I had an invidia n1 on my bugeye and I loved it! It was a tough choice deciding if I wanted the Tomei or the invidia for the sti but I’m so happy with it
I have a catless downpipe and Cobb uppipe waiting to be put on. Once I get the money for a tune and a few other things that’ll be the thing I do next. After that it’s going to be a lot of suspension work and cosmetics
@@boostfeed_ Doing things in steps in my opinion is great not only financially but allows one to see how each upgrade changed things. Are you running a stock block?
@@boostfeed_ Hoping your stock block and pistons make it with the longevity you totally deserve! Not to be discouraging in any way would like to pass on information acquired by research on the internet. Are the Pistons Just Weak? Weak? ... No Brittle? ... Absolutely While detonation is what damages the pistons, it's important to know that the EJ20 (EJ207 / EJ205), EJ25 (EJ255 / EJ257), and FA20 all have brittle pistons due to Subaru's material and design choices. The pistons are cast hypereutectic aluminum-silicon (Al-Si) alloy; a very common material choice for modern engines. Well proven engines like the 2JZGTE, 4G63, SR20DET, RB26DETT, LSX, K-Series, and others all use Al-Si alloys. However, Al-Si alloys can vary depending on the percentage of silicon in the material. Subaru has opted for a "hypereutectic" alloy which is a high-silicon (12+%) mix. This makes the piston have extremely low thermal expansion, and allows Subaru to run an extremely tight piston-to-bore clearance. The high-silicon content also makes the piston considerably stronger than aluminum itself. For example, a 9% silicon (by wt.) alloy has a 14% higher yield strength than a 7% silicon alloy. This strength comes at a cost: fracturing. When you take a sledgehammer and hit a steel hood, the steel simply deforms under the pressure of the hammer strike, leaving a dent. When you take the same sledgehammer and hit a window, the block shatters the window. That is because the window material reacts to the strike by fracturing rather than deforming. When you add silicon to aluminum it acts more and more like the window glass. Detonation energy ironically enough, acts like the hammer.
@@boosTiMon that was some of the best information I’ve ever read about these motors. That makes a lot of sense for why these EJ’s have a reputation of those ring lands failing. I’ve heard of that for so long but never really knew the reasoning why it happens to these motors but not others. Thanks for elaborating!
Makes me miss my Tomei exhaust but it was just too loud for me lol. Went to a Invidia N1 and couldn’t be happier!
I had an invidia n1 on my bugeye and I loved it! It was a tough choice deciding if I wanted the Tomei or the invidia for the sti but I’m so happy with it
Mod list and future plans for other mods? 🩵✨
I have a catless downpipe and Cobb uppipe waiting to be put on. Once I get the money for a tune and a few other things that’ll be the thing I do next. After that it’s going to be a lot of suspension work and cosmetics
@@boostfeed_ Doing things in steps in my opinion is great not only financially but allows one to see how each upgrade changed things. Are you running a stock block?
@@boosTiMon yea stock block. And with my financial situation right now I hope it stays that way for a while
@@boostfeed_ Hoping your stock block and pistons make it with the longevity you totally deserve!
Not to be discouraging in any way would like to pass on information acquired by research on the internet.
Are the Pistons Just Weak?
Weak? ... No
Brittle? ... Absolutely
While detonation is what damages the pistons, it's important to know that the EJ20 (EJ207 / EJ205), EJ25 (EJ255 / EJ257), and FA20 all have brittle pistons due to Subaru's material and design choices. The pistons are cast hypereutectic aluminum-silicon (Al-Si) alloy; a very common material choice for modern engines. Well proven engines like the 2JZGTE, 4G63, SR20DET, RB26DETT, LSX, K-Series, and others all use Al-Si alloys.
However, Al-Si alloys can vary depending on the percentage of silicon in the material. Subaru has opted for a "hypereutectic" alloy which is a high-silicon (12+%) mix. This makes the piston have extremely low thermal expansion, and allows Subaru to run an extremely tight piston-to-bore clearance. The high-silicon content also makes the piston considerably stronger than aluminum itself. For example, a 9% silicon (by wt.) alloy has a 14% higher yield strength than a 7% silicon alloy. This strength comes at a cost: fracturing.
When you take a sledgehammer and hit a steel hood, the steel simply deforms under the pressure of the hammer strike, leaving a dent. When you take the same sledgehammer and hit a window, the block shatters the window. That is because the window material reacts to the strike by fracturing rather than deforming. When you add silicon to aluminum it acts more and more like the window glass.
Detonation energy ironically enough, acts like the hammer.
@@boosTiMon that was some of the best information I’ve ever read about these motors. That makes a lot of sense for why these EJ’s have a reputation of those ring lands failing. I’ve heard of that for so long but never really knew the reasoning why it happens to these motors but not others. Thanks for elaborating!