one of my arp head bolts wont go all the way down
#1
one of my arp head bolts wont go all the way down
this is on my a6/z6 mini me. i installed the head wit hthe arp head stud, arp lube and 70lbs tq. car ran good, i hgooked up the radiator and oil started mixing with the oil. car ran all of 2 mins. so i pulled the head, decked the head and ordered a cometic head gasket. i took out all the bolts to clean the holes, some of them had moisture in them. i did this one by one returning all the bolts to there proper holes. but theone to the far left in the back sits 1/2 inch hight then all the others. i took it back out, cleaned it again, double checked the hole and it still dosent go down. when i go back outside ill pull that one out and another to check the length to see if there the same. i realy doubt the bolt streched 1/2 inch. anyone else have this issue?
#4
Re: one of my arp head bolts wont go all the way down
yeah mine is the same on my d15b2/y7 head combo. using the y7 head bolts it sits about a half inch higher as well. so i installed a b2 head bolt in its place and its fine. i thought it was wierd as well. must be something common on the d15's and d16a6 thats not like the z6 on.
#5
Re: one of my arp head bolts wont go all the way down
Originally Posted by jagojon3
Using z6 studs I assume?
I had to add some extra washers on the back left one, same one you're talking about. It's held fine for over 2 years, just get hardened washers to be safe.
I had to add some extra washers on the back left one, same one you're talking about. It's held fine for over 2 years, just get hardened washers to be safe.
#6
Re: one of my arp head bolts wont go all the way down
wow, i dident know it was as wide spred. a couple of threads i looke up on h-t said i should run a tap down the hole. has anyone tried that? i wonder if that caused the coolant leak before i got the cometic gasket. well, if yall think it will be fin i am gonna throw the head on, cuz i dont have access or money for a tap