Savage X.


Composite body slide valve carburetor with 7.5mm bore
Anodized purple oversize cooling head
SG (pilot) type crankshaft
Two year limited warranty


HPI Nitro Star F4.1 Engine with Pull Start, instruction manual,
R5 cold glow plug (HPIG1504), foam air cleaner assembly with four
zip ties, brass collet


Fuel: Car blend with 20-25% nitro content
Misc Items: Fuel tubing and track equipment


Specs such as horsepower, bore, stroke and RPM were not provided-
contact HPI for further infomation
High Speed Needle Setting: Turn clockwise in 1/8 turn increments
to lean fuel mixture. Do not exceed 2-1/2 turns from flush
Idle Adjustment: Adjust for about 0.04" (1mm) gap between slide valve
and carb body at bore opening
Low Speed Needle: No adjustment recommended
Displacement: .25 cu in (4.1cc)
Weight: 14.99oz (425g) without air filter

Distance Between Mounting Holes Same Side: 0.83" (21mm)
Distance Between Mounting Holes Opposite Side: 1.4" (36.5mm)
Height/Bottom Mounting Flanges to Top of Cylinder Head: 3.8" (96mm)
Height/Bottom of Crankcase to Top of Cylinder Head: 4.3" (110mm)
Length from Pull Starter to End of Crankshaft: 4.4" (113mm)
Length from Pull Starter to Front Bearing: 3.3" (84.3mm)
Length from Center of Crankcase to End of Crankshaft: 2.9" (75mm)
Diameter of Exhaust Outlet: 0.59" (15mm)
Diameter of Carburetor Opening: 0.53" (13.5mm)
Diameter of Carburetor Bore: 0.29" (7.5mm)

jxs 4/27/06

– If you need more information, use these HPI Racing resources –
Click Here: Manufacturer's Product Web Page
Email: support@hpiracing.com
Web Site: http://www.hpiracing.com/
Phone: 888-349-4474
  Postal Address:
HPI Racing

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Accessories Needed

Accessories for the HPI Racing Nitro Star F4.1 Engine w/Pull Start

Primary Accessories   Building & Field Equipment Optional Accessories
  Special Stock Number Product Description Parts Saver Eligible Tower's
Low Price
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 LXUM80 Duratrax Glow Starter C Battery
Qty Discount Available
7.99   In Stock
 LXCMDL Fuji Batteries C Alkaline Battery (2)
Qty Discount Available
4.69   In Stock
 LXK129 Great Planes Silicone Fuel Tubing Standard 3'
Qty Discount Available
2.99   In Stock
 LXFU76 Sullivan CT-1 Screen Fuel Filter
Qty Discount Available
3.79   In Stock
 LXRXC9 Tower Hobbies TOWER Power 20% Car Fuel Quart
Qty Discount Available
10.69   In Stock
Subtotal for this Group of Accessories: 30.15  
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Primary Accessories   Building & Field Equipment Optional Accessories

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