6283 - CNC Ported Full Mod 29.5cc TR/OBR 4 Bolt Reed Case EngineRegular price $525.00
6282 - CNC Ported Full Mod 29.5cc TR/OBR 4 Bolt Reed Case Long BlockRegular price $425.00
1722 - 5hp CNC Ported PROSTOCK 29.5cc 4 Bolt Long Block - Billet CrankcaseRegular price $239.00
1720 - CNC Ported Full Mod Zenoah 29.5cc 4 Bolt Long Block - Billet CrankcaseRegular price $275.00
1719 - CNC Ported Full Mod Zenoah 29.5cc 4 Bolt Engine - Billet CrankcaseRegular price $349.00
This engine now comes with a TR/OBR billet crankcase at no extra cost. Every long block or engine is now CNC ported and hand finished. CNC porting and hand finishing is all done in-house by the OBR staff. We do not contract out any of our porting so every engine is modified to our exact specifications. We are able to offer higher accuracy this way as well as more power. Our CNC machine has allowed us to take our porting to the next level due to us being able to do cylinder work that is not possible to do by hand.
The 29.5cc is a great all around performing engine and can be used for most applications. The big bore 36mm top end with a 1mm stuffed crank is a great balance of torque and rpms.
This isn't your run of the mill quick and dirty garage port job. The staff at OBR has over 20 years combined experience tuning engines. We know how to get the job done right the first time with out breaking the bank.
To start we machine the combustion chamber for a proper squish clearance and compression ratio. We learned a long time ago that stacking and/or using thicker cylinder gaskets does not make power. From there the cylinder and piston are aggresively modified but not to the point where reliability and ease of use is lost. Reliability and ease of use is always our first objective when we tune an engine. Every port in the cylinder has been professionaly modified and the piston has been lightened and relieved.
This engine fits:
* Tech Note: Installation in an HPI Baja requires that the stock Zenoah clutch be modified for a direct bolt up. Or the clutch from your stock fuelie 23/26 can be installed on this engine for a direct bolt up. The last option is a TR/OBR sealed clutch housing. The sealed clutch housing can be used with a machined CY clutch plate for a direct bolt up.
Off-road Rc Cars: HPI Baja 5B/5T/5SC, MCD, Rampage, FG Marder, FG Marder Race, FG Monster Beetle, FG Monster Beetle Pro,FG MT5,FG Stadium Truck, Duratrax Firehammer, Carson Attack, Smartech Traveller,FG Leopard, XTM, Leopard Race, FG Leopard STX, FG Marder Beetle, FG Pajero and most other large scale cars.
On-road Rc Cars: MCD, FG Evo,FG Sportline, HARM,FG F-1 Competition and most other large scale onroad cars.
6222 - Full Mod EFRA Legal G270RC 25.4cc Engine - Billet CaseRegular price $499.00
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6261 - 5.5hp CNC Ported PROSTOCK 30.5cc 4 Bolt Long Block - Billet CaseRegular price $239.00
6257 - CNC Ported 5.2hp Prostock 28.5cc G290RC 4 Bolt Long Block - Billet TR/OBR CrankcaseRegular price $229.00