performance gains from roller rockers?

[sam.]

hey everyone, i drive a VY S II and was just curious as to the performance gains that i can recieve by installing roller rockers? im not after exact figures, just from your personal experiences, have you noticed a difference in acceleration etc.
also, how do roller rockers affect fuel consumption?
thank you, any info about your experiences with roller rocker upgrades would be great

[soop]

Are you talking about high ratio rockers or standard ratio?

Standard ratio is just going to be a reliability mod and wont make any different to the performance of the car.

High ratio rockers open the valves further, or some such. Basically half the job a cam will do but cheaper and easier.

[billy bob]

I purchased a set of 1.9 ratio rockers for my ecotec. I had a customer of my shop I was friendly with who had a workshop with a dyno.
I asked him to fit the rockers. He said "why did you waste money on them, you should have brought a cam"
I told him there a lot easier to fit than a cam with similar results.
So just to prove a point he chucked it on his dyno before and after.
Before 129kw
After 133kw
He said "how much did you just pay for 4kw", replied "I read I would gain 10-15"
In saying that the motor definitely runs smoother, especially above 4000 rpm
I already had every bolt on I could do myself, so maybe gain would have been bigger on a stock motor
Just my expeience

[sam.]

ok thanks guys, yeah i would want some noticable gain so i would go for higher ratio ones. at the moments my car is stock, no mods. would i notice a difference? what other bolt ons have you done? and how much would a cam be?

[The1]

I purchased a set of 1.9 ratio rockers for my ecotec. I had a customer of my shop I was friendly with who had a workshop with a dyno.
I asked him to fit the rockers. He said "why did you waste money on them, you should have brought a cam"
I told him there a lot easier to fit than a cam with similar results.
So just to prove a point he chucked it on his dyno before and after.
Before 129kw
After 133kw
He said "how much did you just pay for 4kw", replied "I read I would gain 10-15"
In saying that the motor definitely runs smoother, especially above 4000 rpm
I already had every bolt on I could do myself, so maybe gain would have been bigger on a stock motor
Just my expeience

did you then get a tune after and check the gain then?

[billy bob]

did you then get a tune after and check the gain then?

No. Understood no tune needed for rockers

[The1]

No. Understood no tune needed for rockers

You can get away without a tune but you may as well go get your money back for 4kw, did they log your AFR when they did the dyno runs? So with my thinking BLM's wouldn't have had time to adjust at all so with WOT using the same fueling as before the rockers it would be running lean with all the extra air going through.

[MICKY.D]

hey everyone, i drive a VY S II and was just curious as to the performance gains that i can recieve by installing roller rockers? im not after exact figures, just from your personal experiences, have you noticed a difference in acceleration etc.
also, how do roller rockers affect fuel consumption?
thank you, any info about your experiences with roller rocker upgrades would be great

The Higher ratio rockers will give you about a 5% power gain over standard, if you already have mods like intake and exhaust the % will drop as you have already gained in the area's that the rockers help, most feel more acceleration from 2000rpm and up, better throttle responce and lower fuel consumption in normal driving .

Cheers
Mike
YT

[WogBoyz]

When i had my rockers put in i already had a full exhuast (high flow cat, pacemaker headers ect ect) a mace air intake and i still noticed a good difference, then delco did a tune for me and went even better again, they all worked well together. Gains werent massive but noticable enough, every bit counts i suspose

[sam.]

thanks Micky.D! no i dont have any mods on my car, stock standard. my car is only a V6 so power isnt amazing or anything, just wondering if its even worth the money modifying an ecotech V6 for power? not really im guessing :/

[billy bob]

You can get away without a tune but you may as well go get your money back for 4kw, did they log your AFR when they did the dyno runs? So with my thinking BLM's wouldn't have had time to adjust at all so with WOT using the same fueling as before the rockers it would be running lean with all the extra air going through.

The kind of tune your talking abount is a custom kalmaker tune. Around $1200
There comes a point where you think i've got to stop throwing money at this thing.
Still glad I installed em, as as well as 4kw i got a smoother running and freeer revving motor which I plan to keep for a while and enjoy.

[The1]

The kind of tune your talking abount is a custom kalmaker tune. Around $1200
There comes a point where you think i've got to stop throwing money at this thing.
Still glad I installed em, as as well as 4kw i got a smoother running and freeer revving motor which I plan to keep for a while and enjoy.

yeh i dont doubt that and it'd be spot on to, would have been interesting to to atleast try a custom or shelf tune, even would be interested if you drove it for a week then went and got a dyno again.

[STL17]

i have installed 1.98 in my ecotec with mace spacers and a hole buch of other mods and will be putting in a custome tune by the1 but even with just a chiptorque tune it flys i eat 5l v8's now but i have spent over $2400 on mods to do that lol

[VT-565]

Must be some pretty tired V8's you're picking on or they need new drivers lol

[Vee-ard]

i have installed 1.98 in my ecotec with mace spacers and a hole buch of other mods and will be putting in a custome tune by the1 but even with just a chiptorque tune it flys i eat 5l v8's now but i have spent over $2400 on mods to do that lol

haaahaha you beat 5l's with just 1.98's and spacers with a tune? you've never raced a 5l have you?

[VUte89]

I gained 20kw with the mace spacers 69mm tb and 1.98 rockers

[jaywa]

Must be some pretty tired V8's you're picking on or they need new drivers lol

hahahaha might be V6's with ss kit's and sticker's. One real bogan one getting around here with that lol

[VUte89]

hahahaha might be V6's with ss kit's and sticker's. One real bogan one getting around here with that lol

I hate that there are even people where I live that have say a vz body kit on a vs i also saw a vl with a vs clubby kit

[Full Spectrum]

hahahaha might be V6's with ss kit's and sticker's. One real bogan one getting around here with that lol

you forget the vt ss came with a v6 option, so not all are mock ups lol.

[soop]

I hope you're kidding...

[04VYSS]

I read somewhere a while back that Holden made like 250 of them from memory.... rare as rocking horse shite, and they were supercharged of course..

[soop]

Did a quick search.
Found one on carsales. So fair cop.

Most retarded Idea ever.

[DLFHUB666]

you forget the vt ss came with a v6 option, so not all are mock ups lol.

Yep, my mate sold his genuine vt S/C v6 ss last year, An kunu (i think thats how you spell it) on here has 1 as well.

[HamaTime™]

i have installed 1.98 in my ecotec with mace spacers and a hole buch of other mods and will be putting in a custome tune by the1 but even with just a chiptorque tune it flys i eat 5l v8's now but i have spent over $2400 on mods to do that lol

Typical V6 fan boy.

I'm sorry mate, how d'you manage to drag off a V8 with more torque and pull than your V6. I've spent money on my Ecotec and let me tell you, I might as well do an engine transplant from my lawn mower, would probably go faster.

Yep, my mate sold his genuine vt v6 ss last year, An kunu (i think thats how you spell it) on here has 1 as well.

The hell? Thought that was why they have the 'S' model???

[DLFHUB666]

The hell? Thought that was why they have the 'S' model???

The early vt ss came with a s/c v6 option. Dont think they had a "S" model then.???