Porsche-O-Phile

Everyone on here seems to love the Tial wastegate because they're superior to the stock one in terms of ability to hold boost at the higher RPM ranges and being far less suceptable to boost bleed-off. I'm seriously looking at one for my 951 project but have a few concerns including durability and installation. The installation seems to be a royal pain in the butt, but I've gotten a spare w/g tube which I intend to have cut down and re-welded prior to installation to make it easier. That should help immensely with that aspect. I'll be running an Apec EBC and really would like a dual-port unit.

With regards to the longevity of these things - how well do they hold up? Most people (even those up in the 400-ish RWHP range - where I want to go) seem okay with 38mm setups although the construction of the 46mm unit looks WAY better. Any thoughts, opinions, horror stories, endorsements or advice? Thanks.

Mighty Shilling

Mine has almost 1500 miles on it, and going strong!

pk951

Four years still going strong no problems.

Mike1982

2 years as a DD, now a weekend car going strong. Let's face it though, 2,3,4 years old is brand new compared to 20+ years old.

Mighty Shilling

and it makes a bad *** sound when it opens...

PSSSHT SHT SH SH SH sh

ibkevin

It's been covered that the 46mm is overkill on a 2.5l.

I have yet to hear of someone replacing a ruptured Tial diaphram.

I made the mistake of not getting a 1bar spring!

If you have a late Xover, the install is not as bad as you read. BTDT, I have since read that the stock WG support bracket works well with the Tial. Mine went in the steel bin.

I highly recommned safety wiring your fasteners.

Mighty Shilling

Mine will be safety wired in the near future... just need a cobalt drill bit, and a jig to hold the allen bolts as I use the press...

theedge

On my late crossover the install was painless AFTER I chopped 1/2" off the end of the dump pipe. Went it like it was supposed to be there, and hangs off the stock bracket just fine with a hole drilled in the bracket. Dont know how thatll work with a 1 pc crossover but keep it in mind if it doesnt seem to be fitting.

Mikeaagesen

I just kept my exhaust loose as it was hung and until everything is in place. then move around and slowly tighten things up. I didn't have to cut anything. Mine was a later x-over pipe too.

MPD47

Over 5000 miles on mine without an issue.

RT930turbo

About 10,000 miles on mine, no issues whatsoever

Red1

Over two years on mine and it's fine. Much better than stock.

Porschefile

Jeff, check Tial's Website and read the descriptions of some of their wastegates. There is really no need to be woried about longevity with these, and technically they should last longer than the stock wastegate ever could. They are built with superior materials, heat and corrosion resistant coatings, cnc machined pieces to maintain tighter clearances, etc. All of the components in their wastegates are built with metals and coatings that resist corrosion and rusting as much as possible. This includes 347 ss for the valves, stainless valve springs and seats, anodized aluminum for the actuator housing, and they even give you the option of a different more corrosion resistant valve stem coating for use with leaded fuels. All in all, it's some very nice stuff! That being said, using adapter flanges with the 38mm WG's can be a pretty tight fit, which could cause additional stress on some of the nearby exhaust pieces. Generally it seems that most 951 guys don't have a problem with it, but this tight fit could result in cracking of some of the nearby exhaust components. That's the only thing I'd be concerned about. Personally, I'd rather buy some Tial 38 flanges and have them welded on to the exhaust so that it fits right in the first place.

mwc951

Mine after a flood. The innards were spotless.

David Floyd

25k miles on a 35mm HP Tial still perfect