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Old 06-25-2019, 05:51 AM   #1301
Rich Biebel
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Default Re: H-I-J '76 Nova re-fit.

Cutting grooves in the lifter bores canít be undone.

Using the EDM hole lifters is an option and can be changed.

Some Stocker racers use Schubecks or Trend lifters and run tons of spring pressure.

The engine I built was low buck and the lifters were cheap.

It had good oil pressure and never hurt the bottom end

You could have used the edm lifters with no grooves and if that worked you were good. If it didnít you could step up to better lifters. No grooves to complicate the build.
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Old 06-25-2019, 08:32 AM   #1302
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Default Re: H-I-J '76 Nova re-fit.

Quote:
Originally Posted by Rich Biebel View Post
Cutting grooves in the lifter bores canít be undone.

Using the EDM hole lifters is an option and can be changed.

Some Stocker racers use Schubecks or Trend lifters and run tons of spring pressure.

The engine I built was low buck and the lifters were cheap.

It had good oil pressure and never hurt the bottom end

You could have used the edm lifters with no grooves and if that worked you were good. If it didnít you could step up to better lifters. No grooves to complicate the build.
I have 4 sets of lifters, I tried EDM lifters and didn't like them. My preference is the groved block with non EDMs. I know not everything I'm doing or have done will be popular, and I'm ok with that. In my opinion there will never be advancement if we all do the same thing. I could have called any engine builder and had one built, I could have just paid 50k for a sorted out car, not my style. I appreciate all the help and advice, but sometimes I just gotta be me.
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Old 06-25-2019, 09:23 AM   #1303
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Default Re: H-I-J '76 Nova re-fit.

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Originally Posted by Glenn Briglio View Post
What size are those grooves? Lifters have edm holes? Didn't you have an oiling problem already?
Grooves are .006, no edm holes in the lifter. This engine ran fine for years with grooved lifter bores (as have others), current oiling issues are not related to this.
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Old 06-25-2019, 01:04 PM   #1304
Larry Hill
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Default Re: H-I-J '76 Nova re-fit.

The groves look wider than the thickness of two hairs.
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Old 06-25-2019, 07:58 PM   #1305
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Default Re: H-I-J '76 Nova re-fit.

Quote:
Originally Posted by Nmbr1GMfan View Post
I have 4 sets of lifters, I tried EDM lifters and didn't like them. My preference is the groved block with non EDMs. I know not everything I'm doing or have done will be popular, and I'm ok with that. In my opinion there will never be advancement if we all do the same thing. I could have called any engine builder and had one built, I could have just paid 50k for a sorted out car, not my style. I appreciate all the help and advice, but sometimes I just gotta be me.
Hey.......when I get get something in my head I won't be stopped either
(just ask Dissident) carry on.......just be sure to show us the results.
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Old 06-26-2019, 01:38 PM   #1306
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Default Re: H-I-J '76 Nova re-fit.

I fully realize that I have no skin nor treasure in the project that Todd and Autumn have shared.

However, when it comes to some technical items and issues, I think it is necessary to make those issues obvious before one goes down a problematic pathway that may be paved with lots of "he said, they said, everybody knows..." kinds of guidelines.

For a SBC (2.45" mains, 2.1" rods) with normal racing clearances, it is worthwhile to note the resultant internal oil leakage sources.

These data are as listed from items indicated:
Lifters (16) = total diameter of an orifice = 0.2323"
Cam brgs (5) = total diameter of an orifice = 0.2369"
Rod brgs (8) = total diameter of an orifice = 0.2899"
Main brgs (5) = total diameter of an orifice = 0.2476"
Will leave it to others to evaluate what those orifices flow in gpm at various pressures. It is quite eye opening!

Anyway you might look at it, that is a lot of leakage when you consider whatever psi one might want to evaluate. A builder is logically charged with the responsibility of how much and how to control the leakage paths. Sorry for the brief hijack of this otherwise very interesting thread.

Regards to All,
HB2
Dissident

Last edited by Dissident; 06-26-2019 at 01:40 PM. Reason: clean up sloppy writing
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Old 07-04-2019, 08:01 AM   #1307
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Default Re: H-I-J '76 Nova re-fit.

Everyone have a great Independance Day!
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Old 07-09-2019, 08:53 PM   #1308
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Default Re: H-I-J '76 Nova re-fit.

Many changes happening and lots of work happening.








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Old 07-13-2019, 08:26 PM   #1309
Dave Gantz
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Default Re: H-I-J '76 Nova re-fit.

Tie that hair back!
She may not be running the machine; it's just a great habit to be in.

Last edited by Dave Gantz; 07-13-2019 at 08:31 PM.
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Old 07-14-2019, 05:12 PM   #1310
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Default Re: H-I-J '76 Nova re-fit.

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Tie that hair back!
She may not be running the machine; it's just a great habit to be in.
She doesn't have safety glasses on either. She also rode in the back of a pick-up last week. Can't tell these crazy kids anything these days!
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