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Fabbed intake found. by sourmash
Started on: 06-01-2018 08:52 PM
Replies: 3 (264 views)
Last post by: pmbrunelle on 06-02-2018 12:10 AM
sourmash
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Report this Post06-01-2018 08:52 PM Click Here to See the Profile for sourmashClick Here to Email sourmashSend a Private Message to sourmashEdit/Delete MessageReply w/QuoteDirect Link to This Post
This was found in a junkyard. Was this a common modification to get around the choke point in the stock intake neck?

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Report this Post06-01-2018 09:30 PM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by sourmash:

This was found in a junkyard. Was this a common modification to get around the choke point in the stock intake neck?


I think that's a "one off" mod by someone to do what you are suggesting.
The distributor would likely interfere with the TB in that position.

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sourmash
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Report this Post06-01-2018 09:45 PM Click Here to See the Profile for sourmashClick Here to Email sourmashSend a Private Message to sourmashEdit/Delete MessageReply w/QuoteDirect Link to This Post
Right. You're probably right. The car was converted to turbo and had coil packs. Hmm. Wonder where the trigger is. Didn't think of to look.

[This message has been edited by sourmash (edited 06-01-2018).]

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pmbrunelle
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Report this Post06-02-2018 12:10 AM Click Here to See the Profile for pmbrunelleClick Here to Email pmbrunelleSend a Private Message to pmbrunelleEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by sourmash:

Right. You're probably right. The car was converted to turbo and had coil packs. Hmm. Wonder where the trigger is. Didn't think of to look.



The successors of the 2.8 have crankshaft triggers. In the middle of the crankshaft is a notched wheel. Penetrating the right side of the engine block is a variable reluctance sensor.

These VR sensors would typically interface with the coil-pack module; this presented an "emulated distributor" to the ECU, which I guess eased GM's transition from distributors to coil packs.

There's a good chance your junkyard car had one of these setups.

Eventually, GM outgrew the "emulated distributor" paradigm, and the crankshaft sensor was wired directly to the ECU.
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