I have a vented VIS CF hood that I have yet to install. IIRC, it weighs about 21 lbs off the shelf. I'm thinking of gutting it to get it lighter, but I thought I'd see if there are any very lightweight CF hoods available for the 5Gen. I'm hoping for something like 12 lbs (maybe that's unrealistic?). Stock hood is right at 42 lbs.

I'm trying to get my track car down to 2,600 lbs with me in it and 1/2 tank of gas, give or take. The only legal options I have are a CF hood, brake kit (on the way for the front), and lighter wheels. I've done just about every legal modification, weight-wise, and I'm just under 2,700 lbs with 3/4 tank of gas and me in the car according to the last shop that did my corner weighting last season. I could probably go on a diet myself, but that's another thread.

 

Maybe Fiber Images could make you a custom carbon-kevlar hood....

 

I have a fiber images....I wonder what it weighs.

Don't they make a CF trunk for 5th gens?

Is CF alot lighter than fiberglass?

How about LEXAN windows? I know Chris Fries is using them.....His Prelude is as light as it gets!

Taking a nice poop before a race should help a little too!

 

CF may be a bit lighter inch-for-inch, but the main reason CF parts will be lighter is because CF is much stronger so parts can be made of less material for the same strength....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by :=:NirVTEC:=: &raquo;</TD></TR><TR><TD CLASS="quote">I have a fiber images....I wonder what it weighs.</TD></TR></TABLE>
Are they still in business? I have a VIS vented hood. I'm wondering if it's all CF other than the skeleton, or if it's CF covered fiberglass.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by :=:NirVTEC:=: &raquo;</TD></TR><TR><TD CLASS="quote">Don't they make a CF trunk for 5th gens?</TD></TR></TABLE>
Illegal in Honda Challenge H2.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by :=:NirVTEC:=: &raquo;</TD></TR><TR><TD CLASS="quote">How about LEXAN windows? I know Chris Fries is using them.....His Prelude is as light as it gets!</TD></TR></TABLE>
Illegal in H2. Chris runs in H1, where lexan windows and a CF trunk is legal.

I've changed my mind and decided to stay in H2 because they lowered the min weight to 2,600 lbs.

 

You know you want to build a 240-250whp H22 though Billy!
I don't know if FI is still around. I actually got mine on a fluke. My shop usually deals with VIS and they happened to be out, so I got an FI instead and have had nothing but compliments about it.
I have lifted it a few times and it seems light....but who knows, because of the size weight displacement is hard to judge.

 

I've already built the bottom end, and I have the Ferrea roller rockers and cams sitting on the shelf. Plus 2 Euro R intake manifolds, and one custom RDX fuel rail for the Euro R mani. I don't know what I'm going to do with all these friggin parts! Oh, 3.5 sets of 15x8s too!

 

I'm trying to loose another 65lbs of the car also! New min weight is not going to be EZ get down to in H2 trim. I'm in the market for a cheap CF hood if anyone knows of any.

Billy, the alternator mounts can be aftermarket in H2, and the prelude alternator mount is a big heavy chunk of steel. Also cut your OEM door bars out if you have not yet. Also you can keep your Euro-R intake Mani it's legal in H2, just not in H3. Want to sell me the other one for cheap?

 

Composite Fab makes very light good quality carbon kevlar parts, but I'm not sure if they make Prelude parts and/or are still in business.

https://honda-tech.com/zerothread/1779459

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 577HondaPrelude &raquo;</TD></TR><TR><TD CLASS="quote">Honda Prelude, no engine swap needed!!
</TD></TR></TABLE>

CLASSIC!

Would you guys be able to cut random holes in the hood? Or maybe drill a couple hundred holes.......just thinking out loud now!
What if you started inducing rust to drop weight.....hahahaha....sorry, SOLO2 STS trick.
Are you allowed to get rid of the gas tank? Sorry, my HC rules are cloudy...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 577HondaPrelude &raquo;</TD></TR><TR><TD CLASS="quote">Billy, the alternator mounts can be aftermarket in H2, and the prelude alternator mount is a big heavy chunk of steel.</TD></TR></TABLE>
Walter, I've wondered about this. Can you tell me where in the rule book this comes from. If so, I'd LOVE to use a mount that relocates the alternator to the AC compressor area.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 577HondaPrelude &raquo;</TD></TR><TR><TD CLASS="quote">Also cut your OEM door bars out if you have not yet. </TD></TR></TABLE>
What's the best way to go about doing this without damaging the door skin?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 577HondaPrelude &raquo;</TD></TR><TR><TD CLASS="quote">Also you can keep your Euro-R intake Mani it's legal in H2, just not in H3. Want to sell me the other one for cheap? </TD></TR></TABLE>
What what what??? The Euro-R mani IS legal in H2? Where is that in the rule book? Am I missing something? If I can use the Euro R mani, that's GREAT news!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by :=:NirVTEC:=: &raquo;</TD></TR><TR><TD CLASS="quote">Are you allowed to get rid of the gas tank? Sorry, my HC rules are cloudy...</TD></TR></TABLE>

