Great video! Thanks But the one thing you didn’t touch on and what I was wondering about was. Do you get more oil consumption when using forged pistons vs others?
Great topic and well presented! I don’t mean to contradict but I cheaped out recently,I was always forged piston biased but for my budget gm3800 I’ve been using kb hypers for a while on pump fuel and turbo with a fair amount of boost and on 22psi it’s trapped 136mph and now high boost cut is at 30psi! so far I’m very impressed with the durability of the kb silvolites and they have been subject to many hard lean outs and a few too many over boost situations still no blow by and no oil use but wiseco and cp and few others are all I put in higher hp engines with a block worth more than $100
I should mention as well the engine has been dismantled and inspected several times over the last 2 years with no distortion of the pistons being evident by micrometer
@@FirstPlaceAutoParts yeah thanks I definitely try to! I typically will add an octane booster if I know it’s going to get hard use and higher boost! but on 98ron it’s pretty well behaved even with a stock ecu, I’ve removed the quench on the heads not having access to the ignition timing with the theory of loosing some power to gain some durability but the experimental chambers seem pretty good as it’s even moved the burn shadow on the pistons more to the center and it seems to have not lost the power I was expecting it to
@@bbkr7910 yeah I’d still advise for competition use some forgies but if it’s cheap build and just has to work then they work fine! Not saying that they can’t be raced obviously lol,I’ve been having fuel pump issues last couple of weeks and it’s coming into summer here so I’ve pulled a spring from the gate and until it’s fueling is sorted out I’m on safe 15-22 psi now just in case
Great video. A question... I want to take my stock 4.6 and make it unbreakble. I'm looking at an all-forged bottom end so that, whether I boost the engine or not, i dont have to worry about its durability or longevity. Trick Flow heads and induction parts, with Stainless Works headers, will finish out out the build under the hood. My question is... Am I crazy wanting a forged bottom end for the "peace of mind" quotient?
Your engine's longevity will suffer with forged pistons. This is mentioned in the video at 08:36. Forged positions expand much, much more than cast ones, therefore you need to plan a larger piston-to-cylinder wall gap. The result is additional wear due to piston slap on a COLD engine. Piston slap = wear on the cylinder walls, your compression will decrease gradually over the life of your engine. A daily driver engine with forged postons will wear out much faster. Comments welcome!
@@jean-pierrehilbert2273Well, here's where the difference between 2618 and 4032 alloys comes in. The 2618 indeed expands more and thus needs more clearance at startup with the attendant piston slap, but 4032 doesn't have that problem. I'm looking at Manley's Street Master pistons which are, as far as I've been able to find out, forged from 4032. Still... Thanks for the warning.
Vertex makes an excellent piston. They're the OEM supplier for Husqvarna and KTM motorcycles. In certain outboard drag race classes the cast-style in 2.5 liter is required per rule. Those engines are factory rev-limited to 6800 rpm, but racers will spin Vertex's to 9000+ rpm with edgy tunes for hundreds upon hundreds of passes and I've yet to hear of a broken one. Some get smeared from poor fuel tunes, but I don't know of a broken one.
I'm a retired engine builder machinist. I thought the video was poor. After messing with more than a thousand engines I've learned a few things. Nothing was covered in the video. Like how to prevent a skirt from cracking and even breaking off as an example.
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Why do you thank us for tuning in? We should thank you for giving this information out for free!!
thank you for your time making this
Great video! Deserves way more views and thumbs up!
Thanks RC Stuff, your comments and view is greatly appreciated!
Great video!
Thanks
But the one thing you didn’t touch on and what I was wondering about was.
Do you get more oil consumption when using forged pistons vs others?
Great video. Thank you for clarifying!
Thanks for the great video! Very informative!
Glad it was helpful!
Very nice presentation!
