That's right, I have a '91 si with the shitty heavier door bars, etc.

How to get it to the weight of an '88 hf?

*almost anything goes, but keep it street legal/ within reason.....

Here, I'll start:

1. Remove interior...

 

trade out the doors.

 

cut the car in half and then weld it back together without the passenger area

 

IIRC the hf had aluminum drums. find some at a junk yard.

not to state the obvious, but swap out your spare and jack for a AAA card. it's much lighter :D.

remove anything that does not serve a purpose. most car companies put the same brackets and whatnot in every car. remove every bracket and bolt in the engine bay and all around the car that doesn't serve a function. put everything you remove in a box and weigh it. you might be surprised. a buddy of mine with a WRX shaved like 20 lbs in stuff that just didn;t have to be there.

that's all I can think of.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Noah ***** &raquo;</TD></TR><TR><TD CLASS="quote">trade out the doors.</TD></TR></TABLE>

 

.....you do realize that the doors aren't interchangeable, right?

 

Remove the sunroof, that's about 26-30 lbs.
Remove the rear wiper and motor.
Remove front bumper supports and swap over to a HF bumper, it weighs about 1/3 of the Si bumper.
Carbon fiber hood.
Light weight battery - Hawker Odyssey weighs about 11.5 lbs

All that should get you around 80 lbs lighter.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shoden &raquo;</TD></TR><TR><TD CLASS="quote">Remove the sunroof, that's about 26-30 lbs.
Remove the rear wiper and motor.
Remove front bumper supports and swap over to a HF bumper, it weighs about 1/3 of the Si bumper.
Carbon fiber hood.
Light weight battery - Hawker Odyssey weighs about 11.5 lbs

All that should get you around 80 lbs lighter.</TD></TR></TABLE>

All that, plus most of the HFs didn't have a/c, and the HF had a 3 gallon smaller gas tank. That should be another 50lbs.

 

Swap out the windows for lexan. And make sure you rip off the parts of the dash you don't need... a glovebox is a sign of weakness. (Oh yeah, there's 50+ pounds)

 

.....apparently I gotta lose 360lbs according to this website:

http://www.d16a.com/ef_weights.htm

 

There is, of course, one simple way to get the weight of your car down to that of a 1988 HF: sell it and buy a 1988 HF. This is not a joke. The truth is that it would be quite hard to get the weight of a 1990-1991 SI to be that low. The doors do not interchagne. And the sunroof cannot be lost that easily. If you really want a light car, just bite the bullet and sell what you have. This is what I did when I wanted something lighter than my 1988 SI. And if your 1991 SI is in good shape, you just might come out ahead on the deal.

You don't like those funky looking HF seats? Don't worry. Just swap in SI stuff. The truth is that you can have everything from an SI but the sunroof in an HF.

 

get the 1988 HF, and swap in SI parts you like...best option and least headaches.

- Nathan

 

if you wanted to get hardcore, you could get a blowtorch and start cutting off any non-structural metal. it can be found here and there and you can shed quite a bit of weight by chopping off this and that.

 

also, extra unused wiring in tjhe harness can add quite a bit of weight if u got a gutted interior (no dash no ac no sunroof.)

 

i have a si and a hf i did a swap and i swaped all the interior over to the hf from the si b/c the interior in the hf was this nasty *** blue--everything fits the same except the seats. the bolt pattern on the floor for the seats in the hf are different from the si. and some of the selt belts are in the doors and some are on the accutally body of the car. thoes are the only 2 diff.
prob easier to buy an hf- i picked up mine in really good cond for 700.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StorminMatt &raquo;</TD></TR><TR><TD CLASS="quote">There is, of course, one simple way to get the weight of your car down to that of a 1988 HF: sell it and buy a 1988 HF. This is not a joke. The truth is that it would be quite hard to get the weight of a 1990-1991 SI to be that low. The doors do not interchagne. And the sunroof cannot be lost that easily. If you really want a light car, just bite the bullet and sell what you have. This is what I did when I wanted something lighter than my 1988 SI. And if your 1991 SI is in good shape, you just might come out ahead on the deal.

