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Old 10-18-2006, 01:45 AM   #1
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Default Gen III M62 */C swap

I spent about a half hour searching but to no avail.
How easy, if possible, would the swap be?
Will I notice performance gains?
Is it worth it?

Also, what I'm planning to do is buy a used, semi-high mileage (131k miles) m62, rebuild it if necessary, and put it on my car. Realistic? For 100 bucks, it'* sounds like a good deal
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Old 10-18-2006, 02:48 AM   #2
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I'll do the best I can bit Will should chime in to give the specifics. First you will also need the throttle body and the MAF sensor fot the GEN 3 M62 also. I don't know how your PCM is going to like these changes also. Few have made this swap a complete sucess. (actually WIllwren is the only one I know of to have made a complete success of it). Let him be your guide young grasshopper and he will show you the way.
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Old 10-18-2006, 09:10 AM   #3
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Bill won't chime in..

He'll sit back and laugh a little.

Search on Willwren and "3 Bonnevilles" that was the post where he move the appendage over to the G3 and the G3 went on the car.

For leading edge stuff..simply search Willwren and cruise through the 10,000 posts returned
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Old 10-18-2006, 10:02 AM   #4
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Until we find out how well the Jet works in the 92, it may not ever really work.

Two members have tried it besides me, and both are still fighting issues. Both were 92'*. John Wikoff is one of them.

MOST of the issues are with regards to the PCM/MAF. You don't want to rely on the AFC controller for day-to-day living. The EGR stovepipes are also different sizes, and you MUST insure a leak-free connection. The throttle body, being larger is quite a squeeze with respect to the throttle cable connections as well. You MIGHT have to tweak that. Other minor issues are a different bolt length for one of the SC bolts.....damn. I'll have to go back and dig around. Fuel pressure may end up being an issue as well. I personally wouldn't even consider it until you do all the other 'normal' stuff. Porting your EM'* and a cat, etc.

The long and short of it is that there is risk, and your car (and trans) better be in EXCELLENT condition before you start. And don't do it if you don't have something else to drive.
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Old 10-18-2006, 10:55 AM   #5
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I wouldn't say my attempt was a complete failure. I didn't see any problem with the throttle linkage, I did have to adjust the cruise cable (it was too tight), the EGR did leak a little so I put a gasket on it, got the shorter bolt for the corner closest to the driver, and I have my AFC set at 110 and creep it up a little near the top and left the FPR stock. If I ever find I can set the AFC at a fixed number (no signal rising), I may ditch the AFC and get an AFPR.
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Old 10-18-2006, 01:34 PM   #6
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Wow, maybe this is a project I don't want to get into. Willie spoke of it pretty casually, so I didn't think there was much involved. Oh well, maybe during the summer, when I can get a junker honda or something...

Also, question, since this is from a parts car, I can probably grab the PCM to go with it, along with the TB with all the sensors. Will swapping the PCM make this a smoother swap? Also, do I have to swap out the whole EGR, or just the pipe running up to the TB?
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Old 10-18-2006, 01:47 PM   #7
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Neither on the EGR. You keep your digital EGR and pipe.

Swapping the PCM would be quite involved. The Gen3 came on a car that had OBD1/2. OBD1 compliant, with OBD2 codes, and an OBD2 ALDL. It'* not plug/play into your car. You'll need the entire wiring harness, and FSM'* from both cars to pull that one off.

As long as you understand the risks, I've made my point. We'll give you the help we can, but the PCM is an unknown, and you WILL shorten the life of your trans in the process. But that'* true for any modification.

Your EM'* should be a BIG thing on the list in the preparation. I gaurantee yours are cracked. They should be repaired and ported before you contineu.
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Old 10-18-2006, 02:06 PM   #8
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Quote:
Originally Posted by willwren
and you WILL shorten the life of your trans in the process
Oh, I've started a savings account just for a tranny rebuild when I first got the car
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Old 10-18-2006, 02:55 PM   #9
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The only sensor you would want to get is the 94/95 L67 MAF.
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