Are there any secrets to how you get the top tailgate to seal tight on a Sandman Panelvan. I have put a new rubber on, but fumes get inside while your travelling.
Are there any secrets to how you get the top tailgate to seal tight on a Sandman Panelvan. I have put a new rubber on, but fumes get inside while your travelling.
Typically it's the lower tailgate that lets in the fumes.
Kicking the exhaust so it exits out the corner might be an option too.
Our HQ has the exhaust out the side and it makes no difference,fumes still come in.on our old van we had a fitted mattress that was tight against the lower tailgate and that stopped the fumes or just get a thick piece of foam(just a strip) and when you close the tailgate put the foam between the tailgate and body.if you look from the inside out with the tailgate closed there is a gap between the gate and body down the bottom and that's where the fumes come in
I drove WB vans when brand new and we never had an issue with the tailgate open or closed. My old man owned a pet shop and we'd regularly transport birds, often very sensitive ones like canaries and never had a problem. So there must be something else going on too other than the exhaust location, like the flow through ventilation not working right maybe?
Is it better if you have the fan on to pressurise the cab?
It is. I often drive with the top tailgate up (just like the old days.....) and if I stick the fan on there is no noticeable fumes.Originally Posted by wbute
It probably still has a lot to do with exhaust exit location and tailgate seals for a lot of vans because there seems to be a great discrepancy between what some people say (in other related threads) about fumes. Some say they have no problem, while others are getting gassed.
I'm glad it's no problem on my van because I love cruising with the tailgate up.
Vans.... This is the 2nd time round the block, 40 years later! talk about turning back the clock!
I think it may be about the length of the exhaust outwards from the beaver panel/ or corner if you have it diagonal. MY HJ Wagon never let in fumes with its old rusted pipe that stuck out about 8 inches and bent in a rusted out fashion to the passenger side - 202 in those days (used to cruise interstate with the rear widow open in summer no probs). When I put on a two inch extracted system off another wagon, the end of the pipe then sat pretty much level with the tail edge of the rear bumber, doesnt blacken the bumper, but with the tailgate widow down, exhaust fumes are enough to cause passengers to complain. Which is good, becuase it stops me doing it, CO1 makes you sleeepy... and er'm... also kills ya pretty quick and easy through respiritory ingestion!!! I think its logically probably a case of getting the exhuast pipe to extend as far beyond the rear of the car as possible, or if you go for a side port behind the rear wheels (where that is legal- dunno if it's not though) as you design it to flow the gas away hmmn - anyone got a wind tunnel?
Better still, are there any members who have no exhaust emmissions in the cabin with the tail gate open, (no fan on) and who would like to contribute a picture of their exhaust placement? This could be a really useful thread.
Last edited by SLR_dave; 29-10-2014 at 02:45 AM. Reason: Clarity
The rear of the car has a swirl of air caused by the lower pressure. The air rushes in to fill the the gap so to speak. This sucks the exhaust gas into the same area. If you don't have proper ventilation in the cab to increase the pressure then the exhaust fumes will be rushing into the lower pressure of the cab. You can see it happening on a dirt road. If you drive a ute on dirt the tail gate is always dusty. If you put the tonneau on then the back fills with dust. If you undo the tonneau and fold the rear up under the rib you get no dust in the back as the air pressure is equalised.
Unless you sealed the tailgates shut with sikaflex I think you would really need the fan going to pressurise the cab.
I never smell fumes driving (but I could have a lousy nose) but others in the back could (in the days you could do that) if we had the front windows down. With front windows wound up and fan on didn't have a problem. So I think that's support for WB dirt road research and pressurisation. I actually get the same problem for back seat passengers (and fix) with my Monaro.
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