best way to replace dephaser on 172

[james199106]

Whixh way would be the best way to replace ma dephaser pulley to do it while the engine is in the car take the cylinder head off or to take the engine straight out

 

[Mr R.]

Why would u want to remove the head or engine for that matter?

 

[MartinR]

Grinder and a lump hammer, cut a hole in the side of the car

​Take it to a specialist

 

[Dan@SJM]

Erm, you don't need to remove the engine atall. But I'm worried that you don't have the correct tools or know the correct procedure if your having to ask this.

 

[Kelv]

My recommendation would be to ring a respectable specialist near you, drop the car off to them at a mutually agreed time, pick the car up once completed, and cover said specialists hands with gold coins!

 

[Mr R.]

Its a job thats done while it's all in the car.

Need to replace the Cambelt kit, aux belt kit, crank shaft bolt and cam pulley fixings which comes as a kit with the cam oil seals.

Oh also engine oil and filter.

Also need the renault locking tools.

 

[james199106]

Thats why am asking so I dont f**k it up and I cant afford a specialist can only just afford the pulley

 

[Shedspeed]

You don't need to take the cylinder head off, just do a cambelt change and replace the pulley at the same time, it's not something to attempt without the specialist tools and knowhow though, if you get the timing wrong, it can be game over, and if it's not absolutely correct it'll lose power


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[Mr R.]

Thats why am asking so I dont f**k it up and I cant afford a specialist can only just afford the pulley

Forget it then.

You will end up smashing the engine to bits.

 

[Canary172]

Thats why am asking so I dont f**k it up and I cant afford a specialist can only just afford the pulley

Save up your money and get it done by a specialist. An old dephaser won't do any harm in the mean time!

 

[james199106]

Ive done timing before when I was at college and on a few of ma old cars just want to know which way would be easier and how to take the dephaser pulley off

 

[Ryanph1rs]

I'd reccomed the use of tools a can of tuna and alot of jägermister so atleast when it all goes tits up you can claim you were drunk..... But serious alot of specialist tools are needed dont try this at home....

 

[Mr R.]

You need the locking tooks as the pulleys free wheel once un done.

Its not like doing a old car where the cam pulleys have key ways fixing them in place.

 

[Adam G]

Uness you have a mate that GENUINELY knows what he's doing and has the correct tools. I'm afraid you're looking at a £600+ job.

 

[Dan@SJM]

Timing these cars is entirely different to a normal car. Maybe you can only afford the pulley, but you'll be looking at over £1100 in parts when you've fucked it up and it obliterates the valves.

 

[scotty2hotty81]

Sell the car, buy something you can afford.

 

[Mr R.]

I'd reccomed the use of tools a can of tuna and alot of jägermister so atleast when it all goes tits up you can claim you were drunk..... But serious alot of specialist tools are needed dont try this at home....

I bought the tools and did mine at home, the case he is the lad has no money to do the job correct.

 

[Dan@SJM]

I bought the tools and did mine at home, the case he is the lad has no money to do the job correct.

Thought admit, that doing it like that hasn't really saved you any money. Maybe on the the next change. But if you only plan on keeping it for 1 change it won't have saved you anything.

 

[Ryanph1rs]

Just to point out if you can only afford the pully then what's the point? If you can't afford a belt kit as well and while its in bits you may as well do the water pump its like £300 in parts and by then you might as well go full hog and take it some place... Even if you took the engine out and took it somewhere to save on labour.... But replacing the pully and not everything else is like shaggin the local cum dumpster without a rubber.

 

[james199106]

When I got the car it came with the cam kit and it had tge water pump changed about a month or so ago

 

[Mr R.]

Thought admit, that doing it like that hasn't really saved you any money. Maybe on the the next change. But if you only plan on keeping it for 1 change it won't have saved you anything.

Its my car and my hobbie mate, im very fussy and didnt want anyone else working on my car tbh.
I worked on Aston martin for 8 years and I now work for the Financial Times as an engineer for the last 13 year's.

It wasn't so much about the money as I knew I could sell the tools on. (That was 3 years ago now)
Anyway next on the list is 421's, ported head and ARPs.
Then AT power TB and management. So ill be using the tools again.

