[Subscribe to Daily Digest] |
Just to clarify, it's not the "engine" I'm concerned about.
And thanks, but you can have them back, plus two more from me and that makes you at positive 4--so you'll be ahead.
To start, either you didn't read or didn't understand the original question. Then you refered me to something I've already read, understand, and was actually refering back-to. And now you tell me that I'm not capable of decerning the difference between someone who is trying to sell me parts and someone who knows what they're talking-about, has direct experience, and is not just repeating something they read one time on the internet--like you're doing, eh?
Just so you know, ALL turbo engines are notorious for producing a lot of heat and there have been plenty of 4-cylinder turbocharged cars built that aren't Saabs. I love my Saab in it's uniqueness, but in regards to many things, and specifically in this case sizing a turbine and compressor for a 2.0 liter displacement, internal combustion engine, it's simply not that unique. Another example, are you aware that you can open-up a Summit Racing catalog and order an EFI variable fuel pressure regulator--NPT or -AN threads and all--and it will work in your Saab, despite the fact that it didn't come directly from Sweden?
I'm also not talking about "tuning" in the general sense, conserative or otherwise, I'm trying to gauge the feelings/thoughts of people who have direct experience in regards to specifics.
Like increasing exhaust flow in a 5cm2 body by clipping the turbine, smaller paddles and less surface area while in the same shape absolutely HAS to translate into increased flow around the turbine. The question is how much? Is that increase too turbulent and does more harm than good? And, is it liveable? Or, are the EGTs extremely high regardless? As Jak pointed-out, at the time of the previous posts and discussions clipping was a relatively new thing, also at that time I don't believe uprated thrust bearings were available for TD04's.
Don't you see? I'm not completly discounting what Dr. Boost posted or his opinions--but I am testing them against the thoughts of others. I'm also not discounting the opinions of the guys at the 4 different turbo shops I've spoken with--but I'm testing them as well. I'm trying to find all the information and opinions that I can so that I'm more able to define where the fine line between unacceptable and acceptable actually is for the application.
What combination/hybrid Mitubishi turbo are you running Zeke? How does it perform?
Can you tell me, how bad were the results when Dr. Boost tested a 5cm2 and/or 6cm2 with an 18T or larger compressor? What was the effect when Dr. Boost tried clipping the turbine instead-of increasing the housing size? At what point did the backpressure and temperature become unacceptable? How much flow was being throughput at that point? What boost pressure was that at? What did the compressor map actually look like? Excuse me if I sound a little rough or glib, but those are the types of Engineering questions I'm hoping to answer either empirically or otherwise--because at the end of the day it is those answers alone which ultimately determine whether it's worth trying or not.
posted by 67.10.24...
, Thu, 2 Dec 2004 15:53:19, Sat, 4 Dec 2004 23:34:15, Sun, 5 Dec 2004 00:11:01
, Tue, 30 Nov 2004 20:19:11, Tue, 30 Nov 2004 18:45:47, Tue, 30 Nov 2004 06:33:39, Tue, 30 Nov 2004 05:22:46
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