You don't like those funky looking HF seats? Don't worry. Just swap in SI stuff. The truth is that you can have everything from an SI but the sunroof in an HF.</TD></TR></TABLE>

I feel you on that one..... but what I can't figure out is how they added 300lbs to basically the same damn car..... Structurally the same car?!

 

power everything!

 

The only power thing on the CRX is the sunroof, so "power everything" isn't the answer.

Instead, blame it on the heavier bumpers, sunroof, side impact beams, door mounted seat belts, rear disc brakes, heavier duty suspension, rear wiper, etc.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shoden &raquo;</TD></TR><TR><TD CLASS="quote">The only power thing on the CRX is the sunroof, so "power everything" isn't the answer.

Instead, blame it on the heavier bumpers, sunroof, side impact beams, door mounted seat belts, rear disc brakes, heavier duty suspension, rear wiper, etc.</TD></TR></TABLE>


Ok, so you're saying that if I remove all those things and replace them with 88 hf version I'll be at that same weight? DONE. I'm taking you up on that proposition!

 

yeah, but then you have drum brakes and a weaker suspension... point of diminishing returns. I guess if you just go to the strip that's fine. what about auto-x'ing and track days and whatnot? weight is a big deal, but brakes and suspension helps.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StorminMatt &raquo;</TD></TR><TR><TD CLASS="quote">The truth is that you can have everything from an SI but the sunroof in an HF.</TD></TR></TABLE>

And the doors

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IggDawg &raquo;</TD></TR><TR><TD CLASS="quote"> swap out your spare and jack for a AAA card. </TD></TR></TABLE>

AAA Premier member here. One tow of 200 miles and 3 100 miles tows.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by "shoden" &raquo;</TD></TR><TR><TD CLASS="quote">
Remove front bumper supports and swap over to a HF bumper, it weighs about 1/3 of the Si bumper.</TD></TR></TABLE>

I believe you are refering to the US front bumper/supports. In addition, the JDM rear bumper & support are also lighter.


Remove the sound deadening material.




Modified by milk at 11:02 AM 9/14/2003

 

Take a mirror off 5 lb. The engine is another 100 or so more lb on the SI, take the AC off and bumper supports, Dremel the bumpers, or go with some WWest FIBER GLASS bumpers only then take off the bumper supports. Though it would look messed up without the door sills, Then get a CF or a fiber glass sun roof plug, take out the wiper and weld the hole shut, The HF in 88 also had a different suspension in the back like the type R and also I've heard the HF had weaker fenders dunno if it's true.....

 

the sound deadening material adds up, use dry ice to remove it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StorminMatt &raquo;</TD></TR><TR><TD CLASS="quote">There is, of course, one simple way to get the weight of your car down to that of a 1988 HF: sell it and buy a 1988 HF. This is not a joke. The truth is that it would be quite hard to get the weight of a 1990-1991 SI to be that low. The doors do not interchagne. And the sunroof cannot be lost that easily. If you really want a light car, just bite the bullet and sell what you have. This is what I did when I wanted something lighter than my 1988 SI. And if your 1991 SI is in good shape, you just might come out ahead on the deal.

You don't like those funky looking HF seats? Don't worry. Just swap in SI stuff. The truth is that you can have everything from an SI but the sunroof in an HF.</TD></TR></TABLE>
You know I try never to hate on HT, everyone has some valid ideas, but what you want to do is too dumb not to comment on, sorry. '91 was the last CRX Si and hence WILL be collectable in a few years. Just garage it and follow StorminMatt's advice.
Destroy a perfectly good VALUABLE car, for what?
Good condition CRX Si's are ALREADY becoming scarce. Just try to find one.
Just buy an 88 Hf or an 85 they're even lighter.
Think of it as an investment you can drive to work in lol.
Just my .02 cents