Proof that Motor trend is clueless

OH MY GOD

EVERYONE STAHP WHAT YOUR DOING

THERES A TYPO ON THE INTERNET

What is the typo?

It should say over head valves not single over head cam

A 15 y/o M5 makes that.

But the Chevy SS isn't in the shop

Oh shit I learned something new. I'm gonna assume the little arms are "push rods" right? whats the point of doing it that way?

It's a lot more compact. Larger displacement in a smaller package, more low end torque.

On the left is a 4.6 with dual overhead cams. On the right is a 5.0 push rod engine.

But the M5 is owned by the Gov't.

fuck yeah everyone should do it that way, no?
also nice trips

simplicity
cost
smaller size
less moving parts
faster to manufacture

in my opinion only V8s should be pushrod.
anything else should be DOHC i4 i6s ex.

And how much was an m5 brand new? At least 3 times the price, and a COMMODORE (not a chevrolet piece of shit you septics try to pass it off as) doesn't need track car level of maintenance to be driven around the streets.

The down side is engines are typically less revvy and its harder to have variable valve timing in them.

they don't rev as high and can only have 2 valves per cylinder. OHC can have 3 or 4 valves.

Who cares how much they were 15 years ago?

You can pick up a decent e39 M5 for half of what you would pay for the SS.

good meme

no, they shouldn't, people actually like powerful engines

440hp 250lbft VS 556Hp-550lbft

kinda hard to compare the 2 here.

a mass produced production engine vs a race built one.

the blown engines are much taller than say a stock LS1.
not sure why a 3.0L is that big to begin with.

hey, that image was made in solidworks

I bought this for 8k USD.

It's a little slower.

But it doesn't look like a Malibu.

The 2016 Chevrolet SS looks better than that, though.

...

Confirmed for owning a Cavalier, because that is exactly what this looks like.

I don't blame you for being poor/mad, but I think there is a designated thread for that, though it might have already 404ed.

>calling anyone poor
>while shilling for a fucking australian taxi

kek

Damn, dude. I think you quoted the wrong post.

fuck dude 8k? here in U.S. they go for like 15-20k +abused +high mileage

No Im pretty sure he quoted the right one.

Also Im pretty sure you can't be poor and own an M5, it won't stay running for long otherwise.

Aw man, I think you quoted the wrong post.

$10500 CAD in October of last year. Clean title. 120k miles. Owned by a guy fresh out of med school that had to fire sale it to pay bills.

i think that dumb faggot belives i am alphonse or something

Is.... Is... that carbon black?

I picked up a topaz blue Msport 540i last year for that much.

Not again, man. Seems like you quoted the wrong post.

well, there we have it, some retard actually thinks i am alphonse

Yup, that's carbon "black" under some very bright lights. In overcast skies or at night it's pretty much indistinguishable from a normal black car.

Yours looks mega clean, facelift too. Like it? I've got an Orient Blue 540 wagon for a daily but it's lolauto. Torquey though. Enough to spank FRSes and stuff.

I love it, has some aches and pains due to age but they're getting worked out.

Very jealous though, that and Imola red are very hard to come by here in the states, most are black or silver.

For Inline, like your image, it's absolutely pointless since ohc will have the same number of camshafts. In a V configuration, you get rid of 3 of the camshafts and significantly decrease weight, size, and center of gravity

>you get rid of 3 of the camshafts

and you need to add pushrods, rockers and extra displacememnt because lol2valve

>not wanting a comfy RWD landbarge that can go sideways

Fuck off back to your Miata, mate.

>16 twig arms vs 3 solid rods

>For Inline, like your image, it's absolutely pointless

Not exactly, you can still get a compact inline engine.

For example, the ford Iron Duke was smaller than most DOHC engines of it's displacement for decades till a modern one took it's place.

If a modern pushrod inline engine were to be made it would be smaller than the 1L 3 cylinder.

>its harder to have variable valve timing in them.

No, it was just never done. The new viper has VVT with concentric camshafts.

youtube.com/watch?v=0uiDmcPEekc

>an only have 2 valves per cylinder.

Duramax, Cummins and Powerstroke engines would like to have a word.

youtube.com/watch?v=3XDf-nYUHfg

>solid rods
>pleb doesn't know about hollow camshafts

keep drinking the pushrod kool-aid

So. Hollowish logs vs twigs

Then not to mention the larger heads and timing hardware

God dammit, my bad, it's the Kent engine not the Iron Duke.

Kent engine lasted from 1959 to 2002.

Think about that for a while, an engine from the 1950s was smaller than most shit in it's displacement till 14 years ago.

