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Guest Message by DevFuse
 

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excuse my ignorance... what cars came with the ea82 spfi pistons?


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13 replies to this topic

#1 scrap487

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Posted 10 October 2006 - 11:24 AM

I'm not sure on trim level or year and I'm looking for some to put in the ea81 block I'm rebuilding and I dont think the parts store will be able to help me very much if I just say I need ea82 spfi pistons... the searching i've done hasnt given me much other than what i already know, that they will give me about a 9.5:1 cr.

Thanks!

Trevor

#2 Jerry DeMoss

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Posted 10 October 2006 - 11:53 AM

Or just use ea71 pistons.The cars that came as spfi started in 87.That is the cutoff year as some are carbed and some spfi.Carbed models went away in '88 on the ea82.I believe they continued on until '94 in the loyale models.Good luck.

#3 scrap487

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Posted 10 October 2006 - 12:04 PM

Or just use ea71 pistons.The cars that came as spfi started in 87.That is the cutoff year as some are carbed and some spfi.Carbed models went away in '88 on the ea82.I believe they continued on until '94 in the loyale models.Good luck.


ok cool thanks... thought about ea71 pistons but it looks like the cr only comes out at only 8.885:1 or something like that? also read the oil ring lands arent very strong?

#4 Numbchux

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Posted 10 October 2006 - 12:37 PM

your best bet, is to ask for 91-94 loyale pistons. the only motor in the loyale (with the exception of the rare 90 loyale RS turbo) was SPFI. if you want to get even more picky, in '91/'92, it was the only 1.8L subaru made...until they came out with the impreza in '93

it was available in all GL/DL N/A EA82s (not hatches or brats) in '88 and '89 (maybe '87 too, but I'm not sure on that one).

I wonder if the XT MPFI N/A pistons would work....

#5 scrap487

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Posted 10 October 2006 - 12:46 PM

your best bet, is to ask for 91-94 loyale pistons. the only motor in the loyale (with the exception of the rare 90 loyale RS turbo) was SPFI. if you want to get even more picky, in '91/'92, it was the only 1.8L subaru made...until they came out with the impreza in '93

it was available in all GL/DL N/A EA82s (not hatches or brats) in '88 and '89 (maybe '87 too, but I'm not sure on that one).

I wonder if the XT MPFI N/A pistons would work....


maybe... what kinda advantage would that give? I'm sure I could have my local parts store bring some in to look at without having to commit to buying.

#6 GeneralDisorder

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Posted 10 October 2006 - 01:57 PM

I wonder if the XT MPFI N/A pistons would work....


Those are the same as the SPFI pistons - both are 9.5:1

The EA71 pistons don't give a lot of comp. increase, and the ring lands are thinner. Plus they are more difficult to find than SPFI ones....

GD

#7 idosubaru

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Posted 10 October 2006 - 02:31 PM

was SPFI. if you want to get even more picky, in '91/'92, it was the only 1.8L subaru made.

the 1991 XT was MPFI 1.8 liter.

#8 Numbchux

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Posted 10 October 2006 - 06:33 PM

the 1991 XT was MPFI 1.8 liter.


oh yea, forgot about the XT overlap.....

but it appears those would work anyway, were there turbo XTs in '91?

#9 Snowman

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Posted 10 October 2006 - 06:44 PM

Sorry to be a nitpicker, but I believe SPFI was available in 2wd EA82s starting in 85, and 4wd EA82s starting in 88 (maybe some of them had it in 87, but I've only seen carbs on 87's). California may have had it earlier on the 4wds as well.

But, to be sure, you could order pistons for a 94 loyale and you'd definitely get the right parts.

#10 GeneralDisorder

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Posted 10 October 2006 - 08:41 PM

Sorry to be a nitpicker, but I believe SPFI was available in 2wd EA82s starting in 85, and 4wd EA82s starting in 88 (maybe some of them had it in 87, but I've only seen carbs on 87's). California may have had it earlier on the 4wds as well.

But, to be sure, you could order pistons for a 94 loyale and you'd definitely get the right parts.


SPFI was introduced in 86 actually. 85 2WD's (GL's and GL-10's) were MPFI non-turbo. DL's were always carbed till late 87 when carbs were done away with.

GD

#11 Snowman

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Posted 11 October 2006 - 12:02 AM

I learn something new every day! (Of course, I forget two old things every day....)

Thanks for the correction GD.

#12 daeron

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Posted 11 October 2006 - 04:39 AM

this is a thorough discussion of the relevant questions, so ill ask it for enlightenment as much as for posterity with the search feature.. what about ER27 or xt6 pistons? what c/r would they yield?

#13 mikeshoup

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Posted 11 October 2006 - 07:37 AM

ER27 pistons are the same as EA82 SPFI pistons.

#14 daeron

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Posted 11 October 2006 - 10:26 PM

thats about what i thought, but since i didnt know i couldnt just say so. thanks.




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