Do these end gaps sound right?
10-01-2002, 05:22 PM
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Do these end gaps sound right? Going by the formula I found on the gapless rings instructions its said that the following should be where I need to be
Top ring= .018
Second ring= .014
Oil ring= min .015
I thought the 2nd ring was always gapped larger? Do these numbers look right for a N/A set-up, I'm using the stock pistons with speed pro rings(didn't come with any instructions)
LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Top ring= .018
Second ring= .014
Oil ring= min .015
I thought the 2nd ring was always gapped larger? Do these numbers look right for a N/A set-up, I'm using the stock pistons with speed pro rings(didn't come with any instructions)
LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
10-02-2002, 04:47 PM
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Re: Do these end gaps sound right? anyone out there? <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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10-02-2002, 07:25 PM
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Re: Do these end gaps sound right? you will find a lot of guys run them that way.
But modern thinking is to run a larger 2nd gap than the top gap.
The idea is to avoid a buildup of pressure between the top and 2nd rings which can upset ring sealing.
It is also reported to help keep the rings clear of oil .
FWIW I used gapless 2nd rings not to long ago on this motor.Had some oil control issues.
I now run conventional rings with .026 top and .028" 2nd gaps on a 3.905" bore. A little large for NA but this is a supercharged motor.
And my intake vacuum is just as strong as it was with the gapless, it also has much better oil control now.
There is a lot of info out on the net on this.
Steve
But modern thinking is to run a larger 2nd gap than the top gap.
The idea is to avoid a buildup of pressure between the top and 2nd rings which can upset ring sealing.
It is also reported to help keep the rings clear of oil .
FWIW I used gapless 2nd rings not to long ago on this motor.Had some oil control issues.
I now run conventional rings with .026 top and .028" 2nd gaps on a 3.905" bore. A little large for NA but this is a supercharged motor.
And my intake vacuum is just as strong as it was with the gapless, it also has much better oil control now.
There is a lot of info out on the net on this.
Steve
10-02-2002, 07:52 PM
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Re: Do these end gaps sound right? Well its not like I had a choice cause when I measured the gaps tonight all the top rings had a .018 gap <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> but the second ring came in at .022, Helms states it can go as high as .026 so I think I be fine
LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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10-02-2002, 08:03 PM
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Re: Do these end gaps sound right? 18 and 22 is a nice NA setup IMO.
If they are 2nd ring gapless it don't even matter. The 2nd gap is set loose enough so it doesn't butt is all you need to worry about.
If they are 2nd ring gapless it don't even matter. The 2nd gap is set loose enough so it doesn't butt is all you need to worry about.