4.5 Airbox Repair ?
Discussion
If your air boxes are in need of repair, you could do no worse than bodge insert some 2 1/2" bore exhaust pipe.
My air boxes had been repaired at some time, the passenger side being in quite a poor state.
I found some 2 1/2" stainless exhaust pipe left over from a previous project and thought I'd have a play..
the fit is very snug, some if not most of the outlets had to be kissed with a flap wheel.
On each of the outlets I drilled two holes at approx 180 degrees apart, passing through the airbox and pipe, into the holes I pressed a cap head screw. Each screw was then tack welded and the top ground off. Slits were cut in the fibre glass before the pipes were inserted
The drivers side airbox was in far better shape.
The finished airboxes have been on the car for several thousand miles with no perceived adverse effects, and of course you can clamp the pipes as hard as you like without squashing/breaking owt.
My air boxes had been repaired at some time, the passenger side being in quite a poor state.
I found some 2 1/2" stainless exhaust pipe left over from a previous project and thought I'd have a play..
the fit is very snug, some if not most of the outlets had to be kissed with a flap wheel.
On each of the outlets I drilled two holes at approx 180 degrees apart, passing through the airbox and pipe, into the holes I pressed a cap head screw. Each screw was then tack welded and the top ground off. Slits were cut in the fibre glass before the pipes were inserted
The drivers side airbox was in far better shape.
The finished airboxes have been on the car for several thousand miles with no perceived adverse effects, and of course you can clamp the pipes as hard as you like without squashing/breaking owt.
,nice one sir,another job to add to my list 
Every job i do on the car i say that,like the way in the handbook it says the chassis has been treated to prevent rust,
Looks good Mark.
Ive a pair of 4.5 air box backing plates that need repairing before going on ebay, my idea is to use plastic gutter fall pipe ( if i can get the right diameter ? ) and glue and glass them in place
But failing that, have you any of that pipe left over, in return for a beer or two ?
Ive a pair of 4.5 air box backing plates that need repairing before going on ebay, my idea is to use plastic gutter fall pipe ( if i can get the right diameter ? ) and glue and glass them in place
But failing that, have you any of that pipe left over, in return for a beer or two ?
Edited by Gray_101 on Tuesday 3rd January 21:23
This looks like exactly what I was going to do to mine...mine are tired and starting to split....
I still haven't sourced a battery....but was thinking it would be an ideal opportunity once I had got the induction off...
I would have kept it on the QT side though cos thought it would create out cries of..."what about flow bla bla"
I'd be interested in some of that tube too....if there's any left after those in the head of me in this queue
Of course the thing here is that you'd be able to tighten the clamps up without thinking.....when am I going to crush the pipe...I like it...2 1/2 in inches you say...mild steel would do the trick I guess...
I still haven't sourced a battery....but was thinking it would be an ideal opportunity once I had got the induction off...
I would have kept it on the QT side though cos thought it would create out cries of..."what about flow bla bla"
I'd be interested in some of that tube too....if there's any left after those in the head of me in this queue
Of course the thing here is that you'd be able to tighten the clamps up without thinking.....when am I going to crush the pipe...I like it...2 1/2 in inches you say...mild steel would do the trick I guess...
Edited by schimg on Wednesday 4th January 06:46
schimg said:
I would have kept it on the QT side though cos thought it would create out cries of..."what about flow bla bla"
Argh! fluid dynamics Edited by schimg on Wednesday 4th January 06:46
There will always be the neighers or even thrice neighers
the post was about fixing a busted airbox for very little money, it's robust and with less chance of foreign objects getting sucked in the TBs ? can only be a good thing 
the spongy's;)Rufus Roughcut said:
Argh! fluid dynamics
There will always be the neighers or even thrice neighers the post was about fixing a busted airbox for very little money, it's robust and with less chance of foreign objects getting sucked in the TBs ? can only be a good thing
Good afternoon Mr Roughcut,There will always be the neighers or even thrice neighers
the post was about fixing a busted airbox for very little money, it's robust and with less chance of foreign objects getting sucked in the TBs ? can only be a good thing apologies if you took offence in anway mate....like I say by the look of things this is the way ahead too....gotta be better than bad sealing hoses...I'd like some those ACT jobbies but new rad is the next thing after a new battery...all good
schimg said:
Good afternoon Mr Roughcut,
apologies if you took offence in anway mate....like I say by the look of things this is the way ahead too....gotta be better than bad sealing hoses...I'd like some those ACT jobbies but new rad is the next thing after a new battery...all good
No offence taken apologies if you took offence in anway mate....like I say by the look of things this is the way ahead too....gotta be better than bad sealing hoses...I'd like some those ACT jobbies but new rad is the next thing after a new battery...all good
my fault for not taking more care in my reply. I've re-read some of my other posts from yesterday,they all seem rather terse ...apologies to everyone If I can help in anyway give us a shout.
Know what you're saying about a list, at the top of mine are some new disks
schimg said:
..I will post some pictures up..
Good man...Then we can What material are you going to use? I would have liked to use aluminium but couldn't figure out a way of fixing them in place, I can't weld ali and screws/poprivets can vibrate loose, I did think about tiger seal for a moment.....
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