10-11-2020, 07:53 PM
(09-11-2020, 04:38 PM)mopetta Wrote: Thanks for the feedback. The main issue I have is thin backplate of my exhaust. I have a new backplate from the cherished suppliers
but it does not fit well to the pipes of my exhaust.
Another option you have is to weld the new backing plate or flange plate directly to the existing one, so to 'create' one thick plate. If you bolt the whole lot to either a head or a thick manifold building plate like mine you should be able to TIG weld the 2 flanges together. Once you have done this you can carefully TIG weld the inside of the ports together and then grind & file everything smooth in the ports and you can grind to match the block ports. Thinking back on our build, the job lot of aspirant Ulsteroid bits came with a flange that didn't match up to the block, so we made our own ones off a block which matched up perfectly. I probably have a spare & can get them cut here, I can post you one, but we're half a world away from Yonder Isle, so it would probably pay you to make a paper template of what you want & have a local Lazer-Cut / Water Jet Cut place make you another flange - PM me if you want to chat further re the flanges
I use Wurth high heat exhaust assembly paste for sealing the exhaust gaskets and then STAG jointing paste for sealing the threads on the manifold bolts - in my case I use Allen head screws to hold my manifold onto the block. Dip to get a good thick layer over most of the thread & then bolt into place so the excess fills the space around the bolt shank in the manifold plate.
Aye
Greig