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Post by beatrod on Apr 27, 2019 16:37:35 GMT -5
So my t3 needs a rebuild and has not been messed with since 84 when it was made, so I'm guessing anyway. 5 bolt flang bolts all already twisted in half, il assume due to age and my slight fear of getting the housing to hot and causing something to warp. Either way, all the other bolts look just as harsh on the hot side of things and although I would like to rebuild it, im not sure things won't go down hill and would like to know if anyone knows what the closest matched turbo to the performance of the t3 would be. I like the kick they have and beings as I'm mainly stock (knock off tubular header, factory head and accompanying parts as far as I know, fmic, fpr, la3 with 35# injectors and no ACT hooked up. I have an 86 motor/intake that's going in eventually, there's just a few things I'd like to get under control before hand) I'll be below 300 I'm pretty sure, so I'd like to keep the decent spool time and kick that the t3 has. Any help would be greatly appreciated!!! Thanks in advance.
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Post by beatrod on Apr 27, 2019 16:57:31 GMT -5
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Post by Stinger on Apr 28, 2019 14:15:06 GMT -5
So you say it needs a rebuild but then said you're guessing it needs one? What symptoms/problems indicates it needs a rebuild?
The 5 bolt flange bolts don't have to come out for a rebuild so it's unfortunate that the housing is now an expensive problem since it will cost a couple hundred to get a machine shop to get those bolts out, or to replace the housing.
I need the "what's wrong with the turbo" answered before I can provide more detailed advice.
I'm not going to comment on the prospects of a $100 brand new turbo being anything other than junk.
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Post by beatrod on Apr 30, 2019 5:14:21 GMT -5
I was meaning it definitely needs a rebuild but I'm only guessing the bolts where in there since new. Unimportant really. It needs a rebuild because there is shaft play. Also the compressor wheel is eroded a bit. I was unaware it needed a rebuild when I started. I was taking the elbow off to have my brother weld the 3" tube to it(he's a tig welder in aerospace field) I knew that turbo was junk, anything under 3-400 is likely junk although it would be very temporary. I'll just wait tho. Which brings me to my most important question, I know the t3's are hard to beat at lower/near factory power, but would I be better to have my turbo sent out and redone or to buy a decent one and be done with it? And if you would suggest one what would it be for around 300hp and good spool time? I have a 1984 svo motor. Its all factory as far as i can tell when it comes to the internals. I got an xs power header and a bare head with the motor tho so the one on it could be a newer one. Haven't pulled it off. I have an adjustable fpr, fmic, la3 with 35# injectors, a 3" down pipe, otherwise its all stock. I do have an 86 motor thats been rebuilt so I'll have the square style intake, but I'd like to build funds a bit and do some head work and intake work before I put that in. So I'll worry about a matched turbo when that time comes. Advice on turbo selection would be great. mine has shaft play and the compressor isn't in the best of shape, but the housing don't look to have been rubbed or hurt in any way. I can get pictures if that would help. I'm also on a bit of a budget, thats why I'm not just building the other motor for now.
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Post by Stinger on Apr 30, 2019 15:39:05 GMT -5
They all have shaft play until oil pressure gets in the bearings (bushings actually). If the wheel doesn't touch the housing with VERY light pressure and you can't move the shaft in/out, only side to side, then it's not excessive.
Normally I'd point you towards a new T3 cartridge (it's everything but the two housings...new shaft, bearings, center housing, wheels, etc.) that are a couple hundred dollars but you now need an exhaust housing as well (unless you have yours drilled out, or you weld the elbow to the now "junk" housing.
A rebuild of what you've got is $350+ and you'd still need a new housing (or weld it).
So the best option depends on what you want to do about the exhaust housing.
It's hard to beat a T3 for a stock head/cam/pump gas setup.
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Post by beatrod on Apr 30, 2019 15:56:57 GMT -5
I knew they were bushings but figured they were a little tighter then they are. Thats great news!! Thank you, you just saved me a good amount of money as the shaft doesn't move in and out at all and doesn't touch either housing. As for the turbine housing, I know someone with a machine shop and I will probably have them drill and tap the housing and bore out the elbow holes if need be. Or just weld it on beings as I plan to upgrade in a few months anyway. Thank you stinger!!
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Post by beatrod on Apr 30, 2019 21:05:01 GMT -5
By the way stinger, I was wondering where I might get a new turbine housing for my turbo if its cheap enough or things don't go as planned when I have it drilled and tapped. I looked online and couldn't find any that looked the same. I plan to take the housing off the center section to have it drilled/tapped beings as I have to rotate it for the header anyway. I have all six bolts loose after some heat although iv not tried to take it off yet because reading another post I knew it would take lots of heat and some time. However if its cheap enough I'll just get a new one so I know its how it should be.
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Post by Stinger on Apr 30, 2019 23:03:12 GMT -5
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Post by beatrod on May 1, 2019 6:09:03 GMT -5
Thank you sir!
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