turbine housing trouble

[dsmsucks]

Well today I was over a friends house and happen to look on the floor and discovered a ported turbine housing It orginally came with his small 16g that he brought off some guy from ebay. Anyways I have a small problem, 1 of the 4 holes are bigger than the rest. I cant screw in a turbo bolt Is there anyway to fix this????? Also how can I tell if the housing is from a 2g car
Thanks

 

[Xit40]

You could always just retap the hole simplist solution really. That's what i do when I mess up threads or just holes in general. A tap and die set cost me about $25 at Sears and I got all of the useful metric sizes. Oh by the way where you at in Rochester I'm not that far away from there bout 50 mins maybe. And the housing is a TD05H it can go on any Mitsubishi car. They come on 14B's and 16G's (and numerous other turbos, but that's what most ppl around here care about) so it'll fit on ur car once you retap it.

 

[dsmsucks]

Thanks for the reply Im located in the heart of the city(down town area)

The hole in general is way bigger than the other 3 holes, like someone was using a bigger bolt I really dont understand this
Thanks

 

[Burnett03]

someone probably broke a bolt off inside of it, then drilled it out.. I suggest a helicoil to solve this. it will get it back to the original size.

 

[dsmsucks]

Thanks man

Helicoil??? Can I pick this up from a local hard wear store? Also, is using the helicoil hard?
Thanks

 

[CyberEye]

Thanks man

Helicoil??? Can I pick this up from a local hard wear store? Also, is using the helicoil hard?
Thanks

Why not save the trouble of re-tapping/helicoiling it and just bring the housing to homedepot or somewhere and get a bolt that fits.

 

[dsmsucks]

Well today I went looking for the helicoil and was disappointed. I was told that I would have to go to a machine shop and them custom make a helicoil for me.
If all fails I will have no choice but to go and port the turbine housing I had on the car.
Any thoughts about the machine shop
Thanks

 

[Burnett03]

Why not save the trouble of re-tapping/helicoiling it and just bring the housing to homedepot or somewhere and get a bolt that fits.

because the hole is bigger... Which means that a bigger bolt wont fit through the manifold to connect to the turbine housing

 

[sweet97]

Seems like a lot of work for minimal gain. Wouldn't a stock diameter bolt a 1/2" longer and a washer/lock washer and nut be enough?

 

[CyberEye]

because the hole is bigger... Which means that a bigger bolt wont fit through the manifold to connect to the turbine housing

So then drill and tap the manifold. Taking material away from the manifold will be alot easier then adding material to the housing.

 

[sweet97]

The manifolds are only drilled, not tapped. It is not likely that the turbine housing that has had the hole drilled out is still centered correctly so tapping it would likely do no good. I still believe a longer bolt and washer, lock washer and nut would be the most viable option. I would try to avoud drilling the manifold unless as a last resort as that would only weaken it. Mark

 

[ken inn]

first off, if you use a home depot bolt in there, it probably wont last. those bolts are very hi carbon, they gotta take a lot of heat, which will break a lot of regular bolts/washers. see if you can find a shop that uses timeserts. they are like a helicoil, but i think they come in larger outer sizes. lastly, use a LOT of neversieze. nickel based, and a LOT.

 

[Burnett03]

So then drill and tap the manifold. Taking material away from the manifold will be alot easier then adding material to the housing.

You think so? Its cast iron and then you are screwing the situation up even worse.. Why dirll into a manifold if you dont need to?

 

[sweet97]

The "Home Depot" bolt will not be threaded into anything like the turbine housng where it could easily break upon removal. Worst case the nut and bolt break where they are together and then simply replace them with Home depot again, no problem.

 

[Burnett03]

The "Home Depot" bolt will not be threaded into anything like the turbine housng where it could easily break upon removal. Worst case the nut and bolt break where they are together and then simply replace them with Home depot again, no problem.

The turbo bolts need to hold a lot of weight/heat. I wouldnt suggest a "homedepot" bolt unless it was grade 8 at the least.

 

[dsmsucks]

Seems like a lot of work for minimal gain. Wouldn't a stock diameter bolt a 1/2" longer and a washer/lock washer and nut be enough?

Wow so porting a 2g manifold and turbine housing to 7cm, then porting the o2 housing is all for a minimal gain I thougth with all the mods I have plus the porting I could at lease see 260whp at 16psi

Damn If I knew this I would have left everything on the way it was
Thanks

 

[sweet97]

Now I know what "taken out of context" means. Considering the amount of work involved in just adding a ported turbine housing with a faulty hole I said the gain was hardly worth it. Might as well port the ridge from his own 14b turbine.
I went for the EVO III turbo, exhaust and 02 ported and the money would have been better put to use saved for the header I now run. In the case of this thread the longer bolt and washer, lock and nut is the most economical thing to do for the return. IMHO. Mark
PS: Did you reach 260HP? I had heard there might be an AWD Dyno in Rochester. I cetainly don't knock anyone doing what they can afford to improve on their ride either. I never consiered this a competition but rather a group of guys with a similar interest trying to help each other out! PEACE!

 

[CyberEye]

You think so? Its cast iron and then you are screwing the situation up even worse.. Why dirll into a manifold if you dont need to?

if you can't drill through cast iron, you don't have the right tools

 

[dsmsucks]

Okay I got it

Instead of going to a machine shop, how about this

I drill the hole on the housing a little deeper. Then I retap the damn thing and find a bolt alittle longer and can withstand heat.
Then I call it a day

 

[LessIsMore]

The 7cm housing is a worth while upgrade. Also you can save some money and buy a turbo without a turbine housing if you plan on upgrading down the line. For example FP sells an 18g w/o turbine housing for ~200$ less than an 18g with turbine housing.

Why can't you use a helicoil?

If the hole is too large to be tapped for a helicoil there are other thread replacement kits which allow for oversized holes.

 

[dsmsucks]

Now I know what "taken out of context" means. Considering the amount of work involved in just adding a ported turbine housing with a faulty hole I said the gain was hardly worth it. Might as well port the ridge from his own 14b turbine.
I went for the EVO III turbo, exhaust and 02 ported and the money would have been better put to use saved for the header I now run. In the case of this thread the longer bolt and washer, lock and nut is the most economical thing to do for the return. IMHO. Mark
PS: Did you reach 260HP? I had heard there might be an AWD Dyno in Rochester. I cetainly don't knock anyone doing what they can afford to improve on their ride either. I never consiered this a competition but rather a group of guys with a similar interest trying to help each other out! PEACE!

No I dont think I hit 260whp yet, even with all the stage 1 mods plus ported 14b. The only real way is to hit the dyno up
PS: I should be able to use the awd dyno right?

 

[sweet97]

Then it's true there is an AWD dyno in Rochecter? I am close and that would be great. Not sure how they would calculte a FDW on an AWD but they probably have a formula. I'm a dyno rookie so you are asking the wrong guy!! mark

 

[Burnett03]

if you can't drill through cast iron, you don't have the right tools

I have a garage full of tools so i can do it. But some people dont even have a drill so i dont think they will get far. + It's a dumb idea to drill ONE hole in the manifold bigger when you can fix it the right way.