172 Clutch and Flywheel Help Needed

[Illianish]

Hello gents,

Recently got a 172ph2 with a slipping clutch and very high clutch pedal
Seller had no idea when/if the clutch changed.

Pulled the hearbox off to change it.

The flywheel and clutch have blue overheat spots.
Thee clutch plate seems to have some material left. (see pics)

My guess flywheel has been milled at some point (socket marks round the flywheel bolts) and then the next clutch kit refitted without account for increased gap.

There is a noticeable "step" or "lip" on the flywheel surface clutch working area - it is raised.

Question

How can I check if the flywheel was milled and if it was how much?

Do I need to mill it again for the overheat spots?

Background

The clutch was slipping heavily under low mid rpm and seemed to "catch on" on high high rpm.
The gearbox did not watch the VIN (JC130) - JC129 actually fitted.
I don't believe the clutch cable was changed. Is there difference between JC129 vs JC130 clutch cables?
May that be the root cause and should I get a new cable?

Thanks!

 

[MAXRUNDOWN]

It doesn't look like the flywheel has been refaced before but it does need it now.

Your rear main seal is leaking, get the flywheel refaced, new RMS and an OEM spec (Valeo or LUK) clutch kit

 

[Illianish]

It doesn't look like the flywheel has been refaced before but it does need it now.

Your rear main seal is leaking, get the flywheel refaced, new RMS and an OEM spec (Valeo or LUK) clutch kit

Hey, thanks for responding!

There is a positive step on the flywheel eg the friction area is raised relative to the flywheel pane.
Is that how 172/182 OEM flywheel is from the factory?
Do you know the positive step spec?
When I take it to machine shop -
I need to maintain the positive step on the flywheel for the new clutch to work, correct?

 

[Illianish]

Got the RMS ready.
How critical is it to replace flywheel bolts?
They are only on order and 3 weeks wait..

 

[MAXRUNDOWN]

Yes, the friction surface is raised compared to the pressure plate mounting face, it is best practice to remove the same amount of material from both faces, in reality though if it's only a small cut - 0.010" or so, it won't make any difference.

You _should_ replace the flywheel bolts.

Clutch Cover Bolt | Renault Clio 172 182 197 200 F4R 2.0 | 7703101548

Genuine Renault Clutch Cover Bolt. Supplied individually. These bolts attach the clutch cover to the flywheel. Renault part number 7703101548 Fits the following vehicles: Renault Clio 172 Renault Clio 182 Renault Clio 197 Renault Clio 200

frogjammotorsport.co.uk

ARP Flywheel Bolt Set | Renault 172 182 197 200 F4R 2.0

ARP Flywheel Bolts. Set of 7. Fits Renault Clio 172, 182, 197 and 200 models 16mm 12 point socket. Unlike the standard bolts these are not fully threaded, they have an 8mm shank length. Custom manufactured and therefore supplied loose, to install we recommend medium strength loctite on the...

frogjammotorsport.co.uk

 

[Illianish]

Before cutting it, ChatGPT says there is "range .5 to 1mm" and the sweet spot is .75mm for the step up for 215mm clutches, citing KAM racing & PMS aftermarket "made to oem spec" .
Can anyone confirm the .75mm spec?
In the meantime Ill measure what kind of step size I've got.