14b Install/Porting Questions..

[always_broken]

I have a 95 TSi and I am buying a 14b turbo this weekend!! Whoo! I've been wanting to upgrade a long time..Well I did some research but just to feel reassured I have some questions.

Mods:
2 1/2" downpipe back
Hard ICP
Greddy type rs recirculated
Turbo Timer
Hard intake pipe
K&N air filter
Fuel pump re-wire



Q.) Can I re-use stock water lines or use 1g stock water lines?

Q.) Can I re-use stock oil return line or 1g return line?

Q.) What sizes should I port the turbo(inlet, wastegate, exhaust) and the stock 2g o2 housing to?

 

[hopwoodp]

I have a 95 TSi and I am buying a 14b turbo this weekend!! Whoo! I've been wanting to upgrade a long time..Well I did some research but just to feel reassured I have some questions.

Mods:
2 1/2" downpipe back
Hard ICP
Greddy type rs recirculated
Turbo Timer
Hard intake pipe
K&N air filter
Fuel pump re-wire



Q.) Can I re-use stock water lines or use 1g stock water lines?

Q.) Can I re-use stock oil return line or 1g return line?

Q.) What sizes should I port the turbo(inlet, wastegate, exhaust) and the stock 2g o2 housing to?

Upgrades look good.
For question#1: I would use the 1g water lines.
#2: RRE says you could use the 2g return line but you will have to adjust the holes by drilling. If your not too confident about doing that then, get the 1g return line.
#3: Port the exhaust manifold to 7cm2 and turbo inlet the same. For the wastegate, you should port it out to match the 2g O2 housing. For the exhaust porting of the turbine housing match it to the 2g O2 housing. If the O2 housing is ported then, port the exhaust side of the turbine housing as well.

 

[Eastwood95]

You can reuse all of the 2G water/coolant lines for the 14b install. I've done it 3 times. You just have to bend them a little to make it work.

Make sure you get new crush washers and gaskets if possible. 7cm is good for porting. Port the crap out of the manifold, o2 housing, turbine.......especially in the wastegate area

 

[kenamond]

Here is a post I made last year with some links to some porting threads. My porting posts were also for a 7cm gasket matched turbo/mani port job, and I also did the O2:

http://www.dsmtuners.com/forums/showpost.php?p=50434034&postcount=5

Fun stuff!

 

[romeen]

When reusing the 2G coolant lines switch the front pipe to the back and vice versa. Be careful when bending them to avoid putting a kink in them.

 

[pooker]

They make a 2g install kit I would say that is your best bet.

 

[always_broken]

Upgrades look good.
For question#1: I would use the 1g water lines.
#2: RRE says you could use the 2g return line but you will have to adjust the holes by drilling. If your not too confident about doing that then, get the 1g return line.
#3: Port the exhaust manifold to 7cm2 and turbo inlet the same. For the wastegate, you should port it out to match the 2g O2 housing. For the exhaust porting of the turbine housing match it to the 2g O2 housing. If the O2 housing is ported then, port the exhaust side of the turbine housing as well.

Nice links kenamond. I'm reading them already.

So since my porting will be 7cm in diameter, I'm assuming I need bigger gaskets. Can I modify my stock ones or is there something else I can improvise? The reason I ask is ### I work 5 days a week and Sat and sun are the only days I can work with. So I'm anxious to do it this weekend. Let me know...

 

[DSMunknown]

Here is a post I made last year with some links to some porting threads. My porting posts were also for a 7cm gasket matched turbo/mani port job, and I also did the O2:

http://www.dsmtuners.com/forums/showpost.php?p=50434034&postcount=5

Fun stuff!

Mack, I was wondering if there were any "porting" books/guides that you would want to recommend (not only ones that show different procedures, but might also give different reasons/explanations for applying certain methods in certain situations).

 

[romeen]

Nice links kenamond. I'm reading them already.

So since my porting will be 7cm in diameter, I'm assuming I need bigger gaskets. Can I modify my stock ones or is there something else I can improvise? The reason I ask is ### I work 5 days a week and Sat and sun are the only days I can work with. So I'm anxious to do it this weekend. Let me know...

You could modify your stock 6cm gasket by grinding out the inner diameter but I would recommend just getting a 7cm gasket. Any DSM shop should have them. If you don't want the stainless steel 7cm gasket that many of them offer you can also get an oem (layered) 7cm gasket from RRE.

