Look at my air filter!
Look at my air filter!
Author
Discussion

supermono

Original Poster:

7,457 posts

274 months

Wednesday 25th December 2013
quotequote all
XJR air filter completely black!



This car has a full and perfect supplying main dealer history. When is the filter supposed to have been changed? My first dyno run before I did anything at all to the car apart from checking oil was 377 but dyno man said it was rich. No surprise there!

Since then it had a new s/c belt/kit and am about to do squeaky serpentine belt, I've done the supercharger oil too and will get shell helix ultra in. I'll run it again after I've done.

Be interesting to see what difference that makes.

But has anyone seen an airfilter like this? The engine side is clean so it's not blowby and about 3k miles since I bought the car it uses no oil at all so I doubt ring trouble anyhow.

To me it looks like 100k and 6 years of crud.

Hooli

32,278 posts

226 months

Wednesday 25th December 2013
quotequote all
That does look impressively dirty, has to have been in there a few years I'd have thought.

Jaguar steve

9,232 posts

236 months

Thursday 26th December 2013
quotequote all
X308? The supercharged engine should have it's air filter changed every 20k.

That clearly has not.

supermono

Original Poster:

7,457 posts

274 months

Thursday 26th December 2013
quotequote all
Jaguar steve said:
X308? The supercharged engine should have it's air filter changed every 20k.

That clearly has not.
X350 but if 20, 40 or even 60 I bet it's never been done!

Tomorrow I have a road trip so it'll be interesting to see the effect. My reading told me ages ago that peak torque requires maximum airflow so I guess I might be getting a bit more midrange which would be nice.

supermono

Original Poster:

7,457 posts

274 months

Thursday 26th December 2013
quotequote all
Jaguar steve said:
X308? The supercharged engine should have it's air filter changed every 20k.

That clearly has not.
X350 but if 20, 40 or even 60 I bet it's never been done!

Tomorrow I have a road trip so it'll be interesting to see the effect. My reading told me ages ago that peak torque requires maximum airflow so I guess I might be getting a bit more midrange which would be nice.

supermono

Original Poster:

7,457 posts

274 months

Thursday 26th December 2013
quotequote all
Jaguar steve said:
X308? The supercharged engine should have it's air filter changed every 20k.

That clearly has not.
X350 but if 20, 40 or even 60 I bet it's never been done!

Tomorrow I have a road trip so it'll be interesting to see the effect. My reading told me ages ago that peak torque requires maximum airflow so I guess I might be getting a bit more midrange which would be nice.

gamefreaks

2,058 posts

213 months

Saturday 28th December 2013
quotequote all
Is the filter oily or it just road-grime?

If it's oily, might be worth having a look at this thread: http://www.jaguarforums.com/forum/xk8-xkr-17/oil-a...

Basically, there should be oil separators in the cam covers for the breather hoses, but they're missing on some cars and so oil gets into the intake system...

fausTVR

1,442 posts

176 months

Wednesday 1st January 2014
quotequote all
Looks like you follow diesel cars around too closely. smile