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80 3.0 , Top-in rebuild, Change Head studs?
I am just about finished with the Top End on my 80 911 SC, but someone said I Must replace all 24 head studs or they would for sure snap in no time. I have about 90K on the motor and am not looking forward to replacing these. Do I have to? Or is this guy just trying to get me to spend more cash?
I heard removing the studs is a bear..., not to mention the 24 bucks each replacement cost. Thanks for any insight... |
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02-24-2000, 03:04 PM
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Just curious, but why did you have to re-do the top end on an SC engine with only 90,000 miles on it?
Brian |
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02-24-2000, 03:29 PM
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If you check the April 2000 issue of 'Excellence', you will find that Bruce Anderson is recommending the use of steel studs at all 24 locations now! Whoever quoted you $24.00 per stud is definitely not EVEN giving you a break on the price, and in light of Bruce's latest advice, must be trying to unload inventory before the demand goes to zero!
------------------ Warren Hall 1973 911S Targa |
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02-24-2000, 08:33 PM
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Value guides started leaking by.
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02-25-2000, 09:21 AM
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Hi,I recently rebuilt my 78SC engine (100 K)because 3 head studs had snapped,I did find valve guide wear as well.I did alot of research into replacment studs,Race-Tech to expensive and over engineered for my "normal" use,Delivar prefered option.Vertex have a online offer $12 each.I spoke to some race engine builders (UK), and the opinion was only replace the bottom 12, unless going for the ultimate then 24 Race-Tech.They had snapped at the joint between head/cylinder due to corosion(the car had been stood for long periods without use).I wasn't looking forward to the removal after i heard how hard a job it was and could only be done with a special "snap on" tool.I managed with a normal stud remover and some patience.The advice i received was to gently warm the case ,heater placed underneath, then localy heat the stud.When removing the stud unwind !/2 a turn ,then back up 1/4 turn etc.All of my 12 studs came out easy.If i had the engine out already it wouldn't cost much more to do the full job, for peace of mind. Hope this is of some use to you. GUY.
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02-25-2000, 12:41 PM
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