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coolcavaracing.com
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Need some pointers on the 993 flange thing
I have started to try and flip the flanges on the one 993 heat exchanger to install onto my 964 transplant, and I am not sure I am cutting in the correct location.
When you look into the flange, there is a nice welded line which is the joint between the flange and the pipe. I am not 100% sure where on this line I should be cutting. I cleaned one of them up a bit and found a nice lip at the top of the welded line and assumed this to be the correct location - but it feels now like I am just cutting to much  Here is the best picture I could get with the phone - am I cutting in the wrong location? 
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Pål (Paul) - The Norwegian lost in Finland... 1978 911SC 3.6 | 2001 Boxster S Racing Car | 1966 912 based 911 RSR replica racing car (for sale!) come and follow the Porsche Sports Cup racing fun and me at www.facebook.com/coolcavaracing 
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07-01-2010, 05:16 AM
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Join Date: Oct 2000
Posts: 3,630
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You really need to grind the weld down until it comes off. try and not take any extra material, Kevin
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07-01-2010, 06:57 AM
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What we do is plunge an end mill in there and machine out the weld and HAZ then reweld them in correct location but correct me if I am wrong don't the 964 3.6 have 4 bolt hols on the exhaust so you can use either exchangers?
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Ben 89 944,85.5 944 914-6 2.4s GT tribute. 914-6werkshop.com |
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07-01-2010, 08:42 AM
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coolcavaracing.com
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Thank you Kevin and Ben. As I do not have the benefit of the end mill you have Ben, the only tool available to me is a Dremel. Sounds like I will be grinding and cutting for quite some time then!!! As I have already cut into the exchanger, there is n turning back
 Ben, only the 993 has the 4 bolt pattern for the exhaust - unfortunately... Ben do you have one exchanger that has already had this work done on it that you would consider an exchange deal on for my half started one?
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Pål (Paul) - The Norwegian lost in Finland... 1978 911SC 3.6 | 2001 Boxster S Racing Car | 1966 912 based 911 RSR replica racing car (for sale!) come and follow the Porsche Sports Cup racing fun and me at www.facebook.com/coolcavaracing
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07-01-2010, 09:25 AM
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privat message me i can tell you how to make a jig, stew09@AOL.COM
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07-01-2010, 06:49 PM
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Quote:
if doing it by hand I have done it with a die grinder not a dremel and used thicker cutting wheels it tacks longer but can be done. I gues my question next is are you going to weld it up or have it done by someone? If by someone that is a professional they may want to do the rest of the grinding I know I would
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Ben 89 944,85.5 944 914-6 2.4s GT tribute. 914-6werkshop.com |
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07-02-2010, 04:39 AM
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coolcavaracing.com
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No, I will be welding them up - I have had some emails with Kevin, and he has parted with some very helpful suggestions.
My main problem was ensuring I cut off the flanges correctly in the first place - looks like a long evening with the Dremel and some cool beer for me then 
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Pål (Paul) - The Norwegian lost in Finland... 1978 911SC 3.6 | 2001 Boxster S Racing Car | 1966 912 based 911 RSR replica racing car (for sale!) come and follow the Porsche Sports Cup racing fun and me at www.facebook.com/coolcavaracing
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07-02-2010, 05:52 AM
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