27 T if I take the head bolts out one at a time to replace them do I need to drain the radiator so antifreeze doesn't come out of them or will it? I am not sure if they go through water jackets?? Thanks Tim
The bolts themselves don't go through to a water jacket, but sometimes the threads in the block go through to the water jacket if block is rusted too much or someone has done a thread repair to the block and went a tad too deep.
In a perfect world, there should be no gusher.
However, not really advisable to do what you suggest. Sounds like you are dressing up the engine with new bolts? If I were to pull a bolt, I'd pull all bolts and chase the threads in the block with a bottoming tap, blow or vacuum out the crud and then very certainly check length of new bolts to the head to ensure that they do NOT bottom in the hole. That would be an instant stripped thread.
Scott gives good advice. If you're going to replace the bolts much better to clean out the holes while you're at it. I'd also have a fresh head gasket on hand.
Tim, you may also find you cannot remove the two rear bolts with the head on. Best follow Scott's advice.
Allan from down under.
Tim, Did anyone ever tell you. "If it's NOT Broke Don't Fix It?"
Go drive your car and have fun..
PS Your car looks like a Montana 500 racer!!!!
Gene has a point. I would not mess with exchanging head bolts "just because". These blocks are old. Every time you remove/re-torque a head bolt you run the risk of breaking a bolt or stripping out a thread. Unless you have other issues, I'd let it go till the next time the head needs to come off.
If you do like you said, and replace only one at a time, there should be no problem.
Best not to remove one head bolt at a time. The gasket seal could be compromised, as it is important to tighten the head bolts in specific sequence, from center bolts to outer bolts.
Spend the time to remove the head, clean out carbon, inspect or replace gasket, tap clean each bolt hole, then place new bolts in sequence, with 40-50 ft/lb.