Searched and found plenty about swapping 722.4 to .3 transmissions, but how about backdating my 85 californias engine with a 617 TD from an 83? Are there flywheel/starter issues ill have to overcome? Will the exhaust downpipe connect the same? Or is this a nice and easy bolt in...

The Cali engines had a different intake and exhaust manifolds, starter, downtube, a different tach pickup, the trap Cat and a different air filter. If you swap the engine and keep the above referenced items you should be just fine. One big issue is the tach pickup which is in the intermediate plate which would need to be swapped - unfortunately this requires pulling the flywheel.

If you go with all the 83 accessories you should be fine, except for the tach.

You can use the Cali starter in a Federal setup, but not vice versa.

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Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica

X2 what mach4 said.

If you still have the Kali Intake/Exhaust manifolds and trap Oxidizer. This would be a good time to use the 83 Manifolds, Down pipe, and Turbo.

When I swapped my 85 for the earlier system, made a huge difference at the higher altitudes.

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Thanks Mach4 and Charmalu.

I have both cars complete and plan to pull the engine/trans from both, split them on the ground and then mate the 85 722.4 to the 83 engine for installation into the 85 calif car. The 85 car has a nicer body/interior and a working trans but low compression while the 83 is a bit more rough with a strong engine and something wrong with the 722.3.

Would installing the 85 cars flywheel to the 83 engine, then bolting on the tach pickup be a straighforard swap over? If it works that way and is the major obstacle, that would be great news!

Should I also plan to port over the 83s exhaust system onto the 85 car for a bolt in experience?

Any other obstacles come to mind in my plan?

Thanks again in advance.

I'm almost positive the flywheels are the same. What's different is the intermediate plate that has the port for the tach VR sensor (reads the teeth off the flywheel) to remove the intermediate plate you've got to remove the flywheel. If you do that make absolutely sure you mark the relative position of the flywheel and crank so you can put them back correctly as they are balanced as a group....most likely - some were some weren't, so just be safe. The earlier engines all had the tach pickup on the harmonic balancer and used a tach amp while the Cali engines used the EGR controller for tach (so don't throw away your EGR controller if you do an EGR delete - actually that's not 100% true as there are threads that show how to wire it direct, but that's a different story). The tach module in the cluster is also different between the years, so keep those straight.



Sorry about the bad picture, it was taken before I cleaned up my donor engine.

You may not need to port over the entire exhaust system, but that might be the simplest working plan.

__________________
Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica

Tip #1. Remove the 6 13mm bolts that bolt the Torque Convertor to the FW BEFORE removing the eng/trans.

Remove the black plastic cover on the bell housing. I use a Screw Driver through the grate to rotate the TC to line up the bolts.
They are in 3 groups of 2 each.

I learned the hard way first time I removed the eng/trans from the 85.

To remove the FW Bolts, you will need a 12 point 12mm Socket.
It is recommended to replace the FW Bolts, but there is a spect on the stretch of the bolts in the FSM. If with in spect, then can be used. They are a torque to yield bolt.

Don`t know if it as critical with the auto trans as the manual one, but with the manual I replace them ea time. I keep the old one`s just incase they become NLA some day.

Your swap should be pretty much plug and play.

If you come across a set of 78/79 intake exhaust manifolds from a W116 300SD, they are pre EGR.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I understand much better now. Thanks for the tips and pic of the intermediate plate with tach pickup.

Hopefully I can dig in withe cherrypicker this weekend!

Tom

You will need the exhaust downpipe from the older car. Dont know if it will bolt on the cali car underneath the front passenger seat or if you are going to need the whole exhaust system from the older car.

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'85 300D Cal 280,000 miles
'14 GLK 350 60000 miles