My turbo manifold has cracks in it...
#1
Lawn Ornament
Thread Starter
My turbo manifold has cracks in it...
Although fairly common, will i still be able to use this? Will I be able to get a rebuild done on them even though the manifold is cracked?
#6
Rotary Freak
My machanic has a set BNR stage 3 and they had cracks . He is having them welded by pro that can pre heat the parts for a proper repair. He has had this done before with lasting results. He also has made a bigger wastgate door. and moding the manifolds . If you can not make a new door , the pre spool door can be put in the wastegate place, it is 1/10 inch bigger, then the port can be bored to 1.30 inches Take the hot parts to a good welder and a machine shop to resurface what is needed
#7
Senior Member
The Mazda man was talking like the cracks inside the casting should be repaired lest the cracks grow and cause eshaust leaks at the gasket face. This is contrary to what I hear elsewhere, that cracks are common and just let them go. 1) How much cracking would be too much? 2) do they normally propagate and grow? 3) Is there any good way to repair cracks in the iron? castings, or would attempts make it worse? 4) Does Mazda themselves give any guidelines on this topic in the service manuals? Thanks