the old one is about.110 average tall by .180 wide, the new candidate is .135  - seems maybe too thin? Got it out of oring assortment at Autozone.. Thanks

 

 

Edited November 10, 20187 yr by Craigar

Compare the friction of the old and new by installing.

Thanks again Dave, that makes sense and I'll give that a try also.  Hindsight "is always 20/20" and you told me right  from the start - "replace ALL 7 hose and this Oring.."

When I woke up today I thought about how hard it is to physically measure something that has angles, distortions and curves and is rubber like - using a micrometer. So I weighed them on a digital gram scale and AT FIRST the old one weighed a little more (1.4 vs 1.3) - because I had just washed it with soap & water and dried it quickly with my T shirt...  Well I figured maybe water is still deep in the "micro cracks" so I "roll snapped" it between my thumb finger a few times and then it weighed 1.3, same as my new candidate.

Then I remembered I didn't throw out the old pump (it was working fine..., but replaced) and I thought I'd look into that hole WOW! That is probably why no matter what I did I could always hear bubbles in my water system when driving - REALLY AMAZING to me THAT this old motor kept "humping along" this long! Also glad overall that I had used Barr's Stop Leak (and almost 2 years earlier "Prestone AS663 Head Gasket Stop Leak with Kevlar" which had been completely flushed out a year ago ) and I seem to leave a white powder build up wherever there was a leak.

 

Stupid joke of the day -- "Do ya think this was sucking air and leaking?"

 

Edited November 10, 20187 yr by Craigar

The new one I fished out of and Autozone assortment ended up feeling tighter than what probably was the stock replacement that czny sent me,which measures .115 in thickness with a micrometer .  The old flat one was just slightly tight. I figured the thicker one might be safer with my old metal pipe cause it took a fair amount of filing to get it to where it was half clean metal again. I probably really ought to get a new pipe!

 

 

filed..

 

steel wool lassoed, back & forth about 30 times

 

here's the other end (rubber hose from bottom of radiator goes over it) - I think I REALLY ought to get a new pipe - (or maybe a new car)

Edited November 11, 20187 yr by Craigar

Looks good That should work.

Don’t get a new car, just a new engine... like an EJ engine 

Cheers 

Bennie

With those pits, either a new pioe, or a thin layer of rtv in the groove. 

With smooth surfaces, I have found that plumber's silicon grease works well for helping seal, and when you have to remove, the hose is not stuck to the nipple.  Also I have used it on the oring.

2 hours ago, DaveT said:

With those pits, either a new pioe, or a thin layer of rtv in the groove. 

With smooth surfaces, I have found that plumber's silicon grease works well for helping seal, and when you have to remove, the hose is not stuck to the nipple.  Also I have used it on the oring.

Coat a new o-ring with some RTV and you will be fine.  I did mine in 2005 and it is still holding (fingers crossed!).

 

Good luck,

Sam

wish I read  DaveT  and somick's replies before I put it all back together - seems OK so far = no drips & holds pressure.

 

The "extra thick" o ring felt pretty tight - and I loaded it up with lithium grease, debated rather or not to "rustoleum" it like I did the heater bypass pipe in this image