Bad machine work or am i over looking something?

[moper]

I just cut the stud and use an ARP 12pt shouldered nut on it (no washer). The #5 cap has such a large mating surface and twice or more mass than a normal cap - so there's no chance of issues by deleting the washer.

 

[moparlover]

i'm glad you got it right

 

[CPMotorworks]

Studs causing binding problems in the caps is a common issue across all brands of engines.

Very rarely does a block need to be line bored unless steel caps are installed or the mains have severe damage.
Totally disagree because of a combination of what you wrote below and the improving of machining processes and equipment. If you want the accuracy and ultimately the performance and longevity you have to address the inconsistencies and have the accuracy brought up to modern standards as a starting point. IMO, you are closer to being right if you get further from performance as a goal. Performance including smoothness, longevity, and economy.

Factory machined blocks are far from perfect, because its done in a production setting. Everything is not square and hole location perfect.


If the shop that did the line hone had the studs on hand they should have done this, but if they were not aware of studs being installed it is not their fault.
Totally agree.

First, lets make it clear that a line bore machine and a line hone machine perform similar operations but two different results.
A line bore is just like boring your cylinders, one at a time, and is essentially a roughing operation. It is used to remove excessive material like in the case of installing steel main caps. Yes, you can leave a very nice finish, but it is still a roughing operation.
A line hone is a single mandrel with stone that does all 5 mains at the same time, making for better alignment, finish, and consistency on sizes and is a finish operation like honing cylinders, rods, etc.
This does nothing to correct for cap registers being cocked, bolt hole locations being shifted, i.e. other machining errors by the production line.
Every location on the block is based off/ in reference to the mains. That's why its important to do them first, with the correct operation.
Then its still necessary to have the proper equipment to correct everything else from that point on to get to the point of smoothness, longevity, and performance.

Cudafever, glad you were able to get it worked out.

 

[moper]

CP - We agree - perhaps i read your quote in the wrong frame of mind. I read your post as "you don't have to touch/address the mains" - which I believe to be incorrect if one wants to have the best result. Not just more power, but the best all-around result.

You point mirrors mine here:

"Every location on the block is based off/ in reference to the mains. That's why its important to do them first, with the correct operation."