Hypereutectic Cast and Push Rod are Underpowered or am i dumb?

[Swartkin]

I was recreating a Chevy LS7 engine and i noticed how the car had Hypereutectic pistons, i applied it ofc, but i noticed how bad it was and i couldn't make the 7.0L run above 6000RPM, i tried to mess with the quality slider, but it was just very unrealistic to do so i just switched to forged, now the question is, the LS7 has a Hypereutectic Forged instead of cast (From all the place i did search none said if it was cast or forged) or is the Hypereutectic just underpowered compared to real life? Also, trying to make it get 505HP was a pain in the ass due to the push rod head but i noticed that when i switched to Overhead cam or above it could easily reach 550hp, i had to make the fuel 98 RON and the ignition timing to 100 to make it work. Maybe pushrod head is a bit to weak compared to real life? Idk man, i may be saying crap, but it's good to learn new stuff

[Kirby]

when you realize outdated technologies are bad

[Swartkin]

Originally posted by Kirby the god of destruction:

when you realize outdated technologies are bad

Hmm, it is bad but just like i said, the LS7 had Hypereutectic and it had a rev limiter of 7000rpm and the peak HP at 6300 RPM, which the piston wasn't able to get not even close, even with 15+ quality slider, which made me question this

[Kirby]

Originally posted by Swartkin:

Originally posted by Kirby the god of destruction:

when you realize outdated technologies are bad

Hmm, it is bad but just like i said, the LS7 had Hypereutectic and it had a rev limiter of 7000rpm and the peak HP at 6300 RPM, which the piston wasn't able to get not even close, even with 15+ quality slider, which made me question this

the ls7 engine has hypereutectic aluminum pistons, probably not the same in auto, and are you sure the bore and stroke are correct?

[Swartkin]

Originally posted by Kirby the god of destruction:

Originally posted by Swartkin:

Hmm, it is bad but just like i said, the LS7 had Hypereutectic and it had a rev limiter of 7000rpm and the peak HP at 6300 RPM, which the piston wasn't able to get not even close, even with 15+ quality slider, which made me question this

the ls7 engine has hypereutectic aluminum pistons, probably not the same in auto, and are you sure the bore and stroke are correct?

Yup
Bore: 4.125 in
Stroke: 4.000 in

If it isn't the same then fine, but man i had to mess with sliders and everything to make the engine reach 505hp, i'm pretty sure that pushrod heads aren't that terrible

[Kirby]

Originally posted by Swartkin:

Originally posted by Kirby the god of destruction:

the ls7 engine has hypereutectic aluminum pistons, probably not the same in auto, and are you sure the bore and stroke are correct?

Yup
Bore: 4.125 in
Stroke: 4.000 in

If it isn't the same then fine, but man i had to mess with sliders and everything to make the engine reach 505hp, i'm pretty sure that pushrod heads aren't that terrible

i think the ls had some extra trickery not available in automation, and yes, by modern standards pushrods are terrible

[Killrob]

Pushrod is that terrible, it is just the American's and the LS series specifically who have become amazing at making so much with an outdated technology. Also no, the pushrod tech in an LS engine is not what is in Automation. They use all kinds of fancy materials to make that magic happen. It is basically the equivalent of pushrod run at +12 Quality, and even then that is not quite enough because of all the magic they are doing in LS engines :D

[Swartkin]

Originally posted by Killrob:

Pushrod is that terrible, it is just the American's and the LS series specifically who have become amazing at making so much with an outdated technology. Also no, the pushrod tech in an LS engine is not what is in Automation. They use all kinds of fancy materials to make that magic happen. It is basically the equivalent of pushrod run at +12 Quality, and even then that is not quite enough because of all the magic they are doing in LS engines :D

Damn, GM really did push themselfs then, Thanks!

[jfblake90]

Pushrods arent bad at all. They are still the best IMO. I would take a GM LS or Chrysler Hemi any day over any other motor being built. They are so much more compact, and easier to maintain and repair. And in the case of modern OHVs their blocks are so rigid that you can do crazy mounts of power boosting mods cheaply and easily.

[Kirby]

Originally posted by jfblake90:

Pushrods arent bad at all. They are still the best IMO. I would take a GM LS or Chrysler Hemi any day over any other motor being built. They are so much more compact, and easier to maintain and repair. And in the case of modern OHVs their blocks are so rigid that you can do crazy mounts of power boosting mods cheaply and easily.

yeah, but so can smaller dohc engines, there are crazy hill climb machines with way smaller engines, that produce 800-900hp, like the suzuki escudo which makes nearly 1000 hp out of a 2.8L V6

[thegreensteem]

Originally posted by Swartkin:

I was recreating a Chevy LS7 engine and i noticed how the car had Hypereutectic pistons, i applied it ofc, but i noticed how bad it was and i couldn't make the 7.0L run above 6000RPM, i tried to mess with the quality slider, but it was just very unrealistic to do so i just switched to forged, now the question is, the LS7 has a Hypereutectic Forged instead of cast (From all the place i did search none said if it was cast or forged) or is the Hypereutectic just underpowered compared to real life? Also, trying to make it get 505HP was a pain in the ass due to the push rod head but i noticed that when i switched to Overhead cam or above it could easily reach 550hp, i had to make the fuel 98 RON and the ignition timing to 100 to make it work. Maybe pushrod head is a bit to weak compared to real life? Idk man, i may be saying crap, but it's good to learn new stuff

pushrod is poor for head flow. Good engineering for 70 or so years has allowed you to see pushrod engines that meet or exceed the ability of OHC heads to do airflow. Only reason they're around is cause it's compact and frankly they're engineered well.

You want power out of a pushrod then just increase it to +15 or something.

[Plasmetic Raven]

Gotta love OHV for simplicity of working on them though

[thehides]

Well you can't do a lot of stuff with OHV in game, like notice how you can't have VVL on push-rods, while GM has VVL on their modern OHV engines.
That is to say, you can still build some proper good, green rated, 00s and 10s cars with an iron block push rod engine. You won't make a lot of "bang for the sip" but that is the beauty of the game, you can make up compromises in one field with advances in other, depending on the target demographic...

[Connor Levy]

OHV engines are too weak in the game in high cam profile engines. NASCAR uses OHV and pushed out over 900 hp in 2014

[Killrob]

Originally posted by Connor Levy:

OHV engines are too weak in the game in high cam profile engines. NASCAR uses OHV and pushed out over 900 hp in 2014

Last time I checked NASCAR engines were not put into factory production cars :P

[Swartkin]

Originally posted by Connor Levy:

OHV engines are too weak in the game in high cam profile engines. NASCAR uses OHV and pushed out over 900 hp in 2014

the OHV they used in NASCAR engines were extremely expensive and over engineered to reach that kind of power, something no factory would make for a production car, try making a LS7 have 900hp NA with Carbs, dude, you just can't, the technology used in Nascar is just so incredibly amazing that it's cheaper and easier to make a DOHC with 4 valves than those pushrods