TPI Questions

[George M. Dailey]

Hi Dan, what were you able to set the timing too without getting excessive
detonation? I could only getabout 6 degrees with my egr plugged.

GMD


At 06:10 AM 8/12/97 -0700, you wrote:
>I'm lost, for a performance engine, do you want egr or not ?  When I built
>my tpi 350, I pulled the egr valve and stuck a blanking plate over the hole
>instead, oh, I also put the little metal plates in the manifold gaskets
>where the egr is meant to breathe through.  Was this a mistake (I don't care
>about economy, only power)? 
>
>Dan     dzorde at geocities.com
>>> Thanks for the help.
>>> 
>>> This P/N thing is confusing.  I have the JTR book (and a bunch others)
>>and
>>> most say not to ground this pin.
>>> If I remember correctly something to do with idle and deceleration. 
>>Should
>>> I be concerned????
>>> I think a lot of this is tied to an automatic transmission, not manual. 
>>Is
>>> this true?
>>
>>I left mine open..sortta.  I'm using Aluminum Corvette heads that do not
>>have the internal EGR passages in combination with a '86 VIN "F" TPI
>>manifold.
>>
>>The EGR valve is still present and connected, but doesn't actually do
>>anything since there isn't a supply of exhaust gas to the valve.
>>
>>Grounding the EGR feedback wire will set off the SES light (it simulates
>>the EGR being stuck in the open position)
>>
>>Leaving it disconnected will also occasionally set off the SES light (there
>>are a few cases where the ECM will command the EGR to actuate, then look to
>>see what happened.)  Fortunately, temps down here are high enough that this
>>doesn't happen often.  (been about 4 months since the last time the code
>>went off) It will also clear itself within a few minutes of driving.
>>
>>Someday I'll have an EGR flange welded to one of the exhaust headers to
>>supply external EGR.. but it's a low priority.
>>
>>Curt Martin (cmartin at america.com)
>>Ormond Beach, FL
>>http://www.america.com/~cmartin
>>'87 350 TPI Camaro.. (used to be a 2.8L V6 :)
>>
>
>
>
George M. Dailey
gmd at tecinfo.com