Great topic and well presented! I don’t mean to contradict but I cheaped out recently,I was always forged piston biased but for my budget gm3800 I’ve been using kb hypers for a while on pump fuel and turbo with a fair amount of boost and on 22psi it’s trapped 136mph and now high boost cut is at 30psi! so far I’m very impressed with the durability of the kb silvolites and they have been subject to many hard lean outs and a few too many over boost situations still no blow by and no oil use but wiseco and cp and few others are all I put in higher hp engines with a block worth more than $100
I should mention as well the engine has been dismantled and inspected several times over the last 2 years with no distortion of the pistons being evident by micrometer
Hyper are great pistons... just be sure to stay out of detonation scenario's with them!
@@FirstPlaceAutoParts yeah thanks I definitely try to! I typically will add an octane booster if I know it’s going to get hard use and higher boost! but on 98ron it’s pretty well behaved even with a stock ecu, I’ve removed the quench on the heads not having access to the ignition timing with the theory of loosing some power to gain some durability but the experimental chambers seem pretty good as it’s even moved the burn shadow on the pistons more to the center and it seems to have not lost the power I was expecting it to
Thank you for the comment. Trying to decide which way to go on a 5.9 Magnum build with twins. Think I'm going to use the KB's.
@@bbkr7910 yeah I’d still advise for competition use some forgies but if it’s cheap build and just has to work then they work fine! Not saying that they can’t be raced obviously lol,I’ve been having fuel pump issues last couple of weeks and it’s coming into summer here so I’ve pulled a spring from the gate and until it’s fueling is sorted out I’m on safe 15-22 psi now just in case
And here I am running 16-17psi (turbo) with my hypereuctectic pistons 🌑🚀 lol E85 helps though
😈
Great video. A question...
I want to take my stock 4.6 and make it unbreakble. I'm looking at an all-forged bottom end so that, whether I boost the engine or not, i dont have to worry about its durability or longevity. Trick Flow heads and induction parts, with Stainless Works headers, will finish out out the build under the hood. My question is...
Am I crazy wanting a forged bottom end for the "peace of mind" quotient?
Your engine's longevity will suffer with forged pistons. This is mentioned in the video at 08:36. Forged positions expand much, much more than cast ones, therefore you need to plan a larger piston-to-cylinder wall gap. The result is additional wear due to piston slap on a COLD engine. Piston slap = wear on the cylinder walls, your compression will decrease gradually over the life of your engine. A daily driver engine with forged postons will wear out much faster. Comments welcome!
@@jean-pierrehilbert2273Well, here's where the difference between 2618 and 4032 alloys comes in. The 2618 indeed expands more and thus needs more clearance at startup with the attendant piston slap, but 4032 doesn't have that problem. I'm looking at Manley's Street Master pistons which are, as far as I've been able to find out, forged from 4032. Still...
Thanks for the warning.
seeking a set toyota 3rzfe 10.0:1 in Hypereutectic pistons
Good show!
It’s all about the ring gap. You can use a cast piston with the best ring gap .
Never live on borrowed time, I live W.F.O
Vertex 2 stroke pistons ( 🇮🇹 )are 18% silicone
Vertex makes an excellent piston. They're the OEM supplier for Husqvarna and KTM motorcycles. In certain outboard drag race classes the cast-style in 2.5 liter is required per rule. Those engines are factory rev-limited to 6800 rpm, but racers will spin Vertex's to 9000+ rpm with edgy tunes for hundreds upon hundreds of passes and I've yet to hear of a broken one. Some get smeared from poor fuel tunes, but I don't know of a broken one.
I'm a retired engine builder machinist. I thought the video was poor.
After messing with more than a thousand engines I've learned a few things. Nothing was covered in the video.
Like how to prevent a skirt from cracking and even breaking off as an example.
Hypereutectic speedpro, ar less quality than factory, blow 3 engine on 5, by pistons. never hapen before w/ factory pistons.....
Interesting comment. I'm a retired engine builder/machinist. Can you tell anymore what happened ?