Umm, yeah. What's the difference? What does it all mean? I'm going to be buying a wastegate soon, and I guess Dual port is better, but I have no idea what it is. I figure it can't hurt to know this stuff before I go plopping down a few hundred dollars.

 

Correct me if i'm wrong but IMO the dual port wastegate is made to use a boost controller (connected to the second port, so it can create a "leak down" to change the boost level)

 

a dual port is better used with an electronic boost controller,a single with a manual boost controller.the dual port is supposed to hold rock solid better than a single port.

 

You know, a single port wastegate is honestly better suited to the garbage can. You can't even buy a real wastegate with one port.

 

So another words you are saying to buy a dualport instead of the Tial 35mm. Is lindsey the only one that sells the dualport.

 

Dan:

He's saying the only one that sells a single port is the dealer (although Lindsey sells a rebuild factory unit for stock classes). ALL TiAL's are dual port. The single port bleeds more boost earlier, particularly if the spring is weak, due to it's construction.

 

Correct me if I'm wrong...........

I always understood the Tial to be a dual port.

 

Tial is dual port.

Sam

 

Yes, all real wastegates are dual port. Our cars came with clowngates and some guys think this was to keep them slower than the 930.

 

So, just to know : are the 930 equipped with dual port wastegate stock ?

 

Wasn't the '89 951 the fastest Porsche of that year's stable?

 

From what i hear the 944 Turbo was 4th fastest production car in its time and the 911 Turbo was 3rd but not by much. Porsche isnt gonna make there flagship car slower than any of there other cars. i heard years ago that the 944 Turbo actually outperformed the 911 Turbo but then Porsche detuned the cars so they wouldnt. I have no idea if that is true but i can see how it could be.

 

I own a lindsey dual port myself and am very happy with it. It's 46mm and I swear looks huge under the car. I never have a problem holding boost that's for sure. I don't know how much hp these are good up to ...but, a 951 race car that go's to my local DE's run's it and he is said to be in the 500+ crank hp range.

 

As I recall, the factory quoted the '89 911 Turbo as being marginally faster (a few tenths of a second in 0-60 and 1/4 mile) than the '89 951. The 928 of that time was also very close to the 951. On the road, it would really come down to the driver. The 911 Turbo made a bit more power (about 285 vs 247 flywheel hp for the 951), but we all know how easy it is to make more power in the 951's.

 

Actually the 88 951S or 89 951 were considered by Porsche to be the fastest production car to date at that time. It had the same 0-60 as the 930 but a higher top speed. The 928 S4 had a higher top speed but was slower 0-60.

I have an article that PCA released back it the day somewhere on the introduction and first impressions of the 88 951S. I will have to see if I can find it, it is very complimentary of the 951.