exhaust manifold studs? | 356 Speedster, 550 Spyder, Replica, Automotive Community

RichardMaxwell

Hi chaps,
im just in the process of replacing the exhaust manifold studs on a 914 type 4 engine. The question being just taken delivery of some s/steel replacements but one end of the is m8 and the other is m10 thread. The one's i'm taking out are m8 both ends. The guy l purchased them from assures me they are correct for a type4 and that they are standard on vw and porsche 1.7-1.8 and 2.0ltrs cylinder heads. If l use the m8 thread in the head the header will not fit over the m10 end. So should l just re-thread the head to take the m10 thread or just get some m8 both ends. Or can anyone me the correct studs l should use?

Cheer chaps

4/13/0611:09 AM

Original Post

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RichardMaxwell

Hi chaps,
im just in the process of replacing the exhaust manifold studs on a 914 type 4 engine. The question being just taken delivery of some s/steel replacements but one end of the is m8 and the other is m10 thread. The one's i'm taking out are m8 both ends. The guy l purchased them from assures me they are correct for a type4 and that they are standard on vw and porsche 1.7-1.8 and 2.0ltrs cylinder heads. If l use the m8 thread in the head the header will not fit over the m10 end. So should l just re-thread the head to take the m10 thread or just get some m8 both ends. Or can anyone me the correct studs l should use?

Cheer chaps

4/13/0611:09 AM

WOLFGANG'89 CMC FWB, FL Supporting Member

You have oversized studs -- designed for when the original ones break off in the head and are drilled out and retapped. The original studs according to CIP1's web site were 9mm x 8mm. Check under 72-75 VW Vans for listing.

RichardMaxwell

Thanks,wolfgang for the input...

4/17/0612:40 PM

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