08-11-2020, 08:29 PM
I had a little blow-by from the manifold I built for the supercharged car and as the flange plate was rather thin I was reluctant to consider skimming it.
Instead I bolted it up tightly to the thick steel plate I use as a manifold building jig and heated it up red-hot with a very large propane torch, when it was all glowing red, I thumped the back of the manifold plate a few times with a large hammer between all the bolts. The shock waves then caused the flange to pull up tight and the #1 pipe now has a tiny ripple in it where the 'warp' on the plate ended up. End result was 100% true without the need to remove any metal off the plate.
The propane torch is a USA weed burner and they are used for applying Torch-On waterproofing products as well. I run it off a 19KG cylinder
Aye
Greig
Instead I bolted it up tightly to the thick steel plate I use as a manifold building jig and heated it up red-hot with a very large propane torch, when it was all glowing red, I thumped the back of the manifold plate a few times with a large hammer between all the bolts. The shock waves then caused the flange to pull up tight and the #1 pipe now has a tiny ripple in it where the 'warp' on the plate ended up. End result was 100% true without the need to remove any metal off the plate.
The propane torch is a USA weed burner and they are used for applying Torch-On waterproofing products as well. I run it off a 19KG cylinder
Aye
Greig