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Replacement exhaust manifold DX

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Any recommendations on replacing the toilet bowl exhaust manifold with a new stainless one? Pipework from the gasket/seal is pretty shot, doesn't leak but its rusted to high hell and had to repair some bits on it further down. Time for a nice new one. Swapping is no problem, just looking for a recommendation of a particular one offline etc. Its 1992 Rivage DX engine and has what i think is cat mid way down but could just be a mid silencer. Should be fine getting rid?

Thanks
 

Last edit: by Bradcab

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The lovely Toilet Bowl flange was a way better designed one than the ones on my 90's Digifants.  I replaced all three of the ones on my Cabbies for various cracks in them I had one that used to whistle like an air cooled
Bug back in the day.  2 were cracked so bad that I couldn't pass emmissions.

Screen Shot 2024-05-09 at 8.17.11 AM.png

I opted on my Digis to go the G60 and 4-2-1 dual piped manifold, and a dual down pipe, First one was pricey, but the return in SOTP feel as 200 hp boost.  

I made a Dual Down for my second one that worked well.

I bought a RACELAND header assembly to replace it but never got around to it.    

The Forward silencer on the system isn't a silencer it is
a Pneumatic Hammer arrester (resonator) it stops the hammering effect of the exhausts. but doesn't interfere with the flow as when intact it is a sealed pipe that is surrounded by a Sealed Metal jacket.  I never took them off as I liked quiet.  

The Catalytic pervertor was a round or flat object of disdain that was before the Shifter box and right after the Down pipe 90 bend before heading to the rear.  

So you had a  manifold, down pipe, Catalytic convertor, resonator, then Silencer.

If you go with a header or a dual down affair, do not forget to include a flex connection between the down pipe and the back run.  It stops the headers from Cracking after a bit from torque shift and the pipe from rattling against the chassis with engine flex.

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I did once find a Stainless Toilet bowl flange listed, can't remember where, but it was almost as much as the Stainless Raceland that I bought.

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