HOrnbrod

Exactly what I was thinking - but all the hard work is done. And looks like it was done pretty well.

Me too. Very nice. Anyone in MI close enough to take a peek?

Damn, you didn't say ignition coil. :yes: I had one of those too, put it on new, it lasted a week then died. Since then I've had an Accel coil and it's been good for years. I don't think that's your problem, but throw a different coil on for test purposes.

I saw it on the firewall. Was this on your old 91 when running? If not, bypass it if you can easily.

Changing the CPS should not throw a code 11. Never has for me. Check for the 5V reference signal (w. IGN ON) on pin 3 of the CPS connector near the fuel rail. Use pin 2 for your meter ground.

91-95 (OBD1) flex plates are compatible, 96 (OBD2) was different. The 96 flex plate won't play with the OBD1 ECU. But if it's firing up and running, rough as it is, I think you have a timing problem. Are all your sensors from the old 91 OBD1 engine? BTW, have you checked for fault codes using the ignition key sequence?

Check your lift like this: http://comancheclub.com/topic/11098-how-to-measure-ride-hight/

How much lift? Is your axle centered now?

93-98 Grand Cherokees.

You can start by swapping in Jeep ZJ V8 front end parts. Tie rod, drag link, sway bar, and track bar are all beefier and bolt right in with no modifications. The 93-98 ZJ steering gear boxes are a quicker ratio and are also bolt-in.

I know the drive shafts from older 1/2TChevy pickups will work. Probably Dodge trucks too. They have the same 27-count spline slip yokes and 1310 series u-joints. I'm using a GM slip yoke now. They may have to be shortened but for sure they will work. I'm looking for a decent aluminum GM shaft now at least 60" long.

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8933002665 is the old AMC number. Chryco changed them when they took over and dumped the 89 prefix. Block Castings: 87-88 53002665 53005535 53008405 8933002665 89-90 53002665 53005535 8933002665 893300266 91-97 53008405 53010341 53020569 5302569 98-06 53010327-AB 53010328-AB 53010341 53010449 53010449-AA 53020514 53020515 53020569

The block casting number for 1987-90 4.0 engines should be 53005535 which equates to 8933002665. .

Ah, okay - missed that Jim. My bad. :cheers:

Can you see THIS? It would look much better using the late model XJ front clip and a lower cowl hood. Lose the wheel flares too and it would be super.

:dunno: The head's correct. Somehow the "X" got left off the engine code. Read the block casting number when you get a chance.

Huh? The block casting number will never match the cylinder head casting number. Head casting numbers are 4-digits, blocks are eight digits. Or do you mean make sure they translate to the same year range?

^^ Don't know why Jim posted the above in this thread. :hmm: Anyhow, the engine code MX = 242 MPI (4.0L MPFI, 86-01, Jeep ONLY) . Engine code M = 304 2 bbl Low Compression (71-74, Jeep ONLY). So unless you have a carbed 304 something is way wrong. Here's the complete list of AMC engine codes: 1968-2001: Someone at AMC decided to simplify things, or maybe the U.S. Government decided for them since engines now had to be qualified for emissions by type and size? In any case, all models used the same codes for the same engines. Some codes were used for more than one engine. Year ranges are given for code use. VIN and engine code numbers are different! This can be confusing. The 4.0 has an engine code of MX, but there are three di fferent VIN codes (M, L, S). The earliest VIN code usually matches the engine code, later versions of the same engine may have different VIN codes but engine code usually remains the same. A- 258 1 bbl (71-79) B- 258 1 bbl Low Compression (71-74, Jeep ONLY) B- 151 2 bbl (80-83, GM 2.5L) B- 126 Diesel (85-87, Renault 2.1L, Jeep XJ ONLY) C- 258 2 bbl (4.2L, 76-89) E- 232 1 bbl (70-79) F- 232 1 bbl Low Compression (71-74, Jeep ONLY) F- 145 Diesel (81-86, Jeep ONLY) G- 232 2 bbl (70-74) G- 121 2 bbl (77-79) H- 290 2 bbl (68-69) H- 304 2 bbl (70-79) J- 199 1 bbl (68-69) L- 232 1 or 2 bbl (68-69) M- 304 2 bbl Low Compression (71-74, Jeep ONLY) MX- 242 MPI (4.0L MPFI, 86-01, Jeep ONLY) N- 290 4 bbl (68-69) N- 360 2 bbl (5.9L, 70-91) P- 360 4 bbl (70-77) R- 134 1 bbl (70, F-head, Jeep ONLY) S- 343 2 bbl (68-69) T- 134 1 bbl Low Compression (70, F-head, Jeep ONLY) U- 150 (84-01, AMC 2.5L, Jeep & Eagle ONLY) W- 390 4 bbl (68-69) W- 173 2 bbl (84-86, GM 2.8L V6, Jeep XJ ONLY) X- 390 (70) Y- 390 (70 Machine) Y- 318 MPI (93-96, Chrysler 5.2L, Jeep Grand Cherokee ONLY) Z- 343 4 bbl (68-69) Z- 401 (71-77)

:clapping: :rotfl2:

Those wheels are 5 x 4.5" pattern.

Do you also have boggarts and henkies?

If you used and understood how to use Cruisers tips, you would never have mentioned electrical gremlins. No such thing mate.

Copper will probably rust up there too Ben. :(