Originally Posted by Mike J (Post 10391244)

Off the top of my head...

Interesting about the oil cooler - was the corrosion inside or outside, and what do they think was the cause?

They said internal. Did not ask about cause - I just figured age.

You are replacing the rings, correct?

Was not planning on it - should I? They look OK.

With four chain sprockets, you are replacing the layshaft sprocket as well? I seem to remember that was a bit of a press fit. What about the chain guides?

Yes, Layshaft sprockets. I figured if I'm doing the cam side I should do the other side. How to get them off/on? The chain rails were new. Curiously, one of them cracked (right). Not sure why/how. I'll post pictures of it when I do the rebuild thread (after I get the case back). Obviously, I will replace the cracked one.

You flushing out the chain tensioners as well? How about the lifters?

Yes on the tensioners. No on the lifters. I don't want to risk breaking them but I will try squirting in some carb cleaner.

I assume on assembly you are going to check clearances, etc? I would buy a ARP or equivalent rod stretch gauge, it is not expensive - most accurate method for torquing the rod bolts and now doable since the crankshaft is out.

Absolutely, and I will be using plenty of plastigage. I was planning on using torque method with the value from the machine shop after they stretch/re-size.
Cheers

Mike

Originally Posted by Vorsicht (Post 10391376)

See my comments in green.

Originally Posted by Mike J (Post 10391396)

Replacing the sprockets as a set when replacing the chain is a good idea - I did that, I figured let them bed in all together.

As for rings, what is "alright"? did you measure the ring gap and the land sizes on the pistons?

I would pull the lifters and flush them, and if one need replacing, so be it. If you are spending this $$$, the additional cost is worth it.

Cheers,

Mike

Originally Posted by Erin606 (Post 10391469)

This sure does sound like a lack of oil issue. Total capacity if you drained everything is more than 9. Did you drain the oil lines, oil cooler etc?http://xin70.info/10.jpg

Originally Posted by Mike J (Post 10391616)

Huh? Not sure if you read the thread - the issue has been found, and a solution is being worked on.

Originally Posted by Ed Hughes (Post 10391578)

With as much running as you did, without a lot of load/acceleration and deceleration/ decompression, I'd not chance the rings seating.

In for a penny, in for a lb.

Originally Posted by bobt993 (Post 10392204)

Peter,

I may have a set of tensioners I can donate to the cause. They are used, but good. If I locate them I will get them in the mail.

Originally Posted by Vorsicht (Post 10393001)

Before I buy a new set of rings I want to understand why the old ones should not be used. The rings were brand new and have a total of one hour run time. 15 minutes of that was at 2000-2500 RPM. The rest was between 1200 (inital start up ) to 800 (Idle stabilization). Are we saying the rings deformed/seated in an inappropriate manner and are thus suspect? I don't think the old new rings got seated properly as there was evidence of blow by (oil) on top of the pistons. No problem getting new ones, just don't want to spend needlessly.