[Healeys] 100 piston rings- Moss

[Perry Small]

Sent from my iPhone

> On Apr 29, 2022, at 9:17 PM, Alan Seigrist via Healeys <healeys at autox.team.net> wrote:
> 
> 
> I put 40 over / 5 ring pistons on my BJ8 - 100K miles later the car burns no oil & hone is as good as the day it was machined.... so I do prefer that it doesn't eat any oil.  I am not averse to putting all 5 on if you can.
> 
> Best,
> 
> Alan
> 
>> On Sat, Apr 30, 2022 at 1:11 AM Henry G Leach via Healeys <healeys at autox.team.net> wrote:
>> The way I understand it, is today its all about friction. Many of the modern day pistons are three ring only. In the old days we needed all the squeeze we could get to keep oil out of the combustion. With todays machining capabilities, tolerances are so close that its not as much an issue as in the past. If you want less drag on your engine you can leave out the oil control set, but you may get some blow by on these old iron clunkers. 
>> 
>> I tend to follow the proper parts assembly, so that if there are five slots I fill them with 5 rings. My NOS replacement .020 Mahle pistons had 4 and a matched set of Grant rings fit perfect. No blowby and good compression. Hank
>> 
>> 
>> 
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