Graham Baggaley Posted September 30, 2021 Report Share Posted September 30, 2021 Hi all. I started a thread last month about wrapping exhaust manifolds. Some interesting responses. Definitely some opinions out there! Thank you all for your thoughts. My next question on manifolds is fitting. I have bought a 4-1 stainless manifold but looking at the flange it is made of 10mm stainless. The flange on the inlet manifold (original) is made of 1/2 inch plate. this can’t be a new problem? I guess people have dealt with this before. my question is what was the most effect way? mill the edges down on the the inlet manifold? Spacers on top of the exhaust manifold? Adapt the lugs that hold the two in place? thoughts welcomed. Quote Link to post Share on other sites
Lebro Posted September 30, 2021 Report Share Posted September 30, 2021 I drilled & tapped the clamps at one end only to take a small (M4 I think) screw. the height of the head of the screw equated to the difference in thickness of the manifolds. Bob. Quote Link to post Share on other sites
rcreweread Posted September 30, 2021 Report Share Posted September 30, 2021 Graham - if you have access to welding equipment, put a blob of weld on the end of each clamp which covers the exhaust manifold ends - then grind it down to correct depth so you have a stepped clamp - very common issue! Cheers Rich Quote Link to post Share on other sites
Ian Vincent Posted September 30, 2021 Report Share Posted September 30, 2021 I welded small packers on the exhaust manifold at the relevant points to bring the thickness up to that of the inlet manifold. Rgds Ian Quote Link to post Share on other sites
Andy Moltu Posted October 1, 2021 Report Share Posted October 1, 2021 The clamps are a reasonably loose fit on the studs and there seemed to be enough rock on mine for them to clamp the exhauts and inlet manifolds. It is a bit strange that they continue to manufacture the manifolds with 10mm plate rather than 12 or 13mm which is closer to the 1/2 inch. Quote Link to post Share on other sites
stillp Posted October 1, 2021 Report Share Posted October 1, 2021 2 hours ago, Andy Moltu said: It is a bit strange that they continue to manufacture the manifolds with 10mm plate rather than 12 or 13mm which is closer to the 1/2 inch. 20% thicker means 20% more expensive Andy. Pete Quote Link to post Share on other sites
Graham Baggaley Posted October 7, 2021 Author Report Share Posted October 7, 2021 Thanks all fun with the welder it is then Quote Link to post Share on other sites
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