I am racing this 1992 prelude on a 1/4 mile oval on pavement. The engine drops way down coming out of the turns and takes forever to come up. Because it such a small track, I am stuck in 2nd gear. Can I increase the rpms coming out of the turns by modifying anything? The engine must appear to be stock when I am done.

 

yeah, get a different final drive

 

Have you done anything to the car? If not, there's plenty you can do to increase you pick up out of the corners. Crower stage 1 cams have great mid range power, and they work with your stock valve train. If you're still completely stock, invest in a nice eBay intake, Megan header, Magnaflow cat, and whatever exhaust you want. That right there will be a big help

 

buy tires with a smaller profile.. itll will raise ur engine rpms when the car is at the same speed.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by marks_lude &raquo;</TD></TR><TR><TD CLASS="quote">buy tires with a smaller profile.. itll will raise ur engine rpms when the car is at the same speed.</TD></TR></TABLE>

Wrong. Your RPMs will be the same, your speedo will be off

 

Does everything have to appear stock? Like are you going to be busted for having a CAI or ebay pipe? If so, are you asking us to help you cheat?

Besides that, an aftermarket header and intake will give you a good start. High-flow cat along with 2.5" piping, if you have the funds, will pretty much round out all the popular "low cost" stuff without having to crack open the motor.

As far as just strictly increasing your rpms........drive faster?

 

Also, learn how to heel-and-toe downshift. It helps to keeps your RPMs up and wears down your synchros slower.

 

Honestly, I will be the a-hole here by saying that what you are talking about requires a modification in the driving and not necessarily the car. Try some of the above mentioned and see how that helps. The prelude is a great cornering car, you shouldn't have a problem rocketing out of corners if you have good shift and throttle control skills. I would reccomend attending a high performance driving class, they teach you a lot. If after that you are not satisfied, then try some subtle mods.

The key is get to know your car and break its limits, then re-establish what the limits are and set them to your standards.

 

lightweight flywheel, an lsd, and a shorter final drive...you'll definately appear stock.

you could even improve corner and exit speed with softer compound tires...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by InvaderTrax &raquo;</TD></TR><TR><TD CLASS="quote">Wrong. Your RPMs will be the same, your speedo will be off</TD></TR></TABLE>

WRONG! You need to re-evaluate your statement. Different tire profiles change the over all diameter and effectively changes gearing. That is why the speedo is off. Sheesh
Pirate

 

The lude is an automatic. I have been racing for 4 years. The tires are limited by track rules of 195-60-14. For this 1/4 mile track, I do accelerate faster than 95% of the other cars. Mostly CRX's and a couple of Saturn SC2's. As as far as my driving abilty, I have been in the top 10 in points for 3 years. I probably could use some "high performance" lessons though. I guess my real question is, can I use the chip shown on Ebay that goes into the ECU? It's roughly $20 and says it will enahnce performance by 5-20hp. My problem in the turns is nore of a pushing problems, then the wheels starta spinnin and smokin. I have tried going in a little slower to come out faster, but then passed or hit in the ***. I can feel the RPM's go way down when I double foot the brake and throttle. Even when I let off the brake the time it trakes to get the r's up is killing me.

 

nothing that just "plugs" into your ECU is worth it. Anything like that takes tuning... I'm sure you can find some soft compound tires of that size which will help to keep your grip and speed through the turns.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by diasioiii &raquo;</TD></TR><TR><TD CLASS="quote"> I guess my real question is, can I use the chip shown on Ebay that goes into the ECU? It's roughly $20 and says it will enahnce performance by 5-20hp.</TD></TR></TABLE>

That's the biggest rip-off/scam on ebay.

Please don't.

