Does red lining too often hurt the engine if it was build for normal driving?
I recently found out that driving quick with my old city box is fun as fuck, I'm just affraid I'll blow up the engine the way I'm treating it. Should I tone it down? Any tips on how to take good care of my engine?
I'm quite new to cars, only did a few repairs myself so sorry if the question sounds stupid.
Wyatt Edwards
It can only hurt shitty engines, things I try not to operate.
Nolan Jackson
It hurts if
>the engine is shit >if the engine is old (get water AND oil to temperature and even then wait a couple minutes before going madman) >if the engine has problems and needs maintenance >if the car has under 5k miles on it
David Allen
*COLD not old. typo.
ok old isn't great for redlining too
Jordan Cox
entirely dependent on the engine.
my 24v cummins can redline all day long, its built to do that because its an industrial diesel motor.
my 3sfe might grenade if taken near redline for more than a few minutes, because shitty economy car.
it depends upon what it is.
Andrew Perry
>ford powershift still autoshifts when you set it to manual if you hit middle of the redline
kill me
Robert Brown
Most autotragic trannies of today upshift automatically even on M. It's part of showing you how fucking cucked you are in a modern car.
Blake Garcia
A-at least I'm still hitting peak power before redline anyways, r-right
Kayden Reed
entirely dependent on the engine.
peak power might be 100rpm from redline or 2,000 rpm before redline.
Luis Robinson
Modern engines do not have an issue with redlining. But I would wait to warm the car up before gettin hektic. Variable timing has made redlining not as dangerous as it used to be
Benjamin Rogers
Probably to prevent the wife of the car buyer from destroying the engine when it is left in "manual mode" I forget which car youtube channel said this story, but the wife of some wealthy guy drove a Maserati (left in manual mode) around in 1st gear while the engine was screaming at redline the entire time
Jace Gonzalez
Holy fuck how can people be so oblivious
Luis Williams
Redline starts at 7, peak power at 6.5
Funny enough, the reason I got the selectshift was for the wife.
Ryder Cox
well if peak power is at 6.5 then there is no reason to go past that.
Joshua Price
Dont tell me what to do
James Bailey
Well it's a 15yo Renault so I'm not sure about the quality of the engine to be honest. Though if it helps it's in very good shape, the head has been rebuild last year and the engine has 70k miles on it. I also always wait even after it's warmed up. Thanks for the repiles.
Dominic Miller
As someone who has never driven manual, how do you not stall when going from stopped to first especially on a hill? From my understanding, if the engine is on, the clutch is in and the wheels arent turning then engine is stalled. Do you let off the clutch pedal until the wheels move?
Hunter Wood
Your redline is designed to be BEFORE you hit valve float. The biggest issue is heat with lots of high revs. As long as the engine's warm and you have the correct amount of oil you're fine.
Owen Mitchell
theres no reason to go udner that either then
Andrew Long
>mfw redline at 6200 and peak power is 4800-6200
Grayson Green
>Clutch in >Set handbrake >When ready to begin moving again, begin revving >Release handbrake and clutch out when you're revving high enough to upshift to 1st >Upshift to 1st
One of like 5 different ways to do it, and not fucking rocket science.
Easton Stewart
>how do you not stall when going from stopped to first especially on a hill? You hit the gas while in neutral and when you hit a certain RPM (based on your car where to set that line) drop the clutch in first. How I've always done it. my FC rx7 needed to be at like 2.5k before I let the clutch drop on flat ground. 162k miles when I gave it to my brother, still doing strong.
Nathaniel Carter
last three are done pretty much simultaneously, should obviously not release the handbrake until you're in the process of shifting
Adam Morgan
exactly
Hudson Walker
>Not heel-toeing
casual
Nathaniel Ward
Right foot on brake, left foot on clutch. Depress both. Shift gear to 1st. Apply handbrake, release footbrake. Gas up to 2-3k revs, dependant on conditions. Release handbrake and release clutch, keep foot on gas. It'll go.
Alternatively, on new cars with hill assist/old cars with skillful driving - ignore the handbrake. My car doesn't even have electric mirrors and it has hill assist, it holds the car for about two seconds. Plenty of time to rev up and let the clutch out.
Cooper Stewart
That sounds a lot more complicated than what I do. >Push in clutch while in 1st >Hold car up with brake pedal >Let out clutch to friction zone while letting off brake >Gas and go
Nolan Evans
A red line a day keeps the carbon away
Hunter Lewis
>3sfe
what kar?
Kevin Parker
>not just pouring a few cans of seafoam into your tank baka, look at this fucking amateur hour here. Bet you push in the clutch too instead of rev matching.
