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Old 06-18-2013, 03:55 PM   #1
Gamble_WRX
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Default Anyone running V7 pistons in an EJ205?

So im toying with the idea of putting the V7 pistons in my Ej205, and was wondering whos already done it. i dont know if i can get away with honing the block without splitting it. i really dont wanna go through the trouble of doing main bearings. the car is not my DD, however it may be for the winter, and i already blew ringlands on my last wrx and dont wanna go through that again.

just looking for information wondering if i cant get away with using a blade hone or something to keep away from the rod, and just take out factory piston, do a few passes with a hone and reinstall v7 pistons.

thanks for any help!
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Old 06-18-2013, 04:22 PM   #2
fastnoypi
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it would be a cleaner job if you split the block then hone and hot tank.
The dirty way..you could remove your rod caps, pull the rods out and stuff a rag in each cylinder to catch the crap left from the hone.
how much power are you planning and are you keeping the 205 rods?
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Old 06-18-2013, 04:29 PM   #3
Gamble_WRX
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I was planning a 20G at 25psi. should put me around 400 whp. i know the factory rods will be fine. i just dont want to go through the hassle of gauging and changing the bearings is all. its a PITA, and your chances of spinning a bearing go up by like 600%. im only running the engine for a year, if i cant get away with honeing it with the shortblock still together, ill either just drop in the V7s, and score the hell outta the cylinder walls, or leave the cast junk, and tune it retarded rich.

i used to be all into this stuff, but im putting it together on a budget, which we all know is never a good start.

Reliabilty isnt a big deal for me right now. im gonna be pushing close to 400 whp and babying the stock trans.
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Old 06-18-2013, 08:12 PM   #4
Concillian
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I wouldn't be so confident the 205 rods would be fine. I just tuned a JDM swap that swapped because a rod poked a hole in the original 205 block... I think 25 psi on EJ205 rods would indeed be a Gamble_WRX.
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Old 06-18-2013, 08:52 PM   #5
Fierysun
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I've been running around 26psi on a stock LB ej205 for the last 7 months and it's my DD. Putting out 375whp on e85 (full time). So far so good. No issues.
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Old 06-18-2013, 09:20 PM   #6
Gamble_WRX
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its all in the tune. you need to detonate to break a rod like that. GeneralTJI ran like 470 through a Holset on a stock bottom end. it failed eventually, but i think he rode on the stock block for almost 2 years like that.
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Old 06-18-2013, 09:31 PM   #7
Concillian
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Well, you need to detonate to break a ringland on a 2.0L too... and you did that.
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Old 06-19-2013, 02:52 AM   #8
Gamble_WRX
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Quote:
Originally Posted by Concillian View Post
Well, you need to detonate to break a ringland on a 2.0L too... and you did that.
I sure did, my injector failed. Nothing to do with my tune, although that was my first assumtion as well.
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