Scoote center hood duct and its function
 

So i have a scoote replica hood which i believe its made by chaser... i bought the fiberglass version and its began to crack by the center vent/opening.. now im thinking of converting its function into making a air intake box using that as the inlet.

now ive seen some other replicas and curious about their function...
This is off the top of my head so please correct me if im wrong...
seibon has the least aggressive hood and center is blocked off?
Vis is more agggressive and the center is blocked off as well?

Chaser (the one i have) is open and has kind of a tunnel through the center of the hood which i believe is used for air to travel through and weight the hood down? correct me if im wrong again but this is my conclusion ive derived since this hood looks more stable then my stock hood.

now since the crack is side to side, i was thinking about cutting it completely and making some kind of intake box like the m2 one.. except the placement would be in the center. also i would make some sort of intake like goodfellas intake that places the filter between the motor and the radiator (fmic)

lmk what you guys think

How does it fit, and pics of crack plz.

my first replica scoot hood has the center vent that ran all the way to the back, it diverted air to cool the abs unit and brake booster. the vis unit had later on was blocked off as you stated,the rain shield was held on to the hood with some type of adhesive. it is possible to run a duct from the center scoop to an air box or filter.

fits decent slightly larger gap on the pass side.. but idc since it has a function and i can see heat soat leaving the vents... IMO this is the best hood because all the vent openings are larger then the vis and seibon ones that i have seen...
ill get you pics when i got home tomorrow night..

Interesting.. what effects does cooling the brake booster and abs have?

yeah as soon as the motor is put back in im gonna see how much room there is then start mocking up/fabbing:icon_tup:

Interesting.. what effects does cooling the brake booster and abs have?

i have no idea, the rear vents were over these areas. cooling the abs unit might help with brake fluid temps.

where'd you get the chase version? I never knew that the seibon version had a fake scoop because the last one I saw was functional. You don't necessarily need a duct, if you open the front scoop you're gonna get a lot of fresh air into the engine bay.

yeah my seibon hood is NOT blocked off. But it does lack the duct to the ABS like the original scoot though.

picked it up in MD from there warehouse... i believe tehy are a forum vendor as well

interesting... were they're two versions? the only one ive seen in person it was blocked off but i feel like other members on the site have them opened?:scratch:

I was wondering about this same idea.

Has anyone done this?

Pictures?

i might start fabricating today... i guess ill post up a step by step process?

Note: i cut the brackets off for that middle brace in the enginebay... kinda regrettign it now as that would have been perfect to support the ducting system im gonna try fabbing up..

My hood vent has a tunnel all the way back and dumps it behind the UIM on both sides...

http://c1.ac-images.myspacecdn.com/i...b5112340b8.jpg

dunno... All I know it's beyond silly to have the outline of the vent with a screen (mind you), only to have it blocked off.

http://www.seiboncarbon.com/product....RX-7&year=1993

http://www.seiboncarbon.com/test2/im...RX7-ST%202.jpg


EDIT- This was bugging me so I called seibon and asked what the deal was. From their own words: all of the ST-style (scoot) hoods have the center vent open, none of them are closed. If there are some that are not open they are not a seibon product.

yes, and if you open the vent yourself, you might want to look into strengthening the area so it keeps it's shape, shouldn't be that hard to come up with an easy way to do that.

hmmmmmm wonder what hood it was that i saw then:scratch: maybe it was vis? or another replica? anyone with a vis wanna chime in??

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just for info purpose.

i have a chaser FRP and all the vents are open. the middell front one has a grill and i left it there (all though it doesn't show because it is black) so that on a rainy days I put a piece of leather of the same shape of the opening so that the turbo doesn'T suck some water into my engine. My set up has an elbow infront of the intake of the turbo with a filter that positions it right infront of the opening on the hood. There is also heat reflection material that is glued under the hoot for obvious reasons. I don't have the best pics but just for reference:

http://i917.photobucket.com/albums/a...onepics102.jpg

http://i917.photobucket.com/albums/a...onepics189.jpg

http://i917.photobucket.com/albums/a...onepics323.jpg

I just creamed a little in my pants...

oh, and here's more proof that the front scoop is open on some models, ANOTHER 3 rotor turbo with the hood, it's a little big, but you can see the detail http://www.1320video.com/img/album192/IMG_6181.jpg

Herblenny has a VIS hood and IIRC you can see his IC pipes right through the front vent. Maybe he'll see this thread and chime in.

I sent an email to caser aero asking to give us some input on this.

well chasers is def open, i have theirs. no mesh in the center tho... man i really wonder what brand it was that i saw then......

I heard back from russ at chaser, they sell both the one that feeds to the back of the engine compartment, and the one that isn't functional, so whichever you want to order.

^So is the non fuctional open or closed?

the front center scoop is supposed to tunnel all the way back to provide cool air over the turbos & the brake booster. the cheaper replicas don't have this to save money when producing them.

No air goes forward and down to the turbos. The original ducts are exactly above the two brake units, not like in that pic. Rain guards screw in, not glue.

https://www.rx7club.com/interior-exterior-audio-26/god-all-hoods-275847/

I've done this for my NA 20b. I have the older ill fitting fiberglass version that has the removable rain gutter that I bought really cheap about 5yrs ago from and individual. The tunnel feeds the brake booster and abs unit. Since it was the ill fitting version, I had to do some mods to make the hood line up correctly (which it now does). ;) No pics yet as I'm nearly finished with all my body & fab work. I'll start a thread on the entire project when it's finished.

