TomiPopovski Posted November 2, 2016 Report Share Posted November 2, 2016 Hi guys, I'm new here. Wanted to ask if I can do a bolt on gearbox change from any 1.9TDI (doesn't matter if it's 5 or 6-speed)? Also, I had a remap and it's running about 96bhp and 280Nm. Are a bigger turbo, injectors and another remap going to get me to about 150? Thank you Quote Link to comment Share on other sites More sharing options...
wehey Posted November 2, 2016 Report Share Posted November 2, 2016 I have done a fair bit of research on the gearbox thing and as far as I could see, the 1.9 Tdi won't fit. When I replaced mine I found that the early Polo 1.4 Tdi boxes fit. As long as they have the EXB code it will work Quote Link to comment Share on other sites More sharing options...
TomiPopovski Posted November 3, 2016 Author Report Share Posted November 3, 2016 And what about from petrol engines? Would any of those fit? Quote Link to comment Share on other sites More sharing options...
wehey Posted November 4, 2016 Report Share Posted November 4, 2016 I doubt it. Plus the ratios would probably be wrong too Quote Link to comment Share on other sites More sharing options...
jonny s Posted November 8, 2016 Report Share Posted November 8, 2016 150hp can be done, you could use parts from a gt tdi. why the change of gearbox? Quote Link to comment Share on other sites More sharing options...
weslangdon Posted November 9, 2016 Report Share Posted November 9, 2016 could the ratios in the 6 speed gti gearbox be altered to suit the tdi, basically keep the 5 tdi ratios and add an overdrive ratio as the 6th Quote Link to comment Share on other sites More sharing options...
TomiPopovski Posted November 9, 2016 Author Report Share Posted November 9, 2016 The gearbox is the main problem, I have problems with downshifting. Whenever I downshift, I fake a 2 speed downshift and then upshift (5th to 3rd, don't release clutch, into 4th). And for stage 2 I was looking at larger injectors, bigger turbo, remap, and then other stability add ons. Quote Link to comment Share on other sites More sharing options...
jonny s Posted November 27, 2016 Report Share Posted November 27, 2016 3rd syncro seems to be a common issue with the tdi box for some reason. I have one spare in the garage with the same issue from an old polo. 1 Quote Link to comment Share on other sites More sharing options...
weslangdon Posted November 28, 2016 Report Share Posted November 28, 2016 without changes to the g/box top speed will never exceed 107 and if you indent exceeding 100bhp it would have the potential to go much faster than that, possibly into gti territory Quote Link to comment Share on other sites More sharing options...
TomiPopovski Posted November 28, 2016 Author Report Share Posted November 28, 2016 I have driven it 207km/h with this setup, but I'm not aiming for top speed, acceleration is my main goal. 1 Quote Link to comment Share on other sites More sharing options...
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