 

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

WRONG! You need to re-evaluate your statement. Different tire profiles change the over all diameter and effectively changes gearing. That is why the speedo is off. Sheesh
Pirate</TD></TR></TABLE>

Ok. Say with the factory size tires 80mph=4k RPM in 5th. Now, with a smaller tire, the speedometer wouldn't read 80=4k, but at 4k would a radar gun say 80mph?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cgo_62 &raquo;</TD></TR><TR><TD CLASS="quote">lightweight flywheel, an lsd, and a shorter final drive...you'll definately appear stock.

you could even improve corner and exit speed with softer compound tires...

</TD></TR></TABLE>

great idea to consider

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by InvaderTrax &raquo;</TD></TR><TR><TD CLASS="quote">
Ok. Say with the factory size tires 80mph=4k RPM in 5th. Now, with a smaller tire, the speedometer wouldn't read 80=4k, but at 4k would a radar gun say 80mph?</TD></TR></TABLE>

do you know what you are talking about??? if you had read anyone of pirate's threads you he does. if your speedo says 80mph @ 4k rpms with stock tires, its still going to say the same thing with any size tires. but a radar gun is going to say &lt;80mph. the vss is located in the tranny, before the tires' size even comes into effect. marks_lude's post is correct. with smaller tires, at same rpms, your going slower. so at the same speed (by the gun, not speedo), rpms are increased. if you dont believe it, check out the Transmission/RPM/Speed Calculator here.
http://crx.honda-perf.org/math/index.html

 

it's simple.... a smaller diameter would mean it takes more revolutions to go the same distance as a larger diameter.

But you would have to have drasticly smaller tires and wheels compared to stock. But if your rules state you have to have stock tires then this whole point is moot.

 

Two things:

A) If you put that ebay chip in your car, I will hit you.

B) I'm glad you are takin it to the track and have lots of seat time. In all honesty the problem may just be the fact that your car is an automatic.

What types of modifications do you have done to your car right now?

 

No mods allowed. Auto may be the problem, I agree. I have removed the power steering pump, AC, heater core, and the whole interior. It feels like the brake power booster is sucking the power from the motor. At one point during a 20 lap race the booster seemed to fail, and the car did much better coming out of the turn. But, I was going in way to fast and pushed alot. Needless to say I had to 2 foot the brakes and that barely worked. I appreciate the responses about tire size. But, I have some race proven facts to share. Try to keep up, this is good stuff for you street " cough...cough" racers.

- Car came stock with with 205-55-15
- I first put on 195-65-14 as the rules stated.
-On a 1/4 mile track, with the 195-65's, the car did not hit rev limiter and a 98 civic 1.6ltr beat me.
- Next race put on the 195-60-14's and hit the rev limiter about half way up the staight , civic did not even come close.
- These tires are only a 1/4 inch shorter and made that much difference. kinda cool
- Next race I tried something even more drastic. I put on 185-65-14. This enable me to hit rev limiter way sooner and shift ito 3rd for about half the striaght. In doing so I got more striaght away speed but unable to control the car enough to get into turns.
If anyone was able to follow along with this, you are a racer. From all of the input I have received, I think the softer compound tire may be the way to go. Any thoughts on using something to lesson braking on certain wheels?

 

the title "1992 Prelude Si non-vtech "

maybe the problem is that there are no ludes with vtech phones in them.

that and ur whip is auto.

 

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

Ok. Say with the factory size tires 80mph=4k RPM in 5th. Now, with a smaller tire, the speedometer wouldn't read 80=4k, but at 4k would a radar gun say 80mph?</TD></TR></TABLE>


haha, you're just digging yourself in a hole, just accept that your first statement was completely wrong and don't be so quick to tell other people that they are wrong when you are unsure yourself

 

I bought the Mugen raching chip that goes on the computer, (p14), so that thing doesn't work? It was only 20 bucks, e-mail me with an answer at meanshyguy2003@yahoo.com, thanks

 

No. The chip is absolutely worthless and has nothing to do with Mugen other then a little sticker on the top. You successfully wasted $20

 

mmmmm
let off gas or brake (whichever you need to do for a specific corner) and gas throught the apex of the turn?
idk
what the other dude said, lsd all the way ftmfw!

 

what is lsd?