[K1W1]

Hi,

I have extensive experience with this exact problem.

Cat used to use a stainless steel bellows and 4 half flanges to connect each turbo outlet to the pot in the middle, they went away from this in the mid 1990's, replacing this with two fixed rings and a centre piece with rings on each end not totally dissimilar to Piston Rings. These all leaked like sieves no matter if they are in boats or trucks.

I have retro fitted the bellows off the D 398 to a set of engines to cure this and have had custom made ones to remedy it on another pair of engines where the housings were a different size to the 398's

Cat have now gone back to using the bellows type arrangement on the Series 2 engines I am using now.

If you send me a PM with your e mail addy I will give you the name of the guy I deal with at Pantropic in Ft Lauderdale who helped me out with the parts in the past.

I don't have a drawing of your setup but I could draw one from memory if you wanted to see the difference.

Here is the page out of the parts book showing the current setup.