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EJ25 year/version shortblock differences


Andy_Mac

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Since it seems to be coming up a fair bit right now I figured i’d get the ball rolling with pics of the block i’ve got sitting at home. 

 

Anyone with different block castings chuck up some pics of your details so we can get a bit of a comparison going on. 

 

Pretty sure this is an older block, maybe v10 era since it has the nitrated crank.

704 casting with a ~8.2mm wall

 

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42167020311_923dfb1d80_b.jpg

 

41446363424_097d077caa_b.jpg

 

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Source:

http://www.rs25.com/forums/f5/t229348-ej-blocks-pictoral-guide.html

 


EJ25

302 Casting
YMM Unknown
EJ25 (99.50mm bore)
Open deck

Notable Features
Thin cylinder stabilizers
High water jacket floor
Threaded case vent nipple
Striated underside of block
 

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IMG_20170911_180851388_HDR.jpg

wol_error.gif This image has been resized. Click this bar to view the full image. The original image is sized 640x360.

IMG_20170911_180845288.jpg

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IMG_20170911_180841928.jpg

wol_error.gif This image has been resized. Click this bar to view the full image. The original image is sized 640x360.

IMG_20170911_180812295.jpg

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IMG_20170911_180805316_HDR.jpg

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IMG_20170911_180753593.jpg

311/312 Casting
311/312 Casting Album
Y/M/M unknown
EJ25 (99.5 bore)
Open deck

Notable Features
THICK fore and aft cylinder stablizers
High floor in water jacket
Pressed case vent nipple
Striated surfaces on underside of block

b6220c98-5e3d-4765-bc83-012689224994.jpg

f9527454-c17c-40ed-b7a9-2b5a9408919c.jpg

IMG_20170225_113407476_HDR.jpg

704 Casting
704 Album
STI Replacement Block
B25CR and B25CR casting marks on bottom of case
EJ25 (99.5mm bore)
Semi-closed deck

Notable Features
DEEP pockets in water jacket
Extra ribbing on LH top side
Dual, pressed case vents

IMG_20170226_140544216.jpg

IMG_20170226_140838353.jpg

IMG_20170226_140809073.jpg

903 Casting
903 Album
MY07 Legacy
EJ25 (99.5mm bore)
Open deck

Notable Features
Thin fore and aft cylinder stabilizing pins
Low floor in water jacket casting
Threaded nipple for case vent

45de3b2e-9e02-44a0-b0f0-97a62a05561e.jpg

IMG_20170225_115600214.jpg

IMG_20170225_115535973.jpg

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