Jump to content
Mrbarry

Louvre punching

Recommended Posts

I want some custom louvres punching into my bonnet, first some rear facing ones to cool the engine bay, but more importantly some rolled louvres to let cold air into the ITBs. Has anyone had any done or know of any reputable places, ideally midlands based.

I intend making a duct from the rear plate of the sausage filter on the Jenvey ITBs to seal to the side of the hood, holes in the hood will then give a clean cold air feed. 
 

I did think of putting the foam sausage filter on the outside but after a test fit I decided it looked like *bleep* and a better solution was needed 🤣

Share this post


Link to post
Share on other sites

I literally did a search online for 'bonnet louvres', found someone local and took my bonnet round. Took him about an hour...they use a machine, so I don't think there is much individual skill involved and so any old bod will do IMO.... 😉

Pics in my blog here

Edited by nelmo

Share this post


Link to post
Share on other sites

Look good those. I want those style vents on my bonnet top, but the shark gill vents on the drivers side feeding my ITBs via a cowling to make sure I get clean cool air in. Let the noise out too 😈
 

Plan is to use hollow boot lid rubber on the cowling to seal air tight to the inside of the bonnet and draw external air only. I’m fitting a triple tow of those vents at the front edge of the bonnet and carrying the outer two rows down the full length of the bonnet. The triple rows will have a 9 inch Spal fan Fed via a stat blowing air up out of the engine bay when it’s hot in there. 

Share this post


Link to post
Share on other sites

This is how I want the vents punching in. These black stickers are a bit wobbly and not identical sizes etc but they give a good idea of what I want to do. The nose cone will have a large exit vent at the rear and a channeled radiator duct to get hot air away. Will seal the rad to the nose cone obvs. 

841B0DDE-C7DA-485A-8AF7-95DB373C63CE.jpeg

Share this post


Link to post
Share on other sites

This style vents on the side of the bonnet btw 

403BB4A7-3B04-4ACB-9BCF-804C9F918195.png

Share this post


Link to post
Share on other sites

Ah OK, that might be a bit tricky. When I did it, the guy said his machine couldn't do the sides like that so you may need someone with some skills... 

Share this post


Link to post
Share on other sites

Located a guy by rockingham raceway who said £80. Fair price I thought. 

Share this post


Link to post
Share on other sites

Is that for conventional louvres or the ones like you want on the sides? 

Share this post


Link to post
Share on other sites

For the ones I want on the side. The others will be additional cost. I don’t much care what it costs if the quality is good tho. I’d rather pay more and be happy with the workmanship. Im sure lots of people could do as good a job, however I also know some people have a very low bar 🤣

Standard louvres are not so bad lots of people have tooling for those. But the ones on the side are less common and I’m a huge stickler for level, straight and true. If one is out by 1mm I’ll go mental. 

Share this post


Link to post
Share on other sites

That's a good price because it's not a simple stamping operation. The hole needs to be pierced before the edges are formed. 

Share this post


Link to post
Share on other sites

Yeah I thought that to be honest. I could have a row or standard louvres or bolt on a plate off eBay for a fiver. But I don’t want that I want something I can look and feel I have done my best, or paid for it at least 🤣

Nothing wrong with standard louvres on the top of the bonnet but for my taste those would be better on the side. Again that depends on the individual car to be fair. 

Share this post


Link to post
Share on other sites

Totally agree, if they do a nice job punching them it's well worth the money. 

Share this post


Link to post
Share on other sites

Have you ever taped thread or wool to each of your vents, or the odd one, and watched the air flow at different speeds? I have taped some yellow thread to a few places on the zero and been for a drive. You get some strange results in some places. From the front of the nose cone is really weird how it changes direction on and off. Would love to see how the louvres move air around. 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...