GRR

Meet the most radical Porsche 935 of all

06th September 2019
Laura Thomson
Challenge a renowned car builder to produce the most powerful Porsche
ever, and you won’t be disappointed... This is the 1982 Porsche 935 JLP-4,
the craziest Porsche 935 ever made.
Seen in action here, tearing up the "The Lakes GT" track day a couple of
years ago, it was built by Fabcar Engineering for John Paul’s JLP Racing
Team. Of Fabcar’s Dave Klym, Paul requested one thing: ‘the fastest
Porsche 935 possible for his son to race in the IMSA Championship,
regardless of the price’.
 
As Porsche had ceased production of the 935 in 1979, the JLP-4 was
constructed from factory-supplied components. However, by the time
Klym had worked his magic, only the roof and engine location remained
stock – the bare minimum for homologation purposes.
 
With an aluminium monocoque and steel tubular frame replacing the
935’s usual tubular space frame chassis, plus the addition of ground-effect
tunnels and huge ventilated disc brakes, the JLP-4 was effectively a GTP
car.
 
The latest evolution of the 935 engine, the 3.2-litre 935/80 was mounted
as far forward as possible behind the rear axle and featured two KKK
turbochargers and a large intercooler. In total, 840 horsepower was sent
to the rear wheels through an upside down four-speed gearbox.
 
Thanks to extensive aerodynamics, the resulting car looks nothing like the
original 935, and at $750,000, cost around three times the price of one.
However, the time and money proved worthwhile, as the model was
several seconds a lap faster than the space frame and non-ground-effect
JLP-3. What a machine.
  • Porsche

  • 935

  • JLP-4

  • The Lakes GT

  • Track day

  • Video

BOOK NOW

2025 Motorsport tickets now on sale
Video Alt Text
porsch-935-jlp-4.jpg

Historic

Meet the most radical Porsche 935 of all

06th September 2019

porsche_935_28091820.jpg

News

The Porsche 935 is back!

28th September 2018

bmw-m1-procar-onboard-spa-video-goodwood-24032020.jpg

Historic

Video: BMW M1 Procar vs. Porsche 935

24th March 2020

porsche-935-onboard-video-le-mans-classic-goodwood-25062020.jpg

Historic

Video: A dreamy drive of Le Mans in a Porsche 935

25th June 2020

porsche-935-onboard-video-le-mans-classic-goodwood-21052021.jpg

Historic

Video: Jaw-dropping Porsche 935 Le Mans helmet cam at night

21st May 2021

mondell-park-european-rallycross-video-elevensessw-goodwood-21052021.jpg

Historic

Video: Group B monsters battle door-to-door on track

24th May 2021

porsche-911-gt3-r-rennsport-main.jpg

Modern

Porsche 911 GT3 R rennsport is a 620PS track beast

29th September 2023

ferrari-512-bb-lm-porsche-935-k3-imola-video-main-goodwood-29072019.jpg

Historic

Video: On board a Ferrari 512 BB LM battling a Porsche 935 K3

29th July 2019