16-04-2013, 01:53 PM
The stock cylinder head is of no markable restriction until past 170hp. And the ports of the cylinder head aren't the issue, you'll have greater issues to overcome at around 170-180hp.
At 200hp I'd be looking at longer duration cams and opening up the ports for a bit extra flow, but seemingly nowhere really knows what they're doing with DI Diesel cylinder heads in the UK, there's not many places I'd trust taking a head to and be sure that it's going to be an improvement. Same with cams.
At 200hp I'd be looking at longer duration cams and opening up the ports for a bit extra flow, but seemingly nowhere really knows what they're doing with DI Diesel cylinder heads in the UK, there's not many places I'd trust taking a head to and be sure that it's going to be an improvement. Same with cams.
