I have decided to feed my 455s air needs through a W 30 air induction style system. The problem is only 502 of these cars were built and a hand full of dealer installed upgrades to the system. As a result original parts are few and far between and very expensive if found. The system consisted of two split intake scoops which took air through holes in the Rad support above and below the park lights which are situated between the high and low beams. The air was fed to a large duel snorkel air filter box through twin 5 inch tubes. I have read somewhere that this system was more effective than the 68/69 system which pulled air through scoops under the bumper.
Now seeing as I am a DYI type of guy with a fairly extensive background in Composites I decided to make my own. I began by laminating a number of layers of 3/4 plywood together which was shaped into a plug. Since I was only building 1 system I elected to pull my parts right off the plug rather than making a mold. The plug was designed to split in the middle. The halves were laid up separately and joined after plug removal.
The plug was smoothed ,waxed, released and laid up. Unfortunately I had a bad (old0 Batch of PVA release so it was a chore to remove the parts but we got it done.
Next I have to build the 4 scoops that fit into the "Y" scoop from the front. You can see them in the first pic of the lights. I will follow up in a few days when I get them built and then on to the real Challenge......The filter box. Stay tuned folks.
That looks great. I looking to build something for my Buick. Is that just one layer of glass? Any brand of mold release better than the next? Sand down the glass and paint or can you spot fill imperfection without any worry of motor vibration knocking out the filler?....Nicely done....
The scoops are 5 layers of 6 oz. glass. I used a woven glass and not the woven roving stuff they use on boats. I had a local boat shop order it for me and they supplied me with some Polyester resin, Cataylst, and PVA release. The plug was waxed first several times with a good quality auto paste wax with carnuba( I used Mothers).Heres a pic of the glass I used with a set of keys for reference.
Yes I would find the making of the forms very interesting as well.Where did you get your dimensons and shapes for making the two main parts of the breather assy and the scoops in the first place. I always wonder about the buck or mold designe part of these projects. Ed
-- Edited by flatblack55delivery on Sunday 29th of September 2013 10:09:54 AM
I got my measurements from pictures and research. I know it used a 14 inch filter and I wanted a 3 inch deep which is all I have clearance for. The tubes are 5 inch so that part was easy to figure. From pictures I estimated the total width at 24 inches or roughly the width of the engine Valve cover to Valve cover. I laid out the shape in bristle board and transferred it to my Maple board which is about 2 1/2 inches thick. The outline was then cut out and shaping began. I used a router where I could but most was done with a saw and a 7 inch grinder with a 50 grit disk.
Heres a few pics of my form block. This side was used to form the top.
This side was used to form the bottom piece. I made it flat as I knew I would have to build the bottom ramps to provide the bottom piece of the 5 inch tube flange. I have added a pic of the block and the bottom of the box showing this afternoons work which was the forming and tacking in of those previously mentioned ramps. Tomorrow I cut out the center of the bottom and weld in the dropped bottom plate.
if i were you id be buying the 25ft package of tubing then making two more breather assemblies and putting them up on ebay (one at a time). if an original is going for that much id bet theres a pretty good market for a very well done repro. you already have the molds/bucks ............. worth thinking about.
one thing im not liking is the edelbrock lid on yours (id definitely go with a plain lid). it makes it look like this unit could have been purchased from edelbrock when it is really a masterpiece you created. just my opinion.
-- Edited by not as drunk as you thinkle peep I am on Wednesday 16th of October 2013 02:00:14 PM
Been a while since I added to this thread so here is the finished kit. I am still looking for a source of some 5 inch tubing at a reasonable price. I can buy it locally but it is over $100 for a 25 ft box and I only need 7 feet. I see an original W-30 air breather on Ebay . The bid is at $1020. 00 the last time I checked.
Really nice to see a completed project.Well worth the work, now that its done, I bet.Thanks for sharing.Oddly enough I think there was someone on Kijiji looking for one of these setups in the last couple of days in the Ontario classic cars section. Ed
-- Edited by flatblack55delivery on Wednesday 16th of October 2013 09:09:16 PM
if i were you id be buying the 25ft package of tubing then making two more breather assemblies and putting them up on ebay (one at a time). if an original is going for that much id bet theres a pretty good market for a very well done repro. you already have the molds/bucks ............. worth thinking about.
one thing im not liking is the edelbrock lid on yours (id definitely go with a plain lid). it makes it look like this unit could have been purchased from edelbrock when it is really a masterpiece you created. just my opinion.
-- Edited by not as drunk as you thinkle peep I am on Wednesday 16th of October 2013 02:00:14 PM
Yes I agree. The Edelbrock lid will be swapped out for a plain one before it goes on the car.
Thank you all for you kind words. Glad you enjoyed following along. It was a lot of work(hours) but as I am retired time I have.....money I havent. Lol!
Thank you for sharing this.. Great work, For sure save those forms.. it's great that so many rodders are so willing to share their "secrets" to help and motivate other rodders to not be afraid to be creative and imaginative with building a hot rod.. The fun is in the build and the cruising with what you built .. Great job I really appreciated your post and pictures..