MG Sports Cars

engine swaps and other performance upgrades, plus "factory" and Costello V8s

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BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5720 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: 340 upgrade
Posted by: BlownMGB-V8
Date: March 11, 2019 09:50PM

Presumably, the 2014/2015 Caddy CTS-V used the Aisin AA80E. It may have had a controller that was separate from the PCM, or it may not. I'm still trying to get info about that. So there is a very faint glimmer of hope, but it wanes as time passes.

Jim


Jim Stabe
Jim Stabe
San Diego, Ca
(701 posts)

Registered:
02/28/2009 10:01AM

Main British Car:
1966 MGB Roadster 350 LT1 Chevy

authors avatar
Re: 340 upgrade
Posted by: Jim Stabe
Date: March 12, 2019 02:18AM

You might want to contact the guy at the bottom of this article
[gearsmagazine.com]


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5720 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: 340 upgrade
Posted by: BlownMGB-V8
Date: March 12, 2019 03:52PM

Nothing there to indicate anything has been done with the Aisin. But I do have a couple feelers out. One guy on the ctsvowners forum tells me it was used in the cts sport, not the v, and presumably that was behind an LS but he hasn't confirmed it. I still have no info on what controller was used or at present, what year. Which is critical because they used several different transmissions so I need the exact application and preferably the part number.

IF (and it's still a pretty big if) it was used behind a V8 with a GM controller it's just barely possible that 1) it could be a separate module and, 2) it may be able to interface with an earlier GM ecu like the '411. Apparently they are at least tuning the Caddy ecm with HPTuners software so at least some possibilities may exist for use if it does turn out to be a unitary pcm but it's not a large community like Silverado owners so how refined that is would be anybody's guess. Since the owners of a car with the Aisin installed is a much smaller subset, again the odds diminish, but we'll see. I'll keep the hardware for awhile yet.

Then of course there's the question as to whether the same valve body was used. That may have to be changed out (assuming that is even possible) to match the caddy tcm.

In the meantime, I need to get the car back on the road. I need to buy wheels because the fronts are too big and have too much backspacing, new tires too, front and rear. I've decided to go with a 15" rim on the front which will mount a 245 wide tire, a little narrower than I'm used to but it should work fine. It will give me about a 3" smaller diameter which will really help out my front suspension and clearance issues. I'm considering a 7" or 7-1/2" wide wheel which is a bit narrower than their recommended range but it will still fit fine and will be a little lighter and the sidewall will do a better job of protecting the rim. I ran 265's on a 7" rim for many years and never had an issue:
[www.tirerack.com]

This would give the car a California rake. Or, I could stay with the 17 size and use the Toyo Proxes R1R in a 245/35-17 but it's a 1" bigger tire and still requires the wheel purchase, I'm not getting around that. So I think the 15's are going to get the nod.

On the rear I guess I'll stay with the Sumitomo. The UTOG is a little lower, 160 instead of 200 so you'd think it might be a little stickier, but it isn't rated as high as the Hankook in the reviews so maybe not.
[www.tirerack.com]

Jim


Scott68B
Scott Costanzo
Columbus, Ohio
(537 posts)

Registered:
10/25/2007 11:30AM

Main British Car:
1968 MGB GM 5.3 LS4 V8

authors avatar
Re: 340 upgrade
Posted by: Scott68B
Date: March 12, 2019 07:25PM

Quote:
Established comm with the '411 and used TunerPro to go in and remove a bunch of items that won't be needed, mostly having to do with transmission, cats, DBW, and a few other things that don't apply to the typical V8 MGB. Basically just getting rid of the clutter. There remains a somewhat daunting number of tuning parameters and I didn't want to be confused by extra entries that don't do anything. Will that work? Can I just delete the flags and parameters that way? Not to mention tables and settings? Who knows. I'll find out when I go to start it up. If it doesn't I can revert to an earlier file before I removed all that.

I've been getting my documentation together too, found pages that look to be out of a Helms shop manual for an '01 Camaro so that should be handy. And today I went out and found the pages from where I did my injector dead-time testing which should give me everything I need for those.