>Then not to mention the larger heads
heads aren't any larger than hemi heads or 4 valve pushrods
plus there are SOHC engines with 2 and 4 valves, which are probably the same size as a OHV head

>timing hardware
which a lot of OHC engines dont have? plus it makes more power so its hardly a disadvantage

your argument is retarded

>heads aren't any larger than hemi heads or 4 valve pushrods

They are usually taller because they need space for the camshaft. A hemi head is still lighter than a Honda B15 head undressed

>Honda B15

Proof that OP is clueless.

Forgot to capitalize the T in Trend.

shāh māt OP

Typo, my bad.

A B16 head weighs around 45 pounds, B18 is even heavier at 50 pounds, a hemi head is around 37.

>A hemi head is still lighter than a Honda B15 head undressed

hey dude

you know what is necessary when posting these kind of unsustained claims right?

i mean at least quote a forum post

DIRTY KENT PORN

honda-tech.com/honda-crx-ef-civic-1988-1991-3/how-much-does-b16-head-weigh-587510/

I'll look around for the hemi weight but it's around 37 pounds if you use aluminum heads. Steel heads are obviously heavier. Using aluminum heads usually shaves about 50 pounds off a dressed block

Clueless? By what means do you say they are clueless? If they get a car to review. they obviously has to get the facts said to us. What you have exaggerated and told over here is a typo error that can happen to anyone.

>But I dont have a scale to make positive sorry

well at least you tried

people always forget that both GM and Ford had pushrod inline engines up until recently with designs from decades ago.

Only reason DOHC became mainstream was for two reasons.

DOHC was seen as "advanced" [even though it's been out at about the same time as pushrods] and displacement regulations.

Forced induction engines using DOHC don't even rev past 7000rpm most of the time so Alot of the advantages go out the window.

You do realize it was someone else in the thread that answered with the weight, not the OP

I hope you're American, because they're the only country where it's cute to still like pushrods. Pushrods are shit.

>Pushrods are shit.

Just because you say they're shit doesn't mean they're shit.

It has it's uses

>he thinks the only advantage of OHC are revs

kek

yeah, and that guy wrote ">But I dont have a scale to make positive sorry"

an aluminium hemi head with siprngs, valves and rockers weights almost 80 lbs shophemi.com/c-1170-ported-hemi-heads.aspx

That weight is for two heads, they sell as a pair.

And the weight post is the only post that user made.

Read who posted what again.

right, one head weights 48 lbs shophemi.com/p-197-57l-driver-side-head.aspx

still, just as heavy as the apparent weight of a b16

You already posted one that was lighter at 40 pounds per head and cherrypicked a heavier one on purpose

This shit doesn't happen at Car & Driver

which one?

the only head that is lighter is the 6.4 apache, and that prob doesn't include valves or spings

the 48lbs is probably the packaging or something

on average, the gen 3 hemi heads weights almost 45lbs

>an aluminium hemi head with siprngs, valves and rockers weights almost 80 lbs shophemi.com/c-1170-ported-hemi-heads.aspx

80 pounds for two heads plus packaging for shipping.

Or was that someone else?

don't have to worry about the timing chain so much
how ever their are downsides

like rod flex taking away some of the cams lift
but this can be made up for by using a different rocker ratio

also that the rods being where they are gets in the way of the ports
many inline push rod engines are reverse flow in part because of this

more torque comment is just because most of the time push rod engines don't often go north o 6000 r/pm

r u a tard???

the one that weights 48lbs includes the valves, the pair of ported heads don't

thats where the weight difference comes from

depending on the amount of material ported and how heavy your valvetrain is it is safe to assume that a gen 3 hemi head weights 40-50lbs, and these are modern hemi heads, older ones are surely heavier

so lets assume the weight posted in that forum is correct, the b16 heads weights as much as the 3rd gen hemi heads, and that includes the two camhsafts and valves, because i doubt that guy took the cam holders off the head

the k20 weights as much as the b16/b18, so the k20 head must weight similarly to the b head

so much for hemi heads being lighter than DOHC ones

Apparently I'm a tard.

shophemi.com/p-816-64l-drivers-side-head.aspx

Here's another one with valves that weigh even less and I didn't even have to look that far. And this is why I said it looks like you just looked for a heavier head.

yeah that weight must be off, the only difference bewteen the apache heads and the 5.7 and 6.1 ones is the bolt pattern and bore size

hot rod mag made a massive article about it, the castings aren't any different

>he needed proof
their journalists are a total joke. none of them can drive for shit. auto journalism is hilariously bad.

it's like art critics. if they could make good art they wouldn't be critics.

yea pretty much, so now you get what I'm saying with pushrod weight?

no, the only pushrods heads that are lighter than OHC heads are wedge 2 valve ones, and you still have to add the pushrods, rockers and camshaft weight, plus 2 valve a shit

