Due to noise im getting some plans together on a new inlet plenum.
I am thinking of either making one from ali and welding it up or making one from carbon fibre with an ali back plate.
I can't seem to find an answer of how to seal the CF to the the ali back plate. I am currently thinking of a 15mm lip with foam tape and
screws.
Any ideas?
I want to future proof so it must be capable of taking boost. I also understand the principles of design, its just material and assembly ideas im
after.
Cheers
[Edited on 11/3/16 by bi22le due to drunk posting]
[Edited on 12/3/16 by bi22le]
I'm also interested to the arirbox for my Fury realised with an aluminiun plate and fiberglass box screwed on it. It should be low enought to fit without to cut the bonnet.
PU will stick the Ali to the CF no problem. Alternatively, make it one piece without a backing plate? Your proposal to use foam strip wont be good for boost I would think. Ideally one piece, or split the box to have a removable lid rather than backplate?
I just typed out a massive detailed reply and lost it 
Google "Lost foam" technique for carbon fibre
PU foam, carbon Fibre, Epoxy Resin and PAint thinners
You will need to think about how it will be attatched too and how you'll get to the fittings.
Id suggest keeping the plenum simple and the attachment external.
I've made Carbon Fibre Fuel Tanks this way, sometimes in a hurry and they have held up for years
quote:
Originally posted by cr500dom
I just typed out a massive detailed reply and lost it
Google "Lost foam" technique for carbon fibre
PU foam, carbon Fibre, Epoxy Resin and PAint thinners
You will need to think about how it will be attatched too and how you'll get to the fittings.
Id suggest keeping the plenum simple and the attachment external.
I've made Carbon Fibre Fuel Tanks this way, sometimes in a hurry and they have held up for years
I too am going down a route with a pulsar plenum lid. im turboing my mx5 westfeild whilst trying to leep my jenvey throttle bodies which i already
had. ive had backplates and spacers laser cut by a firm down in cornwall.
im hoping that its going to hold boost
Mine does...
I don't know whether this will help, but I searched the web for pictures of 6 cylinder cars with inlet plenums.
The Skyline one looked closest to what I needed, and combined with some XJ6 efi bits came up with this for the E Type, its all welded with only the
head and TB joints, so could be boosted:
nearly there 3
[Edited on 1/11/16 by r1_pete]
quote:
Originally posted by Bunje
I too am going down a route with a pulsar plenum lid. im turboing my mx5 westfeild whilst trying to leep my jenvey throttle bodies which i already had. ive had backplates and spacers laser cut by a firm down in cornwall.
im hoping that its going to hold boost
Is there much benefit in keeping the jenveys on a straightforward turbo build? Wouldn't selling the jenveys pay for a good chunk of the conversion? I'm genuinely curious as you don't see many itb'd turbod mx5 engines.
quote:
Originally posted by sdh2903
Is there much benefit in keeping the jenveys on a straightforward turbo build? Wouldn't selling the jenveys pay for a good chunk of the conversion? I'm genuinely curious as you don't see many itb'd turbod mx5 engines.
im doing it out of curiosity if im honest. because i already had the jenveys. and i dont need the money to pay for the turbo bits. i have seen it done on a monster car over in the states. ive spoken to northampton motorsport about the mapping and was told that as long as the plenum can hold the boost it shouuldnt be a problem. plus the wiring is easier with the jenveys as its already done. i have nothing to lose and maybe nothing to gain but im trying it anyway
I'm also going down this route - I'll be 3D printing mine and then taking a mould from that and going to make it in CF via resin infusion.
If you were going to want it to handle a charge at some point, I would look to go for CF and or Aramid. Aramid is stronger than CF under tension, but
weaker in compression.
Here is an example of my first printed iteration of an airbox, but I've decided to scrap this design for the fury. It's typical of a lot of
airboxes out there, and has dimensions similar to that from Jenvey and others. Even though I'm scrapping the part it was a good apprentice
piece.
Description
I'm scrapping it mainly because I have a lot of room under the bonnet with a fury, so I can avoid taking the air around a sharp bend. I'm
currently taking inspiration from this BMW design which has a much more gradual turn for the air. Also, (apparently) duratecs respond better if the
air filter is near the front of the run. I'd either use samco 100mm hose to duct the feed, or make a nice smooth hose run in something more solid
and again, mould and make in CF. Maybe Samco first for speed, and then retrofit the CF later if I can be bothered.
[Edited on 2/11/16 by FuryRebuild]
interesting. i dont have that much room under the bonnet and am going to have to cut the bonnet to get the plenum in. i was going to get it mapped
wiothout the bonnet just to make sure it all works and then cut it later. i was going to look into carbon fibre plenums as the one i have now is
rather heavy even with all the alluminium parts. i have seen some plenums at reverie carbon but im not sure which way to go
http://www.reverie.ltd.uk/automotive_home.php