I just bought a 1991 240. It's got a twin cam as you all know, plus it's got LSD, Apex Exhaust, and an HKS intake. My 95 only has the same Apex Exhaust. HOWEVER, my 95 is way faster.
I raced my friend N/A 88 MR2 (it runs 16.97) and it was totally even. I race this same car in my 95, and I take him by several cars.
I don't understand how a 1991 KA24DE is slower than a 1995 KA24DE which is supposed to have the same power, plus it has more mods.
Is there maybe somthing wrong with the 91? It's had a recent tuneup... Or is that typical? What should I check for a possible power loss?
Thanks,
David.
S13 slower than S14??!
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quiksilvia
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my 89 240sx gtech'd at a 16.9 1/4 mile 
, i know its not as accurate as track times, but to give you an idea.
she seems to run really good, its the body that needs help
I have done new plugs, wires, intake, waterpump, belts, timing chain kit, and oil pump. My only performace problem is my exhaust has more leaks than pantyhose trying to holding water
, i know its not as accurate as track times, but to give you an idea.she seems to run really good, its the body that needs help
I have done new plugs, wires, intake, waterpump, belts, timing chain kit, and oil pump. My only performace problem is my exhaust has more leaks than pantyhose trying to holding water
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Nismo_Freak
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goshoryuken
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The check engine light came on for a couple minutes the other day.. I cleaned out the throttlebody and the MAS yesterday, it seemed to have helped performance a bit. But it still like surges, it's hard to explain, it's not smooth acceleration, it's fast, then slow, then fast. I'm gonna check the timing as soon as my friend gives me his damn timing light.
I didnt gain any performance from my ACT clutch, it's nice, but I think my stock clutch was pretty new in the first place. The clutch in the 91 is pretty soft, but maybe i'm just used to an ACT now. The worse thing is I raced a damn V6 Tiberion and he pulled about a car on me
My S14 would have rocked him...
David.
I didnt gain any performance from my ACT clutch, it's nice, but I think my stock clutch was pretty new in the first place. The clutch in the 91 is pretty soft, but maybe i'm just used to an ACT now. The worse thing is I raced a damn V6 Tiberion and he pulled about a car on me
My S14 would have rocked him...David.
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Nismo_Freak
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240SXer wrote:Ya, I was expecting it to be faster than my S14 since it has more mods, but it's not... Anyone know why my 91's redline is 6900 and my 95 is 6500 with the same engine?
because the '91s have the hotter exhaust cam? that's my guess, anyway.
i'd agree with the get-a-tuneup comments; the S13 i got recently is noticeably faster than my S14 was.
All things being equal, the S13 will be the faster car. It weighs 100 lbs less than the S14 with the same power (stock). Yours needs some attention - check the ECU codes, a bad sensor will obliterate any notions of performance. Surging can be caused by a variety of maladies...clogged EGR and O2 sensor were the cause of mine.
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Thee 240sx Owner
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I would seriously recommend checkin your fuel pump... i had the same problem with the surging... from about 3,500 to 4000RPM my motor felt like it lost power and then would regain it once it got past that... ended up being my fuel pump going bad... till one day it seized up and would let the car start.... i would check my fuel pressure and see where your at on that... if its low then thats probably your problem right there...
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Nismo_Freak
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Meantime wrote:All things being equal, the S13 will be the faster car. It weighs 100 lbs less than the S14 with the same power (stock). Yours needs some attention - check the ECU codes, a bad sensor will obliterate any notions of performance. Surging can be caused by a variety of maladies...clogged EGR and O2 sensor were the cause of mine.
My base model S14 weighs less than the S13 SE by about 120 lbs.
Both cars weigh roughly the same. The coupe version of the S13 is the lightest of them all. Somewhere in the 2740 area I believe, with my S14 weighing 2760. SE's are all over 2800. Things like power options, moonroofs, rear sway bars, and larger wheels/tires all add up.
Currently my S14 weighed 2690 w/ 3/4 tank of gas on an accurate digital scale.
, drop in an RB and you're set!!-
singlecamhonduhkilla
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Nismo_Freak
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2400lbs. is a seriously stripped out 240SX
I've removed a fair amount of weight from the car and the only next items are luxury items such as the a/c (needed in Texas) and powersteering (not needed).
Granted the PS and A/C accessories will all add up in weight and accessory drag, I can't see the reason for removing them for a few tenths at most in a 15 second car.
Not worth having to build your forearms to turn the car and run around in a 120 degree cabin IMO.
I've removed a fair amount of weight from the car and the only next items are luxury items such as the a/c (needed in Texas) and powersteering (not needed).
Granted the PS and A/C accessories will all add up in weight and accessory drag, I can't see the reason for removing them for a few tenths at most in a 15 second car.
Not worth having to build your forearms to turn the car and run around in a 120 degree cabin IMO.