Jump to content
Ultimate Subaru Message Board

EA81 turbo to EA81 spfi w/ ea81t cam


El Presidente
 Share

Recommended Posts

I'm getting a couple ea81 turbos soon, - one with a bad bottom end, the other is assumed running condition - and I'm considering using the good ea81t in a ea82 wagon with SPFI. I don't have the ecu's or the MPFI wiring. Here's what I'm thinking:

 

-EA81T block w stock turbo cam

-EA82T Heads shaved .025", maybe not( I'm aware of the change in valve geometry)

-EA82 Pistons(compression bump)

-EA82 SPFI (Already in the car)

 

Ok so I've dropped ea81's into ea82 cars before with spfi, but I have no experience with the turbo ea81s. I'm not gonna use the MPFI injectors, but they'll stay to plug the injector holes.

 

Once I get the compression up, my big question is the EA81 cam...will it be worthwhile?

Gutless(more gutless than a stock ea81 under ea82 spfi)? I'm not interested in building an ea81 turbo, but I have these parts and I wouldn't mind a running engine.

 

I couldn't find any info in going from ea81 turbo-->ea81 non-turbo w/ spfi or weber, any input is appreciated! TIA

 

Josh

 

Link to comment
Share on other sites

  On 11/2/2015 at 4:16 PM, carfreak85 said:

There is almost no question that you will be much happier with an EJ swap.  Sell those EA81T parts to me.

If I was doing a swap than yes, I'd go EJ, but I was just trying to get a running engine out of some free parts. As it turns out, I got two na ea81 heads from a buddy so now I really only need the good ea81 short block. I'll take pictures this weekend of everything else to sell off. Send me a PM if you'd like firsties on anything.

 

Still curious though, has anyone ever used ea81 mpfi heads under spfi or a carb? What about the ea81t cam, any idea how it does on a non boosted engine?

 

Josh 

Link to comment
Share on other sites

I'm sure someone, somewhere has used EA81T heads in a N/A application, but not a high enough number for it to be considered tried-and-true.

 

I'm not sure if there are even different part numbers for the EA81T camshaft but if Subaru did it properly, the EA81T cam would not make for a very powerful N/A engine.

Link to comment
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
 Share

×
×
  • Create New...