4 valve pushrod heads and hemi heads weight as much as OHC heads and the difference between wedge 2 valve heads isn't that big

the difference is noticeable in cars because cars are engineered with reliability in mind, so they need more than enough casting material, but motorcycles aren't, the weight difference on motorcycles isn't that big

caranddriver.com/features/pushrods-in-perpetuity-technology-in-use-since-1886-is-still-kicking-tech-dept

>2 valve wedge v4 based on the LS
>130lbs without trans

according to several forums the engine of a cbr1000 weights less than 150lbs, 140lbs being the average

i just dont see the advantage of pushrods at all, the LS is the only exception

valvetrain is not what makes an engine light, casting and material used does

I just showed you a head with packaging that was under 40 pounds.

There were also aftermarket heads made by a company called Dominion that were very light weight being billet.

Till Arao started fucking around with them and became a scam artist destroying the company in the process.

Like I keep saying, all the pushrod engines haven't really had the effort put in to make them compete with DOHC because they have just been "good enough".

DOHC engines have always had weight distribution issues (with a good bit being ontop) so they worked to lower head weight for the past few decades, while everyone who uses Pushrods just go with what worked.

If there were a company that made high end 4 valve engines with pushrods then it would be a different case, but there's just no reason to do it since 2 valves work so well so far and the money to put tooling in wouldn't make sense since the aftermarket will pick up where you left off.

There are way more reasons than just valvetrain yes, but as a rule of thumb, Pushrod heads have always been lighter when it's made for the time and not just banking off a design made 20 years ago (talking about the LS and the current Hemi)

>I just showed you a head with packaging that was under 40 pounds.
those are wrong, the casting for the apache heads are the same as the other heads, must be a typo
hotrod.com/how-to/engine/ccrp-1210-inside-the-g3-hemi-cylinder-head/

the only difference is valve size and bore

>If there were a company that made high end 4 valve engines with pushrods
a lot of diesels do

>Pushrod heads have always been lighter
yeah, but while the heads are lighter, you still have to consider the weight of the pushrods, rockers and the camshaft, which compared to a SOHC 2 valve engine isn't that significant

>4,000lbs sedan

>Duramax, Cummins and Powerstroke
These are all stage names I'd use if I were in the gay porn industry.

They wouldn't have made that mistake for multiple heads.

It's quite a few on the same site shophemi.com/c-1209-stock-replacement-hemi-heads.aspx

>a lot of diesels do
They need to be heavy to make strength for the chamber, I brought up dominion and Arao because they did till Arao killed the company with his shenanigans.

> you still have to consider the weight of the pushrods

Those are what, 100grams per steel rod? It isn't really that much.

The weight is also kept in the block rather than biased pass the top of the block itself and right around the base of the heads.

>oy vey i've been foiled again by your original banter, woe is me.

How have I never noticed this?

>36 grand for a 1.6 that can't even reach 200hp and only revs to 8k
>charging that much for pushrods
Wew lad

You dun know what you're jabbering about.

He was calling the motus engine overpriced, which it is.

Here's the other side, there two cute little pushrods in each cylinder head with their own camshaft. I go in an re-set the valve clearance and balance the throttle bodies once a year and it purrs like a kitten.

1143cc dual cam pushrod twin. 85hp and a lot of torque, revs to 8,000rpm. Heads are all aluminum, magnesium valve covers, COP ignition, I doubt the heads weigh more than 20lbs fully assembled.

Pretty sure i replied to the wrong person

Ah, the DOHC heads can be lighter than pushrod heads fag?

Yea he won't get the memo or understand that both systems have their uses.

Sold my scoot so I can finally restore this beast.

Really glad I didn't hack my bike to shit when the cafe-racer bukakke blew by, just the matching block and frame with the title and tags are worth ten times what I paid for it.

Time for revs

Crazy ass swedes

youtube.com/watch?v=UQ2uXv_maHo

youtube.com/watch?v=qRsEgguuNFw

youtube.com/watch?v=JtpzA0hd8Kg

>you need to be a racecar driver to enjoy and rate cars

I see where you're coming from but come on... don't be so cynical

Mt does an excellent job because they get perspectives from normies and pros. Just like in critiquing music, the view from a bystander can sometimes be a breath of fresh air and can reveal things that a serious musician can't

>a full 12" longer and almost 500lbs heavier than my truck

absolutely disgusting

its funny pr sad im not sure witch but anyhow let me explain to the fucking retards on this site its a sohc per bank god damn it makes me feel like a genius evertime the 16 year olds get together and circle jerk cars theyll never drive

36k is the price of the whole bike, dumb faglord

3900 is pretty fucking light for a big V8 RWD family sedan. Not everything is a fucking Miata.