This video made me realize that not only are you pulling the head down to the block when you tighten the head bolts, but you were also pulling the block up to the heads. Well, at least the area around the threads. It may be a minuscule amount, but I think it’s possible. Am I wrong? I don’t know I’m not a machinist.
Vega
The key is to bore the block with 225F coolant circulating 🙂
Mong Moua
On an OEM like build probably not. On a high boost application I would. I'm sure it depends on the design of certain engines as well. My 4g63 distorted about .001". I'm running a 2618 piston which expands a lot more than your average piston. Some builders will just run a larger piston to wall clearance to make up for the expansion but you'll end up with piston slap. Running minimal clearance with non distorted cylinder walls will help prevent piston slap. When you're spending all this money into a built motor why not and get it perfect? Maybe that's the ocd in me and 10+ years of me being a machinist. I'm a big believer in the saying, "anything that can go wrong, will go wrong."
Giannis Papaeoannou
If you have wn open deck aluminum block makes different. especially if the cylinder walls are not very thick
Jeffrey Mccullen
Torque plates 👍👍😁
D'Arcy French
Your a mechanic or back yarder, your opinion means nothing. You “honed” the block with a spring loaded stone and a drill 😅
Kaede Schulz
Yea some engines certainly do.
Reset
Bro dropped the whip out of the car gaht dayum!
John Elliott
Yes sir, I agree that it is necessary. I have seen the backyard guy do the rebuild and they'll run the same. Question is which one will last longer than the other I also know the answer to that one also closing in on the 40 years mark. Each person is going to do and think what they want. All you have to do is take two 21 century modern motors and do one each way and see which one will go 300k on the rebuild. I also know that answer too from real world daily trials and it is not the back yard slap together. Good morning and great day to you all. You do yours your way and I will do mine with them and keep putting 5 /50,000 on mine and do what you do. Enjoy your day today and may it go flawlessly.
Corsairforu
True it may be a little overkill one tenth shouldn't matter, that is one 37ths of the thickness of a typical sheet of computer printer/copier paper.
This video made me realize that not only are you pulling the head down to the block when you tighten the head bolts, but you were also pulling the block up to the heads. Well, at least the area around the threads. It may be a minuscule amount, but I think it’s possible. Am I wrong? I don’t know I’m not a machinist.
The key is to bore the block with 225F coolant circulating 🙂
On an OEM like build probably not. On a high boost application I would. I'm sure it depends on the design of certain engines as well. My 4g63 distorted about .001". I'm running a 2618 piston which expands a lot more than your average piston. Some builders will just run a larger piston to wall clearance to make up for the expansion but you'll end up with piston slap. Running minimal clearance with non distorted cylinder walls will help prevent piston slap. When you're spending all this money into a built motor why not and get it perfect? Maybe that's the ocd in me and 10+ years of me being a machinist. I'm a big believer in the saying, "anything that can go wrong, will go wrong."
If you have wn open deck aluminum block makes different. especially if the cylinder walls are not very thick
Torque plates 👍👍😁
Your a mechanic or back yarder, your opinion means nothing. You “honed” the block with a spring loaded stone and a drill 😅
Yea some engines certainly do.
Bro dropped the whip out of the car gaht dayum!
Yes sir, I agree that it is necessary. I have seen the backyard guy do the rebuild and they'll run the same. Question is which one will last longer than the other I also know the answer to that one also closing in on the 40 years mark. Each person is going to do and think what they want. All you have to do is take two 21 century modern motors and do one each way and see which one will go 300k on the rebuild. I also know that answer too from real world daily trials and it is not the back yard slap together. Good morning and great day to you all. You do yours your way and I will do mine with them and keep putting 5 /50,000 on mine and do what you do. Enjoy your day today and may it go flawlessly.
True it may be a little overkill one tenth shouldn't matter, that is one 37ths of the thickness of a typical sheet of computer printer/copier paper.