 

[Ryanph1rs]

I'm not an asshole and I don't mean to sound like one so sorry but you're playing with fire on this one in competent with tools and engines I built a vts from the ground up and it was great fun .... These f4r engines are insane the vvti system isn't something you want to be wrong on especially ( not beating around the bush ) the the absolute bolocking its going to have a spirited drive one day may lead to you being 130quid for a pully down and in need of a new engine and hopefully you'll be okay and won't end up dead in a ditch from the fact the brakes have gone and its all seized up..... The pully won't break just drive it half sensible and save to have it changed in a garage I supplied parts and payed 240 to have it all changed .... I'm sure if you spoke to dan@sjm or Fred or some one else on here they'd be able to best advise you and you could come to an agreement there

 

[james199106]

Which tools would I need coz ive seen that I have to lock the cams off at the back near the gear box http://www.saledoo.co.uk/renault-timing-tool?t=su-3-310473_5337150821 which kit off here would I need

 

[Shedspeed]

2 clues:

1: it's an F4r engine

2: cylinder no.1 is the gearbox end

Welcome to Renault, where nothing is as it seems!


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[Shedspeed]

In theory, there's no reason why a competent mechanic shouldn't be able to do the job themselves, the specialists all had their first one to do at some point.
The main issue is that there is a substantial amount of power to be gained or lost through the fine timing of the cams, and I'll be an orang-utang's auntie if any of them are going to let you in on those settings!


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[james199106]

Which tools would I need coz ive seen that I have to lock the cams off at the back near the gear box http://www.saledoo.co.uk/renault-timing-tool?t=su-3-310473_5337150821 which kit off here would I need

 

[james199106]

Ive ordered the timing tools and ive got the cam belt kit goimg to order the water pumo is tgere anyone that will tell me how to get it bang on as I dont want it to go wrong like I said ive only owned the car a few days and havent even drove it that much

 

[Carlv8415]

Serious question: Can you remove the head by removing the Dephaser and just moving the belt out the way? Or do you have to completely dissemble the car like have the belt changed completely? As a rule I think it's bad to re tension a belt.

 

[zeta]

I can count to potato

 

[Jaff.]

I predict failure

 

[Shedspeed]

Ok, the main problem is that there's no timing marks, everything has to be just right and there's absolutely no margin for error, the F4r is possibly one of the hardest engines to time up and if you get it wrong, the whole top end is scrap and potentially the bottom end too in worst case scenario.
Doesn't end with the cam timing either, the aux belt and tensioner/idler should be changed at the same time, and if that isn't done or not done properly, you risk aux belt failure, which will knock the cambelt off.
It really isn't worth it. If you get a specialist to do it, you're not just paying for the job to be done, you're paying for someone to blame and foot the bill if there is an issue (providing everything recommended is done)


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[MicKPM]

Uness you have a mate that GENUINELY knows what he's doing and has the correct tools. I'm afraid you're looking at a £600+ job.

Not that bad anymore... £524 on a FF and £450 on a Cup with us using genuine renault parts.

Mick

 

[Mr R.]

Which tools would I need coz ive seen that I have to lock the cams off at the back near the gear box http://www.saledoo.co.uk/renault-timing-tool?t=su-3-310473_5337150821 which kit off here would I need

You need the pin to lock the crank, the horse shoe is only to aline the cams/check the timing and not to lock them.
You also need the tool to lock the pulleys so that they can be un done/re tighten.

 

[105e]

So is there not a guide (accurate) on here at all?

 

[Stefan.]

Oh dear!!

These cars are becoming so cheap, it is a shame. why have you bought a spot you cannot afford to run? or worse picked one that needs the belts doing when there are sooo many out there that probably have been done

 

[Dan@SJM]

No.

And any of those tools won't give the correct timing you need the GENUINE ones not the cheap s**t you've posted.

 

[l33th3tr33]

R.I.P to another rs.


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[Dan@SJM]

Serious question: Can you remove the head by removing the Dephaser and just moving the belt out the way? Or do you have to completely dissemble the car like have the belt changed completely? As a rule I think it's bad to re tension a belt.

No you'd need to remove the dephaser and cam cover etc.
And yes it's EXTREMELY poor practice to retension a belt.

 

[MartinR]

From your other thread i have read. You have oil consumption problems rattling and a misfire?

Imo its already fucked ,before you attempt replacing belts and what not take the car off the road ,save some pennies then get it checked out by someone who knows what they are looking at.

You will get it wrong.!!

 

[martynp]

Did you learn how to lap 16 valves in at college? I'd order a laping in stick and 16 valves if I was you cause reading this sounds like you'll need them. I know lots of mechanics who wouldn't even take this job on.