Epoxied Air Lid
Epoxied Air Lid This is a pretty hardcore mod so I thought I would post it over here. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I found some definate room for improvement in the air tract. I did a few things under the hood for improved flow including cleaning up the MAF & re-contouring the air lid for high flow/velocity.
The bottom corners on the stock Whisper Lid form an L shape and there is a corner where air goes and gets stuck instead of going in the MAF where it should. I recontoured the Lid so ALL the air goes into the MAF directly. It's a velocity stack design and air should definately pick up speed going through the MAF. I also made the epoxy level with the edge of the MAF all the way around so air wouldn't hit the MAF entrance and cause turbulence. The IAT sensor was also relocated away from the velocity stack area to remove any turbulence.
Here are a couple pics I took before the epoxy:
http://community.webshots.com/photo/...40043878uhMOyo
http://community.webshots.com/photo/...40043869MVnCQI
After Pics:
http://community.webshots.com/photo/...40120261vStcvu
http://community.webshots.com/photo/...40120238bZArqK
http://community.webshots.com/photo/...40120248tAdIkH
http://community.webshots.com/photo/...40120419VSlqwd
I'll be doing some track testing next weekend. I predict a new best. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
I found some definate room for improvement in the air tract. I did a few things under the hood for improved flow including cleaning up the MAF & re-contouring the air lid for high flow/velocity.
The bottom corners on the stock Whisper Lid form an L shape and there is a corner where air goes and gets stuck instead of going in the MAF where it should. I recontoured the Lid so ALL the air goes into the MAF directly. It's a velocity stack design and air should definately pick up speed going through the MAF. I also made the epoxy level with the edge of the MAF all the way around so air wouldn't hit the MAF entrance and cause turbulence. The IAT sensor was also relocated away from the velocity stack area to remove any turbulence.
Here are a couple pics I took before the epoxy:
http://community.webshots.com/photo/...40043878uhMOyo
http://community.webshots.com/photo/...40043869MVnCQI
After Pics:
http://community.webshots.com/photo/...40120261vStcvu
http://community.webshots.com/photo/...40120238bZArqK
http://community.webshots.com/photo/...40120248tAdIkH
http://community.webshots.com/photo/...40120419VSlqwd
I'll be doing some track testing next weekend. I predict a new best. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
TECH Enthusiast
Joined: Jan 2002
Posts: 559
Likes: 0
From: West Monore
Re: Epoxied Air Lid Man that looks awesome. That is very clever. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" /> I hope the weather is good this weekend for you for new record. It seems you have really got the air flow characteristics figure out. I wish I could see the car and borrow some of them adjustments for my own==just for low elevens. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> Anyway good luck partner and I believe you will set a new record.
<img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />
Berger can still behind!!!!!! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> Terry <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
<img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />
Berger can still behind!!!!!! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> Terry <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
TECH Fanatic
Joined: Nov 2001
Posts: 1,055
Likes: 0
From: Baton Rouge, LA
Re: Epoxied Air Lid Jantzer have you check out the directflow lid? Do they have these abrupt stops as well?
Its funny to see you doing this to your air lid becuase I just took notice of its inner shape last week and was planning on doing something similar <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Good job
Its funny to see you doing this to your air lid becuase I just took notice of its inner shape last week and was planning on doing something similar <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Good job
Re: Epoxied Air Lid Thanks Kent. Maybe we can meet up sometime, when I make it back to Texas or something. Hopefully Sacramento will get down into the low 70's or better. I seem to always hit that track on bad days.
Mike I haven't looked very close at a Direct Flow. I'll try and dig up some info on the net and see how they look. I remember seeing info a while back where the popular air lids were flow tested. The direct flow was better than the MTI/Whisper. I wouldn't trade mine for anything though. I don't think I'll show pics of the finished product. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
I just finished the air lid up today and it's awesome. I sanded it down to 400 grit and the radiuses are perfect. I also did a little re-contouring/porting of the MAF, sealed the air lid, and did some more extensive mods below the airbox itself. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> I think it feels better. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I might do some back to back tests of my lid vs. the whisper and stock on a local project car. And I'll probably try mine vs. the whisper this weekend.
