Well, I've searched around the forum and there's plenty of good advice on SS exhaust systems for the 80, but none of them relate to the NA 4.2 diesel (non-turbo).
Not to worry, methinks, they're all the same and I like the look of the 3" short system like Marius De Kock has, side discharge just in front of the rear wheel. Marius was very kind even offering a sketch of his system.
6 years ago, I spent a fortune on a Mr T steel system hoping it would last the 15 years or so that the initial system did. No chance! It's now rusted right through just at the bottom weld of the flexi (about where you HDJ boys' turbos are).
So, time to go SS and get a rust free system. The decision is made and I have found a reputable fabricator and on Tuesday I'll be blubbering into his yard to be measured up and hopefully by Friday, it will all be done and fitted.
I've read so much about boxless systems, Marius' short system and others, now I'm thinking that the short system may not work at all on a NA engine. There must be less back pressure (if that's anything like the term I should use) in a one box (or no box) system and I can't help wondering now if the non-turbo will lose power (OMG!) and/or be (even) less efficient than it is at the moment, heaven forbid!
Does anyone have any thoughts about whether there's a difference between the NA and the Turbo exhausts, besides the obvious?
The present system is full length with 3 boxes, the front expansion box, middle silencer and the tiny tail box, as far as I know, 100% standard.
It's highly unlikely that the SS fitting place will be able to properly advise me, so it's down to you professionals to share your wisdom with me! Please!
Not to worry, methinks, they're all the same and I like the look of the 3" short system like Marius De Kock has, side discharge just in front of the rear wheel. Marius was very kind even offering a sketch of his system.
6 years ago, I spent a fortune on a Mr T steel system hoping it would last the 15 years or so that the initial system did. No chance! It's now rusted right through just at the bottom weld of the flexi (about where you HDJ boys' turbos are).
So, time to go SS and get a rust free system. The decision is made and I have found a reputable fabricator and on Tuesday I'll be blubbering into his yard to be measured up and hopefully by Friday, it will all be done and fitted.
I've read so much about boxless systems, Marius' short system and others, now I'm thinking that the short system may not work at all on a NA engine. There must be less back pressure (if that's anything like the term I should use) in a one box (or no box) system and I can't help wondering now if the non-turbo will lose power (OMG!) and/or be (even) less efficient than it is at the moment, heaven forbid!
Does anyone have any thoughts about whether there's a difference between the NA and the Turbo exhausts, besides the obvious?
The present system is full length with 3 boxes, the front expansion box, middle silencer and the tiny tail box, as far as I know, 100% standard.
It's highly unlikely that the SS fitting place will be able to properly advise me, so it's down to you professionals to share your wisdom with me! Please!
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I'll give it a go!
