Urgent - dephaser pully rattle

[Trackslag172]

Please help
Does a new dephaser pully for a 172 have moving parts?
Does it 'rattle' when held in your hand?
I have a funny rattle noise from the cambelt area after a cambelt/dephaser change and i seem to remember the pully had moving parts so suspect that

Cheers,
Tim

 

[LeeRS]

They rattle when they are on their way out. Shouldn't really be rattling if its just been fitted.
Usual question... Who fitted it?

 

[Trackslag172]

Is there a mod that uses a laguna dephaser pully?
A delete kit of some kind delete kit?

 

[Trackslag172]

Thanks for looking and thanks @LeeRS for the reply.

We have just sussed it out. I bought a 172 genuine dephaser pully and gave it to my mate with the full kit to replace. Turns out my car in a previous life had a 1.6 laguna head fitted to increase the compression. But the laguna head uses a different non-vvt dephaser pully. So my new 172 pully has now made the engine run lumpy and with a rattle! So tomorrow its all coming apart again to put the old solid laguna pully back on. Should all be ready for brands on sunday with any luck!

Lesson learnt, always compare new and old engine parts BEFORE fitting!!

 

[bloke]

pic of the head

 

[Trackslag172]

Whys that, im not with the car now? If you think i'm wrong let me know, i am no expert just an enthusiastic amatur! we haven't taken it apart to confirm this yet, too late tonight, but as it has a laguna dephaser pully i think we are on the right track.

Cheers

 

[bloke]

so you gave mate a f4r dephaser but it had a standard k4m pulley on so fitted the dephaser but you've just said 'it has a laguna dephaser'

pic of head to see if it's a dephaser head or standard one.

if it was noisy straight away and it's an f4r head my money is on your mate missing the crank locking hole and using the balance drilling instead.

what pulley was on the inlet cam, solid or dephaser?

was the cam seal changed? if it has a standard pulley on and you have a standard pulley oil seal on when you put a dephaser pulley on it pushes the seal in and makes a mess of it as the centre bore is the same size as the cam itself, cam runs on the seal, on dephaser the dephaser runs on the seal so centre bore is wider on the seal. (if that makes sense)

 

[Dan@SJM]

1.6 head wouldn't fit.

 

[Trackslag172]

@bloke cheers for the detailed reply, i wish i had the knowlege to understand it all!

Removed dephaser pully was renault part 108671 which i googled and found it was a laguna pully.

New pully was part no 8200782671 which is a 172 dephaser pully

After that you have lost me, I am just an amatur. I will send the link to this thread to my mate and he may reply using my account, so if I suddenly sound like I know what I'm talking about, thats why.

@Dan@SJM
Cheers, looks like our theory was wrong then, we will keep checking.

I will get my mate to take some pictures of the head but i wont be able to post them till tonight as i'm working all day.

Thanks guys, it never fails to amaze me how helpful the people on the forum are.

 

[bloke]

108671 is the correct dephaser for the sport, got two old ones in my scrap here.

Looking more like crank has been locked in the wrong place.

 

[Dan@SJM]

Or incorrect tools used meaning it's advanced the cam and it's now clipping valves

 

[Chrisgti6]

108671 & 8200782671 are the same part, it's shared across many cars with the F4R engine. Take a look at this eBay advert. It has all the part numbers for reference, and the list of cars.

http://www.ebay.co.uk/itm/RENAULT-C...-16V-DEPHASER-PULLEY-8200782671-/360869783192

 

[R3k1355]

You can't just 'have a mate' do the cambelt on a 172, it so often ends in tears.
It needs to go to a specialist to get it sorted out, but if it's running that bad you might f**k then engine up driving it there.

 

[dangerous dave]

You can't just 'have a mate' do the cambelt on a 172, it so often ends in tears.
It needs to go to a specialist to get it sorted out, but if it's running that bad you might f**k then engine up driving it there.

You can..

It doesn't.

You just need to make sure they know what they're a doing.. People act like the 172/182 is the first and last car to have ever had a dephaser pulley.

i don't know how most Clio owners get through the day living in such fear..

 

[Goodj]

You can..

It doesn't.

You just need to make sure they know what they're a doing.. People act like the 172/182 is the first and last car to have ever had a dephaser pulley.

i don't know how most Clio owners get through the day living in such fear..

They read something on the internet once.
got to be true

 

[mikekean]

You can..

It doesn't.

You just need to make sure they know what they're a doing.. People act like the 172/182 is the first and last car to have ever had a dephaser pulley.

i don't know how most Clio owners get through the day living in such fear..

