being that i have the pig of the EH2s, the Si, i'm trying to think of ways to reduce weight. the first thing that comes to mind is to yank the rear seats. has anyone done this? how much weight savings are we talking about? hardly anyone ever sits in my rear seats but it can be useful on rare occasions, so if we're talking about like 10-20 pounds, i might just leave them in for convenience. what else can i pull off the car (its a daily driver, i'd like to maintain some level of comfort)? i think CF hood is on the list too. how much does OEM hood weigh?

thanks

 

Find somone with a CX, and tell them you'll trade your car for theirs plus a $1000. Si's are so heavy, it's annoying trying to make them fast. Just have that as a slow daily driver and by a cx/vx as a weekend warrior.

 

How much does A/C weigh? I bought a VX in which the previous owner added the ac option.

 

heres a list of **** i yank off my coupe to get it track ready
passenger seat, reat seats, spare tire, everything in the trunk.

the hood weighs about 45lbs.

 

Andrew, u dont need to do weight reduction... U just need me to drive ur car... Hahaha, right big bro??? Anyways, i would take off POWERSTEERING as i did in my Si... And i mean, completely take it off and if u need help feel free to call me and u kno my number... A/C is a must in Chicago weather, trust me i took mine off cuz the A/C compressor fell off and it was a horriable summer last year... Hmm, u can always go on a subway diet as i plan on too very soon, face the fact Andrew, we both need a little weight reduction ourselfs... But this is my opinion, and which i like to leave the interior stock and get rid of things that i dont need... Oh yeah, take off the cruise control, thats useless...

 

Yeah I have noticed that the hood on my hatch weighs more than the hood on my 2000 Si...what the hell?

 

If you're going to take off the power steering, then you'd better swap in a CX/VX/DX non-power steering RACK too.

The ratio on the power steering rack is intended to have the assistance, so once you get rid of the power steering pump and all, it becomes even MORE difficult to steer than an original non-P/S car does.

I swapped mine out on my 1992 Si hatchback and it was great. I used a 1993 DX rack and besides having to modify one of the mounts for the rack, it went in smoothly.

Power steering deletion not only saves a few pounds, but it also reduces the drag on your crank too. That's one less pulley that the crank has to spin up

Weight reduction on an Si?

My 1992 Si weighed 2289lbs. the last time I went to the strip. The car was like this:

Full interior minus spare and tools - even had the GS-R rear seat and front seats in, carpet, etc.
Rota Circuit 8 wheels. 12lbs. a wheel vs. 18lbs. or so for stock steelies
No A/C, no P/S - rack was swapped at this time too
No cruise control
Tanabe RD exhaust - lighter than stock
GS-R bigger front brakes

Really the only thing worth a **** to remove in terms of raw weight is the A/C, spare and tools, and the lighter wheels. Cruise and P/S don't really weigh a lot.

That weight also included a B18C5 swap too

That wasn't too terribly heavy considering, but I ended up selling that car (back to stock) and I'm almost done with my CX. I'll know the absolute truth soon enough about which is faster and by how much. I've got the same set-up going in my CX that came out of the Si.

The worst part is that the heaviest thing on the Si/EX cannot be removed easily:

The moonroof and bracing for it. No biggie if you love the roof though.

Some other things you could do to remove unwanted weight that I took of my CX hatch:

1. Tar. Your Si has tar on the front and rear floorboards, and a good bit in the rear tub too. Dry ice works great to take the tar out. CRush the dry ice up and leave it on the tar for like 45minutes, then hit it with a hammer and chisel. This won't save much weight, but every little bit helps.

2. Firewall mat. What is that? It's a thick, heavy-*** mat that sits behind your dash and on the firewall. I'm sure it's for sound deadining and maybe for insulation, but when you ask for those things from a mat, it has to be heavy. You'll have to take the dash out, but you'll save some weight, right?

3. Airbag(s). Don't just pull out the steering wheel - there's an SRS computer behind the dash too, and a big-*** wiring harness and sensors. It adds up when put together. If you have the passenger bag, than you might want to make a dummy cover or get a 1992-1993 dash.

4. Knee bolster bar. There's a knee bolster bar behind the dash too. Wighs a few pounds, and doesn't appear to be a huge safety thing eother.

*5. Bumper supports. They are pretty heavy - one in the front and the rear.

6. Rear seats and all of the seatbelt stuff for them too. People yank out the rear seats but leave in the heavy seatbelt **** back there - why? If you really plan on keeping people from there, then delete the seat belts too, right?

