Rebuilding 2.2T Engine
 

I recently acquired a numbers matching 1971 911T that has been siting for quite some time. It has Weber carburetors on it. Unfortunately when I found it, there was sitting water in the the carbs and subsequently I can see deteriorated carb gaskets/ water traces in three of the cylinder heads. Engine does turn by hand. Although I don't have much experience with these motors, I'm imagining a full teardown and rebuild coming soon.

From reading the forums, 10 years ago conventional wisdom seemed to be take the engine out and put a piece of glass on top and use it as a table. Then put in a 3.0-.2 liter. Poking I can't find anything even close to reasonable for sub 10k? eBay asking 20-30k?!?

So now looking at having it rebuild. More reading and the affordable/ hot rod route sounds something like higher compression JE pistons with slight overbore and 'E' cams.

Any idea what I should expect to pay to have it rebuilt like this assuming it's straight forward? Anything else I should consider besides this route?

With the water in the motor the carbs are probably junk.
The cylinders are cast iron so the water has rusted the inside piston to the cylinder
You have to open the case because water dissolved the magnesium at the bottom seam
A set of zeniths will get you running. Open a set of JE cylinders/pistons
I have low mileage heads and rods from a 70 t
Bruce

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Bruce

I was in the same boat with my 70T when I got it. PO took it to a shop that pulled the aircleaner housing and then rolled the car outside. Contrary to the advice above, most of my engine was usable but the only way to know is a teardown. Mine was seized and some of it came apart with with a block of wood and a sledge :eek:. I did end up replacing a couple cylinders due to pitting but the engine had low miles (~50k) and everything else was still well in spec. New rings and 2 eBay cylinders of the correct height group and I was in business. YMMV. Also the valve guides were toast, but that's a different issue.


This is an important note, I had some pitting on the sump plate sealing surface that needed filling. Easy job on my case.

Thanks for the tips. Hadn't thought about the magnesium.

There's a lot of inspecting you can do without tearing the engine down. Remove the carbs, spark plugs, and look into the cylinders with a borescope (buy a $20 one that works with your cell phone on Amazon). Drain the oil and see if there's water in it. No way of knowing other than looking.

I've got the plugs out, intake and carbs off, upper valve covers off. Will take a peak with borescope.

Was planning to clean out cylinders with a small vacuum tube best as possible. Oil the cylinders, hand crank, then proceed with a leak down test if everything seems relatively clear.