By numerous requests, here is what I did to do the 5 lug conversion.
Here are the parts I used for the 5 lug converion on my 4th gen Si. To make it easier on everyone, I recommend getting the whole front and rear knuckle assembly from a 5th gen Prelude at a local wreckers. This way it is cheaper and more cost effective than searching specific parts. The knuckle assembly includes the hubs, bearings, rotors and calipers. This conversion is very similar to a 5 lug conversion on a Civic or Integra. The only difference is that the 4th gen Prelude does not require the rear lower control arms from a ITR since we have disc brakes already.
Here is a picture of the front knuckle assembly minus the rotor and caliper.
If you already have a VTEC model 4th gen, you will be able to use your existing caliper. As for ABS, you can use the existing abs sensors from the 4th gen.
Here are pictures of the front knuckle assembly in the car with the caliper, rotor and abs sensor in place.
As for the rear, the knuckle is also needed to make it easier to find at a wrecker and install. The rear brakes I used was from my 4th gen since they have the same part number. As of now I have no problems at all. Sorry but no pics of the rear.
Note: You cannot just swap the hubs because the measurements are different for both. The mounting surfaces have different tapers to them and have different lengths to them. Trust me on this, we inspected each part closely to see if this would work but it will not.
This swap was very easy to do when you have all the tools and parts. It was a straight bolt in affair. This surprised me and my buddies. People on this and other boards said that it was nearly impossible or not worth it.
The main reason I did this conversion was to upgrade my Si's stock brakes. I could've used a VTEC caliper and rotor, but not many wreckers here would let me purchase just the caliper. So I decided to just to do the 5 lug conversion. In the end, I was very pleased with the results. My brakes are so much better now. The bonus of this conversion is the wheel selection has greatly increased. I am now able to select specific offsets without worrying about rubbing issues.
Last notes.
Don't forget to bleed the brakes. Right now I'm using Motul brake fluid and it works excellent. Also have several cotter pins handy, we don't want the suspension coming apart while driving. 5 lug wheels are also needed as well as a spare. As of now, I don't have a 5th gen spare, but I don't mind. If you are lucky with finding the parts, the conversion shouldn't cost that much at all. An example of this is finding the wheels extremely cheap. I got my wheels for $100CDN. As for the rotors and calipers, get the rotors machined and the caliper rebuilt if necessary. I think that is all.
One more thing. Have fun in this project and good luck in finding the necessary parts. It took me a few months to find the parts because there were not many wrecked 5th gens at my local wreckers.
Many thanks go out to Gerard, Paulo and Steve at Keep Performancelab.
Pics of the final product can be seen in the next post.
Nice....sh!t. I also wish I had money to burn for the swap and rims. But, who knows.
The stock 5th gen wheels actually looks good on the 4th gen.
I say mad props to u for actually doing it.
treniew7 - The lip is a Spoon or a replica of a Spoon lip. I can't really say it's the real deal because I don't know if it is. My friends and I saw it on a JDM front clip at a local wrecker. As for getting another one, contact our moderator Satan_SRV. He is making excellent quality replicas.
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craig 94 lude & 94 Z28.
"we do it because what we do in the gym transfers over into the rest of our lives and changes us, physically, mentally, maybe even spiritually."
Very nice You think that changing the wheel bearing/hub assembly wouldn't work? If the outer side and thickness of the bearing is the same on both then you should be able to swap them... Also did you use your 4th gen drive shaft? Did they extend a bit further outside of the hub assembly?
Quote:
Originally posted by Absolut I wonder what the differance is for a 4th gen w/ 4WS...
I would probabally have to source rear hubs from a 5th gen 4WS from the UK, Japan or AUS.
You shouldn't need any special parts since the only different in the rear is the subframe and the 4WS has no lower arm B, it's the 4WS arm that's attached there.
How long have you had this conversion Prelude_2_NV??? I've had mine since Dec 99. My car's a 92 S. I'm in the process of getting it painted right now. I'll post some pics after it's painted. Here's a list of all the parts I used to make the conversion.
-5th Gen front bearings, hubs and rotors
-5th Gen rear spindles, rotors and hubs (comes w/ bearings)
-4th Gen front VTEC calipers (you'll need this if you're 4th Gen's non-VTEC or do the NSX front caliper conversion)
-VTEC front brake pads (duh) and regular brake pads for the rear
You'll need access to a press to press out the fron't bearings, everything else is a snap. Good luck to all who wants to attempt this.
Originally posted by MugenDriver How long have you had this conversion Prelude_2_NV??? I've had mine since Dec 99. My car's a 92 S. I'm in the process of getting it painted right now. I'll post some pics after it's painted. Here's a list of all the parts I used to make the conversion.
-5th Gen front bearings, hubs and rotors
-5th Gen rear spindles, rotors and hubs (comes w/ bearings)
-4th Gen front VTEC calipers (you'll need this if you're 4th Gen's non-VTEC or do the NSX front caliper conversion)
-VTEC front brake pads (duh) and regular brake pads for the rear
You'll need access to a press to press out the fron't bearings, everything else is a snap. Good luck to all who wants to attempt this.
Looks like you are the first one to ever do this mod dude. I've had mine on since the April 03. You were ahead of the game, much props to you!
Originally posted by Forbidden You shouldn't need any special parts since the only different in the rear is the subframe and the 4WS has no lower arm B, it's the 4WS arm that's attached there.
Right, this is what I'm thinking too, but I've got a couple questions:
1. Do you just need the hub, or the whole spindle ass'y?
2. Using the 5th gen knuckles, where would you mount the factory swaybar?
3. Who's going to guinea pig this?
If you only swap out the hub/knuckle, then it souldn't be too much of a problem. If you're replacing the spindle, then I wonder if the 5th gen spindle will have a place for the 4ws arm to attach, instead of lower control arm B. Also, the 4th gen sway bolts to the knuckle, but not on 5th gens. If you replace the knuckle with the 5th gen one, you lose your swaybar...unless you can use the 5th gen lower control arms and mount it that way.
You say we have to bleed the brakes....but if we already have the VTEC model and are keeping the calipers I don't think I have to right? since i'm not disconnecting anything...?
Originally posted by Forbidden Prelude_2_NV: did you use your 4th gen driveshaft? If so did they extend a bit further then they did with the 4th gen knuckle assembly?
Yes I did. No noticable difference when the knuckle assembly was bolted in. Only visual difference is that the wheels seem to stick in more.
Yes I did. No noticable difference when the knuckle assembly was bolted in. Only visual difference is that the wheels seem to stick in more.
I think the hub assembly is a bit "thinner" on the 5th gen, at least that's the conclusion I came to when I tried fitting a 5th gen driveshaft on my 4th gen since the end of the driveshaft wouldn't stick out enough to put the hub nut on.
I'll take a pic to compare both driveshaft when I change my driver side driveshaft later this month.
Originally posted by azjs Noticing how they "stick in" a little more, have you done anything to combat it? Or have you left it? I've noticed it too...
-az
I have done nothing to fix the problem. I have no more money to spend on more toys for the lude as the new semester of school will be starting in a few weeks.
Since that the car is lowered, it's cambered a bit, and gives the illusion that the wheels are tucked in more. But once you straighten out the wheels, it might fix it, or perhaps since you utilizes the 5th Gen knuckles, that might also be the cause of it being tucked in some more. Well, that's what I think anyway.
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As for the rotors and calipers, get the rotors machined and the caliper rebuilt if necessary. I think that is all.
But, who knows. 
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