4T80E/Turbo-S/C... TIME FOR A NEW THREAD? - Page 23 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 11-20-2007, 06:52 AM   #221
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Quote:
Originally Posted by radomirthegreat
Did you remote-start the car from a local restroom?
lmfao!
sounds like the small gremlins have reared their heads...been there
i gotta finish welding a few more, plus machine the rears for the 90* exit
these so deserve to be polished...
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from what i've found it apears that the 03+ IMS CAN be retrofited to the older 80e'* i've got to stop by my buddies stealership and see if i can lay my hands on moe info.
from the diagrams i have it'* an additional linkage rod on the bottom of the selector shaft (may be as simple as drilling a hole, or it'* a special selector shaft) to a slide switch reminicent of older gm ign switches that apears to bolt to the edge of the valvebody by two of the valvebody bolts.

i am grabbing a scrapyard manifold pressure switch i wanna see if i can rewire the molded in circuits to function exaclty like the 65e setup...(it'* cheap & worth a shot lol)

nice work on the exhaust...waiting on the sound vid x231
i'll shoot you an email when i have more time...
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Old 11-20-2007, 08:22 AM   #222
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Amazing Jeff.

The main sensor ground is that one back by the oil filter adapter. There'* also a splice from that one ground to the rest in the harness behind the supercharger. Right where the bolt was in the M90 for the alternator bracket.

The high throttle position is probably why it won't catch and start each time. (Recently had that on a N*). At nearly 100% the PCM is reading it as a flood condition, by putting the pedal to the floor...it turns off the injectors.

That is..if you didn't change most of that during the build up.

Awesome to hear it'* running!! Congrats...it was a lot of work and I'm sure it was a great feeling.
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Old 11-20-2007, 01:27 PM   #223
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Quote:
Originally Posted by Turbocharged400sbc

from what i've found it apears that the 03+ IMS CAN be retrofited to the older 80e'* i've got to stop by my buddies stealership and see if i can lay my hands on moe info.
from the diagrams i have it'* an additional linkage rod on the bottom of the selector shaft (may be as simple as drilling a hole, or it'* a special selector shaft) to a slide switch reminicent of older gm ign switches that apears to bolt to the edge of the valvebody by two of the valvebody bolts.

i am grabbing a scrapyard manifold pressure switch i wanna see if i can rewire the molded in circuits to function exaclty like the 65e setup...(it'* cheap & worth a shot lol)

nice work on the exhaust...waiting on the sound vid x231
i'll shoot you an email when i have more time...
I assume you are using an '03 transmission and that'* why you are having issues? My '99 model -80e is wired exactly like the -65e, or so the schematic drawing appear...
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Old 11-20-2007, 01:32 PM   #224
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Quote:
Originally Posted by BillBoost37
Amazing Jeff.

The main sensor ground is that one back by the oil filter adapter. There'* also a splice from that one ground to the rest in the harness behind the supercharger. Right where the bolt was in the M90 for the alternator bracket. .
I checked that before I left lst night... it'* bolted down. I need to check the splice... hey wait, when I moved the pcm, there was one wire that was too short, I cut it and I bet I never spliced it back.... thta might be it.

Quote:
Originally Posted by BillBoost37
The high throttle position is probably why it won't catch and start each time. (Recently had that on a N*). At nearly 100% the PCM is reading it as a flood condition, by putting the pedal to the floor...it turns off the injectors. .
I thought it was in clear-flood mode, but it still doesn't start good when I disconnected the TPS and it showed 0%. I put a new balancer on it, so I'm sure it needs a CASE learn. I just need to get it to idle so I can do the learn procedure on it.

I have ot figure out how to block the pcv passages to the crankcase now that the plates have holes in them... I might just do an old heat-riser trick and use a piece of aluminum can with silicone on both sides. It is thicker than the gasket, so it will make a little impression in the wood... or the best way would be to tap in a freeze plug if it is a std size hole....
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Old 11-20-2007, 02:21 PM   #225
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While the splice is worth checking, I'd doubt it. They are crimped very well. Then there'* layers of tape...the loom.. you get the picture.

I like the memory of the wire... anyone that'* ever been in that type of situation before knows how the revelation occurs...

You don't suppose it'* running a little crazy because of all the various things you've got strapped to it and a bit of tuning is in order?
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Old 11-20-2007, 02:28 PM   #226
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AHHHHHH! Where is the audio clip!
Congrats, this has been a fascinating project to watch. Well done!

Adam
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Old 11-20-2007, 02:36 PM   #227
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Quote:
Originally Posted by BillBoost37
While the splice is worth checking, I'd doubt it. They are crimped very well. Then there'* layers of tape...the loom.. you get the picture.

I like the memory of the wire... anyone that'* ever been in that type of situation before knows how the revelation occurs...

You don't suppose it'* running a little crazy because of all the various things you've got strapped to it and a bit of tuning is in order?
It'* definately the pcv passages creating a huge internal vac leak... I'm fixing that first.
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Old 11-20-2007, 02:37 PM   #228
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Good that you got that figured out so quickly. Sucks that so much has to come apart. (Or is that why you mentioned the gooey sandwich fix?)
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Old 11-20-2007, 03:28 PM   #229
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dude.you have to get some audio/video clips asap.it looks like willwren has some competition.LOL.
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Old 11-20-2007, 03:31 PM   #230
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Quote:
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dude.you have to get some audio/video clips asap.it looks like willwren has some competition.LOL.
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