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2nd Gen Engine FAQ - Turbos - MPG - Engine Builds - Engine Swaps - Engine Management


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  • I Donated
Unless you get the fancy NGK plugs. Platinum Iridium NGKs are a bit more but supposedly are good for life!

 

no plugs are good for life

-broknindarkagain

My Current Project - Click Here

COME AND TAKE IT

"The only thing necessary for the triumph of evil is for good men to do nothing."

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How about this for the Franken motor thread

Ej257 bottom end( shortblock)

& the heads from a 25d motor?

I've been running this build for 14k now & short of being boosted this is a really nice improvement over a stock motor.

I've tried 87 oct , no knock. With 89 & 93 u actually see an improvement in throttle response & lower end power.

When I did the math w/ an online compression calculator, it came out to like 12.48:1

Hope this is useful info...

S.O.N

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  • I Donated
How about this for the Franken motor thread

Ej257 bottom end( shortblock)

& the heads from a 25d motor?

I've been running this build for 14k now & short of being boosted this is a really nice improvement over a stock motor.

I've tried 87 oct , no knock. With 89 & 93 u actually see an improvement in throttle response & lower end power.

When I did the math w/ an online compression calculator, it came out to like 12.48:1

Hope this is useful info...

S.O.N

 

What size head gaskets are you running? Stock STI ej257 gaskets?

Edited by broknindarkagain

-broknindarkagain

My Current Project - Click Here

COME AND TAKE IT

"The only thing necessary for the triumph of evil is for good men to do nothing."

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Brok, I'm on the fence right now for buying a salvaged Sube off of the CoPart auction.

 

What do you know of the EJ25 thats in the 3rd Gen Lego's (BE,BH)

if it is a 5MT would that be a direct swap to a 2nd Gen BD with a 5MT?

 

I'm slightly torn on just buying a Rolled over 3.0 H6 and a Saab radiator...

 

The whole build is going on the premise that I have complete cars to work with and not spend a year trying to hunt down "do dahs" from both cars to make it work. Also found some bad-A black leather in a interior that just makes my really want to buy it more...

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Ej251 is SOHC...and will bolt right in. You might have to swap over a few sensors but for the most part I think its like doing the EJ22 swap. Just make sure it has MAF. I don't remember if dot does or not

-broknindarkagain

My Current Project - Click Here

COME AND TAKE IT

"The only thing necessary for the triumph of evil is for good men to do nothing."

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  • 2 months later...

Brok, is it possible to swap the 05' WRX STI EJ257 heads onto the EJ25D block? I know that there is sometime wrong with one of the heads on my motor and there is a guy that parted out his STI blob eye's STI and has the intake, heads, and exhaust that is willing to sell cheap.

 

If I rebuild the heads on my EJ25D it's going even cash for that super slow motor to finally sound ok....cathartic to say the least. It's bad enough that I already have go drop the engine just to get to the heads on this boxer motor.

Here are some pics of his heads that went to a Cosworth EJ257 that was blown..

 

http://i231.photobucket.com/albums/ee134/Rubenjc111/41308229.jpg

http://i231.photobucket.com/albums/ee134/Rubenjc111/8BCEE0EE.jpg

http://i231.photobucket.com/albums/ee134/Rubenjc111/ACB38308.jpg

Also was selling the exhaust:

http://i231.photobucket.com/albums/ee134/Rubenjc111/B287A0AF.jpg

Edited by TexasLegacy2.5GT
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  • I Donated
The heads will bolt up to the engine...however I don't know if the 25D intake will fit on those heads or not....and I don't know if the 257 intake has the needed stuff to let your 25D sensors and vacuum lines bolt up.

-broknindarkagain

My Current Project - Click Here

COME AND TAKE IT

"The only thing necessary for the triumph of evil is for good men to do nothing."

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  • 2 months later...

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