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Guest Message by DevFuse
 

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How can I tell how old this ECU is?


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5 replies to this topic

#1 hooziewhatsit

hooziewhatsit

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Posted 07 March 2005 - 04:18 PM

Hey all,

Yesterday I was given a complete EA82T engine. (ECU, custom shortened wiring harness, two distys, 8 injectors (some look cracked))

The guy thought it came out of a '95 soob, but he doesn't know much at all about them.

Is there any way to tell what year the ECU came from? I know there was a difference in the turbo ECUs from '87 forward IIRC.

The motor has 84 cast in the top of it, and the heads are Gen 1 :-(
It also won't turn over all the way, since it's been sitting outside mostly covered. I took off the valve covers, and found surface rust on one of the cam bumps.

Would I be safe in assuming that this is an older gen ECU, without the fuel cut problems, but also without the newer fuel management stuff?

Once I get it torn apart and see the state of the internals, I may try to swap it into my SPFI 88 GL.

Thanks

#2 archemitis

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Posted 07 March 2005 - 06:26 PM

is it a vac operated distributor? is it a flapper maf? is so its the olderstyle, with the vac operated knock sensor, and no fuel cut. afaik.

#3 hooziewhatsit

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Posted 07 March 2005 - 07:41 PM

is it a vac operated distributor? is it a flapper maf? is so its the olderstyle, with the vac operated knock sensor, and no fuel cut. afaik.


yea, it looks like it has a vacuum advance disty, with four wires going to it.

The maf has the big barn door flapper on it.

Thanks for the confirmation. I thought it was the older type.

off to do research on the other differences between the two.. unless someone beats me to it.

#4 archemitis

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Posted 07 March 2005 - 07:48 PM

i've heard roomers of putting up to 50percent bigger injectors in the rail, and tuning the maf up to meet the fuel demands of higher boost. but without a fuel cut, youd have to push past 14? to max out the stock stuff.

#5 hooziewhatsit

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Posted 07 March 2005 - 08:17 PM

interesting....

I've been contemplating trying to find an EJxx and doing that swap. When I went over to see this engine, since he thought it was from a '95, I was hoping it was an EJxx.

Well, good news or bad news, this one will drop in much easier, but have less 'normal' horsepower, although we do know what WJM did with his.

I really wouldn't mind having more power than I do in my current ride, and this free engine really helped get the overall cost down :-)

#6 archemitis

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Posted 07 March 2005 - 10:16 PM

ya, wjms dyno numbers would make any sane person think twice about doing an ej swap. i mean its nothing compared to an ej22 turboed, but its still nice to see its possible to get good numbers out of these little crap boxes =]




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