I've already done a run through on how to
Mod a DDC inlet to 1/2" to 1/2" but this one is a bit different so will add it to the log anyway
The pictures speak for themselves really but i'll do a running commentary best i can between pics (and there's quite a lot of them so be warned)
Started off by demmeling out the centre section
but this time once the hole was drilled used a 9/16" UNF tap
so the Danger Den Hi-Flow barb screwed in like so!
Then filled it up with 2 part Araldite and left it to go hard..the glue that is
I also cut the thread from another DD barb and glued that on the out-let as well
Now for the fun part. Filled the top of the pump with 2 part body filler...
....just like icing a cake
Then sanded it down with ruff sand paper and filled the low spots with more filler.
Filled and sanded a couple of times then moved on to smother wet n dry paper till all the imperfections were gone
Masked the barbs off
