[Fot] 86mm TR4 Grant Piston Rings

[TRDOCTOR at aol.com]

You'll probably file to achieve the correct gap or check and make sure they 
 are the right manufacturer.  How big in diameter are they?
 
Sam
 
 
In a message dated 4/4/2011 10:59:49 A.M. Central Daylight Time,  
fogbro1 at comcast.net writes:

List,  



In attempting to assemble the 3 piece oil control ring, I  found that the 
expander-spacer is too long, preventing the installation of the  two other 
rings of this set. The expander-spacer also does not fit the bore.  No big 
surprise, but I thought I'd check it in the bore as well as on the  piston. All 
other rings, compression and oil, fit the 86mm std. bore with a  .012 gap. 



I tried the oil control ring set from the second  Grant ring set with the 
same result. 



The (used) pistons are  British made AE, 4 ring. They were installed with 
the current liners as the  engine came to me. There is virtually no wear in 
piston or liner. The liners  were honed to break the glaze. 



I have on hand two sets of  Grant rings for these pistons. 



A few questions for the List:  



1. Has anyone experienced this problem with Grant ring sets?  

2. Should I just forget about the expander ring set and use a single,  
plain oil ring above the wrist pin? 

3. Should I use two standard oil  rings, one above and one below the wrist 
pin by using an additional ring from  the second ring set? 



Any insights/comments welcome.  



Ed Woods  
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