Subaru EJ25 Engine Assembly Time Lapse Video using Manley Forged piston and Rods. All Blue printing and Balancing has been done prior to final assembly. www.pmautoworks.com Instagram: @pm_autoworks
I’ve watched this video about 10x most satisfying things in the world!!! I’m in the process of building my own block I sent it out to get closed decked!!!
Quality work. Probably worth pointing out the rings were gapped / ground prior to piston assembly to the right tolerance. Getting the rings right is super important on these engines along with using updated head-gaskets.
@@PMAutoworkswould love to know your gap and clearances for comparison with other people’s builds and why you chose them. More in depth would be great video.
Im killing myself over this build im doing watching this video was like being tapped on the shoulder by the subi angels saying "be one with the Ej my son"
I’ve got a type ra block with a bad rod bearing in my garage, I’m trying to get motivation to build it, and now I’ve got the bug, 5 videos in and I’ve got a parts list. Just need to find a video that details the exact sizes of ring gap, and other clearances that is ideal for 450whp with a stock type ra block. Might even try stock rods and pistons. Just replace bearings and rings. Good rods and pistons are so damn expensive.
are the rod bearings for those manly H-beams one-size fits all for a new nitride crank? tryna figure out if plastigauge and buying size A, B, C, D bearings are needed(kinda like hondas). Thanks man, great video!
can you post a video on how to install the shortblock into the long block please, that’ll be super helpful since that’s what i’m currently trying to do
Great video, but aren't you ment to check the size of the oil control ring in the bore and trim ring gap if required, before putting onto the piston? Or was this done before video. 👌👍
Lol! Glad you noticed. We searched long and hard for the perfect set of pliers to build these engines. DM us on @pmautoworks instagram and we'll try and check for you at work.
Great video, but 500hp and not close decking a EJ257 is pushing it. Rated at 400hp max for semi closed here in the uk. Why not close deck it? Anyway great build 👌
500hp and no close deck is 100% pushing it. If it was a build for a client we would closed the deck but since it was our own shop car we decided to test the limits of the block. As of today, the car has seen multiple track days and is still running! Thanks for watching. 🙂
the engine block you are assembling is forged ??? ... the block is new or can the old one be used ... ?? how much is the price ... I have made modifications and I have put a lot of after market things on my car and I have modified it in force and thrust and thrust 385hp has but after that I am using a lot of oil .. they say I need a forged block...
The EJ255 / EJ257 are essentially the exact same block (apart from casting the EJ257 designation in etc.) along with the factory crank and rods, The difference on the STi (EJ257) is the piston dish and the heads. So the EJ255 heads can be fitted to an EJ257 and vice versa but you must use the right headgaskets. Factory pistons are hypereutectic ones on both from factory, but it looks as if he's using aftermarket forged ones here. With 500HP being the aim for this short-block it would be pretty much certain as the stock internals would suffer over 420HP or so, and ring-land failures a real probability. (Which can still happen with a bad tune / rings on forged pistons too btw, but not as easily). The cylinders are likely overbored to standard. Standard is - EJ257 = 99.5mm Bore x 79mm Stroke.
Is that a new block you're installing on? I have ringland failure and am wondering if I can save money rebuilding rather than buying a new stage 1 shortblock.
It was an old block that we got machined and rebuilt. You can save money by rebuilding yourself but if you don't have the tools i'd recommend just buying a built block.
@@PMAutoworks So the cost of tools necessary for the rebuild outweigh the difference in price between a built short block and a rebuild kit with a machined block?
@@mikealmiracle4834 yes, some of the tools needed are torque wrenches, micrometers, feeler gauges, bore gauges, ring compressor, rod bolt stretch gauge.. it adds up quick
@@mareksumguy1887 May not hurt anything, but yes, clean oil should be used on the cylinder walls and piston skirts, and nothing on the rings, as the aim is to get the cylinder broken in / the rings to bed in and locate in the cylinder.
blobeye_dylann A properly preloaded bolt won't stretch with the cyclic loads. It needs to be adequately tightened to a load greater than the demand of the engine, and measuring bolt stretch is the most accurate way to make sure it's reached.
Although it wouldn't have been a bad idea, for our horse power goals we didn't need to close the deck. As of today the engine is still running strong after seeing countless track days.
