968 turbo S parts catalog?
10-09-2008, 05:02 PM
#31
Rennlist Member
I can appreciate the desire to make a perfect replica, but there are two problems I see:
1. The factory parts are NLA and even if you get resourceful and use solutions like the 2.7 head, it still won't be a perfect replica.
2. The factory designed the 968 turbo S and RS with many restrictions in place. If race rules didn't restrict their design, the car may have turned out differently. The way I see it, the only reason to build a perfect clone is to be a collector's item or for historic/enthusiastic value. Otherwise, what boost feen did is ideal; he used the turbo S as a basis, and used current technology along with some personalized tuning to make something that looks like a clone on the surface but is much more advanced and much more suited to the needs of the owner.
1. The factory parts are NLA and even if you get resourceful and use solutions like the 2.7 head, it still won't be a perfect replica.
2. The factory designed the 968 turbo S and RS with many restrictions in place. If race rules didn't restrict their design, the car may have turned out differently. The way I see it, the only reason to build a perfect clone is to be a collector's item or for historic/enthusiastic value. Otherwise, what boost feen did is ideal; he used the turbo S as a basis, and used current technology along with some personalized tuning to make something that looks like a clone on the surface but is much more advanced and much more suited to the needs of the owner.
10-09-2008, 05:53 PM
#33
Rennlist Member
Easy? If it was easy it wouldnt be fun.
11-02-2008, 12:15 PM
#35
Rennlist Member
Boost feen: I just noticed you are running the TC turbo pistons. How are they doing -- did they work right out of the box? Any issues with the coatings? I bought a set of 105mm from Tom several years ago, and opted not to use them. Scott Gomes talked me out of using them, and made it easy for me to use Mahle turbo pistons instead. He was worried (by sight) at valve clearance, and was not a fan of Arias generally. I've seen several people use these pistons with success on the 2.5 motors, but am very curious how they are doing in a 3 liter. And, if you need a spare set of 105's for that next rebuild, just let me know...
11-02-2008, 12:25 PM
#36
Three Wheelin'
Well I have about 2000 miles on my engine and it pulls like a bat out of hell with no problems to date! I do not think that any problems would ever arise from what this car is used for! However if I was running this car on the track it would have a smaller turbo to make power sooner and would be set up entirely different to conserve the car for longevity reasonS. ITS ABOUT THE WHOLE PACKAGE WORKING TOGETHER, A HARMONIOUS DESIGN THAT FOLLOWS FUNCTION!
11-02-2008, 12:39 PM
#37
Rennlist Member
Well I have about 2000 miles on my engine and it pulls like a bat out of hell with no problems to date! I do not think that any problems would ever arise from what this car is used for! However if I was running this car on the track it would have a smaller turbo to make power sooner and would be set up entirely different to conserve the car for longevity reasonS. ITS ABOUT THE WHOLE PACKAGE WORKING TOGETHER, A HARMONIOUS DESIGN THAT FOLLOWS FUNCTION!
That's great news. Glad it is running well. Maybe I'll feel ok about selling them on ebay after all. I see you are in N. Cal. I'm down toward San Jose. We'll have to compare motors at a gtg at some point. Mine's working pretty harmoniously these days...
11-02-2008, 07:30 PM
#38
Three Wheelin'
"Any issues with the coatings? I bought a set of 105mm from Tom several years ago, and opted not to use them."
Thom,
I thought the pistons were supposed to be 104.5mm... I have the Mahle turbo pistons, and they are 104.5mm's I'm pretty sure.
Thom,
I thought the pistons were supposed to be 104.5mm... I have the Mahle turbo pistons, and they are 104.5mm's I'm pretty sure.
11-02-2008, 09:03 PM
#39
Rennlist Member
Yes, the stock bore is 104mm, and Andial sold both a 104mm and a "one over" at 104.5mm. I had a block that was scored too deeply for 104.5, so I had Tom C make a set at 105mm for me. I subsequently found a block that could be used at 104.5, and happened to have a set of Mahle 104.5's, so that's what I used in my motor. As a result, I have the 105mm Tom C pistons sitting in a box unused...
12-21-2008, 08:58 PM
#40
Three Wheelin'
I have heard of at least a half dozen or so people in the last 8 years that had major catastrofic problems with there brand new engine weather it be 100 MM 100.5 MM or the 104 MM 104.5 MM anyway whatever your size engine the most important thing to remember is that the PISTONS MUST BE SETUP TO RUN IN YOUR BORES! You see all the complaining in the world will not get your money back that you lost when your motor self destructed! Now all of these unhappy people have 1 thing in common!!!!!!
They tried to have one shop do the machine work, another supplier get them there pistons, another shop source parts for there build and either one of these people putting it together or they themselves put it together. Once the dust cleared from this tangled web then engine was installed in the car and fired up and tuned by yet again another person!
THIS WILL ALMOST ALWAYS SPELL DISASTER BECAUSE IF SAID OWNER WAS KNOWLEDGEABLE ENOUGH TO BEGIN WITH HE WOULD HAVE DONE ALMOST EVERYTHING HIMSELF!
Nikasil blocks or pistons do not mix with Alumasil blocks or pistons, there are several different types of aluminum used in the manufacturing of the common pistons most of us are running from the hand full of companies out there. Finally there are several coating types that companies are using which may or may not work in between your piston metal and your cylinder bore type. Heat rate and clearance issues are the #1 concern in this topic as this is what creates disaster, so do your homework guys there are 100's of great engines built here that work like a charm.
They tried to have one shop do the machine work, another supplier get them there pistons, another shop source parts for there build and either one of these people putting it together or they themselves put it together. Once the dust cleared from this tangled web then engine was installed in the car and fired up and tuned by yet again another person!
THIS WILL ALMOST ALWAYS SPELL DISASTER BECAUSE IF SAID OWNER WAS KNOWLEDGEABLE ENOUGH TO BEGIN WITH HE WOULD HAVE DONE ALMOST EVERYTHING HIMSELF!
Nikasil blocks or pistons do not mix with Alumasil blocks or pistons, there are several different types of aluminum used in the manufacturing of the common pistons most of us are running from the hand full of companies out there. Finally there are several coating types that companies are using which may or may not work in between your piston metal and your cylinder bore type. Heat rate and clearance issues are the #1 concern in this topic as this is what creates disaster, so do your homework guys there are 100's of great engines built here that work like a charm.
12-22-2008, 06:34 PM
#41
I was planning on making that very mistake (buy pistons ,get block machined,build it myself and then let somebody tune it ...) .
But a phonecall and a estimate later ,made me realise that this is not the way to go .the local shop that is going to build my engine has done several turbo conversions and even offers a (limited) warranty on the race engines that he builds!!!!!
But a phonecall and a estimate later ,made me realise that this is not the way to go .the local shop that is going to build my engine has done several turbo conversions and even offers a (limited) warranty on the race engines that he builds!!!!!
12-23-2008, 09:26 AM
#43
Three Wheelin'
Raj wrote:
"It will avoid finger-pointing in case things don't go well. You want a single point for any issues."
________________
That's fine, so long as the builder stands behind his/her work after they have your money...And they really use the parts they say they are using. It's hard to double check internal components once they have been installed.
Unfortunate situations have happened!
"It will avoid finger-pointing in case things don't go well. You want a single point for any issues."
________________
That's fine, so long as the builder stands behind his/her work after they have your money...And they really use the parts they say they are using. It's hard to double check internal components once they have been installed.
Unfortunate situations have happened!
12-30-2008, 05:02 PM
#45
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