firstfirebird

iTrader: (3)

Wasn't happy with the last setup welding a bung to the pan and am using bulhead fitting this time. It would be really convinient to run seperate returns for each turbo where they are placed near the front of the valve covers.

Are you guys with twins running a return on each side? Pros/cons for each?


Thanks,
-john

project89

iTrader: (1)

i ran a seperate -10 drain for each turbo, lol i planed ahead and welded a bung in each sid eof my oil pan before i put the motor in the car.

worse comes to worse u could prolly run them down to a y and then use a single line back to the pan but u would have to increase the size were they come together

327???

I'd run two lines, I'd have a heard time trusting a bulkhead fitting. I silver soldered the nipple onto my 280z's oil pan.

firstfirebird

iTrader: (3)

Now silver solder I could trust. I used to do HVAC and am very fimiliar with the process, and have fixed our shop compressor countless times using phosphorus as well - but I thought the silver solder was for copper alloys only (punched steel pan) ?

The reason I'm planning on using bulheads is because the last turbo kit always had a small leak with a MIG weld on the pan/10an bung, and never trusted it since to carry oil (although 83crossfire t/a gave a good idea of rubbing flux/solder while the joint was still hot). Many many racers use bulkhead fittings on fuel cells with no problems, why would it be a problem carrying oil?

The only reason I started this thread is because a friend said I'm wasting time/materials using two return fittings and I want to cliam my argument of convenience (and just making sense).


Thanks for all the replies so far, kepp 'em comming

jonarotz

iTrader: (26)

I also ran two seperate -10AN to either side of the pan. I wasn't as smart as project89 and I had to remove my pan to have them welded. I would put more trust into a welded fitting rather than a bulkhead.

project89

iTrader: (1)

ff if possible tig weld the fittings instead of mig, it makes for a much niver job and u wont have to worry about porosity liek u had problems with the mig last time

firstfirebird

iTrader: (3)

What's the argument for bulkheads? The 10 an fittings I get have a nut (or double if preferred) on the inside.

Sure it would be ideal to weld, but as I said before I have a MIG only and it would kill me to outsource something for my own car (ie have a welder do it). We had a class A welder next door here at the shop, but he moved out last month, or I wouldn't be asking

project89

iTrader: (1)

i just wouldn't trust it u sure about the bulkhead fittings on fuel cells that dangerous. ever fuel cell i have ever seen has fittings on it not bulkhead fittings threw it.

on that plumouth we built it has an external oil pump, we used bulkhead fittings on it,brand new mildon oil pan etc and they did leak not much but they do drip

to do a bulkhead fitting ur gonan have to have the pan off the motor anyway, with the pan on the bench u should have no problem even mig welding them as ull be bale to fill the pan with water and check for leaks anyway.

another option is to brase the fittings on

327???

I used a brass fitting and a steel pan, I used a dissimilar metal flux. It turned out very nice.

junkcltr

iTrader: (1)

firstfirebird,
Is the pan off the vehicle for welding the fittings on? If so:

1) You are better at welding now than when you first started
2) You have a real DCEN (Craftsman) flux-core machine now that welds better than the AC flux-core Harbor Freight machine than you had before.
3) You can get -10AN steel weld bungs from speedwaymotors.com or summitracing.com of racepartsolution.com for under $10 each
4) I run two return bungs for my twin setups, but I don't think you would have a problem with a Y right at the pan with a couple of T3 with oil restrictors in the feed inlets.

5) If you MIG it (which I always do), you can check the weld afterwards. Place a piece of masking tape on the inside of the pan blocking the oil return hole. Fill the other side where the oil comes in with liquid and see if the weld leaks.

I use weld-on fittings because they are much cheaper than bulkheads. You also don't need a wrench to hold the fitting when tightening the return line to the pan. I use MIG/Flux-core most of the time because it is faster than TIG. If you clean/grind the area to weld I think you will be fine.

EDIT: Get some Lincoln NP-211 flux-core wire if you use the wire feed to weld it. It can do multi-pass. Don't use GS grade flux-core wire. Check out weldingsuppy.com or other web stores. Some ebay people also sell it.