Mike I haven't looked very close at a Direct Flow. I'll try and dig up some info on the net and see how they look. I remember seeing info a while back where the popular air lids were flow tested. The direct flow was better than the MTI/Whisper. I wouldn't trade mine for anything though. I don't think I'll show pics of the finished product. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
I just finished the air lid up today and it's awesome. I sanded it down to 400 grit and the radiuses are perfect. I also did a little re-contouring/porting of the MAF, sealed the air lid, and did some more extensive mods below the airbox itself. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> I think it feels better. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I might do some back to back tests of my lid vs. the whisper and stock on a local project car. And I'll probably try mine vs. the whisper this weekend.
TECH Fanatic
Joined: Nov 2001
Posts: 1,055
Likes: 0
From: Baton Rouge, LA
Re: Epoxied Air Lid Jantzer, what is your setup leading to the lid?
Raised airbox thats been cut to shreds?
FTRA?
Ram air tubes?
Thanks <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Raised airbox thats been cut to shreds?
FTRA?
Ram air tubes?
Thanks <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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Re: Epoxied Air Lid Hey Scott. I was looking at my direct flo lid and its designed real smooth and round where the neck comes up to the maf opening just like yours is so I dont think much improvement can be made on mine. On the other Hand do you think the Iat sensor in the neck there is that big of an obstrusion? If so how what size drill bit did you use to drill to relocate the Iat sensor? Do you think the Iat sensor being in the wall of the Lid will cause turbulence?
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Verdad Gallardo Re: Epoxied Air Lid I'll try to take another pic of the airbox with my sheetmetal air flap. Essentially it is mounted to the short side of the box and goes down to the radiator. The shape of it is the key.
I'll be fabricating a complete sheetmetal air box & ram air setup later, but this is just a quick little test I'm doing over the FRA setup.
Mike:
Exactly, raised airbox cut to shreds, opened up as much as possible without collapsing. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Terry:
I know, if it doesn't show up on the dyno for you, it doesn't work. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> Worthless or not, it'll flow more than your airbox. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
The IAT sensor has to cause turbulence. Take out the rubber piece and get the largest bit you can that will fit in the hole and use it to drill the new hole. Make sure to use a smaller pilot hole though.
My airbox is formed like a velocity stack. It's worked for years in hotrodding, I don't know why it wouldn't work now.
I'll be fabricating a complete sheetmetal air box & ram air setup later, but this is just a quick little test I'm doing over the FRA setup.
Mike:
Exactly, raised airbox cut to shreds, opened up as much as possible without collapsing. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Terry:
I know, if it doesn't show up on the dyno for you, it doesn't work. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> Worthless or not, it'll flow more than your airbox. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
The IAT sensor has to cause turbulence. Take out the rubber piece and get the largest bit you can that will fit in the hole and use it to drill the new hole. Make sure to use a smaller pilot hole though.
My airbox is formed like a velocity stack. It's worked for years in hotrodding, I don't know why it wouldn't work now.
Re: Epoxied Air Lid Just keep dicking with your air intake while I get my new 13:1 CR LS6 heads with titan. 2.1 valves and huge cam in. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
TECH Enthusiast
Joined: Jan 2002
Posts: 559
Likes: 0
From: West Monore
Re: Epoxied Air Lid Jantzer I hope you are on to something with your air box system. Fast Toys claimed increases of 1 to 2 tenths with their systems plus additional MPH. Seems like you could do the same thing. Anyway, I little bit more is better than nothing. I am thinking about moving my sensor to prevent list turbulance. I ordered an SLP bellow trying to improve my airflow. Terry must be concerned/scared/tensed doing with LS6 Heads going against your little bitty heads--HaHa. Anyway happy air engineering.
TECH Apprentice
Joined: Feb 2002
Posts: 358
Likes: 0
From: Alta Loma, CA
Re: Epoxied Air Lid Those are huge <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> valves for your little motor Terry. When they don't work we can throw them into my heads. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Re: Epoxied Air Lid That looks really nice...My prediction, no noticable track difference. I wish you luck though, you've obviously got quite a few tricks up your sleeves to run those times. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />