How to identify an EA82 MY by its engine number ?

discopotato03 · Post by **discopotato03** » Wed Apr 22, 2009 9:33 pm

Hi all , I'm looking for 1987 MPFI NA cams and need to know if there are listings of engine numbers , 4 plug ECU NA ones , sold in 1987 .

Or if any has an original car of this engine spec and MY can I have your engine number (say minus the last two numbers) to use as reference .
A wrecker has a couple of dead MPFI NA engines for parts but has no idea of which MY cars they came out of .

Remember must be hot wire AFM type 87 NA MPFI era , cheers A .

SCOOBIDOO · Post by **SCOOBIDOO** » Thu Apr 23, 2009 8:12 am

There is a way to id the month and the year of both block and heads. You dont use the engine number to do this. Obviously you have not seen either i.d yet. Once you work on an ea 82 engine in all aspects...you actually see the i.d area,s....there are 6 generations or heads on the ea,all with there individual difference,s ...look and learn

steptoe · Post by **steptoe** » Thu Apr 23, 2009 11:47 am

in my 1987 model L tagged as made in November 87, complianced 03.1988 , each block is cast as made in October 87. Eng # up to 550000 by then. Given the efficiency of the manufacturers you looking for an engine from one month, look for a casting date the previous month

discopotato03 · Post by **discopotato03** » Thu Apr 23, 2009 12:53 pm

For the exercise I dug out a spare pair of engine casings and I noticed a circular raised section with 8/85 cast into it , the other half is 9/85 .

I went all over a pair of turbo heads I have here but there's not really anything the screams out a month and year . They both have 7 JAPAN on the inlet port side and EA82 on the exhaust port side , above that on a sort of lattice patterned part of the casting is 5 and 8 on one head and 5 and 14 on the other . There also a 7 in the covered section above where the cam boxes bolt on .

Still learning .

Gannon · Post by **Gannon** » Thu Apr 23, 2009 4:37 pm

Why do you need specifically 87 model cams?

I didnt think that there were many 4 plug MPFI's sold in 87 (as the first half of the year was still 3 plug technology)

I have only ever seen 88 and 89 MPFI touring wagons, and if there were any MPFI's made after this date, they would only be non turbo vortex's.

I have a set of 89 MPFI cams that i was gonna save for a regrind, but hit me with an offer, you might change my mind

discopotato03 · Post by **discopotato03** » Thu Apr 23, 2009 10:01 pm

Well the reason being that they have the cam profiles that I want to use and I can identify them by their markings - for 87 build ones anyway .

I have been sniffing around in downloaded Factory WSMs and the profile cams I want may not have the same markings in different model years .
For example the 87 MPFI NA's have one ring in the B position an two in the C position .
The 88 NA Spider XT's had only one ring in the B and C positions for the same valve timing .
The 89 L US WSM shows SPFI and Turbo cam specs and though they had an MPFI NA they don't quote the valve timing numbers for their camshafts .

Its highly likely that the 88 and 89 NA EFI cams are the same as the 87 ones but no one can explain why the 88/89 ones have a different part number to the 87's .

I have a pair of turbo cams I'm not using so will get back on the offer .

Cheers A .

steptoe · Post by **steptoe** » Fri Apr 24, 2009 12:38 am

86's only have marking groove A or B

discopotato03 · Post by **discopotato03** » Fri Apr 24, 2009 10:16 am

The US factory WSM (89L Series) also only shows A and B positions where they are actually A and C positions , in that case they show Single point fuel injection and MPFI Turbo using carby and turbo spec profiles .
I reckon because in both cases the B position has no ID rings they left it out and only used the 0 or 1 which tells those two profiles apart .

So I'll have to get cams with 1 ring in the B posi and 2 in the C posi , and have them checked on a cam doctor machine .

Cheers A .