Knock Retard

[D-Con]

Don't the Termintors have knock-retard based on the knock sensors? When I read about people hearing knock with their car, or other detonation problems I wonder why there isn't KR by the computer?

BTW I'm a newb with Fords and just familliar with the GM stuff.

 

[Juruense]

Terminators do not have knock sensors.

 

[D-Con]

aha, I read the code in the directions for my Predator. It must be a generic glossary.

Seems sorta dumb not to have a knock sensor in a supercharged car..:dw:

Even the SC 3800 cars have them. :shrug:

 

[Juruense]

I believe the technical reason is that knock sensors use acoustics and the s/c engine has too much ambient noise for them to work or something like that.

Truth probably is that Ford cheaped out and then made the stock tune pig rich to be safe.

 

[Dana]

The story goes that the supercharger was too noisy for the knock sensors to function correctly.

 

[dredg9]

yeah i thought it was kind of weird when i first heard that they didnt have them. It would be nice if they did for added protective. I have them on my regal and it is nice to know how far i can push my setup, how much timing i can run,etc. without knock.

 

[Dana]

There is an aftermarket system that is getting good reviews. Check on Modfords

 

[D-Con]

The story goes that the supercharger was too noisy for the knock sensors to function correctly.

Gotta be a story, the SC 3800 is an eaton on a v-6 bolted to a transaxle. That almost has to be noisier than a terminator.

Damn, here I am my newest car ever and first Ford; already back to criticising Ford's "better idea" :wf: :uh oh:

 

[SnakeBit]

"Quality is Job 1"

Do you know about the oil pressure gauge yet? That's another good story.

 

[D-Con]

"Quality is Job 1"

Do you know about the oil pressure gauge yet? That's another good story.

Do tell!

 

[ShelbyGuy]

remember that this car's engine package was cobbled together at the last minute. the entire supercharger subsystem is an afterthought.

 

[coild]

remember that this car's engine package was cobbled together at the last minute. the entire supercharger subsystem is an afterthought.

How true!
Read the book 'Iron Fist, Lead Foot'. It tells all.

 

[John at J&S]

The aftermarket lives to improve on or add to what the OEM's did.

 

[slo-poc]

I thought the car pulls timing at certain intake temps...iat's 1 or 2's can't remember what i was told....

just asking if there is any truth to this???

 

[Dana]

Yes as IAT2's climb over 100 degrees, the PCU starts to pull timing, slowly at first but much more aggressively as it nears 150 degrees. This can be manipulated by the person that tunes the car though.

 

[oldmodman]

The oil pressure guage isn't.

It's an idiot guage.

Below a fixed pressure it read zero, above that point it reads normal. Just like the oil light (idiot light) going on after your engine is screaming for mercy.

Here's a link to the posts about the J&S Electronics knock retard system.

http://www.modularfords.com/forums/showthread.php?t=92292

 

[TrickStang37]

Don't the Termintors have knock-retard based on the knock sensors? When I read about people hearing knock with their car, or other detonation problems I wonder why there isn't KR by the computer?

BTW I'm a newb with Fords and just familliar with the GM stuff.

i remember in my brothers 383 built LT1 9c1 (impala clone) we dumbed down the knock sensor with resistors because the sound of the exhaust from the cam was enough to set it off and kill timing.

 

[slo-poc]

Yes as IAT2's climb over 100 degrees, the PCU starts to pull timing, slowly at first but much more aggressively as it nears 150 degrees. This can be manipulated by the person that tunes the car though.

Thank you.....

 

[John at J&S]

TrickStang37:

I drew this schematic of how to make a desensitizer for a GM knock sensor, and posted it on LS1.com a few years ago.

http://www.jandssafeguard.com/test/images/Desensitizer.gif

There was also a commercially available desensitizer called "The Knockout Box".

 

[TriPodRacing]

The Cobra and Lightning both have knock sensors.

They are turned off in the stock tune for noise as stated by everyone else.