JRSC belt path

[Lew]

Hello,

I have an atom 2 300 with the JRSC and here is the belt path :

atom_pulley_1.png (759.62 KiB) Viewed 1707 times

as you can observe there is an idle pulley, reducing then the contact area of the SC pulley to around 1/4th of the pulley.
I wonder if under load it can make the belt slip.

Checking other SC K20 on the internet I cannot find presence of this idle pulley:

Supercharged K20.jpg (170.19 KiB) Viewed 1707 times

5aa947bb36410_L4TVS-Engine1.JPG.65a58c3d7a2c75ce00d60e867fec72da.jpeg (64.64 KiB) Viewed 1707 times

Any thoughts ?

[Curves Junkie]

Here you can see the belt path at my Atom3

IMG_7078.jpg (790.67 KiB) Viewed 1664 times

The second pic I dont know was this engine mounted at an Atom?
Completely different position and manifold as at my car.

Third pic the same as the second and thats not a JRSC but the engine and SC looks good and yes the belt path looks much better than at your cars.

[alanoo]

You can remove the idler pulley, but be warned, belts are complicated to find.
I am now running a 2.9" Mercracing pulley, good size belt is a 7PK1196. No idea if there is an adequate belt for the stock pulley

WhatsApp Image 2022-06-11 at 16.28.11.jpeg (208.45 KiB) Viewed 1627 times

[HenryJS]

Just a quick word...

Dont remove the Idler Pulley! If you need some information about belt path, or a belt - let us know at the factory

[Sledgehammer]

maybe the CRC Belt Grip Spray will help....

[Yorkshire]

This is what i had fitted to my 3.5R achieves approx 80% belt wrap round but not cheap!

https://mercracing.net/shop/k-series-ad ... tensioner/

[Curves Junkie]

This is what i had fitted to my 3.5R achieves approx 80% belt wrap round but not cheap!

https://mercracing.net/shop/k-series-ad ... tensioner/

But you have to wait a very long time for delivery.
Jose, the owner of Mercracing, is not very reliable.
I bought once from him - never again. He had promised me 2-3 weeks delivery time - in the end it was almost 4 months that I had to wait.

[alanoo]

the mercracing tensioner is definitely the right way to do it.
For the "easy" idler removal, hundreds of Elises are running this way, but tbh it's difficult to find right belts and it may lead inadequate stress on the SC itself (as the auto tensionner pulls directly on it and not on an idler pulley as stock or with the mercracing system)