Head bolt question
#11
01-17-2019, 08:16 PM
It's actually the opposite. TTY bolts are a new thing that older vehicles don't have. Manufacturers found that they hold better over longer periods, and it's easier to get a consistent torque across the head because you actually pass the bolts yield point , meaning the bolt reaches maximum torque before final rotation, and all the bolts yield at the same point.
#15
01-18-2019, 10:26 PM
Camel Trophy
I understand, I didn't think you were. I think that it still allows it to get that much closer, and maintain that similarity despite different conditions sch as temperature, humidity, a little oil in the threads of one bolt, a little coolant or debris in another, etc. It makes the exact torque less specific taking those things more out of consideration.
Also, I believe that over time with repeated hot/cold cycles as the bolts may begin to move a little, they maintain a similar torque because they have a springy-ness to them.
Also, I believe that over time with repeated hot/cold cycles as the bolts may begin to move a little, they maintain a similar torque because they have a springy-ness to them.
#16
01-18-2019, 10:49 PM
Recovery Vehicle
The TTY bolts also help out rebuilding engines in the bush. Very helpful when proper tools are hard to come by. 15ft lbs isn't too hard to achieve with a junk torque wrench from Auto zone. Then a sharpie and big wrench does the rest. I find it very user friendly vs my $600 snap on wrench that I have to send off to get re calibrated a lot.
Plus out of curiosity I've "hand tightened" some head bolts then did the 90 degree turns with good success. I wouldn't recommend it, but it works.
Land Rover 2004 and older have a lot in common with tractors. I love it.
Plus out of curiosity I've "hand tightened" some head bolts then did the 90 degree turns with good success. I wouldn't recommend it, but it works.
Land Rover 2004 and older have a lot in common with tractors. I love it.
#17
01-19-2019, 06:08 PM
Pro Wrench
#18
01-20-2019, 06:33 PM
#19
01-20-2019, 07:47 PM
Pro Wrench
well I was going to say...as I over tightened that bolt it never got any tighter. I think the bolt was stretching as I turned it. Maybe it has something to do with how far the bolt goes in...idk.
#20
01-23-2019, 01:08 PM
Join Date: Mar 2018
Location: MD
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So I've been taking my time with this project to ensure that everything was done correctly. Today everything was going good. I changed the oil and started to fill the engine with fresh coolant before I started the up, I go to slide my jack under the front end to raise it up and that's when I saw a puddle of fresh coolant pooling up underneath. It seems as the coolant is running down the right side of the transmission. Any ideas on what the culprit may be? I know that every bolt is torqued to spec and the head bolts were done in the 15 ftlbs and 90° + 90° turns. Feeling pretty crushed and ready to beat the snot out of it with a baseball bat. Any thoughts would greatly be appreciated