[Fot] Help needed, TR250 engine rebuild oil pressure problems

[Andrew Packard]

Thanks to all for the great responses to my oil pressure issue.  With all of your responses I have a nice progression of items to check from least to most invasive.  
To answer several questions you have asked for clarification, here are my answers.
Spin on oil filter with Wix 51516 filter.
No oil cooler.
Engine block was magnafluxed.
Goodparts roller rockers with screw in tact.  
New oil pump replaced somewhat new pump that had scoring.  I did not check the clearances of the pump prior or during installation.  
No cam shaft bearings.
pistons are 40 over with 10.25:1 compression per Kas's measurements in the prep manual.  

I will update the group when I have a chance to investigate further later this week.  
Thanks and I hope to see many of you at Triumphest/VTR!

Andy Packard
CD6746L

On Sep 15, 2013, at 6:41 AM, Irv Korey wrote:

> Andy,
> 
> The spring in the oil pressure relief valve weakens with age. You said it was relatively new, but we all know that new parts are not the same quality as the original parts. Perhaps that is your issue? You can check this by putting a washer under the spring to act as a shim. If your pressure readings go up then you need a new spring in there. 
> 
> Re-reading your post, I see you put in a new oil pump. Referring back to my above statement that the new parts are not always equal in quality to the old parts, I would suggest swapping the old pump back in and see what happens. I KNOW that there have been some issues with the new pumps. I don't remember the particulars, but some people had complete failures with the currently available pumps. I'm pretty sure I read somewhere (6-Pack Forum maybe) that blueprinting the oem pumps was actually preferred using the new pumps.
> 
> The braided line from Ted should not have an effect on your pressure readings. 
> 
> HTH and good luck. I'll see you in a couple of weeks.
> 
> Irv Korey