Angel Robinson
Unless you are driving a trabant I don't think carbon buildup is an issue. Especially with efi
Jackson Taylor
can you blow up an engine if you try to race someone and don't shift from 1st gear when you're nearing 60mph? my dad says his friend honda vtec (don't know the year) blew up when he tried doing that. i thought cars had a rev limiter
Adrian Cook
>Not perfectly rev matching >Shift anyways
GRRRRINNND GRRRKK CRUNCH SNAP
Chase Cooper
I wish I was driving one
Andrew Wood
Volkswagen/Audi engines have this issue
Christian King
Ok, that makes sense. But is there some slip in the clutch when the clutch goes in? I mean its a friction pad that works like a brake right? I was thinking that when you let off the clutch pedal, the whole drive train is totally locked in but there has to be some slip in it till you start moving yeah?
Jack Allen
>from 1st gear when you're nearing 60mph? jesus. you're already banging on the redline at 15mph in most cars. But yes that will fuck your life up
Nolan Robinson
>Honda vtec Not all cars have rev limiters and most aren't designed to bounce off of the rev limiter for extended periods of time. Also >60 mph >1st gear
Jace Gomez
shelby gt 500 can hit 0-60 in 4.2s on 1st
Liam Martinez
The clutch pedal has travel for a reason. It's an axis, not a digital switch. You let it out slowly so it has time to synchronise.
>in most cars Really? My cuckbox will let me hit 30 in 1st. I thought that was normal.
Ryder Morales
Have you driven stick before?
You can feel a 'bite' when feathering off the clutch (what calls the friction zone I believe) at the point when the gear starts syncing.
Clutching out should be a gradual process, if you're just yanking your foot off you're gonna grind as much as if you didn't clutch at all.
Owen Williams
Yes but it's pretty minimal. The fags you see that complain about clutch wear are people who "ride the clutch" aka use the clutch instead of throttle to adjust input
Aaron Anderson
Yes there is clutch plate slip. If it instantly locked and had no slip, it would destroy your drivetrain instead of the clutch itself, and two plates wouldnt be the method of power transmission for the system. Think of it like a Fuse in an an electrical system.
However, problems do arise if you let your clutch slip too much way too often and you ride the clutch in a manual transmission vehicle. You'll overheat it and wear out the lifespan of the clutch. If your clutch is also designed for a low power/low torque application and you've modified your car, you could also completely gape out your ass and wallet when those plates connect with more force than it can handle.
Hudson Parker
Be a woman
Brayden Watson
>shelby gt 500 can hit 0-60 in 4.2s on 1st What do the gearing ratios look like on this car? Sounds like a fucking retarded idea, but if it works
Gabriel Russell
Ive never driven stick, but I know a little about how it works
That makes a lot more sense now, thanks for clearing that up anons. I love this board
Leo Clark
3.31 and it's actually 3.7s 0 to 60 in 1st not 4.5
Camden Robinson
Keep in mind that engine oil takes longer to get up to temperature than coolant, it's a bummer since most cars have only a coolant temperature gauge.
If you care so much send a used oil sample for analysis it will tell you a lot about your engine.
It will tell things like wear metals and if you should shorten your OCI, and I would say quite important for an older engine coolant presence in oil since that will hurt oil performance a lot.
Also a blow-by test would not hurt either.
Samuel Hall
No matter how much you read on the Internets it will not replace actual practice.
Landon Butler
Redlining is always okay as long as your engine is warm! It should be ~90 degrees Celsius (the temp gauge should be in the middle) before it's technically safe.
I would strongly advise against redlining on a cold engine though. You may bend your piston rods or worse.
Jeremiah Wood
I thought it was still beneficial to rev past peak power because of gearing advantage ?
Levi Powell
I'm kind of scared of redlining my car because everything starts to vibrate more. The gas pedal, the clutch pedal, and engine. Also above a certain speed or rpm there is this sketchy high pitched rattle noise so I tend to avoid it. Like it comes on at 82 mph without fail every time or if I'm in 4th gear at 70 mph. >you're already banging on the redline at 15mph in most cars My car has a tall 1st gear, lets me go up to 35-40 mph.
Ryan Reed
Didn't know I could get a test like that, thanks for the advice user.
Bentley Jenkins
Shouldn't you occasionally redline diesel cars, to unfuck the exhaust?
Ian Barnes
Yes because diesels are prone to carbon buildup.
Hudson Smith
>not being quick enough to just take your foot off the brake and give it gass before you roll at all
Bentley Martinez
>MFW redline is 5500 and peak power is 3000-4000
Fucking truck engines.
Jose Hill
Mine is a cuckbox, but that sounds about right.
Carson Richardson
The engine ca take it, especially a truck engine. The issue is the transmission and the rest of the drivetrain. You're severely shortening the life of your tranny and axle/ CV axles.
