cheekychimp
Well-known member
Heat cycling I know but what makes some exhausts and turbo housings do it when others don't?
Imperfections in the castings creating hotpots?
Hairline cracks that aren't repaired and expand?
Bad tuning?
If you have an expensive cast manifold you want to use but are worried about it cracking, what can you do? I have discussed the idea of extrude honing it to remove any imperfections in the casting and smooth out possible hotspots and ceramic coating the exterior. Expensive I know, but would it help prevent damage from heat cycling or is it just inevitable?
Imperfections in the castings creating hotpots?
Hairline cracks that aren't repaired and expand?
Bad tuning?
If you have an expensive cast manifold you want to use but are worried about it cracking, what can you do? I have discussed the idea of extrude honing it to remove any imperfections in the casting and smooth out possible hotspots and ceramic coating the exterior. Expensive I know, but would it help prevent damage from heat cycling or is it just inevitable?