squeeking VS ecotec roller rockers

[nalchlan]

hey guys i got mace's 1.98 ratio roller rockers for my car and put them in and had no trouble, it started and ran fine.

but about 3ks down the road slowing down in 3rd i heard a squeeking sound. the noise stopped when i let it idle for a while but after i drove it 500 metres down the road again it squeeked, i put my original rockers in to see if it was causing the noise, they didnt squeek even after i drove it on the highway, so i put the new roller rockers in yet again.

it has been fine for 2 week. then i did a little skid in the gravel at my mates property as we left and they started squeeking pretty loud. it went away after i was 3 minutes down the road. ive had the rocker cover off and after about a minute at idle they all have plenty of oil. the rocker seat and pushrods didnt have any scoring/ discolouration . any one know what it is exactly thats squeeking and what causes it? id really appreciate some advice

cheers

[soop]

lol.

Just put the standard set back.

[ari666]

i blame mickey mouse.

[VKCOMMO]

Burnouts are bad......

If you didnt do the burnout then it wouldnt squeek.. Ive got a set in my car, take a look in the warranty booklet, I think it mentions burnouts on page 3...

[ari666]

hey, far out thought... you checked your wheel bearings?

[Brett_jjj]

Pfff,If they cant handle the revs of a small burnout when taking off,then they cant be very good quality.Id get rid of them before they do some damage to something else.You are much better off fitting a decent cam anyway.

[soop]

Pfff,If they cant handle the revs of a small burnout when taking off,then they cant be very good quality.Id get rid of them before they do some damage to something else.You are much better off fitting a decent cam anyway.

This. After you find another two cylinders.

[VKCOMMO]

Pfff,If they cant handle the revs of a small burnout when taking off,then they cant be very good quality.Id get rid of them before they do some damage to something else.You are much better off fitting a decent cam anyway.

But what is a small burnout, If I know my VS drivers, and I do, Then I recon that a small burnout was up to the limiter...

[soop]

LOL, all 6000rpm of it....

Considering the power dies at about 4500rpm, 6000rpm is probably enough to kill most anything...

[Brett_jjj]

My VS is usually revved up to or near the limiter every day,and thats with standard rocker gear,I thought roller rockers were supposed to be better?They should be able to do this no worries if the standard rocker gear can handle it day in day out..

[MACE]

I'll be honest with your it's the first time I've ever come across this problem based on the many sets we've sold

If the rockers are a fault then it's no big deal as they come with a lifetime warranty. Shoot us an email or give us a call. Were you supplied with different push rods?

Cheers,
Steve

[Brett_jjj]

Maybe they are just a faulty set ,or maybe they were installed wrong.But they should be able to handle that amount of revs no worries. Especially just a quick squirt..A lifetime warranty is a pretty good deal.Especially for a hard working engine part like rockers.Although most people dont rev their engine to the redline all the time.I admit I do a lot of the time,but its not held at these revs for long,so I havent had to worry about rockers etc.Its given no trouble yet anyway.If you constantly want to hold big revs ,you cant beat roller rockers,amonst other things,but most of these guys fit the high ratio roller rockers for more valve lift.You can hold the valves open for longer ( longer cam duration) and achieve the same result as more lift buy fitting a decent camshaft.And it puts heaps less stress on the valve train components.If you can fit rockers,you can fit a camshaft,all you need is a decent workshop manual to follow,I think a lot of people dont seem to realise this.

[nalchlan]

on p-plates so i cant get a v8..or id have one, and dont wanna get a cam because i cant be bothered getting a double row timing chain.

haha yeah i know some vs drivers too..but it wasnt bouncin off the limiter it was just a bit of gravel, it was just a spin for about 10 metres.

never heard of it happening before mace? i dont want to send them back i just want to find the squeek, and yeah i got the new push rods and theyre in. i made sure they were seated right, one thing i didnt do was rotate the engine to a certain so its not compressing the spring? and ive looked them over theyre ok, not meaning to say your rockers are bad... another thing i thought is if the guy who owned my car beforehand got a different head gasket and its scraping on it?

[acarmody]

So you didn't rotate the engine to put each rocker in? And did you reuse the bolts each time? Because yes to either of these is a big mistake.

[nalchlan]

didnt rotate engine would that be likely to cause it?, but the rockers came with new genuine bolts. ill rotate the engine and tighten them all to see if thats the cause...only thing is now i have to get a bit of spin going to test it haha

[acarmody]

The bolts can only be used ONCE, once tightened they stretch and cannot be used again. So you either need a new set or you can which to reusable hex-cap bolts, which are about $1 each from any bolt shop. If you want to buy some than ask for 5/16" bolts, hand them over one of your current ones for length, and ask for the hardest steel they have it in (10.5 grade steel or something like that). Then use Loctite and do up to 23 ft/lbs. You can undo and redo these ones up as many times as your heart desires.

[Andrew426]

My VS is usually revved up to or near the limiter every day,and thats with standard rocker gear,I thought roller rockers were supposed to be better?.

Thats because they are not true roller rockers, they dont have rollers in the tips.

Try taking the rocker cover off and starting the engine. Its ok to do, doesnt make a mess or anything.

[soop]

Thats because they are not true roller rockers, they dont have rollers in the tips.

Try taking the rocker cover off and starting the engine. Its ok to do, doesnt make a mess or anything.

That doesn't sound right???

[nalchlan]

yeah i already had the car running with the covers off, they all get oil after a short while. roller rockers with roller tips are the ones with the roller tips

[Andrew426]

These are the mace units, right?



these are the yella terra ones



All roller rockers have roller tips, othewrwise they are just normal rockers with a different ratio.

[Brett_jjj]

Thats exactly right what andrew has posted above,theyve gotta have the roller at the end,hence the name "roller rockers".I wonder why everyone calls the mace ones roller rockers then when they clearly arent,they are just normal type high ratio rockers.And how many people have bought them thinking theyve bought roller rockers when they havent.

[nalchlan]

yeah... i thought that myself originally. i have them now too late haha . but thats beside the point, do you have any ideas on why they squeek?

[delcowizzid]

check they arnt opening the valves to far and hitting the valve stem seals allmost sounds like they are pumping all the prelode out the lifters and maybe squashing the seals then when oil pressure goes down at idle it goes away any idea how much prelode is on the lifters with the pushrods

[GTP 85]

I'll put in my opinions here

I agree with Andrew426, they are remanufactured with a higher ratio. To me a 'true' roller rocker is a complete new unit that has the roller tip, like YT style. I remember buying my 1.8 YT rockers about 5 years ago for $580. Beats me why remanufactured factory ones cost similar? BUT HEY! thats purely my own observation/ opinion...

nalchlan- ur squeeking could be: pushrod/s rubbing on the casting dags of the heads? or a fault with the rockers themselves? MACE just offered to honour warranty on them, so why not get an exchange?? for the price of postage, that a good deal.

[IBLOWN]

Can i just say i know what the problem is?

You need 5/16 diameter push rods. The stock ones are a bigger diameter.

Sometimes you can get away with running the same pushrods. The problem is the holes where the pushrods go through the head sometimes there is a little bit of casting flash hanging out which rubs on the pushrod.

You may only find 1 or 2 are rubbing but its safer to get new 5/16 push rods. Its a pretty loud squeek huh.

You can get them off steve at Mace. Not expensive.

BTW im talking from experience lol.