Parker Murphy
>this is BS
Alexander Gray
The tranny and cv joints/axles are under most stress when launching, no? As long as you're not pushing 500hp in a shitbox you should be fine
Jeremiah Baker
Yes they are. Drivetrain components have torque limits, not horsepower limits. Launching causes spikes of torque that the engine could never make on it's own- imagine a split second of like 1400ft-lb of torque 'shoking' the drivetrain. That's what breaks trannies and driveshafts, not necessarily HP. Torque is also what breaks engine components too, which is why a Honda F20C can make 700hp on stock rods, because it's only making 450ish lb-ft of torque and at a high RPM, meaning that according to the connecting rods, 450lb-ft at 9K (hypothetical) is exactly half the force as 450lb-ft at 4500RPM, since @ 9K RPM, it has two separate power strokes to distribute that torque vs 1 power stroke to carry it on the 4500RPM engine.
Lincoln Ward
HP is still an important measure as it is still a function of torque, high horsepower means high torque at high revs, and as a result you will have gearing advantage on a lower revving engine. In your example 450ft lbs at 9000rpm has twice the torque in many real world applications than the 450ftlbs at 4500rpm
Anthony Young
You definitely should. >mfw going up the toegay in my 75 HP diesel Merc at 4500 RPM redline, cutting corners at breathtaking 25 MPH
Owen Taylor
this. 100% patrician
Owen Thomas
>24V twice as many valves as you want
Adam Hernandez
AHAHAHAHAHHAHA stupid piston cucks
man it feels good to drive a ROTARY
Gabriel Parker
You might aswell buy a two stroke snowmobile motor and swap that in your rx7. It'll last longer, burns cleaner and you'll get more power without losing the wankel powerband
Nathaniel Bailey
dorito was a mistake
Dominic Gomez
yes, to merge safely I redline my 16 tdi at every onramp.
Christopher James
then why's no one doing it?
Daniel Price
>car's peak power is at 6k RPM >car's redline is at 6.8k RPM
How am I supposed to get the most out of my car if I can only hold it in that position for like a second at the most.
Christian Roberts
Itwasajoke.jpg
Leo Nguyen
This. Before browsing Veeky Forums I never even thought to use the handbrake on hills.
Grayson Anderson
you (somewhat) slowly let out the clutch until the tires are moving near the same speed as the engine
Jace Brown
First gen automatic neons can 0-45mph in first gear. I wouldn't be surprised to see some other shitboxes able to hit 50 in first gear
Xavier Martinez
How can 1st gear be so tall and not lug around at slow speeds?
Julian Barnes
better gearing. same reason formula cars have 8 forward gears
John Fisher
If it's automatic it'll hurt the transmission more than the engine.
Noah Collins
I mean go call your husband or some shit and figure out how it works. That is inexcusable.
Robert Wood
Guy with the 15mph here, was driving today and its like 23mph at redline in 1st, second is like 45mph. both of those are past peak power though and a fucking waste. Should really be shifting at 18mph and 40mph respectively. Its a Fiesta ST Just surprised a car like a Ford Mustang that is all low end power, is getting to 60mph in first gear. What the hell are the other gears for then? Do people just drive in first and second all day when they own those?
David Ward
actually, there is because the torque loss is usually less by pushing it to redline rather than shifting, it's super rare for redline to have such a torque loss that shifting sooner would actually be recommended.
Lucas Jones
fuel economy. can you actually drive manual?
Michael Williams
It makes sense now but driving a car for fuel economy didnt even cross my mind until you mentioned it. Thanks user.
Lincoln Jackson
but when you shift at 6.5 your revs go down and so your max torque is further away
Lucas Anderson
>Mfw powerband and redline start at 6k and go to 8k
Ethan Cruz
My old Nissan had tall gears. Car weighed next to nothing but only produced 69hp/76tq when it was new.
First would take me to 30mph and second would run to 65 iirc. Was a shitbox designed for maximum empeegees during the oil crisis.
Lucas Howard
Depends on your powerband and gearing.
Grayson Wilson
After a gentle running-in for its first 1,000 miles I red-lined every gear change and it was still going strong 200,000+ miles later on the original clutch
Jayden Reyes
Lots of torque in the engine. The 2.4l turbo is fucking beefy down low.
Jaxson Howard
that ain't shit >buddy lets wife drive his diesel while he's out of town since he took the shitbox to the airport so the truck didn't get stolen >she spends the whole time driving it in low since the gear positions were different between cars and she didn't read the gear selector >truck spent a WEEK driving around at like 3k >somehow didn't grenade
Jacob Davis
>>truck spent a WEEK driving around at like 3k No way bro, a whole entire 3K? WOW how can it survive
Charles Nelson
overfueling, not revs kills diesels, if shes got it in low she wont be using much throttle at all to make it do 3k revs, as such its gonna be getting heaps of air and not much fuel, which is fine for diesels petrols are the opposite, lean mixtures cook petrols.
Nathan Johnson
>not driving a super long stroke truck that redlines at 2.5k baka
Christopher Sullivan
can't be more than 120mm stroke. Lambo/Audi V10 has 93mm stroke and redlines to 8500. 120mm or something can def. do 3500. Which engine though?