|
Products > Engine Top End > Head Kits > NEW! Big Bore
NEW! Big Bore Head Kit
When Delkron decided to manufacture cylinder heads we felt that there was no added cost in casting a "good port", versus "machined ports" where there is a lot of additional cost. So our cylinder head flow engineers applied this theory and our ideas to develop a redesigned intake and exhaust port that gives us a much improved flowing head within the confines of a near stock exterior. This produced a much more efficient head to be used on the Harley-Davidson® Twin Cam® engine. Delkron's 2-Cam heads are made from 20% stronger permanent mold castings and machined for highest possible quality. They have nitrided stainless 2.02" intake valves and 1.610" exhaust valves with increased port diameters for improved flow that is only found on professionally hand ported performance heads. Upgraded springs and collars will accommodate up to .640" total lift making these heads a dream come true for performance upgrades or top aftermarket bike builders.
 NEW! 95cc CNC’d Combustion Chambers! We have brought our cylinder heads to another level. By performing our patent pending CNC procedure on our already proven cylinder heads we have improved combustion through increased laminar flow. We ensure exact dimensioning and reliable repeatability, with the added benefit of increased horsepower and torque. Throughout our testing we were able to achieve a 4% horsepower and a 6% torque increase simply by changing the combustion chamber! These heads use the same components as our “as cast” heads.
NOTE: All testing was performed on our Land & Sea eddy current dyno using our Delkron 107” kit with Red Shift 577 cams, Twin Tec Ignition, and S&S G carb in a 2000 FLHTC. Before head change HP=99.79 @ 5300 rpm and Torque=121.05 @ 3900 rpm. After only a cylinder head change, HP=103.5 @ 4900 rpm and Torque=128.25 @ 3600 rpm.
Technical Specs
The Big Bore heads have a pattern to accommodate Delkron's 4.250" crankcase and cylinder stud pattern. The head kit comes The head kit comes assembled with seats, valves, springs, collars, retainers, and guides; also included are the intake manifold, manifold seals and head gaskets (base and rocker box gaskets not included, shown for illustration purposes only). These heads are machined for compression releases (shown in picture for illustration purposes only), and are available at additional cost. Kit Supplied with Cometic Gaskets.
| Available Finishes |
Black
|
Natural
|
|
Links (PDF Format)
|
 |
NEW! Delkron Big Bore Head Kit
|
0 Items in Cart - Checkout > 
Delkron Manufacturing/Cometic Gasket Inc | 8090 Auburn Rd. | Concord, Ohio 44077 | Site Map
