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3 Rear Vents
Posted: Sun Jul 18, 2021 8:29 am
by geoffjimbo
Are the 3 vents above the rear screen necessary or can you make a blanking panels and seal them to prevent water from entering
Re: 3 Rear Vents
Posted: Sun Jul 18, 2021 10:33 am
by xvivalve
They have a limited pressure release function when closing the doors and when moving will likely have limited cabin ventilation function by sitting in a negative pressure area, both despite the two fairly air impervious membranes both in the vent insert and roof lining itself.
I've never known water ingress through them; that panel does have propensity to rot, but mainly stemming from the friction fitting clips holding the vents in place and the rear lip trim in place that scratch the paint...
If your panel is rotten, the club do a GRP replacement panel which is supplied without the vent apertures having been cut out...
Re: 3 Rear Vents
Posted: Sun Jul 18, 2021 6:21 pm
by Macleesh
Being in a negative pressure area is good at the rear, it will pull stale air from the cabin?
Pretty sure I've seen a diagram showing the same, it may be in a workshop manual, will take a look and check.
Re: 3 Rear Vents
Posted: Sun Jul 18, 2021 6:47 pm
by cleverusername
xvivalve wrote: ↑Sun Jul 18, 2021 10:33 am
They have a limited pressure release function when closing the doors and when moving will likely have limited cabin ventilation function by sitting in a negative pressure area, both despite the two fairly air impervious membranes both in the vent insert and roof lining itself.
I've never known water ingress through them; that panel does have propensity to rot, but mainly stemming from the friction fitting clips holding the vents in place and the rear lip trim in place that scratch the paint...
If your panel is rotten, the club do a GRP replacement panel which is supplied without the vent apertures having been cut out...
That was pretty much the cause of all the rot on my boot and roof. My solution, after repairs, was to pack the trim with grease to keep the water out.
Re: 3 Rear Vents
Posted: Tue Jul 20, 2021 7:18 pm
by naskeet
cleverusername wrote: ↑Sun Jul 18, 2021 6:47 pm
xvivalve wrote: ↑Sun Jul 18, 2021 10:33 am
They have a limited pressure release function when closing the doors and when moving will likely have limited cabin ventilation function by sitting in a negative pressure area, both despite the two fairly air impervious membranes both in the vent insert and roof lining itself.
I've never known water ingress through them;
that panel does have propensity to rot, but mainly stemming from the friction fitting clips holding the vents in place and the rear lip trim in place that scratch the paint...
If your panel is rotten, the club do a GRP replacement panel which is supplied without the vent apertures having been cut out...
That was pretty much the cause of all the rot on my boot and roof. My solution, after repairs, was to pack the trim with grease to keep the water out.
Way back in the late-1970s or early-1980s, when I noticed rust in the areas around the push-on spring-clips (which scraped off the underlying paint) for the trim of my 1974 Triumph Toledo, I removed both before refurbishing the underlying steel & paintwork, but never replaced the trim owing to its propensity for retaining water and dirt. Those areas have never since rusted!
Although it would nice to reinstate the trim, I would be disinclined to do so, unless a reasonable way could be found that would not encourage corrosion again!?!