View Full Version : Cast Iron Manifold Welder
im chasing down a welder that can weld a pipe onto my cast iron manifold as i want to fit my 35mm garret external wastegate.
oh and in melbourne somewhere. all help will be appreciated
and also how long does it take to weld to cast ??? i hear you need to bake the manifold first before you can weld it.
The Yellow Pages will list a range of specialists that do this. I use (or used to) a guy in Ferntree Gully....Bob Black, but I believe he's retired, I'll see if I can find out.
Welding of CI is usually done with special high nickel rods and is actually closer to a form of brazing. Anyway, pre-heating and slow cooling after welding is recommended for CI castings to minimise distortion, residual stresses and post-weld cracking.
thank you very much mate
ill hook into it tonight and hopefully someone can do it tomorrow.
i want my gate and malpassi and my 1.06 exhaust housing all on.
more power and alot more kick in the ass with the 1.06 exhaust housing when i finaly hit boost.
good thing i have a 3500 convertor to help
:) :) ;)
welding of cast iron is rarely 100% successful. don't be too surprised if it developes cracks at some point.
sik em wrex
07-02-04, 12:39 AM
To avoid cracking,peen the weld with a chipping hammer to relieve
the strees on the weld,this helps alot.
07-02-04, 10:06 AM
if your gonna get all that work done why not just get a proper steam pipe manifold made up way better IMHO
hahaha and also costs over $1000
so no, i like the idea of modifying the standard manifold as ppl are running 10's with standard manifold anyway.
i have met an engineer through my brother in law.
he is actualy going to mill the manifold at work and make a 1.1/4" hole and tap it with a BSP thread.
a) Tapping it means no heat so no chance of hairline cracks or the welds stuffing up 6 months later.
b) being threaded means that the gate can be removed and place a 1.1/4" bsp bolt into the manifold for no leaks and no gate.
c) its costing me nicks.
thank you ricky.
PS: ill post pics once i have it back
Just make sure the bolt is the same material as the manifold these get real hot and will expand quite a bit so expanding and contracting at different rates will crack a manifold in a hurry.
2ofdem you cannot buy cast iron bolts as far as i am aware
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