04-04-2012, 11:09 AM
1. Cast Iron
2. Yes - but it's not quite like welding normal steel - it also has a tendancy to crack as it cools, any "pro" welder will tell you you need to keep a blowtorch on it as it cools... But tbh, it's fine...
3. Easiest way IMO is to get some *fairly* thick plate, sorta 6mm or so, make the holes required for the exhaust manifold, but then countersink them, so the boltheads actually sit in the countersink, if they're still a bit high, you can always just take a grinder to the bolt heads to make them flush with the surface, then you can either tap threads into the plate for the turbo to bolt to, or then put a bolt all the way through and nut it on the other side, but you might find you can only do that on one of them as the mating face is in the way, so you might just need to tap a thread and then cut down a bolt so it doesn't foul when you bolt it down... This means there's no welding involved, at least on the mani>turbo side.
If you catch me on that? I'm on whatsapp/phone all day, so give me a shout if you need owt.
2. Yes - but it's not quite like welding normal steel - it also has a tendancy to crack as it cools, any "pro" welder will tell you you need to keep a blowtorch on it as it cools... But tbh, it's fine...
3. Easiest way IMO is to get some *fairly* thick plate, sorta 6mm or so, make the holes required for the exhaust manifold, but then countersink them, so the boltheads actually sit in the countersink, if they're still a bit high, you can always just take a grinder to the bolt heads to make them flush with the surface, then you can either tap threads into the plate for the turbo to bolt to, or then put a bolt all the way through and nut it on the other side, but you might find you can only do that on one of them as the mating face is in the way, so you might just need to tap a thread and then cut down a bolt so it doesn't foul when you bolt it down... This means there's no welding involved, at least on the mani>turbo side.
If you catch me on that? I'm on whatsapp/phone all day, so give me a shout if you need owt.
