did some digging after my origonal post on dual knock sens

[vortecfiero]

http://www.syty.net/phpBB2/viewtopic.php?t=22232&highlight=

It should work
the resistance of the two CPI knock sens in parallal is the same as 1 of the stock syty sens

both ecms look for a voltage that is between .63 and 4.16 (big + - )
also the CPI comes two ways

1 is pipe threaded the same as the stock syty sens
the other has a standard 3/8th thread (I've been using two of these)

just hook them up in parallel

I do realize that the two engines ks setups are prob calibrated completely differently but I'm giong to mess with it a bit (carefully)

 

[Tydriver]

Nice info VortecF.

 

[TurboTony]

You might want to talk to Nolan about the dual KS.

Seems to me he had major false knock issues back in the day on synoma when he first did the conversion. He just went back to a single sensor to cure it.

Maybe if you use an L-35 memcal to filter it properly it would work, dunno.

Tony

 

[vortecfiero]

You might want to talk to Nolan about the dual KS.

Seems to me he had major false knock issues back in the day on synoma when he first did the conversion. He just went back to a single sensor to cure it.

Maybe if you use an L-35 memcal to filter it properly it would work, dunno.

Tony

I read somewhere (here?) that effective knock sensor reaction is like sex and real estate it's about location (HA)

(I'm also pretty sure that Nolan would have considered this)

Using the L35 memcal is another query I'm about to post on the "Borg Chip"/memcal

 

[92Ty#1524]

I'm using L35 block and heads. Should I also be using an L35 memcal for proper knock filtering ??

 

[10secTy]

Been there done that. I had the dual knock sensors on the L35 with the Syclone memcal. I had false knock every where only thing that fixed it was getting a Syclone knock sensor and installing it in the factory spot. boom problem solved.

Nolan

 

[vortec@work]

I plan on using (trying) the L35 carrier (identical to the sy/ty carriers) with the L35 ESC chips and an "adjusted" $58 prom

 

[turbodig]

I plan on using (trying) the L35 carrier (identical to the sy/ty carriers) with the L35 ESC chips and an "adjusted" $58 prom

I'd go the other way, personally...

Take the SyTy memcal, pull the ESC off it (6 pins), and then put the
L35 ESC in its place.

This way, you keep the calpak resistors from the Sy in place, and just
change the ESC cal.

FWIW, I suspect that the ESCs for the balance shaft motors were quite
different, if that's where you were getting your "donor" ESC from. I'm
told that the ESC cals for a particular app were full powertrain cals,
including all the accessories + pulleys. A '93-94 vinatge L35 would
probably not block a lot of the noise components that the Sy ESC did.

The ESC for the '92 Sy was supposedly different; better. You might
scout around for different numbered ESCs to see if that works better
in your application.

IMO, an extra knock sensor is a waste. If it's really knocking, the single
one will pick it up.


Later,

Dig

 

[vortecfiero]

I will try several combinations and will post datamaster results
just what I need more stuff to play with (I can hardly wait !)