Sunday, 23 October 2016

Brazil Kombi - Vintage Speed Exhaust

VW Brazilian Kombi Bay - Vintage Speed

After my exhaust finally gave up and the last exhaust box fell off it was time to fit my new exhaust.

After considering the options (see earlier post) I decided to go for the Vintage Speed system.


Here is the old back box. Clean break at the pipe inlet. Also to note the quite large hole in the top where the water drips on the box.


Here is the old system in place with the bumper & valence removed for easy access.

Carefully removed all nuts from the old system (especially the head nuts as I did not want to damage or pull out the head studs.... Plenty of WD40 first!)


Old system removed


Old header, CAT, & J-Tubes


Old Boxes (note the bandages holding the other box together)

New Vintage Speed Exhaust:


Here is the details of the Vintage Speed exhaust. Bought the standard exhaust as its good enough for the 1600cc. Purchased the 38mm s/s J tubes (could have gone for 35mm but decided bigger is best if I ever uprate the engine at a later stage)



New vintage speed exhaust system laid out.

Now the kit came with the adapters from the standard classic bays using the flared adapters for heat exchangers. As I am using 38mm Flanged J-tubes these are not required BUT new flanged adapters (approx 1-2" length are required)

These adapters where out of stock at VW heritage so order from Machine 7 BUT they where the wrong ones!



So found the correct ones and went straight to Vintage Speed UK (Thanks to Dan for quick dispatch) but they will not arrive until Tuesday.

Will update this post WHEN they arrive........ Stay tuned.

**UPDATE **

So final parts arrived and full exhaust fitted. 

First impressions - Nice sounding exhaust not under load but quite quiet during idle and constant acceleration.

Still have the feeling that the system is running rich and had a few issues with a lumpy idle. Suspect a vacuum leak and throws a Lambda and adaption DTC fault code after a few months of driving BUT the DTC clear and I cannot find any other issues.

Logs taken show good Lambda sensor switching once per second and running from about rich @ 0.8v to lean @ 0.1v with the average being 0.45V (Lambda = 1) for the data shows its running fine and spot on 14.7:1 ratios

So will see at MOT time if the emissions are OK (worried a little about not having a CAT but if running Lambda of 1 should pass)


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