Larry Weinstein

What would be a fair price for a brand new Porsche wastegate for a 944 turbo S? I understand the dealer price is over $2000. Is it worth buying NOS or is the Lindsey unit a suitable substitute?
Thanks. <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />

Flight_951

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Larry Weinstein:
<strong>What would be a fair price for a brand new Porsche wastegate for a 944 turbo S? I understand the dealer price is over $2000. Is it worth buying NOS or is the Lindsey unit a suitable substitute?
Thanks. <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">A fair price would be about $300. I've seen two brand new Porsche wastegates sell for about that on eBay over the past year. When I bought my Tial a couple years ago, the Lindsey unit (they have two now) was dual-port, unlike the stock single-port wastegate. Unless you buy NOS you'll be looking for a dual-port which will require boost control. The wastegates on the market today are much better than the old stock ones on these cars from the 1980's.

TurboTim

Larry,

We have a set-up ready to go for $368.It includes a 38mm Tial dual-port wastegate, adaptors and hardware. No core charge required. This is over $30 cheaper then anything else offered on the market and you get to keep your core and re-sell it to recoup even more money.

EZRider

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica"><strong>Is it worth buying NOS or is the Lindsey unit a suitable substitute?</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">NOS is not the way to go with a new wastegate. Go after-market. The Tial brand is a good example sold by quality vendors.

MySwiss

Hi Larry.If you do a quick search on the list,you will find that the Tial 35mm or now the 38mm unit works very well as a replacement. I can supply you a new Tial 38mm wastegate with the adapter plates and all the hardware needed to hook it up,for 350$ usd including the shipping.

Rick_951

I got one tial 35mm with the adapter and i throw you a manual boost controller, It was in the car for less than a 2 weeks. Very cheap email me privately. I am going to place it on ebay so let me know before.

glen2002

Tim,
When would one use the 46mm Tial instead of the 38mm tial you sell? There seems to be a big price difference.
Thanks

Glen

Dan87951

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by glen2002:
<strong>Tim,
When would one use the 46mm Tial instead of the 38mm tial you sell? There seems to be a big price difference.
Thanks

Glen</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">When making more than 400HP.

fast951

Which one of the following requires a larger wastegate?

a) Small fast spooling turbo (Less HP)
b) Large slower spooling turbo (More HP)

????

Larry Weinstein

My understanding is that the Tiel unit would not be legal for stock class in PCA...the reason I was considering the Lindsey "Clubgate" wastegate.

m42racer

Neither. Its about air volume not boost. The W/G will only open under pressure. So whatever the size of the W/G, it will open at the same pressure.

It is about releasing air volume (flow)thro a bigger hole(valve) to lower the efficency of the Compressor. This then lowers the air mass. The boost pressure is a function of that efficency.

Now what you should be thinking about is not the size but the time v flow numbers. Open the W/G for less time but have the same flow rate. This then lowers the off on throttle response time (lag). Remember it takes longer to operate a bigger W/G valve than a smaller one.

fast951

A bigger turbo requires plenty of air to get it spooling. A minor reduction in the exhaust volume will be enough to stop the turbo from generating boost. Therefore there is no need for the big WG.

The smaller turbo requires less air to spoolup, so you must reduce the exhaust a large amount to cause the turbo to quit spooling so you need a WG that can dumps more volume.

Now there is the WG response time which is also related to the size of the valve. Valve size and response time affect the flow of the WG and how quickly it controls the turbo.

So when trying to pick a WG, using the HP as the only indicator is not a good idea. There are many factors to consider.

Skip Wolfe

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by m42racer:
<strong>Neither. Its about air volume not boost.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Fast didn't mention boost only large vs. small turbo.

I'm guessing you would actually want the smaller wastegate on the slower turbo. With a big slow response turbo you would want to be careful not to let the turbo slow down too much because of the long lag. The smaller wastegate would give a finer "trim" and be able to keep the turbo spinning in the meat of its curve.

This isn't as important on the smaller faster turbo because it can recover much faster than the big one.

Really the more I thing of it, you would really want to go with the smallest wastegate that you could possibly get away with without having boost spikes for any given turbo. I agree with M42 that a smaller wastegate is going to open and close faster than a larger one and give you much finer control. If you could keep the turbo at +/- 10% rpm with a smaller wastegate vs +/- 20% rpm with a big huse wastegate you would have much better throttle control.(note: I am pulling these percentages out of my **** just to illustrate a point)

Skip Wolfe

You didn't give me enough time Master Fast. My wife kept interupting me while I was typing.

fast951

Skip,

You got it. This is the point I was trying to get across. For some reason people think that bigger is better. Even though bigger is usually more expensive.