difference between 172/182 engine

[Chris205]

I need a definate answer to this one. A friends engine has just let go on his 182 and I'm looking for a replacement for him. I just need to know the actual difference between the two.

Is the head/block the same, I know the 182 had better inlets,exhaust manifold and engine map but will there be any difference in performance If I got a 172 engine and put the manifold/inlets off the 182 on

Hope you guys can help

Sorry I imagine its been asked many times before I did a search but no set in stone answer found

 

[Gray]

no physical difference on the engine blocks, apart from the "oil breather" or what ever people call it, on the cam cover... but these are interchangeable

 

[Chris205]

so the bottom end is the same, is everything the same on the head side?

 

[Gray]

yep!

 

[Dave.]

as said the only difference will be that you will not be able to fit the upper inlet from a PH2 to a PH1 because of the oil breather on the cam cover, oh and youll actually have a better head on a Ph1 engine as they had larger exhaust ports!

 

[Chris205]

as said the only difference will be that you will not be able to fit the upper inlet from a PH2 to a PH1 because of the oil breather on the cam cover, oh and youll actually have a better head on a Ph1 engine as they had larger exhaust ports!

oh really

 

[jinjur]

So what is the difference then, software? exhaustery? manifoldization? (yes, i made these up)

 

[ForceIndia]

I thought that the 182/172 weren't interchangeable?

 

[Will.]

4-2-1 exhaust mani on 182.

 

[maupineda]

Crank is different too, 182's seem to be heavier but better balanced, this is why they are so much smoother than 172's, and 182 is more torquey too (I think all differences play role here) But all in, should be a plug and play if you have the original 182 spares that have differences like cam cover, manis, etc.

 

[Wests Renault]

i have a 172 engine going cheap if interested

 

[bmh.01]

As long as you have the manifolds to swap over, shouldn't be a problem with fitting any 1*2 engine.

 

[Chris205]

Crank is different too, 182's seem to be heavier but better balanced, this is why they are so much smoother than 172's, and 182 is more torquey too (I think all differences play role here) But all in, should be a plug and play if you have the original 182 spares that have differences like cam cover, manis, etc.

How accurate is the info about the crank and smoother power delivery? I thought that was just down to the improved map

 

[f0xy]

I have a 182 bottom end and a 172 Ph1 head, using 172 Ph1 inlets etc. All fine - made 172.4bhp so spot on really. Ive had the crank out of it before, but cant say I noticed much difference to the couple of f*cked Ph1/Ph2 172 ones I have, but I wasnt really comparing to be honest.

Also used a 172 Ph2 head with Ph1 inlets before and that was fine too..

 

[sideways danny]

How accurate is the info about the crank and smoother power delivery? I thought that was just down to the improved map

there's definitely a newer version of the crank. The difference it makes in reality is speculation

You can fit a 182 plenum to a 172 engine very easily, you just have to leave out 1 fairly insignificant bolt and block off one of the vacuum take offs (whichever you dont use for the carbon canister)

 

[Chris205]

Is the differences on the 172 on all 172's or just ph1's?

Thanks for all the replies lads its a big help

 

[NickG80]

Hi guys, sorry to invade this thread, and apologies if this has been done 1000 times, but I've got the opposite problem - my Ph 1 172 has just let go. I thought the belt had snapped as when I went to restart I knew straight away that there was no compression. It was spinning over like there were no spark plugs.

However, when I got back I checked and the cambelt had not snapped - is it possible that it will have slipped and bent valves? I couldn't hear any metallic noises when turning it over.

I then made the mistake of trying to strip off the rocker cover - didn't get very far before I realised I'd gone about it the wrong way.

Anyway, I'm now thinking rather than mess around with this engine, it could be cheaper and quicker to drop in a 2nd hand engine so my question is, will the 182 engine go into my ph1 and mate up with the gearbox / all ancillaries etc? I did find a thread on this but have lost it, the only difference I could see was that breather module that sits on top of the rocker cover? It looks like the casting doesn't have a hole in it on the 182?

Wish I'd registered with this forum when I first got it - still, it looks as though I'll be keeping the Clio for a long time yet if I replace the engine. That's a good thing because bing a ph1 it's getting quite rare and I do love it. Even the wife loves it infact!!!

Thanks,

Nick

ps Chris, I'm in co Durham also, have you had any luck finding an engine? I missed one on ebay

 

[Fred@BTM]

it will, but use a phs1 engine, they're the best IMO

 

[NickG80]

Really? Is that because of larger valves / ports or something?

I just thought I'd go for as new as possible and have locally sourced a 182 engine, apparently 2004 with 54k miles. So would I be able to use my inlet, plenum etc but use the 182 rocker cover? Is the only difference that it hasn't got ahole drilled for a breather or something? Could I not just drill the hole?

Thanks again,

Nick

 

[Fred@BTM]

not that easy, milage and age on the engine isn't an issure, just change the belt kits and clutch and sling it in, phs1 172 engine are the quickest IMO

 

[NickG80]

Good point! I'd be looking at another £500ish for the belt kits fitted, plus clutch on top of the £650 for the engine then though I guess? This would take it to about £1250 but the car is only worth around that - hmmm :-(

I must admit this 172 does seem really quick, there is or at least was a very noticable kick at 5000rpm - so much so that I thought it'd had different cams put into it. Seems much quicker / noisier / more raw than the 182 I remember test driving when they were nearly new.

 

[Fred@BTM]

a clio 172 with a knackered engine is worth £500-£700

 

[NickG80]

Fred, must apologise as I've got 2 threads running on this now! Thanks for the help again though, do you mean £500-£700 stripping it down and selling bits or someone would be willing to pay that sort of money and take it away?

Got to weigh up my options here, the last thing I want to do is try and stick a 2nd hand engine in on a budget for it to go again the following week. Nor do I want to spend £1200 on the car if it's only going to be worth £1200 when it's done!

 

[Budgie]

£500-700 collected, depending on modifications, etc.

Buy a second hand Ph1 engine for £350 or less. Whack it in.

Split your old engine and sell for parts.

 

[NickG80]

I would if I could find one for that money - I love the car but it's beginning to look tempting to just get what I can for it and save myself a lot of work and money.

It's pretty standard, I spent quite a few quid returning it back to standard, it had been lowered, big exhaust, filter, lights etc. Now it's pretty much as it should be except for richbrook handbrake lever - that matches the pedals and gearknob anyway and a phase 2 airbox. Oh, unfortunately the alloys aren't original either though except the spare.