Harley-davidson twin cam cnc ported heads

#HARLEY DAVIDSON TWIN CAM CNC PORTED HEADS UPGRADE#
#HARLEY DAVIDSON TWIN CAM CNC PORTED HEADS FULL#
#HARLEY DAVIDSON TWIN CAM CNC PORTED HEADS PRO#
#HARLEY DAVIDSON TWIN CAM CNC PORTED HEADS SERIES#

The intake valves are in the 2.700Лќ range and the exhausts are 2Лќ. The total head is 8.700Лќ tall with rocker covers in place.

#HARLEY DAVIDSON TWIN CAM CNC PORTED HEADS PRO#

It resembles a GM Pro Stock car head in valve train and combustion chamber design and is carved from a solid block of aluminum. Where the cast Pro Stock still uses the stock EVO valve train architecture, this beauty is all different. This is a clean sheet design aimed directly at NHRA pro stock. S&S Billet Pro Stock for Buell and Victory The S&S billet Pro Stock Head has more in common with automotive mountain motor heads than anything offered on a factory H-D.

#HARLEY DAVIDSON TWIN CAM CNC PORTED HEADS SERIES#

Testament to this series head is that the B2 head also holds the Hot Street and Dresser records (eight total) in the American Motorcycle Racing Association (drag racing). This head still does an excellent job on its home power plant with crate 143s making around 165 hp (rear wheel) and modified versions reaching into the 190 hp range.

The valves are shorter and it appears to me that the ports are slightly lower to get the package short enough. The large bore of the T143 also let S&S use the 2.300Лќ intake valve to help feed this big bad mill. This head is basically a shortened version of the B2 to allow the S&S T143 engine to fit in a stock FLH chassis as well as Dyna models. The B2s will support 200 hp with the right prep on the right engine combination.ДЄ variation on the B2 is the B3. It will support bore sizes from 4.125Лќ to 4.500Лќ. The intake seats will allow 2.300Лќ diameter valves to be cut in with valve to valve still adequate for the big cam grinds. The valve size is 2.200Лќ on the intake and 1.800Лќ on the exhaust. The B2 comes CNC ported with plenty of room to enlarge for big cubes. The S&S rocker box is a bit shorter that the OEM to allow a taller head to fit several stock chassis combos. Also do your homework to see if any other builders or riders have had experience with the product you are considering.ДЄn S&S B2 head is almost 4Лќ tall and 6.150Лќ tall with the S&S rocker box on top. You just have to be sure that the heads will do what the supplier says they will do and sometimes the only way is to try them. That does not mean that there are not some fine CNC options out there that will produce your customersвЂ™ desired result. We prefer to do each job that comes in on a one-by-one basis to ensure that each client gets exactly what they are looking for. Kibblewhite and GoodsonвЂ™s AV&V lines are good one-stop sources for most street performance components.ДЄlthough we do custom work for this market, sometimes starting with an aftermarket CNC-ported head, we do not offer any CNC finished heads. The heads are then reassembled with performance guides and stainless valves held in place with a spring and retainer package that matches the cam choice. Oversized intake seats are used to support the intake valve diameter.

#HARLEY DAVIDSON TWIN CAM CNC PORTED HEADS FULL#

On these we remove the factory guides to allow a full port operation. 560 lift we have also seen 141 horsepower from the same porting with a slightly hotter cam).ДЇor those of you seeking even more performance we offer the вЂњ Power Port.вЂќ Larger intake valves and more intensive porting make this the choice for high revving/ high horsepower motors.Д¬lick the links to your left for more information on these porting jobs for either ScreaminвЂ™ Eagle or stock Twin Cam castings.Next in line is a 2.00Лќ valve modified head still using the same 1.610Лќ exhaust valve. Likewise the вЂњTorque Port on ScreaminвЂ™ Eagle 110 heads will support over 130 horsepower (we have seen 128 horse at the rear wheel using a fairly mild cam of only. It flows more than enough to support well over 100 rear wheel horsepower and 100 ft lbs of torque on a 95 inch (more on a 103) using your stock head castings.

#HARLEY DAVIDSON TWIN CAM CNC PORTED HEADS UPGRADE#

The вЂњ Torque PortвЂќ is a great upgrade for your stock heads and gives the biggest bang for the buck. We have recently streamlined our process and now offer two different types of port job. Results may vary slightly due to differences in casting between heads of the same typeДЄs can be seen from the above chart, there is potential for major improvement, both in the stock Twin Cam castings and the ScreaminвЂ™ Eagle heads. Cylinder Head Porting, Antique and Hi-Performance American MotorcyclesДЇlow figures are based on testing on our SuperFlow SF600 flow bench 28вЂќ test pressure.

Harley-davidson twin cam cnc ported heads