05-05-2009, 07:41 PM #1
West Coast Cylinder Head CNC porting service for 4-tec heads
Rude Performance, in conjunction with West Coast Cylinder Heads (WCC) is pleased to announce a CNC Head Porting Program for your Sea-Doo heads.
Itís a package that includes: CNC porting of your complete head, valve job, head surfacing and reassembly of the head. It will be available for either stock or over sized valves.
Air Flow numbers Intake Port
Valve Lift Stock Intake Port. CNC Big Valve Port.
0.100 104 CFM 104 CFM
0.150 155 CFM 157 CFM
0.200 199 CFM 199.5 CFM
0.250 235 CFM 243.5 CFM
0.300 256 CFM 284 CFM
0.350 264 CFM 314 CFM
0.400 270 CFM 332 CFM
0.450 273 CFM 337 CFM
Air Flow Numbers Exhaust Port
Valve Lift Stock Exhaust Port CNC Big Valve Port
0.100 89 CFM 91 CFM
0.150 130 CFM 140 CFM
0.200 162 CFM 178 CFM
0.250 188 CFM 201 CFM
0.300 204 CFM 221 CFM
0.350 215 CFM 233 CFM
0.400 218 CFM 241 CFM
0.450 223 CFM 246 CFM
All flow numbers were achieved with Ferrea light weight valves.
Price is $1200.00 not including return shipping.
Orders to be placed here.
Once the order comes through I will respond with the address to ship your head along with special shipping instructions.
Valves are not included. No parts will be replaced; your original parts will be used unless you opt to purchase new. Valves, springs, retainers, spacers, valve stem seals, valve guides can be purchased from the green hulk OEM online store to be installed on your used cylinder head.
05-05-2009, 07:59 PM #2
- Join Date
- Jul 2006
Beautiful work Jerry and Nils!!
05-05-2009, 08:07 PM #3
05-05-2009, 08:11 PM #4
05-05-2009, 08:16 PM #5
05-05-2009, 08:23 PM #6
the flow numbers are good but people have to understand that Richard and Nils ported my head in 2005 when my SC RXP ran 86mph. These guys know what they are doing, there are alot of butchers around that will make it worse and Richard is not one of them. They are the best and thats why I use them!
05-05-2009, 09:07 PM #7
I keep thinking oversize exhaust valves and port work for the turbo conversion guys would be the ticket to big HP numbers.
I used Ferrea over 25 yrs now. They work plain and simple.
05-05-2009, 09:14 PM #8
05-05-2009, 09:28 PM #9
05-05-2009, 09:28 PM #10
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