I have the scoot style hood as well and have brained stormed on the same idea of a box to feed the turbo air from the center scoop...guess I should go ahead and make it and post up a thread on it

being this is exactly what i wish to do with my single airbox i just want to verifie that the VIS, SEIBON and CHASER certain version all are open right there at the scoop allowing ducting to an airbox correct?

z

no, none are, they feed to the back of the engine bay to cool the turbos and master brake cylinder, you CAN order one without the pass-through and cut the non-functional front scoop out like the OP is considering doing.

I can only speak for seibon. The scoop is just a hole and not ducted to anything. If you look closely at my pic you can see right through the scoop.

https://www.rx7club.com/picture.php?...ictureid=13802

another thing to note: Seibon's hood openings (scoop and vents) are less agressive than other manufacture's.

https://www.rx7club.com/picture.php?...ictureid=13803

^^ the chaser one i have seems to be the most aggressive IMO

My VIS hood is just like montego's hood, but the vents are bigger. The hood is slightly taller than stock because of this design.

http://i248.photobucket.com/albums/g.../Jan182008.jpg

The vent is just a hole. Air will flow toward the alternator and then onto the UIM.

Here are some pictures of the original for reference.

Koseki-san from Scoot has done some testing of the cheap hoods vs his original design and needless to say none of them come close to the amount of cooling and the fitment of the original hood.

http://farm3.static.flickr.com/2465/...c807f92415.jpg

http://farm3.static.flickr.com/2716/...614ac54e83.jpg

http://farm3.static.flickr.com/2522/...c1d133cf12.jpg

http://farm3.static.flickr.com/2703/...cf7537e437.jpg

God the original is fucking gorgeous! I want one so bad I wish I could afford one. Look how beefy the latch is!

less agressive isnt a bad thing for me. as far as te opening in the scoop though is important how big would you call it 2x6"? and what about flex and fit would it flex with hood struts installed? any info appreciated.

that scoop opening definatly looks big enough although im concerned how much taller the hood actually is? any guess on that? as well as the fit/FLEX on this one as well, will it flex with hood struts? any info apreciated.

thanks guys
z

you and me both...

My hood is sturdy enough that it wont flex with hood struts. When I get home tonight I'll measure the scoop for you.

The replica that Rotary Xtreme had on group buy way back in 2003 was very similar to the original Scoot with duct going all the way back. I always noticed that the newer replicas that came out afterwards like the Seibon had much shallower louvers and front duct with wire mesh inside. That group buy was certainly not cheap back then when there were no other options for a Scoot replica hood.

^^ yeah thats why even tho im rocking a chaser hood and fitment is alright, i dont mind cuz its one of the more aggressive versions...


miata mx5- after looking at your pics mine is quiet similar except that ducting on the back those holes are larger, mine are just circles with a like 1 in diameter?.. sorry ive been slacking ill post pics up today

ok the opening is roughly 1 1/2" high. Along the bottom is 7 1/2" and its 5 1/2" along the top.

please dont mind my kiddy ruler
http://i426.photobucket.com/albums/p...d/P2070156.jpg
http://i426.photobucket.com/albums/p...d/P2070157.jpg
http://i426.photobucket.com/albums/p...d/P2070158.jpg
http://i426.photobucket.com/albums/p...d/P2070159.jpg
http://i426.photobucket.com/albums/p...d/P2070160.jpg
http://i426.photobucket.com/albums/p...d/P2070161.jpg
http://i426.photobucket.com/albums/p...d/P2070162.jpg
http://i426.photobucket.com/albums/p...d/P2070163.jpg
http://i426.photobucket.com/albums/p...d/P2070164.jpg

i'm really curious on fitment of chaser products, post up fitment pics if you dont mind.

car is apart atm... ill get pics up when in the next 2 weeks... or you can come see the fitment at deals gap!

Holy filters Batman! That's the largest air filter I think I have ever seen!

Lol
 

You kidding! have you seen Richie's!!:)
Andrew

Didn't know that was your car Andrew or I would have said "Tabarnac!" Is that the same filter you had a Gordon's BBQ last summer? Looks larger to me.

Jesus is building a "ram air" setup for my filter so I draw cold air from the outside instead of the engine bay. It's going to be pretty cool and I'll show it to you at DGRRX.

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hehehe yes it is the same filter as the one at Gordon's BBQ David.

I'm curious to see the new set up of your airfilter and the shrouds around your front sexy lights!

To get back to the subject, the chaser hood is, i believe, the most agressive as stated above, but the fitment is not perfect. Especially if you put it with a 99 spec platless front bumper. the front gap is pretty big to my liking. I'll try to get some pics to show you guys.

Andrew

Damn construction wise, mine looks just like that. It just does fit as good. :(

http://farm3.static.flickr.com/2716/...614ac54e83.jpg

clearly you missed out on rich's "compensation filter":
https://www.rx7club.com/showpost.php...&postcount=222

:lol::lol::lol::lol::lol::lol:

Now that's too funny. And we thought it was just the car that made the man, now it's the size of the filter also:)

A couple of you guys said you were designing a way to duct the air to your filters. Have you guys made any progress?

Another forum member just purchased a Seibon hood and the center vent runs to the back and dumps the air. If you guys have that style of hood how to you expect to channel the air to the filters?

i still wanna do it.. but im poor. and im debating if im gonna switch to a vmount... if i go vmount it would be pointless to atempt a fab project now...