I have a * by the 5 because this is something I personally will NOT do in the name of weight savings. They do help the car absorb impact, and if your car gets totalled because of them being gone, or that little 5mph bump really crushes your car because they weren't there, then so what if you saved a few lbs?

These are just a few things you could do. I'm sure there's more, but I can't think of any right now.

 

a couple i had in mine

-do not fill the gas tank, too much weight

-also, remove the windshield wiper system, such as the the pump, tank, hoses, etc.
again, this may not be alot of weight but a little here and there makes a different.

-mirrors, if possible, buy some spoons/visions. if you compare these to the stock ones, theres a few pounds different.

-rip the ac, including the evaporator

-if your dragging, remove the front sway bar, bar weighs alot too

-if possible, buy some 13' vx wheels and run P185/60R13 yoko's or sumitomo
not only its lighter (with wheel and tire weights at exactly 24lbs.) it can shorter your overall gear ratios.

-remove cruise control, all of it

-if possible, add a flywheel, with all the bolts ons in a B18c1 (dc header, exhausts, straight pipe, crank pulley, intake,cam gears, skunk2 intake)a friend hit 13.7's in a '92 civic si with the same set up above and a few mention by B18C5-EH2

 

I don't think the rear seat is worth it. I took mine out and it weighs what like 5-10lbs? I have a N1 catback and that **** really loud without the reaar seats in place.

 

I have a 93 cx and I took out my reat seats and everything else back there. They do not weigh that much but who cares, it is still weight reduction.

 

b18c5eh2: dude, 2289 is not too shabby at all, considering the Si weighs like 2400+ stock?

thanks for all your suggestions... they were really helpful! i think i'll just stick with the spare and jack removal. just out of curiosity, how much does A/C weigh?


mantic - that was exactly what i was looking for. i agree - i've held type R rear seats b4 and i know they were pretty light. i guess its just not worth it...

thanks..

jimmy- shuddup! one bad night and you're gonna hold me to that for the rest of my life? wait'll i run a 14.8 at the track and then you can make fun of me hahahahahaha......

i cant put A/C back cuz my car never had it and so it's not wired up. how hard would it be to add A/C to my car if i never had it to begin with? i dont think i'll survive the chicago summer without it.... also i already removed P/S and cruise control.... and i already AM on the stinking subway diet!!!


[Modified by ajchen, 3:10 PM 4/22/2002]

 

Stock weight for my 1992 Si was rated at 2326lbs., so at 2289lbs. it was 37lbs. lighter then stock even though i had a DOHC VTEC motor and bigger front brakes on it.

That car was not stripped at all though really. I don't know what the weight could have dropped to had I really stripped it out - I didn't want to rape such a nice car. I knew i'd get a CX to strip like hell one day, so stripping that Si would have sucked because it all would have had to go back in anyways when I sold it.

Good luck!

 

To completely remove A/C. u would have to take off the dash... There is core's that run thru ur firewall i believe and there is a whole bunch of hoses in the engine bay... Am i right B18C5-EH2???

 

what are the specs on the 92 eh2 si?

 

Actually the evaporator core for the A/C is accessable from taking off the glove box. you will have to "gut" the core out of the plastic "box" and return the box minus the core if you want your ventilation to work right.

 

Hey Tom,

Is it worth taking out the evaporator core?? Where's the bulk of the weight for A/C?

-Rod

 

Oh, and by "specs" for the 1992 Si hatch what exactly do you mean? Weight?

Answers to any weight questions about any 1992-1993 hatchback or 4-door can be found here:

https://honda-tech.com/zerothread?id=150315

As for more specs, i'll try off the top of my head:

1992 Civic Si hatchback. Note: Granada Black was an Si ONLY color. There were no factory black CX, DX, or VX hatches.

Engine: D16Z6 125hp SOHC VTEC 1.6L.
Weight: 2326lbs.
Wheel/tire: 185/60/14 steel wheels with full covers.
Available ONLY with manual tranny.
4-wheel disc brakes
Front swaybar

Ohter fun features not found on other hatches in 1992:

Unique print on clith seats and door inserts
Power moonroof - tilt and slide
Cruise Control
Power steering (also found on DX auto)
Rear washer wiper and delay front wipers (also on DX though)
Rear hatch area light (Dx may have one, not sure)
Clock
3 sun visors - 2 normal, and one mini visor in the middle
Power mirrors
Tilt steering column (DX had it too)
Tachometer (VX had one too)

That's about all I can think of from memory right now. I'll add more later as it comes to me.

Hope that answered some Q's you might have had!