removing 914-6 Heat exchangers
 

I'm mostly a 911 guy but I'm helping a friend remove the 914-6 exchangers and we ran into a decent sized snag. Half the studs have been threaded with plain hex nuts (13mm) and we can't get a socket through the HE to unbolt them. We can get to a few of them by going around but on 4 of them there's almost no access except through the access holes. Is this a typical thing with these HE's? I know on 911's half the studs use M8's (13mm nuts) are removed by going around the HE but it doesn't look like this is possible with the 914-6 HE's.

Also are all of these studs supposed to be put on with barrel nuts?

Thanks

No. Some are supposed to be copper hex-nuts.

Yes, they are a *****! I used a universal head on a 1/4 drive. The universal was specific to the nut size.

Biggest problem i ran into was snapping exhaust studs.

When you re-install, use anti seize and new nuts. I am concerned with the use of cad-plated hardware in exhaust applications. It seems the replacement barrel nuts are all cad plated.

James

James

hmm.. ok I guess I'll just have to monkey with it til it's off. Snapping studs isn't a big deal since the heads will be rebuilt anyway but I'd really like to save the HE's's

Note to self: use proper nuts when installing exhaust.