Torque spec? Knock sensor.

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Mar 11, 2008 | 08:03 PM

enkeivette

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Melting Slicks

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Torque spec? Knock sensor.

What is the torque spec for a knock sensor on a roller engine? Also which year C4s had roller lifters?

Mar 12, 2008 | 02:02 AM

staugur

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From: port charlotte fl

14ft/lbs,late '86 onwards.

Mar 12, 2008 | 05:47 AM

Can86Z51

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From: Toronto(Don Mills) Ontario

Quote:

Originally Posted by staugur

14ft/lbs,late '86 onwards.

No factory 86 Vettes(late or not) had roller lifters/cams - those started only with 87's and up!

Mar 12, 2008 | 11:20 AM

staugur

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From: port charlotte fl

Quote:

Originally Posted by Can86Z51

No factory 86 Vettes(late or not) had roller lifters/cams - those started only with 87's and up!

Well mines an '87 with a build date of october '86 and it's a full roller motor so explain that.

Mar 12, 2008 | 11:57 AM

CFI-EFI

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From: The Top of Utah

Quote:

Originally Posted by staugur

Well mines an '87 with a build date of october '86 and it's a full roller motor so explain that.

You already explained it. Your car isn't a late '86. As you said, it is an '87. Also, no L98s are "a full roller motor". "Full" in the vernacular includes rocker arms. It didn't happen.

RACE ON!!!

Mar 12, 2008 | 12:27 PM

Can86Z51

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From: Toronto(Don Mills) Ontario

Quote:

Originally Posted by CFI-EFI

You already explained it. Your car isn't a late '86. As you said, it is an '87. Also, no L98s are "a full roller motor". "Full" in the vernacular includes rocker arms. It didn't happen.

RACE ON!!!

Exactly!! Sheesh!!

Mar 12, 2008 | 02:56 PM

enkeivette

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Melting Slicks

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Quote:

Originally Posted by CFI-EFI

You already explained it. Your car isn't a late '86. As you said, it is an '87. Also, no L98s are "a full roller motor". "Full" in the vernacular includes rocker arms. It didn't happen.

RACE ON!!!

I didn't even think about asking which blocks were full roller motors. Thanks! Good thing I didn't buy the sensor yesterday.

And the 87 knock sensor should have the same thread pattern as the 85 and 86 sensors right? Basically I'm installing a knock sensor/ knocklite in my 80-85 carbureted block. But I have roller rockers and the retrofit roller lifters, so I want a sensor designed for the roller noise profile. I'm afraid to run more than 28 degrees of advance with boost till I get the knocklite installed.

Last edited by enkeivette; Mar 12, 2008 at 03:00 PM.

Mar 12, 2008 | 09:12 PM

CFI-EFI

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From: The Top of Utah

Quote:

Originally Posted by torqvette

I didn't even think about asking which blocks were full roller motors.

As pointed out above... NONE. There have been no full roller L98 motors. The knock sensors screw into the block water jacket drain plug holes. I doubt they have changed from the 3/8" NPT since the SBC was born in 1955.

RACE ON!!!