New GTT/JCW Hybrid Air Filter Upgrade !+pics

[roland2003]

Hi Guys, furthering a question yesterday from an M2 user as to 'Was it possible to offer some sort of GTT upgrade for JCW filter owners?'
We have come up with this, a kit that;-
(A) Replaces the restrictive JCW paper element with the same 'High Flow' cotton guaze element used on the GTT Cold Ram Kit.
(B) Replaces the metal blanking plate on the end of the JCW filter with an additional 'Reticulated Foam ' filter; This results in increased surface area AND more direction possibilitys for the air to enter from.
(C) An element that can be cleaned & re-oiled when dirty rather than having to buy a new one.
In the last pic (sad face drawn on) you can see that JCW blank the round inlet from the scuttle area to the lower airbox that stock box cars are blessed with. I would advise remove this too. In essence below 4500rpm the stock box has more venting into the airbox than the JCW !
In our earlier filter comparison thread ,this bung was removed, so I inadvertantly gave the JCW another small advantage in the test !.

The hybrid upgrade does not have the internal rampipe that the GTT Cold Ram Kit has,nor is the airbox as large,but still ,I am expecting a worthwhile improvement with the 'GTT/JCW Hybrid' over the JCW. I will test later for pressure drop (restriction) using the vacuum guage as per previous method
Best Regards Roland Gt Tuning

[Lucky Dave]

Thats great news!

I removed my blanking plug from my JCW airbox before I had your conversion done!

I would be very interested in your mod if the results show a good improvement.

12,000 miles and getting faster! Thanks Roland.

[jamestyler]

how do i remove the plug. sorry for my ignorence, but does it just pop out, screw out or is it hack saw time

[Lucky Dave]

The blanking plate sits inside a fold in the rubber gater between the airbox and the plastic engine bay shroud.

If you remove the air box its very easy to pop out, im not sure if it will pop out with the airbox inplace, perhaps with the top removed?

[jamestyler]

Cheers, gives me another project for the weekend, better than revising for an exam I have on monday!

[62Lincoln]

The list of my next shipment from Roland grows another potential member.

[matfrost]

Why do JCW fit the blanking plug, when it is not on the standard unit? It seems pointless JCW fitting this bung if it is not going to be a positive thing doing so. (Although I can't think of an obvious reason)
Just my odd thought.

[Loui]

so roland what sort of money are we looking at for this?

[Shorty]

I'd be interested in the cost too

[snoopy]

Quote: Originally Posted by matfrost

Why do JCW fit the blanking plug, when it is not on the standard unit? It seems pointless JCW fitting this bung if it is not going to be a positive thing doing so. (Although I can't think of an obvious reason)
Just my odd thought.

Induction roar and the need to pass drive by noise testing. as it happens the testing is only conducted at a RPM's when flat is closed.

[roland2003]

Ok Guys some test results. Weve just been out on some very muddy back roads testing at WOT in third & forth at 6500rpm.
Pressure drop for the JCW/GTT Hybrid filter element upgrade was -0.8psi.
This is marginally better than I expected which shows that hideous metal capped paper element is losing power.Because the results are IMO very worthwhile we will definately include this as a new GTT product . Initially we will offer them as a 'supply & fit' service,later on we will offer as a DIY kit with full fitting instructions. The kit (parts) include the blue cotton gauze element, the reticulated foam secondary 'end cap' filter ,the alloy clamping disc and the 3 S/S tension springs . In fitting the kit the only mods to the airbox itself are the 3 small holes in the front end of the airbox lid where the 3 springs need to hook onto.Not visable unless your realy looking for it ;we can even paint the ends of springs black where they poke through if you like! Regards Roland
Pics coming.........

[roland2003]

Hi guys, heres some pics 'on the car' all the GTT ingredients are concealed within the JCW airbox. Pic 2 shows new custom GTT paint job .
Regards Roland GT Tuning

[Andy@Ross-Tech.com]

What does the base of the filter press against to seal it from unfiltered air? Is the airbox surface itself flat enough to do that?

[roland2003]

The element has a built in O ring type sealing surface that moulds (within reason) to contour changes. We did check in a darkroom (the toilet )by shining a maglite from outside in & inside out to see if any light (gap) existed, and was ok. However we may put a small localised smear of silicon sealant right in the corner for a belt & braces fit.
Regards Roland

[Shorty]

Quote: Originally Posted by roland2003

The element has a built in O ring type sealing surface that moulds (within reason) to contour changes. We did check in a darkroom (the toilet )by shining a maglite from outside in & inside out to see if any light (gap) existed, and was ok. However we may put a small localised smear of silicon sealant right in the corner for a belt & braces fit.
Regards Roland

Looking good

Any idea how much it's likely to cost?