DIY converting -86 block to 87+ tensioner?? - Page 2 - Rennlist - Porsche Discussion Forums


DIY converting -86 block to 87+ tensioner??

Old 06-13-2018, 01:20 PM
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Location: Rancho Cucamonga, CA
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Originally Posted by 951and944S View Post
Just picked up my block from bore/hone today and had all studs removed because I was highly considering nikasil.
Will ping you dimensions of studs.

Against the norm here, I would set the tensioner and use a bit same size as the holes in tensioner.

Just kiss the aluminum boss with that size bit to mark it for all three holes then remove tensioner and proceed from there.

The bit of mounting hole size will self center your holes and will have created a divot that will keep your 1st drill size from walking when you proceed up in bit sizes to reach the recommended 8mm thread tap size.

that was my thought as well.
i'm going to check with my local machinist to see if he's got a big drill press.

Originally Posted by 951and944S View Post
Now, where do you find one of these tensioners...., I hear they are pretty rare...
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Old 06-13-2018, 04:32 PM
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I have one spring tensioner that I don't need if anyone is interested.
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