FWIW, I believe the diameter of the gasket (turbine inlet) is actually less than 7cm (it may be 58mm). The 7cm2 refers to volume. If I am mistaken someone correct me.

 

[DSMunknown]

FWIW, I believe the diameter of the gasket (turbine inlet) is actually less than 7cm (it may be 58mm). The 7cm2 refers to volume. If I am mistaken someone correct me.

Nope, you're right. HondaStylez did post up something about this recently, but the post was deleted. Ask IslandTSI if he still has the photo he took or if he can re-attach it in the link above.

 

[always_broken]

6cm radius? I confoosed..

 

[romeen]

The 6 vs 7cm2 refers to the volume of the turbine housing. Just use the 7cm2 gasket as a template for porting the turbine inlet. BTW, a 6cm radius would mean a 12cm diameter...one seriously large turbo!

 

[always_broken]

I was thinking twice if I should type radius or not! Are their any OEM gaskets I can buy at an auto store for a guide?

 

[hopwoodp]

I was thinking twice if I should type radius or not! Are their any OEM gaskets I can buy at an auto store for a guide?

Correct me if I'm wrong but, I think the 7cm2 gasket is 2.5" across. I don't think most auto part stores would carry out exhaust gasket.

Oh yeah, below is a link to Road Race Engineering's porting section. Check it out. It will give you some good porting ideas. On my 20g I did the anti-creep port mod where you port in channels that direct some exhaust flow the wastegate flapper. http://www.roadraceengineering.com/eclipsetech/porting/

 

[always_broken]

So I can re-use my stock turbo to manifold gasket if I port to 7cm?

 

[hopwoodp]

So I can re-use my stock turbo to manifold gasket if I port to 7cm?

No, I wouldn't suggest it. If you are really in a hurry just use some high temp rtv and let it set for a day. But, If I were you, I would get a new gasket for that. Its only $20 and its better than putting some rtv on there. I have heard from several different people that some pro's don't use gaskets as long as both of the mating surfaces are flawless. But, that isn't really the case for most of us. Buy a new gasket.

 

[Dream On]

Use Copper RTV for the turbo to manifold gasket. Granted, this won't help you to port it to the correct size, but it solves the gasket problem.

 

[DSMunknown]

So I can re-use my stock turbo to manifold gasket if I port to 7cm?

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[always_broken]

I'm just re-assuring. You ever been so anxious to do somethin that you'll try everything to cut the corners? If not this is an example.

 

[romeen]

Use Copper RTV for the turbo to manifold gasket. Granted, this won't help you to port it to the correct size, but it solves the gasket problem.

Are you sure it will hold up to the heat? I know the copper has the highest heat rating of the RTV's but I don't think it's range is great enough to withstand the manifold-turbo heat for an extended time. But I have never tried it so I can't say for sure.

For anyone who's interested, the diameter of the turbine inlet with the 7cm2 housing is 6cm or 2.36".

 

[always_broken]

Are you sure it will hold up to the heat? I know the copper has the highest heat rating of the RTV's but I don't think it's range is great enough to withstand the manifold-turbo heat for an extended time. But I have never tried it so I can't say for sure.

For anyone who's interested, the diameter of the turbine inlet with the 7cm2 housing is 6cm or 2.36".

2.36" huh? Horizontal and vertical? I guess I'll wait till' next weekend to install and order my gasket now. Until then I'll just port away.

 

[DSMunknown]

2.36" huh? Horizontal and vertical?

I hope you're joking.

 

[always_broken]

I hope you're joking.

Since a circle has no sides than yes, I am. Just not a funny joke.

 

[Dream On]

Are you sure it will hold up to the heat? I know the copper has the highest heat rating of the RTV's but I don't think it's range is great enough to withstand the manifold-turbo heat for an extended time. But I have never tried it so I can't say for sure.

For anyone who's interested, the diameter of the turbine inlet with the 7cm2 housing is 6cm or 2.36".

Yep, it holds up just fine. I've got it on my car and so do many others.

 

[romeen]

Yep, it holds up just fine. I've got it on my car and so do many others.

Thanks Adam. That's good to know. I've always liked the copper, now I like it even more.