black944 turbo

I just got the deal of the century on a tial wastegate ( I think 46mm) and custom down pipe and wastegate tie in. I have a few questions about the setup.

1. My car is primarily stock (vitesse chip, lindsey exhaust, and 3bar fpr). Currently I am running a stock shimmed waste gate. Will this unit be worth the effort and expense to install in my car?

2.Would you attempt to use the portion of exhaust that came with the gate or get my exhaust modified to fit. It apears the down pipe section graduates from 2.5 to 3" and is stainless vs. my mild steel unit.

3. Will I see any gains with this unit?

4. Can I get the two nipples for the gate?

5. Will my reliaboost work in dual port?

6. Final, how can I tell what spring I have in here.


7. How much do you think this setup is worth?
I am not planning on selling it, just curious of how good a deal I got.



Thanks a ton.

User 52121

Looks like it's the 46: http://www.tialsport.com/prod_wg_46.htm

In theory, you'll get more accurate boost control, as it's larger and can vent more quickly. I would think that it would keep boost spikes down a bit. According to the website, it ships with 2 nipples so I imagine you could hook it up in dual-port. As for the downpipe - it's kinda hokey looking, but also looks to have smoother mandrel bends and is round (vs. the flattened stocker.) I'd say "use it", provided you have a welder and can connect the little stub they left you at the end to the rest of your exhaust.

black944 turbo

Thanks, so you don't think it will be a huge overkill for my application?

carlege

If anything it will leave more room for future upgrades. Looks well done

blown 944

Larger wg will allow for lower crossover pressure with a small turbine housing.

Dual port allows for more low end tq compared to just single port spring pressure.

The springs are color coded and the specs are available on the web.

The 3" will help slightly in some areas.


Like mentioned, good for future upgrades.

No idea on value

black944 turbo

Cool it sounds like it should make for a good setup.

As for the piping, would you guys reccomend using my current lindsey racing 3" and modifying the dump tube or building something off this unit as it is stainless?

zerMATT951

I don't see a down pipe in the photos... are you referring to the 3-hole flange at the top of the exhaust pipe? That connects to the down pipe, it's not a replacement for the down pipe.

black944 turbo

Yes, sorry I know its not the true down pipe. I meant the section with the wastegate tie in attached.

zerMATT951

If you've already got a LR 3", I would see if the Tail would bolt in where your stock waste gate is bolted in unless the tie-in is a different diameter. I'm not sure that I'd hack up any portion of the LR 3" pipe to use the stainless stuff with cuts and welds... the LR pipe is mandrel bent and if coated, will last just about as long as stainless with exposed welds.

black944 turbo

Got yeah, I know the tie won't work (this is the stock unit), however I am unsure about the crossover section as the car isn't here.

Thanks for the advise and if anyone else has any thoughts please pass them along.

black944 turbo

Does anyone have any pictures of a tial 46mm installed on a 951? I did a search and could not find any pics.

TurboTommy

To know what spring you have, you can just use a hand pressure pump with a gauge, bench test it, and you'll see at what pressure the wastegate cracks open. That will be your spring rating.
Depending on engine/turbo configuration your max boost will be a bit more than this because the wastegate has to open more than just "cracking open" to regulate boost in actuality.





Sid, I'm not sure about this.
I think the crossover pressure is determined by over-all exhaust efficiency including turbo hot-side.
Larger wastegate just has to open less to keep that crossover pressure.

black944 turbo

Thanks Tommy, I found that I had two red springs right at 1 bar, so I lowered to the large red spring .7bar I believe as I only plan to run 15psi. Any other thoughts or suggestions are welcome.


I am still on the fence as to doing a full exhaust based off what I have here and selling my lindsey or keeping the lindsey and simply modifying the dump tube.

eniac

Looks like you have an '86 so with the one piece x-over it will most likely have to be cut and modified anyway even with adapters so I would get rid of the flex pipe in the WG dump and use whatever other pipes are better than what you currently have, or just have a complete new exhaust built with the WG mounted in.

black944 turbo

Thanks eniac, you are correct my car is an '86. It is however equiped with an early 2piece crossover so this should be a direct bolt on to the crossover and require modification to the dump tube only.