The issue is finding someone who actually knows what they are doing, that's usually someone fairly competent that has done one before or a very methodical conscientious mechanic/diyer that is capable of understand how the engine works and the process of carry out the job.

It's very easy to forget how much knowledge and experience you actually have and what seems like a simple job to you or I can easily be messed up by someone else with very little knowledge of the job.

 

[Torque Of The South MS]

Hiya Fellas
Sorry not really introduced myself on here as of yet but im Bob from Torque of the south motorsport.

We were the ones doing the dephaser & belt on Tims car.
Don't normally touch the frog stuff as mainly deal in the big power jap stuff such as gtrr35, Skybarges, pulsar gtir and so forth.

My mechanic had never come across doing a dephaser kit on one of these before as neither had I if im honest with you but as the fella said above ''its really not rocket science if you've half a brain'' lol
So in a nutshell we did the dephaser and belt plus a fresh water pump also but the dephaser itself (new one Tim supplied) would not stop rattling which obviously was an issue. Anyway we decided to remove it again and inspect it then the problem and issue he was having earlier became apparent and infact the knock which he assumed was the dephaser originally was only partially correct.
Only telling you guys as may help some of you out for cars you do yourselves in future.

The main knock was due to poor head oil flow which was causing the lifters to rattle and excess wear on cams, we actually spotted some particles blocking cam to dephaser oil flow also so back pressured the oil galleries etc to try remove debris. Once we had done this we then (prior to fitting) primed the dephaser itself with oil then fitted it which now has remedied the issue he was having. We knew the timing was spot on but Tim seemed to think that the pulley was from a Megane to which I wondered whether someone in the past had formerly fitted a 1.6 head to increase comp ratio but now I know this can not be done, as said we are no experts on these particular engines so you learn info like this along the way.
Tims car made virtually 180bhp on our dyno which I thought was quite high for an old 172 so that's what made me wonder about the head also.

There was also another small issue that Tim had unknowingly caused in his quest to save weight which made the car run and idle not at its best lets say which we noticed, that issue was easily resolved after slapping Tim round the head with a big wet cod:smile: Not gonna tell you what it was he had done as hes a nice bloke and wants to learn everything about his car, so he can tell you himself if he wishes.

Anyway Sunday came along and off to Brands hatch we all went Tim drove extremely well and car is damned quick for a frog mobil, Even just purchased a 197 myself im that impressed with his 172.



off topic but bit of a laugh none the less
Accolades of the Day went to my arch race rival in his R35 who would have beat the legendary BTCC driver Tom Chiltern who was giving passenger rides ''Hot Laps'' at £25 a pop...........unfortunately after my mate Ben reeling Mr Chilternm in at an alarming rate of knots in the 900bhp highly modified Litchfield GTR he decided to take the girly way out and pit when Ben was hanging off his bumper ready to take him out on clearways:down:
Im now trying to wind up Mr Chiltern so they have it out on one of their / our test days next year and I would not back against Ben beating him as certainly had the better of him on the day and Mr Chiltern damn well knows it too which was why he took to the pits. Just to rub salt in his wounds we were going to advertise ''Hotter Laps'' and undercut him a fiver:laughing:

Probably be my one and only post on here until next year anyways lol
But met some of you guys through Tim and all seem like a fair bunch of lads so we may organise a rolling road day for those interested next year dependant upon our workload / dates as extremely busy at the moment.
Will let Tim sort it out with mods/admin on the forum, but just to let you guys know we are a genuine company which was only formed a year ago after combining 3 other successful long term car businesses to form ''Torque of The South motorsport'' based in Southend on sea, Essex. The dyno we have 'in house' is a brand new Dyno Developments 4wd dyno the most accurate on the market today so if anyone needs us for that or anything else car /marriage guidance related:grin: either just drop us an email or have a word with Tim 'Trackslag172' on here and sure he will pass on your details
Going now as wore out my big fat digit typing all this
ATB for the New Year guys :up:

 

[DaveL485]

The issue is finding someone who actually knows what they are doing, that's usually someone fairly competent that has done one before or a very methodical conscientious mechanic/diyer that is capable of understand how the engine works and the process of carry out the job.

This is absolutely true. I do 1*2 belts on occasion, as long as you know the fundamental points/watchouts it's absolutely fine. Trouble is, one of those points is quite counter-intuitive (tensioning the belt before you tighten the cam pulley retaining nuts).