Clio 172 oil pump.

[prodriv3r84]

Hi,

I bought a used Clio 172 ph2 engine for my trackday car, I'm in the rebuilding process. I notice the oil pump is a 7700600252, some people say its not the correct oil pump. the correct oil pump is 150100565R .

Any anyone knows the deference between 7700600252 vs 150100565R oil pump?

Should I keep it or change it? Any aftermarket good option?

Thanks

 

[robzracing]

You’ve got the correct one. At least that’s the same as mine.
Worth doing the mod to it to help oil pressure while you’re at it


Sent from my iPhone using Tapatalk

 

[prodriv3r84]

You’ve got the correct one. At least that’s the same as mine.
Worth doing the mod to it to help oil pressure while you’re at it


Sent from my iPhone using Tapatalk

Thanks, with 24 teeth?
What mod are U talking about?

 

[robzracing]

Haven't counted the teeth but it's standard 172. I've got a couple of them, both the same.

oil pressure mod effectively increases the tension in the spring in the pressure relief valve helping to keep the pressure up.

 

[prodriv3r84]

Perfect!!

Thanks

 

[Mr Trailer Man]

What depth did you make the new slot Rob?

 

[robzracing]

What depth did you make the new slot Rob?

Was a while ago now but I think it was about 2.5mm. Its guess work really.

 

[Mr Trailer Man]

Was a while ago now but I think it was about 2.5mm. Its guess work really.

I believe the standard slot is about 4mm?

 

[robzracing]

I believe the standard slot is about 4mm?

That sounds about right.

 

[bloke]

the mod will help preload the plunger but it will not stop no2 big end from eating itself.

 

[Mr Trailer Man]

the mod will help preload the plunger but it will not stop no2 big end from eating itself.

Any cure for that?

 

[bloke]

Any cure for that?

Looking into a couple of things at the mo. Not sure if anything will 100% stop it happening but just got a fresh build we are going to try a couple of things on and see if it improves pressure.

 

[prodriv3r84]

And about 150100565R? It is the sames as 252?

I use Motul 15/50 on my race car. But I feel it low at idle.

 

[Mr Trailer Man]

And about 150100565R? It is the sames as 252?

I use Motul 15/50 on my race car. But I feel it low at idle.

Same pump the part number is just newer.

 

[NorthloopCup]

There’s sooooooooo many reasons why the f4r suffers with low oil pressure issues/spinning bearings etc etc. Bearing clearances, oil pump clearances/tolerances, harmonics, s**t flexible cranks, vvt solenoids - we’ve tried all sorts of ways to stop f4r engine failures.

 

[prodriv3r84]

I can see some engine bearings from Ph1, better than Ph2, I can see different non forged cranks on Ph2 engines. Maybe some extra deflection on crankshafts.

How the Clio 197 engine bearings perform? better than 172?