Classic Line

01/06/2026

New article related to valve springs! 🏎️
Learn more about their role, operating principle, specificities, wear and replacement. 🔩
This high technical part hides a lot of engineering secrets! Somehow negleted during the engine rebuild, they are key in the engine!
Bonus : Learn when you have to replace your Porsche 924 valve springs!❓

Valve springs are essential components in many internal combustion engines. Their role appears simple: ensuring that the valve returns to its closed

13/05/2026

Soon available!
Get ready 😃

27/01/2026

Our website is under maintenance.
Orders will resume from Wednesday, January 28th morning.
We apologize to our customers or the inconvenience.
Best

03/09/2025

Tech insights! ⚠️

Here is a quick animation of an approximated model of Porsche 924 valve spring excitation at 6500RPM. 🏎
Spring dynamical response is a complex phenomena, occurring at high RPM where the the coil inertia forces are no longer negligible in comparison to static forces. 💥
More details to come on these phenomena in our coming technical article. 🔩

Subscribe to our page to learn more about engine technology and Porsche 924 parts!

New products could be coming 👀

30/08/2025

You were expected for them, the tappets are almost ready to fly :)
Enjoy 10% discount price for the first 20 sets sold.
https://classic-line.eu/product/porsche-924-931-tappet-follower-046109311-pcg10931100/?swcfpc=1

01/07/2025

Here are finally some news about the valve tappets production !
200 euros for preorder sales, limited to 20 sets. 220 euros then for regular sales.
Available around september.

20/05/2024

Classic Line plans to provide brand new tappets for Porsche 924 all 2.0 engines (excl. CGT).

175€ excl. VAT the set of 8 for the first 40 sets sold (no VAT for European customers). Then, it will be 219€ for regular sales.

These tappets are cold formed for superior strength, at least as strong as OEM ones that are forged.
Material is OEM. Material treatment is almost identical to the OEM one. but shows both better friction and wear characteristics.
These tappets will be 10g lighter than OEM ones, but shows similar strength. This lightening is possible thanks to the manufacturing process, and to a detailed engineering study which lasted long months.
Clearance adjustment is as OEM (screw).

We need 40 sets to be secured by our customers to release these tappets. No deposit asked, just registration.

13/01/2024

At the start of 2023 we released engine valves for 924 2.0L NA models. An other part NLA for years (or at very high rates).
Here is an example of the delivery to an other international customer : valves, guides, keys, springs etc..

Retrieve our valves over here:
https://classic-line.eu/product/intake-exhaust-valve-porsche-924-2-0-na-046109601a-046109611a/

09/01/2024

Porsche 924 Turbo valve guides & retainers supply to business customer for less than half of OEM prices... Specific reference and very rare sourcing!
Others available on request
Only from Classic Line

06/01/2024

We started our activity by releasing new crankshaft sensors for Porsche 924 Turbo models (S2). It was a real challenge. This sensor was unavailable for about 20 years. After a such long period, various owners had little solutions to keep their cars on the road. Since there, many cars were bring back to life hopefully :)

https://classic-line.eu/product/crankshaft-sensor-porsche-924-turbo-2-carrera-gt-931-606-021-00/