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-   -   Time For The Cobra To Get A New Engine - The 347 Build (http://www.motorgen.com/forum/showthread.php?t=43136)

Shaolin Crane 11-08-2012 10:09 AM

Holy shit, why so much? I grabbed a set from dick for cheap.

94cobra69ss396 11-08-2012 10:11 AM

That's the same price that the Mahle rings were. The only ones for $20 were for a single cylinder.

Shaolin Crane 11-08-2012 10:16 AM

The set I bought were $22 from dick for the sealed power ones which are the same rings

94cobra69ss396 11-09-2012 02:26 PM

I received my adjustable timing set, new rocker arm and Summit cam degreeing kit yesterday. My new rings, ring file and ring compressor just arrived so I should be able to get a lot done this weekend.

94cobra69ss396 11-09-2012 09:05 PM

I was able to file fit the new rings, install them on the pistons and the install the pistons in the block tonight. The new Total Seal rings show to set the top ring at .0055 x bore, the second ring at .0035 x bore and the oil ring at a minimum of .015. So I set the top rings at .023, the second rings at .016 and the oil rings were .016 out of the box.

Shaolin Crane 11-09-2012 10:59 PM

Oil rings arent so important, mostly because of the size. Looked into mine, they were .022 and .018 BTW.

94cobra69ss396 11-10-2012 08:48 AM

These rings are so much nicer than the Mahle ones. The Mahle rings had a starting gap anywhere between .008 up to .015 out of the box. The Total Seal rings were .007 on every top ring, .005 on every bottom ring and .016 on every oil ring out of the box.

Quote:

Originally Posted by Shaolin Crane (Post 106615)
Oil rings arent so important, mostly because of the size. Looked into mine, they were .022 and .018 BTW.

What spec did they recommend for the brand you used? Mahle recommends a wider gap for their rings than Total Seal does.

Shaolin Crane 11-10-2012 10:01 AM

Quote:

Originally Posted by 94cobra69ss396 (Post 106623)
These rings are so much nicer than the Mahle ones. The Mahle rings had a starting gap anywhere between .008 up to .015 out of the box. The Total Seal rings were .007 on every top ring, .005 on every bottom ring and .016 on every oil ring out of the box.



What spec did they recommend for the brand you used? Mahle recommends a wider gap for their rings than Total Seal does.

Shawn recommended the gap since the pistons were used, they were also hastings rings, not sure if it it makes a difference.

Shaolin Crane 11-10-2012 10:36 PM

I tried calling you back but my phone died. When I went to charge it I realized i left my charger with Vanessa. I'll talk to Dick on monday about his methods.

94cobra69ss396 11-10-2012 10:49 PM

I pulled the cam and installed the stock Cobra one to check about the funky .002 on the intake and the stock cam stayed at 0 until the lobe started lifting it and once closed it stayed at 0. The exhaust lobe was the same. Then I installed the ACC cam and it still did the same thing. I checked the exhaust and it is also ground funky. It stays open .001 until a few degrees before TDC and then closes back to 0. I ended up installing it 2 degrees advanced for all the numbers below. This is what I came up with.

Intake Lift - .328
Exhaust Lift - .327
Intake CL - 116*
Exhaust CL - 114*
LSA 115*
IO - (-5*)
IC - 47*
EO - 43*
EC - 1*
Duration at .050 In 222* / Ex 224*


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