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tial wastegates

Are the tial 46mm wastegates a bolt on item or is fab work required?
Sorry for the questions, but I have not found the local Maryland area 930 owners to learn from yet. I appreciate all the tips this forum provides.
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Emery

1988 930 coupe - Silver Metallic
stock 3.3L w/GT35R, B&B Headers, RarlyL8 muffler, B&B intercooler, Tial wastegate, Electromotive tecGT based phased sequential EFI & ignition, Wevo shifter
Old 11-05-2008, 04:10 PM
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If using stock headers, you will need to buy the 46mm Tial that is specifically designed for 930's The difference is the cooling vanes are shaved giving them more of a boxed shape to clear the stock headers (the others are more round). Other than that it is bolt on. Just don't get to crazy with the boost springs till you take care of some other stuff (fuel tuning, bigger intercooler etc)
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John A.
1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.)
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Old 11-05-2008, 04:14 PM
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I don't believe thats true. I sell a good amount of the WG's and I rarly sell the 930 version but as cheap insurance for $40 more ($490total) you know it is bolt on
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Old 11-05-2008, 05:27 PM
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+1 This is my understanding as well. My Tial is has the cooling fins shaved on the one side to clear the valve cover. If you have aftermarket exhaust, then it's not a problem.

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Originally Posted by AngM018 View Post
If using stock headers, you will need to buy the 46mm Tial that is specifically designed for 930's The difference is the cooling vanes are shaved giving them more of a boxed shape to clear the stock headers (the others are more round). Other than that it is bolt on. Just don't get to crazy with the boost springs till you take care of some other stuff (fuel tuning, bigger intercooler etc)
Old 11-05-2008, 05:38 PM
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Right....kuz on the other hand, I'm using the SSI headers and the Tial has the rounded fins which clear the headers just fine.....of course I also have RarlyL8's custom Y pipe too. But when using the stock equipment, the shaved fins are definitely something to consider before buying one.

MB11 should know....he builds exhaust systems along with RarlyL8.
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Last edited by Chuck Jones; 11-05-2008 at 09:47 PM..
Old 11-05-2008, 09:45 PM
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Originally Posted by Chuck Jones View Post
Right....kuz on the other hand, I'm using the SSI headers and the Tial has the rounded fins which clear the headers just fine.....of course I also have RarlyL8's custom Y pipe too. But when using the stock equipment, the shaved fins are definitely something to consider before buying one.

MB11 should know....he builds exhaust systems along with RarlyL8.
chuck yours is a standard tial unit and I build the systems for rarly
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Old 11-06-2008, 04:57 AM
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Originally Posted by s5uewf View Post
Sorry for the questions, but I have not found the local Maryland area 930 owners to learn from yet.
Seek and ye shall find!

There are a number of us around.. spread out around the beltway on the MD, DC, & VA sides. Number of very competent shops around as well.

Paul
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Old 11-06-2008, 07:11 AM
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Ben, I bought a Tial WG from you for my '87 930 (OEM heat exchangers) and had to grind off quite a bit of fin for it to clear an ajoining pipe. It must've been the "generic" Tial WG. For 930 guys, I think it's better to sell them the 930-specific unit (they've got lottsa money anyway).
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Old 11-06-2008, 07:13 AM
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I run the regular round Tial, but do have custom SSI headers that give me more than enough room at the WG location.
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1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.)
05 Boxster S: For the Track.
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Old 11-06-2008, 09:18 AM
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I also recently fitted standard tial style wastegate to friends car and had to cut away some material on the fins so wastegate would fit to standard exhaust system,b&b style headers etc standard tial wastegate should be fine i believe.
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Last edited by stup; 11-06-2008 at 09:56 AM..
Old 11-06-2008, 09:51 AM
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I run the "standard" 46mm Tial on mine and it fit perfectly for my B&B headers and my OBX headers. However, I have to remove it to get my lower valve cover off. It's not resting against the cover or anything, there just isn't enough clearence to slip the cover out once it's loose. One of these days, I'll take the grinder to a couple of the upper fins...
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Last edited by sand_man; 11-06-2008 at 10:27 AM..
Old 11-06-2008, 10:21 AM
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Yeah, once you swap to a aftermarket exhaust with the flat side Tial, you can remove the valve cover with out removing the WG.

Quote:
Originally Posted by sand_man View Post
I run the "standard" 46mm Tial on mine and it fit perfectly for my B&B headers and my OBX headers. However, I have to remove it to get my lower valve cover off. It's not resting against the cover or anything, there just isn't enough clearence to slip the cover out once it's loose. One of these days, I'll take the grinder to a couple of the upper fins...
Old 11-06-2008, 01:44 PM
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Quote:
Originally Posted by sand_man View Post
I run the "standard" 46mm Tial on mine and it fit perfectly for my B&B headers and my OBX headers. However, I have to remove it to get my lower valve cover off. It's not resting against the cover or anything, there just isn't enough clearence to slip the cover out once it's loose. One of these days, I'll take the grinder to a couple of the upper fins...
+1
But then, I only take the covers off once a year in the Winter to inspect the valve train and adjust the valve clearance. No biggie.
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Old 11-06-2008, 02:33 PM
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Quote:
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+1
But then, I only take the covers off once a year in the Winter to inspect the valve train and adjust the valve clearance. No biggie.
Yeah, same here.
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Old 11-06-2008, 03:22 PM
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Quote:
Originally Posted by stup View Post
I also recently fitted standard tial style wastegate to friends car and had to cut away some material on the fins so wastegate would fit to standard exhaust system,b&b style headers etc standard tial wastegate should be fine i believe.
Ditto my experience. Just a few minutes on the grinder and she fits fine.
Old 11-06-2008, 04:28 PM
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Quote:
Originally Posted by onboost
Seek and ye shall find!

There are a number of us around.. spread out around the beltway on the MD, DC, & VA sides. Number of very competent shops around as well.

Paul
I was going to suggest you Paul! Also there's some cool 930 owners on the dorkus site I've spoken to.
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Old 11-07-2008, 05:04 AM
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To answer the question if you buy the 930 specific Wg then it is a bolt on regardless.
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Ben

Current project 73 914-6 Gt project rusteration 2.4
Reproduction 914-6 oil tanks, 1-5/8" 914-6 heat exchangers source call 2623647426 or email mbconsulting21 @gmail.com
Old 11-07-2008, 09:24 AM
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I had a set of SSI headers with heat that I had RarlyL8 design a Y pipe for....and the 46mm Tial fit on there with plenty of room as you can see in the picture. This setup has been great, but it doesn't solve the issue for your stock system.


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Old 11-09-2008, 05:36 PM
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