Forged internals for a EA81?

Matt · Post by **Matt** » Fri Dec 14, 2007 6:43 pm

I chasing everyones thoughts on forged internals for a EA81? Are they worth it or should i just use standard ones? or is better to go to 1600 pistons? Does anyone have any for sale?

It is to go into my Brumby with Dual port heads, lumpy cam, 32/36 Weber, 2" exhaust.

I'm not interested in upgrading to an EJ i like my trusty EA81 because it is simple and no timing belts, etc to worry about (not that i don't know how to do them).

Suby Wan Kenobi · Post by **Suby Wan Kenobi** » Fri Dec 14, 2007 8:43 pm

BYB01 built up a fairly hot EA81 some years ago, he would be the best person to ask as most just upgrade to a later model engine.

90brumby · Post by **90brumby** » Sat Dec 15, 2007 12:48 am

i believe the pistons are the same in a ea81 and a ea71 but i wouldnt worry bout forged internals unless ur planin on boostin it

brumbyrunner · Post by **brumbyrunner** » Sat Dec 15, 2007 6:17 am

Have you considered the EA81T (turbo version)?
I doube they have forged internals but they are a good strong lttle motor with better bottom-end power than the EA82T.

Matt · Post by **Matt** » Sat Dec 15, 2007 11:36 am

I thought about the EA81T but they are hard to come by and i don't like the lag... (not that they have much) I may be wrong but somewhere i read that you could but 1600 pistons to raise the compression? I might have to go to standard pistons.....

steptoe · Post by **steptoe** » Mon Dec 17, 2007 9:27 pm

lag ?? what's that ? Something I was expecting to experience with my EA82T GLTA but nah, not yet (why I selected the smaller up pipe outlet diameter of 39mm).

Still think it may not be too hard to turbo a std EA81 using 82 crossover pipe. Surely the structure of a 3 bearing mains is going to be the limiting factor before toughened internals ? I agree with your like for simplicitEA 81 and gotta say I appreciate the quieter EA82T to my rattler EA81

tommo · Post by **tommo** » Mon Dec 17, 2007 9:39 pm

That's sounding like an awesome brumby matt, shame we never got around to comparing utes. :P
good luck with it ay!

dfoyl · Post by **dfoyl** » Thu Dec 20, 2007 7:27 pm

>> may be wrong but somewhere i read that you could but 1600 pistons to raise the compression?

That's what I've read also - should raise c/r to 9.1:1 from memory.

Dean.

littlewhiteute · Post by **littlewhiteute** » Thu Dec 20, 2007 7:48 pm

So if 1800 pistons are flat top with near zero deck height, do 1600 pistons have a dome?