In TunerPro I was even able to go in and change the VIN# to the one from my MGB. There are 4 left over spaces at the end so I think I may put MGB and a space at the beginning, at least see if it will let me do that, then start putting in the injector info. I also want to see what one of the other '411s has for ignition settings and compare them since I'll be running the Silverado coil packs. (This OS and tune are for a Camaro)

Jim are you referring to removing the XDF parameters or the actual data in the calibration? If it's the latter I wouldn't do that. Only the items needed for stand alone use are enabled in that bin. It is a manual bin as well so the auto stuff you see there is included in the factory calibration for a manual car. Also, you may want to be careful changing the VIN. I'm not 100% on this but I suspect there is a certain pattern that needs to be in that constant. I'd suggest keeping it as is until you've got the motor running and try changing it then if you feel you have to. Making changes like this before you get it running could introduce unknown changes to the calibration which doesn't help troubleshooting if you're having difficulties.

Check this link for wiring if you haven't already. [lt1swap.com]

The diagrams show you what pins you need an those that don't matter. I used the diagrams on this site with success.

I'm anxious to see your progress on this!

Scott


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5720 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: 340 upgrade
Posted by: BlownMGB-V8
Date: March 12, 2019 09:57PM

Thanks Scott, I much appreciate the advice. This is a once-through on the tune, after I have what I want I'll go create a duplicate without all the deletions and then when run time comes around I'll try both just to see what it does. Chances are good it's just as you suspect and the file with the deletions either won't run or runs very poorly, but I will learn a few things by trying it. At the very least I'll become more familiar with the tuning parameters that matter the most. I really don't expect the trimmed down one to work and I probably won't try it first. Most likely I will load them each in different controllers so I can just switch over the plugs when the time comes to try it. I'm just curious if they allowed for trimming the chaff out of the tuning interface and if so, how deeply that goes. Does lack of a parameter default to a zero? In many cases if it does that'd work just fine. For others it probably won't.

I followed your suggestions and printed out what look to me like some very good documents on the wiring for the 2001 Camaro. That's what I'll use unless you see any reason not to, as I think it matches the pinout you linked to but I will be double checking as I go. They came off the same site but are more detailed. The fact that it works with your car is very important to me.

I expect to start splicing wires this week but have mechanical bits to make so that takes time too. Mounting block for the GM 4 wire IAC, mount the trigger ring and pickup, and brackets for the Silverado coils at the very least, plus a mount for the MAP sensor.

I see the LS firing order is not the same as earlier GM (SBC and SBB). I'll be looking for a setting for that, there very well may be one. Otherwise I may have to change the wire assignments accordingly for injectors and coils.

Jim



Edited 1 time(s). Last edit at 03/12/2019 10:02PM by BlownMGB-V8.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5720 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: 340 upgrade
Posted by: BlownMGB-V8
Date: March 18, 2019 05:13PM

I've learned that the Caddy CTS V-Sport (1 step below the CTS-V, has a 3.4L turbo V6 @ 425hp) Used both the Aisin 8 speed and a standalone TCM. The TCM may be just a glorified solenoid driver however, I don't have that info yet, it's:

ACDELCO 24266725

It MAY run on a CAN bus link to the pcm, or it could be a more complex connection. It may or may not be able to work with the earlier 2001 '411 controller. Two pcm's are listed:

ACDELCO 12692067 and,
ACDELCO 12676230

Both of which appear to be used in V8 applications.

However, tuning of these newer pcm's could prove to be a challenge, and they are more expensive to acquire.

Jim


MG four six eight
Bill Jacobson
Wa state
(290 posts)

Registered:
10/23/2007 02:15AM

Main British Car:
73 MGB Buick 215, Eaton/GM supercharger

Re: 340 upgrade
Posted by: MG four six eight
Date: March 18, 2019 11:44PM

Jim,
The Asian 8 speed TCM contains VIN specific software data and has final say in transmission function/operation based on inputs from other modules via the high speed data line. It does contain processors and logic, so it is more then just a solenoid driver. It may be possible for it to function as a stand alone controller if communication is lost on the high speed network with other modules. However most likely it would limit transmission functions to a "limp or fail safe mode", as it relies on input from the ECM for RPM to control the shift points.

Unfortunately it probably won't communicate with the older 411 controllers. The TCM uses a high speed data rate of 500kbit while the older ECM uses 10.4Kbit class 2 communications.

Bill

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