Re: 5-Cylinder turbo golf
Posted: Tue Apr 25, 2017 9:37 am
They are ten-a-penny in the USA, so cheap to buy on eBay.
Shipping it here was a bit of a nightmare though.
I see TT-RS engines for sale on German eBay for 10,000 Euros......
More updates coming soon. Bottom end is still getting machined.
The spare head I bought arrived. Stripped it down. I will probably use that one as the cam journals look a bit worn on the head that came with my engine. Something went wrong with that one to cause the cam lobes and rockers to get so pitted.
The head design is a work of art. The walls of the exhaust ports are relatively thin and bathed in oil to help cool them down. Its such an intricate casting. Will post some photos.
I still cant get my head around the rocker arrangement in these engines. I'm familiar with old V8 pushrod/rocker where they are all slotted on a central shaft which forms a pivot point. Pushrod moves one side of the rocker up and the other side presses down on the valve.
On the VW engine however the rocker is completely floating - one end clips to the tappet (which moves), the other end sits on the end of the valve (which moves) and the cam lobe (which also moves) contacts the middle of the tappet.
Shipping it here was a bit of a nightmare though.
I see TT-RS engines for sale on German eBay for 10,000 Euros......
More updates coming soon. Bottom end is still getting machined.
The spare head I bought arrived. Stripped it down. I will probably use that one as the cam journals look a bit worn on the head that came with my engine. Something went wrong with that one to cause the cam lobes and rockers to get so pitted.
The head design is a work of art. The walls of the exhaust ports are relatively thin and bathed in oil to help cool them down. Its such an intricate casting. Will post some photos.
I still cant get my head around the rocker arrangement in these engines. I'm familiar with old V8 pushrod/rocker where they are all slotted on a central shaft which forms a pivot point. Pushrod moves one side of the rocker up and the other side presses down on the valve.
On the VW engine however the rocker is completely floating - one end clips to the tappet (which moves), the other end sits on the end of the valve (which moves) and the cam lobe (which also moves) contacts the middle of the tappet.