You can install a fuel cell, but if you do so, it must have a bulkhead that completely separates any fuel lines from the passenger compartment. Plus a fuel cell is probably $1k to $2k with custom fabrication.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 117 &raquo;</TD></TR><TR><TD CLASS="quote">

You can install a fuel cell, but if you do so, it must have a bulkhead that completely separates any fuel lines from the passenger compartment. Plus a fuel cell is probably $1k to $2k with custom fabrication.</TD></TR></TABLE>

Figured that......

Im liking my HOLE DRILLING idea......

 

well the rules do state that Mounts, brackets, and wiring may be non OEM or modified in H2 to accommodate an engine swap. So any civic, crx, or teg running the H22 will be using aftermarket mounts so I figured we could to. Maybe I'm stretching the rules?

The Eruo-R is a H22 intake mani so I figured we could use any honda H22 intake mani on any H22 engine (sort of like the tranny rule for H2) but I could be wrong. We should ask to make sure. (I'm still using USDM intake mani).

[edit] I went back and looked over the rules. Looks like parts from the Type-S and Euro-R would NOT be legal in H2. We can only use USDM or JDM (non type-s) parts. I guess you need to sell your Euro-R mani's. ...or build it H1 were you can then use it.



Modified by 577HondaPrelude at 3:29 PM 8/29/2007

 

ive got a stock A4 manifold if either of you need one to modify or anything just lemme know... i love watchin' seein' 577 and 117 rep. the 5th gen! You guys rock

 

FI cf hood with no skeleton...





Weighs about 12 lbs, but I'm not happy with the 11 nuts and bolts holding it down(no hinges or latch)... I may just trash the whole thing


Modified by Kool-Lude at 4:39 AM 8/30/2007

 

well dont trash it someone would take it

 

I would take it for the right price!

 

Wait a minute!!!! They changed the HC-2 rules????

Where are the new rules published? They dropped it from 2700 lbs down to 2600lbs & JDM engines are finally allowed? I submitted a HC rule request form about 8 months ago to Jeremy C. & I never heard back from national....Could you send me a link?

- Chris (who may be someday running HC-2 instead of PT)

 

Where did you get that? I need something that will work with the stock hinges, unfortunately. Since I use hood pins, I don't even use the stock hood latch assembly.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kool-Lude &raquo;</TD></TR><TR><TD CLASS="quote">FI cf hood with no skeleton...

Weighs about 12 lbs, but I'm not happy with the 11 nuts and bolts holding it down(no hinges or latch)... I may just trash the whole thing
</TD></TR></TABLE>

 

http://www.nasaforums.com/viewtopic.php?t=12462

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by luder94-ChrisA &raquo;</TD></TR><TR><TD CLASS="quote">Wait a minute!!!! They changed the HC-2 rules????

Where are the new rules published? They dropped it from 2700 lbs down to 2600lbs & JDM engines are finally allowed? I submitted a HC rule request form about 8 months ago to Jeremy C. & I never heard back from national....Could you send me a link?</TD></TR></TABLE>

 

Thanks, Billy! I guess they listened to my rule request after all! The system works!

 

After looking at the rules, I think the Prelude has a much better chance of being competitive in HC H2 rather than PT. The Prelude starts at PTF, but I think an H2 Prelude would push you easily up to PTD or even PTC. With the engine I was building for H1, I would have been in PTA!!!!

 

Yep, it would be PTD, as I'm running TTD right now & I'm around spec. miata pace (which is more TTE/PTE)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 117 &raquo;</TD></TR><TR><TD CLASS="quote">Where did you get that?</TD></TR></TABLE>Oh dude....easy. Start with a brand new FI cf hood, flip it up at 80, destroy sunroof and roof panel, then pull apart the skeleton from the skin
https://honda-tech.com/zerothread?id=1967574

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">I need something that will work with the stock hinges, unfortunately. Since I use hood pins, I don't even use the stock hood latch assembly.</TD></TR></TABLE>
I thought about fabbing a bracket that would mount to the stock hinges... its doable. But the skin alone is pretty flimsy. That's why I added all those bolts. I still get some movement in the middle of the hood, so I'm not "yet" satisfied with the results. I haven't had time to deal with it. If I keep it, I need to support the middle and rethink my mounting method...11 nuts are too many (especially in a fire). Is a fully bolted-down hood even legal on a race track?