[Holeshot71]

Quote:
Originally Posted by Stan Weiss View Post
Yes the pistons were designed with a wrist pin offset and placed in the direction they were to quite the engine on cold start up. In the cases I have seen reversing the pistons at build time did no damage it just made the engine a little noisier. Remember almost all after market piston have no offset.

Stan
Quote:
Originally Posted by PAUL K View Post
Agree .... Only issues might be some noise and premature wear. What may cause an issue is if the rods were installed backwards along with the pistons. But if there is adequate rod side clearance that wouldn't matter either.
From Page #11 back in August (Quote)

Suppose it wouldn’t hurt to go in there with some feeler gauges and check the side clearance? Looking at the pics more, there are definitely some rods that are correct and some that are not..

[TRADERMIKE 2012]

Originally Posted by Holeshot71

Quote:
Originally Posted by Stan Weiss View Post
Yes, the pistons were designed with a wrist pin offset and placed in the direction they were to quite the engine on cold start up. In the cases I have seen reversing the pistons at build time did no damage, it just made the engine a little noisier. Remember almost all after-market pistons have no offset.

Stan
Quote:
Originally Posted by PAUL K View Post
Agree .... The only issues might be some noise and premature wear. What may cause an issue is if the rods were installed backwards along with the pistons. But if there is adequate rod side clearance that wouldn't matter either.
From Page #11 back in August (Quote)

Suppose it wouldn’t hurt to go in there with some feeler gauges and check the side clearance? Looking at the pics more, there are definitely some rods that are correct and some that are not...

Mikes reply:

We already closed the bottom and building it as we speak, however if you look back in the posts in this thread you will find that we took these measurements.

Today we found that the Rods are in correctly.


"Why evade the question, I went through all the work to check the lower end of this motor and the main reason was to see if the Rods were in correctly, but now you won't tell me. I ask not because I want to prove a point, I just want to know whether or not they are in backwards as the 7 pistons. There was great concern in the past posts. So, what is it?

NOTE: We felt, with our hands, that the flats were adjacent to each other in the center/center and that the rounds were adjacent to one another.

We deduce that the Rods are correctly orientated, thus only the 7 Pistons need to be re-orientated, this is a yes or no question please?"

[Formulajones]

Kenth showed in post 658 what others have been talking about.

Yes that rod is in backwards in that picture. There may be others, I haven't bothered to look at other pictures to verify.

Just seeing that one rod, plus the fact that 7 other pistons are backwards is all I need to know, that short block needs torn down and done the right way. Most likely just bite the bullet, hit the machine shop and do the whole short block properly. Then hope your knurled valve guides last you for at least a few thousand miles before that has to be revisited. Or better yet, do it right while the short block is down.

You say you're making progress Mike, but most of us are looking at this as a train wreck that has issues that just haven't been addressed yet. We are all trying to help you but I believe what ever your current situation is, it's not allowing you to deal with this thing properly. Whether it's money, work space, or time, it's understandable. Hope it turns out for the best.