Top Post Dawg
- Apr 27, 2003
- 1997 Passat TDI White,99.5 Blue Jetta TDI
If you go that high you will really need to watch the EGT's, I have taken things about high as they can be taken by installing larger diameter tires on a 1Z Passats. EGT's climb through the roof pretty quick under heavy loads at speed with gearing that tall.fyi your dhl is 2.66 final drive 5th. Try to get a dqs-2.15 final drive in 6th if your insistent on a 6sp. Frans has them from time to time for arround $2500. I got a european tdi fhn 5 sp-2.36 from him. Sweet ride YA GOT THERE!
Monitoring oil temps along with the adding of extra oil cooling is also a good idea if you are going install taller gearing.
Something else I have found that helps with EGT spikes is the adding of a water jet in front of the inter-cooler. A windshield washer bottle and motor works very well for this, junk yards are full of options that will work. Regular water in summer and washer fluid during colder months.......