Popular Post Phil Bennett Posted October 27, 2016 Popular Post Share Posted October 27, 2016 Hello. I've an R719LS with the ENDT864 engine. Those who are familiar with this engine will be aware it is the (not the best, it seems...) Mack V8 with the Twin Turbo set up. When acquired the truck it had (somewhere along the line) been fitted up with a single stack and both turbo outlets run into the one pipe. So, I decided to 'convert' (put back to original ?) the system back to a twin stack setup. 3 1/2" stainless pipe used throughout that I prepared and had welded professionally (Stewart welds pipework for airline refuelling rigs). Also bought some stainless silencers with a heat shield and 'custom made' some stainless brackets to attach top section of silencers to rear of cab using the existing mounting inserts. The whole system was then Powder Coated in a high temperature Axaltacs Matt Black (same stuff as used on flue liners), which has worked out very well. On tick over the engine sounds no different, but once on the move, it does sound quite 'burbbly'... Here are some images for you to see result. Er, well there would be if the 'system' allowed me... Contact me if anyone wants more info / images. Phil 3 Quote Link to comment https://www.bigmacktrucks.com/topic/47459-r719ls-twin-exhaust/ Share on other sites More sharing options...
39 Baby Mack Posted October 28, 2016 Share Posted October 28, 2016 I don't know about a west coast R model with the ENDT864 in it but the '67 F719T we had came from the factory with single 5" exhaust. If you're trying to keep it original I would check with the Mack Museum. Ron Sent from my SM-G900V using Tapatalk 2 Quote Link to comment https://www.bigmacktrucks.com/topic/47459-r719ls-twin-exhaust/#findComment-350189 Share on other sites More sharing options...
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