Anyone know where a good shop near Racine WI, that can check over and reseal cups on lb7 head for my dads truck ? Doing headgaskets and on limited time . Thx !
LB7: machine shop
- Thread starter 05dmaxdriver
- Start date
The cups will need to be re-sealed when the injectors are installed and torqued down. Any competent shop should be able to check them for flatness and whatnot, but the cups shouldnt be resealed without clamping force on them while the sealant cures. Just clean the cups and the head really well, and then put it all back together.
Make sure to use the high temp red loctite.The regular red only goes to 350 degrees.Do you have the new seal kit already?
Make sure to havr them pressure check the heads for cracks and of the cups dont leak imo leave them i did on mine with zero issues to date and on others engines :thumb: but if you want to theres certainly no harm in resealing them :hug:
I would reseal the cups no matter what,your leak could have been getting past the cup and not the gasket piece of mind to do the cups while its apart other wise you might be buying new seals all over again and doing alot of work to get to them.Just my oppinion
If he has a machine shop pressure test the heads , the seal on the cups would be verified in the same process . We have had a few heads pressure tested and found cups just barely leaking.
X2 unless youre having them pressure tested. I had only one cup pull out of mine, but discovered that 3 had been leaking. S that means that 2 of the leaking cups stayed in the head when i pulled the injectors. Some people leave them in and get lucky, but for me, i dont want to be that far into the engine again unless its for an upgrade, so i cover all my bases.