1929 - TR/OBR 4 Bolt Billet Piston Port CrankcaseRegular price $139.00
Shipping calculated at checkout.
<p>Dyno results are in. <span>We've had quite a few questions on the power difference between our case and a stock Zenoah case. Testing was done on our prostock g290rc we've been developing. We're seeing by just swapping to the TR/OBR billet piston port case more power</span><span class="text_exposed_show"> all the way across the board. 0.2 ft/lbs of torque and HP, broader powerband, +1500 rpm's and quicker crankcase temperature dissipation. You're not going to bolt this case onto a stock engine and turn it into a full mod or anything but you will see a noticeable difference in power.</span></p> <p>After the huge sucess of our reed case's we're proud to announce the release of our billet piston port 4 bolt cases. All excess volume has been pulled from the case to give your engine more power. <span>One of our favorite features is the three piece case design. Over our many years with large scale rc cars, we’ve seen our fair share of cracked crankcases. The TR/OBR reed case has a replaceable fan cover mount incase you ever crack or break it. This is a much cheaper alternative to replacing the whole or half case.</span></p> <p>We recommend any displacement Zenoah 4 bolt top end to match this case. RCMK top ends will only fit if the case is opened up or the skirts of the cylinder are turned down. We offer this service by request.</p> <p>Comes complete with bearings and seals installed</p> <p>If you have any stock or ported Zenoah engine this case can be swapped with no modifications. </p> <p>These cases do not use a crankcase gasket. Cases need to be sealed with a good sealant. OBR's sealant of choice is Threebond 1211. </p>