Non mirrage T2 set up.
Turbo Mini Forums

Couldnt find much using the search, so sorry for having to ask this. Those of you that are using a T2 on the standard metro manifold, What are you using for the exhaust elbow? All help, views, and pics very appreciated!
Thanks
Shane.

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=9330

T2 one side,T3 elbow otherside

Metro turbo weekend driver,Mini turbo in the making again!

So I use that plate to bolt to the T2, and then cut the elbow from the T3 and weld it on, is this correct?
Any one any pics? (please)
Shane.

No,l at least that's not what we did. Try this thread, looks the same as the other thread at the start, but it isn't

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=8585

Edited by wil_h on 24th Dec, 2006.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

Thanks for that, did you get any made up in the end? Do mirage sell the elbow and down pipe seperatly, if so how much?
Shane.

think the elbow is a home made joby mate, thats what im going to do anyway!

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985

I use the T2 elbow, cut, rotated and re-welded.

WWW.TURBO-MINI.COM

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

that will be an interesting conversation over the wil/ben christmas dinner table

mirage may do you a down pipe seperately, but i dont know if i it will fit correctly as the turbos may sit at different heights, you could just get an outlet pipe from him maybe

it'd be worth ringing him, if it was me i wouldnt break a kit, but if you time it right, it may be around a time that he has some more made and one more could be done

Thanks for that guys, was hoping for an easy option tho, lol. Think i will go down the cut and weld option, Unless anyone advises strongly against it? As the elbow is cast is the only welding option tig, or can I use mig?
Thanks
Shane.

You can use a mig. Mine's been fitted for some 3+ years without a problem. {touch wood}

WWW.TURBO-MINI.COM

my cast manifold is migged too, but to get decent penetration it had to be pre-heated or the weld didnt take well atall, but itll be obvious when you come to do it yourself.

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

If your going to mig is get it good and hot and try to weld to one edge of each piece then weld teh welds together.

This is because cast iron will give brittle fractures as it cools but weld to weld won't and neither shouls casting to weld if you let it cool completely between welds then reheat. Take your time and you can get good results. Oh, almost forgot to say how important it is to have a V shapped joint by chamfering both edges (standard practice on thick sections I know but REALY import in this case).

Every day is a school day ...........

How fast and how expensive ...... the same question...

when you say heat it,... like in an oven (lol) or warm it with oxy acetylene?
If I opt for tig, does the heating need to be done. Mig isnt a problem for me, but dont have access to a tig set.

MIG or TIG needs heating the same, it's not the welding method (although the less local heat of gas welding makes it slightly less important) it is the relative properties of the different materials that makes the heating necessary. The cast iron won't spread the heat from the weld at the same rate as the weld pool and it will cool at a different rate also which leads to the cracking, alogn with a couple of other properties of cast iron fighting you on this one.

Oxy isn't required but if it is possible to use and oven then bringing the casting (not just oven air temp) upto around 60 degC will help loads. If your other half isanything like mine she won't ind the use of the oven just the welder in the kitchen. That being the case a propane torch will do the job just as well. Make sure you get the whole casting upto temp not just around the area to be welded.

On something like this I would warm the two parts up then put a bead of weld along each one then up them in to warm again. Once they were up to temp again I'd weld the two and put them back in to warm, turn of the heat and let them cool back to room temp slowly in the oven. Always worked for me bu tI am sure like most things to do with welding there will be as many opinions as there are welders...

Every day is a school day ...........

How fast and how expensive ...... the same question...

If your other half is anything like mine she won't ind the use of the oven just the welder in the kitchen.

LOL!!! Ive got a pic some where of an engine I built on my kitchen floor, so Using the oven isnt a prob, just the mig set is in my works workshop, and the oven is obviously at home, might have to bundle the mig set in the back of the van and bring it home.
Can it be "root and capped" with oxy?
Thanks
Shane.

shaney, to be honest I am not a gas welder and have very little experience of using it on anything other than thin section steel so I can't answer that one. Somebody on here will.

Soemthing else I fogto to mention is that you can use some off cuts of steel rod (even threaded bar works ok) ans a couple of slots in the castings to align the joint before you start. Weld the stud to one side, cool, heat again and weld other side to the stud. Works like tack welding.

I must admit that for cast iron I like nickle rods in an arc but that takes some serious practice and it took me a looooonnnngggg time cutting and welding old knackered engine blocks to get the knack for that, even now I work on soem scrap for an hour or so to make sure I am up to speed before I tackle anything with value if I am using nickle and arc.

Every day is a school day ...........

How fast and how expensive ...... the same question...

Thanks for all that Roger, appreciate it, wouldnt of thought one little part would cause so much hassleLOL, buts the way it usually goes!
Shane.