'91 faster than a '97? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Fourgig · 04-30-2002, 06:36 PM

Got two questions for all you 240SX gurus!

I have a base model '91 fastback (120k miles) and a base model '97 240SX (40k miles).  The 91' seems to be quite a bit faster, especially when doing hard accelerations on the highway.  Is that normal?  I know the '97 is about 200lbs heavier than the '91, but I don't think it should make that much of a difference.  The '91 is out of commission right now so I can't do a GTech test or anything.  Can someone enlighten me?

Also, when I floor the accelerator on the '97, there's a squeal for about a second, sounds kind of like a belt slipping.  Can't really tell where the sound's coming from though.  Anyone run across this happening on their cars?

SRskillaDET · 04-30-2002, 06:53 PM

i dunno about the squealing noise, but i know that the '91 has a more aggressive cam profile which could account for the better power.  i am selling some '91 cams from my car, you could drop them in the '97 and get some more kick out of it. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'>

240meowth · 04-30-2002, 07:04 PM

it's true the 97 is heavier, but the 97 is tuned better for mid end performance as well.  if you look at the stats for the two, they performace about the same.  i think the reason is because the car's design, for example... u going 50 in a prelude feels fast, again, u go 50 in a McLaren it feels like you are crawling.  but that's just a comparison to the extream.

roast · 04-30-2002, 07:30 PM

Did you do the accessory belts lately? Could be a belt that over tightened, or old... =)

Fourgig · 04-30-2002, 11:47 PM

I bought the '97 about a month ago but haven't touched anything on the car yet.  I guess I should take a look at the belts and make sure they're all ok.  When I bought the car, the mechanic that checked out the car told me that the steering rods(?) are close to needing to be replaced.  Think that might cause a squeak?

Krunko · 05-01-2002, 01:18 PM

200lb makes a pretty big difference too.  If you get cams from PDM they are supposed to make about a 10hp difference over the stock cams (DOHC) if you have intake,  and exhuast already.

DriftFC3s · 05-01-2002, 02:56 PM

i have two friends who both have 240's. one is a 92 hatch and the other is a 97 se. every time they race the 97 pulls as they shift every gear. there must be something wrong with your 97. maybe the belts are not letting it get all of the power out.

04-30-2002, 06:53 PM	#2
SRskillaDET Leaky Injector Join Date: Oct 2001 Posts: 95 Trader Rating: (0) Feedback Score: 0 reviews	i dunno about the squealing noise, but i know that the '91 has a more aggressive cam profile which could account for the better power.  i am selling some '91 cams from my car, you could drop them in the '97 and get some more kick out of it. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'> __________________ '91 fastback base model KA is dead at 202,186 miles

04-30-2002, 07:04 PM	#3
240meowth Nissanaholic! Join Date: Dec 2001 Location: torrance, ca Age: 38 Posts: 2,399 Trader Rating: (4) Feedback Score: 4 reviews	it's true the 97 is heavier, but the 97 is tuned better for mid end performance as well.  if you look at the stats for the two, they performace about the same.  i think the reason is because the car's design, for example... u going 50 in a prelude feels fast, again, u go 50 in a McLaren it feels like you are crawling.  but that's just a comparison to the extream. __________________

04-30-2002, 07:30 PM	#4
roast Leaky Injector Join Date: Mar 2002 Posts: 104 Trader Rating: (0) Feedback Score: 0 reviews	Did you do the accessory belts lately? Could be a belt that over tightened, or old... =) __________________ Richard Experience is the name every one gives to their mistakes.

05-01-2002, 02:56 PM	#7
DriftFC3s Join Date: Mar 2002 Posts: 42 Trader Rating: (0) Feedback Score: 0 reviews	i have two friends who both have 240's. one is a 92 hatch and the other is a 97 se. every time they race the 97 pulls as they shift every gear. there must be something wrong with your 97. maybe the belts are not letting it get all of the power out. __________________ It's better to be Rotary than to be Pist- On....

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04-30-2002, 06:36 PM	#1
Fourgig Join Date: Apr 2002 Posts: 44 Trader Rating: (0) Feedback Score: 0 reviews	Got two questions for all you 240SX gurus! I have a base model '91 fastback (120k miles) and a base model '97 240SX (40k miles).  The 91' seems to be quite a bit faster, especially when doing hard accelerations on the highway.  Is that normal?  I know the '97 is about 200lbs heavier than the '91, but I don't think it should make that much of a difference.  The '91 is out of commission right now so I can't do a GTech test or anything.  Can someone enlighten me? Also, when I floor the accelerator on the '97, there's a squeal for about a second, sounds kind of like a belt slipping.  Can't really tell where the sound's coming from though.  Anyone run across this happening on their cars?

04-30-2002, 11:47 PM	#5
Fourgig Join Date: Apr 2002 Posts: 44 Trader Rating: (0) Feedback Score: 0 reviews	I bought the '97 about a month ago but haven't touched anything on the car yet.  I guess I should take a look at the belts and make sure they're all ok.  When I bought the car, the mechanic that checked out the car told me that the steering rods(?) are close to needing to be replaced.  Think that might cause a squeak?

05-01-2002, 01:18 PM	#6
Krunko Zilvia Junkie Join Date: Sep 2001 Location: Sherman Oaks, CA Posts: 349 Trader Rating: (0) Feedback Score: 0 reviews	200lb makes a pretty big difference too.  If you get cams from PDM they are supposed to make about a 10hp difference over the stock cams (DOHC) if you have intake,  and exhuast already.