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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-10-2005, 05:00 PM   #31
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Those wires will not work for you. Our'* are much longer than that, I think. Just go to NAPA, and get a set of the Belden 8mm wires. The part number is around here. $30USD, lifetime warranty [just cut them or something once a year and get a replacement].

JMFC: I have never seen an LG3 with the magnavox ignition. Impossible to have the Magnavox. If your ICM is mounted on the top of the engine, behind the main intake plenum, towards the firewall. If your'* is mounted in the location that the pics are in this thread, then you don't have an LG3 . Just trust me on this, when I was looking for a Delco ICM, I explored the LG3 option, but it didn't work out. They aren't compatable.

With the old and new ignition, my car would start in .3 seconds. I timed it, because it was so fast... My throttle response increased dramatically by the ignition upgrade, not to mention the flooding I would sometimes had was eliminated.

For plugs, a lot of member'* use NGK products. There is a thread around here about plug choice. Search for "Tech Talk with NGK" or something like that. It'* a HUGE thread, so you'll know it when you see it.

A tune up will fix your problems, just about guartanteed. I'd do it all at once, and you will notice a HUGE difference, trust me.


-justin
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Old 01-10-2005, 05:32 PM   #32
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Thanks for the info guys. Since it'* cold out, when I start it on fairly cold days (with about 2hours on the block heater) it'* kind of...jumpy when starting. It will sound like it'* there, and then it takes a little longer after that. My tach jumps around too. Nonetheless, it starts everytime. Wetness usually means no starting, which soon should be fixed hopefully.

Tune-up is a term I hear quite often, but what exactly would you say the neccesseties of a tune-up are? I'm just curious what it should include.

So once I upgrade to the Delco, I guess the #14 rapidfire with 0.60mm gap would be the best? (I will also read through that thread that was mentioned.)

thanks
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Old 01-10-2005, 05:42 PM   #33
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Just came across a prototype turbo 3800 photo c.a. 1989 and it clearly shows the Magnavox on a pedestal mount. This is a GN style engine (valve covers) but do not know if it has the early (single band) or late (double band) crank sensor. Would be a bit concerned about heat in that location.

Speaking of that has anyone ever converted a single band to the later dual ? Are the harmonic balancers interchageable ? That, the dual crank sensor, and the later ICM are all I think you would need but might have to swap the MemCal as well, I just have not studied it.

I do not know if Pontiac ever considered this for the Bonneville but Buick was. Anyone know what ignition the 1989 Trans-Am used ?


Note the exhaust from the turbo appears to wrap around the serpentine belt side with a lots of shielding on both the pipes and the front plugs which might also create some problems for the HVAC lines.

This makes sense as you could just cap the rear exhaust manifold and feed the turbo from a outlet on the crossover pipe (have to relocate the O2 sesor there also).
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Old 01-11-2005, 04:08 AM   #34
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Quote:
Originally Posted by opensourceguy
JMFC: I have never seen an LG3 with the magnavox ignition. Impossible to have the Magnavox. If your ICM is mounted on the top of the engine, behind the main intake plenum, towards the firewall. If your'* is mounted in the location that the pics are in this thread, then you don't have an LG3 . Just trust me on this, when I was looking for a Delco ICM, I explored the LG3 option, but it didn't work out. They aren't compatable.
Haynes manual shows (and a quick check of GMPartsDirect confirms) that the LN3 was made with both types of ignition (Magnavox or Delco). There is actually a diagram that shows the plug wire locations for either system, and both are mounted on the top of the firewall side. The man says he'* got a Magnavox, and I believe him. Obviously, it'* not the same model Magnavox that our "c" engines have, because it'* made for the LN3.

Now, alec_b'* '87 would be the old LN3, since they didn't make the "c" 3800 until '88. Therefore, he could upgrade to the Delco system, so long as he could find the ICM from a LN3 (Coils could be from anything). I hope this clears up any confusion on that issue.


Wow, that'* '89 turbo is very interesting! Anyone else notice the STB and upper engine mount? Ahead of it'* time...
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Old 01-11-2005, 10:12 AM   #35
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That Strut Tower Brace was used on every Reatta. Requires a stepped resovoir on the master cyl.
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Old 01-11-2005, 11:17 AM   #36
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Wow thanks for all that info guys. I'm glad i had a lot of people backing up my description. But anyways i've already been curious when the transmission was out and i removed the coils from the module. Remember mine has one big coil (magnavox) and not 3 separate ones. What i found interesting is that instrad of the delco coils that rest on the electrical prongs sticking out from the module, mine has wires coming from the module that are surrounded by what i'm guessing is a water barrier of some sorts. It looks like someone poured it in there. There are 2 wires that then stick about 1 inch out and connect to their respective coil. Very stupid setup if you ask me. So if i'm correct here i will need the 3 single coils from anything and the module from an LN3 (that'* what i have right?) but it would have to be the sealed module not the one like mine with the water stuff in it. Also, how does the module come off of it'* pedastal on the rear of the motor?
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Old 01-11-2005, 12:26 PM   #37
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I *think* the 3300 always used the single ring unit and the same Delco module (D1946A) as the 1987 3.8s. I do not know if the Magnavox was used for that engine series.
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Old 01-11-2005, 12:27 PM   #38
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Sprry i guess mine is the LG3 not the LN3. I always get those confused. Up to '87 it'* LG3 and LN3 is "3800" 88-91? Or is that wrong. Lol someone jsut clear that up one more time for me and i swear i won't ask again.
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Old 01-11-2005, 01:19 PM   #39
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Where can i find these #'* on the module. I'll have to check that out to see which mine actually has.
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Old 01-11-2005, 03:55 PM   #40
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Quote:
Originally Posted by jr's3800
You should have an LG3 3.8 Vin 3 V6.... Yes the Vin C 3800 88-91 is the LN3...
Oops, my bad there. I thought that the LN3 was the "old 3.8". So, substitute LG3 for everything I said about LN3 in my previous posts...
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