Axistr new project

[Valencia]

Cowl Plenum

[wbute]

Those gaps look good on your cowl. Perhaps the guard might need to follow the curve into the door a bit better. Not sure what you mean about the flange?
It’s actually the cowl panel. The plenum chamber is the big chamber that the cowl forms under it (as Valencia suggested).

[axistr]

I will stand corrected there Gene for the Holden terminology , its the heavy vehicle mechanic coming out in me. If I ordered a cowl for a truck I would have received a radiator fan surround, or a forward facing outer cabin air duct for fresh air supply. If I ordered a scuttle tray 9 times out of 10 I would have got a lower screen panel that ducted any water to the firewall drain tubes. And if I ordered a pellum/Plenum it would have been the complete assembly. Its a bugger that different manufacturers call the same parts by different names. If you ordered a top pellum/plenum cover for a Kenworth they call it a Garnish panel. International trucks call it a scuttle cover panel, go figure.

wbute The gap on the left door to plenum is lower than the guard as you can see in the photo. I tried to adjust the door but then the body lines down the sides were out heaps. The only way of fixing it would be welding a bead along the top of the door skin and build it up. I used a cardboard templet so left and right sides of the plenum were close to being the same. Looking at slightly different angles make the gaps look different. looking from the top straight on the gap look reasonably even except the door to guard alignment at the top edges. The right side come up a bit better due to better door alignment.
The flange I was referring to is the top plenum outer section has a lip/flange where its welded to the body and sticks out under the door inner frame when closed. Maybe when I pull it down to do the inside paint I will do a bit more on it. I just tried to get the outer plenum to match up and get the right shape which wasn't possible without the bonnet, guards and doors on.

Right side.

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[wbute]

Mate I took some photos of my ute. It’s as from the factory but I can’t upload them. PM me if they will help.

[gregbark]

If you look at the Rare Spares web site for part 2812048 it might help identify the Plenum Chamber panel part.

[wbute]

Yeah I think the flange you mean is meant to be there. It’s where the cowl panel is spot welded to the plenum chamber and also the fire wall might join it there too.

[axistr]

I think your right wbute (PM sent) and thanks Greg. looking at my Torana's both cars cowls finish flush to the plenum. I was reasonably sure that the HQ-WB was different but since the last panel beater had buggered around with it and stuffed up the profile I started to second guess myself. Its been a long time since I have mucked around on the H series cars, and the memory defently isn't as good as it was in the seventies.

[axistr]

Decided to tackle and hopefully the last of the body work. When my mate (the previous owner) started this project he asked the panel beater to role the rear guards for large rear tyre clearance. The panel beater rolled the entire rear flanges, not just the top area. I hated the look and decided to try and fix it. After rolling the guards they bogged the flanges flush with the inner guards. I removed the bog to inspect but there was no way I was going to be able to pull the flanges back down, they were just stretched way to much.


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I had some front guards which were rusty and needed a fair amount of work, so I decided to sacrifice them and cut out the rolled lip flanges. The front flanges were close to the shape of the rear wheel arches. with a bit of work they fitted surprisingly well. All welded in and the arches kept there shape. Only took a light grinding, epoxy prime next, then minimal bog needed and Hi-fill and I'm done.


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[damienengland]

Yeah that looks very good. Surprising how a small detail can drastically alter a cars appearance.

[axistr]

Finally and hopefully the last of the body repairs are done and dusted. Next job is put a few coats of Hi-fill all over before the wether starts to get to cold to paint in the shed.


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