Re: Rabbit Farmer's various VW Projects
Posted: Wed Aug 16, 2023 7:12 am
While geeking out on Isaac's MK1 1.8T project on VWvortex this morning, I got some good ideas for my MK1 Scirocco.
Here is the project thread: The original 20vT mk1 "re-build" thread.
Meanwhile, work continues with the MK4 Golf.
The Tial turbo housing was very loose, yet the bolts were tight and, after removal, did not stretch.
The lip that connects to the Tial housing corroded over time and pretty much went away.
This picture shows me holding the mounting surface for the Tial away from the turbo center section. That difference is the missing center section mounting flange. This is why the Tial housing was loose. Some horsepowers snuck out.
Current turbo is Garrett Gen 1 GTX2863R. We are ordering a Garrett Gen 2 GTX2860R today. Around $1275 before shipping and taxes. Ouch.
I wanted something that works with the current Tial housing so that I didn't have to make any changes to the exhaust.
The 2860 should spool up a little quicker, and surprising, it actually has a little more horsepower potential because of the improved technology. I don't need more HP at the top end, but good to know it is an option.
The new turbo should be here in a week. Then we have to schedule a retune at VEMS before the Ascutney hillclimb.
I think over the winter I will take apart the engine to go through it for next season.
Steve
Here is the project thread: The original 20vT mk1 "re-build" thread.
Meanwhile, work continues with the MK4 Golf.
The Tial turbo housing was very loose, yet the bolts were tight and, after removal, did not stretch.
The lip that connects to the Tial housing corroded over time and pretty much went away.
This picture shows me holding the mounting surface for the Tial away from the turbo center section. That difference is the missing center section mounting flange. This is why the Tial housing was loose. Some horsepowers snuck out.
Current turbo is Garrett Gen 1 GTX2863R. We are ordering a Garrett Gen 2 GTX2860R today. Around $1275 before shipping and taxes. Ouch.
I wanted something that works with the current Tial housing so that I didn't have to make any changes to the exhaust.
The 2860 should spool up a little quicker, and surprising, it actually has a little more horsepower potential because of the improved technology. I don't need more HP at the top end, but good to know it is an option.
The new turbo should be here in a week. Then we have to schedule a retune at VEMS before the Ascutney hillclimb.
I think over the winter I will take apart the engine to go through it for next season.
Steve