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grant piston rings

I found a set of grant piston rings under the spare tire. I was going to put new rings on my car next week and was wondering if these are a decent brand.
Old 08-01-2002, 03:44 AM
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A well known manufacture....from the 50/60s.....
that's last century ....gud stuff back then, for American iron.

I didn't know they were still in biddness. How long have the rings been under that spare?
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Old 08-01-2002, 10:44 AM
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Grant rings don't seem to have the best rep necessarily. A search on the Shoptalk Type 4um pops up a note from Raby about Grant rings having too much end gap out of the box...

Deves seem to be good.

--DD
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Old 08-01-2002, 01:47 PM
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Deves are great, throw those grants as far as you can out of sight, they are good on some engines, but not type IVs/
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Old 08-01-2002, 07:53 PM
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Thumbs down

I had a set of Grant rings that came with my P/C set... They were wayyyyy out of whack, all too large.

Sad part is, from that whole pack, all I am using from it are the pistons. It would have been cheaper just to buy the pistons seperate.

Anyone want a set of brand new 96mm jugs?

Later,
Tom
Old 08-02-2002, 10:49 AM
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A few other people I talked to (1 restores MGs for a living) said grant are no good, thats probably why they were never installed by PO. Monday I will be odering from PP.
Old 08-04-2002, 07:05 AM
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ruddyboys,

Good choice, I listened to Jake and the others on STF and I am glad I did. I had Deves installed on my 96 JEs...my rebuild went smooth, and the motor is running strong...

Good Luck

Bob
Old 08-04-2002, 05:36 PM
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Mark Stephens sold them with his kits and look at him now.
I bought one of his 2056 top end kits just before he went out of business and have a real strong track car w/ grant rings. His head work was the ticket, unshrouding, port and polish.
Better to too much end gap than not enough.
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Old 08-05-2002, 09:19 AM
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on the subject of rings

I unfortunatly did not get the memo on type 4 ring selection and I am paying for it now. I a installed the total seal gapless second ring on a set of stock euro spec KS p and c's. I have 2700 miles on the engine and it still will puff smoke @ idle during a long traffic light.

This goes against all of my previous type 1 experience. Not sure why Type 4's do not like the TS rings?


Total Seal said I should give it 3k to fully seat? I think I will be replacing them by 5K.


BTW. I have great/even compression. 145lbs+- 2lbs engine runs nice and cool. 24-26 mpg.

This is my data on the Total Seal issue. I have to wonder, Has anyone had Total seal rings to function and break in or is oil control @ the cylinder always an issue....????



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Old 08-05-2002, 10:05 AM
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I have had zero luck with total seals ina TIV engine on the street...They never seemed to ever break in....Also Greg @ FAT Performance has seen this as well.

A ring with too much end gap is terriable, crankcase pressure and burning oil is a huge problem......

It is Deves, or Hastings for me, and thats it, I have tried the others, they cost me time and money..
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Old 08-05-2002, 11:08 AM
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Jake,

Have you evered had them seat? Should I keep going or make the swap to the stock oem rings. OR swap to the deves? It is a totaly 100% stock engine. I want mpg/and longivity...?
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Old 08-05-2002, 12:59 PM
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Got so disgusted with them in 3 engines that I tore them down and replaced with Deves.....ho chances there, they break in on my dyno in most cases.
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Old 08-05-2002, 01:15 PM
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Found this old thread and was wondering if Grant pistons rings are still not recommended.

The machinest sold me a set after I had by 94mm pistons and cylinders cleaned and honed.

The top ring gap measured 0.35mm and the 2nd ring gap measured 0.25mm.
Old 08-08-2012, 08:45 PM
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I don't think Grant has made piston rings since the 1970's. There is a reason Grant only sells cheap steering wheels now.
Old 08-09-2012, 04:12 PM
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