in my VN with a standard diff i could spin the wheels at any slow turn. a bit of pedal and they would spin and smoke.
my VB 253 with the LSD it wont spin at all, just a few squeaks. im just thinking that the car is just too underpowered but i read an article about LSD's and how they work and how they increase tourque in the tyres.
is it true?
tire quality count including wat psi you running in the rears.
also remember the vb is going to be spinning both whels so instead of delivering the power straight to the one wheel, is evenly (well not evely, the inside tire will still have more) spread. so the vb has to basically produce more power to get them going.
that is y you see all te standard later model commodores spinnning the single with no trouble, but when you get the commos like mine vt with lsd, unless i really give it to it and put **** loads of pressure on the drive line they dont spin up.
also saying that my tires squeal round every corner, but i would say thats due to the **** quality tire and i run 45 psi in the rears
feel free to correct me i was jst givn it a shot
johnny.
the aim of the LSD is to drive/turn both wheels at the same speed. torque is the force created by the engine, so the LSD is trying to give equal amounts of torque to both wheels.
with a standard open diff, all the torque goes to one wheel, if you loose traction all that torque then goes to the wheel with least amount of traction.
the reason the early V6 commodores spins the wheels easy is because the buick V6 produces 90% of avail torque from about 1200rpm, the later model ecotec needs more revs before it gets a lot of torque and thats the reason the later models don't spin em as quick
Body by Holden, Soul by Brock
the Legend will live forever
VN exec T5: 15.1sec @92.2mph 1/4 mile, 9.7sec @ 74.6mph 1/8mile, 2.3sec 60ft, 0-60mph 6.827sec 22/11/07 Gtech competition
open wheelers spin easy as around any corner cause alot of weight comes off the wheel due to body roll and the engine only has to spin 1 wheel so it spins up heaps easy.. with an LSD it takes double the power to get them spinning cause it has so spin double the rubber
Why all the obsession with spinning the wheels. May be I'm getting a bit too old but I've always enjoyed a car thats well hooked up and sucks you back in the seat like a 747 on take off. All that smoke and noise just attracts cops and busts drive lines let alone having your car confiscated.
hahah im just wondering on the power side, its a 253 V8 and it doesnt go as well as i hoped to be honest. maybe cause the air filter is very dirty and the plugs might need changing with the leads and its LPG but..... oh i think i answered my question
but thanks for the info guys! made sense
Ummm well ill just step out of my box here and id just like to say at the tender age of 44 I still like the smell of burning rubber,on the pad ofcourse.....LONG LIVE THE VK!!!!![]()
Having owned a few early Commodores, the most common problem contributing to substandard performance and fuel economy with the V8s is warn cam lobes, stretched timing chains and hydrualic lifters that have seen their day.
These three problems generally combine to cause one big problem. Most people who are having troubles check all the things that you mention but never check these three things.
The same applies on the sixes except for the timing chain (they don't have one). Cam lift and phasing aren't hard to check, you can buy a dial indicator and degree wheel for about the same money as the HT leads and plugs you probably didn't need to buy in the first place.
I have had one starfire,two 202's, two 253's and one efi 5ltr over the years. All had cam, timing chain(apart from 202's and starfire) and lifter issues when I first bought them. These problems are nearly universal once there are a few miles on the clock.
i fitted a tightened LSD to the S1 VN to reduce wheelspin cause they spin the wheels quick, LSD didn't help much either. i can still spin em with ease, even in 2nd. i gotta be real gentle with the throttle. was driving in the rain the otherday, even being gentle and only using small amounts of throttle (just enough to not stall engine) it was still stepping the rear end out on gear changes. at least i can see why holden changed it for the s2 engine and then again for the ecotec. s1 V6 are lethal in the wet. good for burnout comps though![]()
Body by Holden, Soul by Brock
the Legend will live forever
VN exec T5: 15.1sec @92.2mph 1/4 mile, 9.7sec @ 74.6mph 1/8mile, 2.3sec 60ft, 0-60mph 6.827sec 22/11/07 Gtech competition
its a 253...
sound of an 8
power of a 6
economy of a 12
the reason tyres spin so easy on early cars is as follows: (all exec. wheels)
VL/VN/VP - 185/75 R14
VR/VS/VT - 195/65 R15
VX/VY/VZ - 205/65 R15
Better technology in tyres, wider contact patch, taller rubber diameter (ie more of it) = more traction = less wheel spin.
And also according to the power chart of an ecotec motor, they apparently make 270Nm @ 1500rpm. = 88.5% total torque! (but you dont notice it because it is either a lie (holden has lied about power figures, paint protection and stuff, just like all local ford nowadays) and/or because they rush to the top end like crazy with their lightweight internals, letting the engine move off its torque band........
Last edited by yeeros; 18-02-2008 at 08:58 PM. Reason: ..
The important bit there is the slow turn, it most likely implies that only one wheel was spinning, the one on the inside of the turn. Could the VN spin them in the dry in a straight line, and could you be sure both wheels were spinning? possibly not
The LSD is there to prevent the total driving force(it can never be 100%) going to one wheel, prevent normal differential action, but provide enough slip to be able to allow for the different speed of the wheels going around corners, whether the VB has more or less torque at the wheels cant be determined here. If the VN can spin both wheels and the VB cant, then there is some serious torque/traction differences between the two vehicles.
it's probably the varajet on it's rags again, exactly like my VH.....full throttle in the wet on 14's stock = no wheel spin..... hehehe
if it didn't crack me up, i'd go insane!
its your diff ratio my vb would do burnouts at 60 slam it into first with some brake.but not now some little tossers stole it and wreaked the diff i changed the diff to a 2.78 ratio or somthing and its a no go no stand still only spin in the wet and thats with 14" 185s lmao
253 plus spinning the wheels...are u serious ?
SIR LS1
the two ton go kart
lmao its a magna.... no need to say anymore
and i would blame the lsd for the traction![]()
theres nothing wrong with 253s holdens just never made them properly with a little help they go great
I dont see why everyone hates the 253, I actually like it. I wouldnt own one over a 308 for obvious reasons, but we had one in the HQ and it was a beast. It had some work done by the previous owner, It had no problems spinning the 225's with LSD in any gear. 4th gear 60km/h and you could light it up quite easy. Also had the nicest sound, a nice crackle to it, sounded better then most 308's.