Dyno'd my stock s13 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Teb74 · 09-27-2004, 08:59 AM

Just wanted some opinions and anwsers on my pulls from this weekend at Torquefreaks in Portland, A/F metering was also included as a package... My '91 KA is very much stock with 114k miles on it, only "mod" would be a K&N drop in filter, Pulls were done in 3rd gear. I thought peak torque was made at 4400RPM? Does that have anything to do with the pull being in 3rd? My friend's also ran their cars with a much smoother HP/TQ curve, why's mine so shaky? Also my car dropped 7hp by the 3rd run.. Quite a bit for such a short period, cooling problem? Also any insight on my A/F ratio would be great. Looking foward to hearing your replies!

*sykikchimp* · 09-27-2004, 10:19 AM

for reference.. this is my almost stock 240 with intake/exhaust

MakotoS13 · 09-27-2004, 10:23 AM

holy inconsistency batman!

KLR142 · 09-27-2004, 10:24 AM

Well, Zak's car actually also has some flowmaster muffler that the P/O put on the car. The piping doesn't seem any different from stock though. We also took out the resonator as well, so it has a bit more intake sound as well...

And here's his Dyno sheet.

If you wanna see a BIG version of the image, look HERE!

So we want to know what you guys think about the car losing power as we did more runs, and what you think running in 3rd gear is doing compared to doing a 4th gear pull. And then take a look at his A/F ratio, what do you guys think about it? How can he lean it out at the top end and smooth it down?

My car with a carburator had a much better A/F ratio and smoother hp and trq. For reference, this is a 1968 Volvo 142, with a 71 b20b motor, dual SU HIF6s that are slightly modified and a full perforated core, mandrel bent, straight through exhaust. I retarded the timing too much because they didn't have decent cooling fans and got less power than i shoulda. If they had decent fans i could've pulled 90 hp probably. And that's decent, don't make fun.

TheSnail · 09-27-2004, 11:23 AM

Ka24de- intake, no cat, catback, plugwires, crankpully, no ac. In other words basically stock. With 190k

Ill post the sheet when my bro get here.

hp=149.4
tq=147.9

Bbandit · 09-27-2004, 01:29 PM

Thats a pretty good number for an stock s13...

Mine made 132rwhp and 132 rwtq when it was stock (just k&n drop in and 170k miles)
Havent dyno it after turbo though

240Driver39 · 09-27-2004, 02:18 PM

heres my bone stock dyno, timing was pretty off (retarded, realized that afterwards)

135k, stock intake and exhaust.

97DubTruck · 09-27-2004, 04:13 PM

that's about right for a stock s13. my friend that has an s13 ka with just exhaust dynoed at 140 hp and 140 torque. it has lower miles than you guys though. but hell for 100k + those are decent numbers.

Red · 09-27-2004, 08:01 PM

My car also had a loss of power the more runs I did...

Once I let it cool off it was back up again...

My stock car was a little less then youre's

I need to stop by Torque Freaks and get a new dyno... Once they get my RPS clutch to me.

***S14DB*** · 09-27-2004, 08:36 PM

Here's a '98 S14 with no MAP sensor.

TheSnail · 09-27-2004, 08:51 PM

Here is the old dyno.

Lets see how it turns out. The rpms were cut off, but if I remember correctly, it dropped off at 6700-6800 rpm and had max power at 5700-5900

TheSnail · 09-27-2004, 08:52 PM

Damn thats small, let me try to fix that.

AutoRnD · 09-28-2004, 10:44 AM

Alrighty here are mine..
Intake And TEST PIPE AND 3 INCH EXHAUST
92 DOHC

KLR142 · 09-30-2004, 09:15 AM

1. What gear were you guys dynoing in?

2. Are there any suggestions on how to smooth out the curves?

3. Any suggestions on leaning out the top end???

I see that 240driver and Zak's A/F readings are basically the same... So it's not just a Zak's car thing... But 240driver's lines are smoother... What are you using for ignition components 240driver?? How many miles? Bone stock? Zak's engine should just be a little better than stock... But your's is 10 higher... And that's with retarded timing? How much were you running? Zak's car is lined up with the very first "notch" on the pulley, is that where his timing should be set(where do we want to advance it to anyway)???

Whaddaya think? Any ideas?

09-27-2004, 08:59 AM	#1
Teb74 Leaky Injector Join Date: Jun 2002 Location: Portland, OR Age: 39 Posts: 108 Trader Rating: (0) Feedback Score: 0 reviews	Dyno'd my stock s13 Just wanted some opinions and anwsers on my pulls from this weekend at Torquefreaks in Portland, A/F metering was also included as a package... My '91 KA is very much stock with 114k miles on it, only "mod" would be a K&N drop in filter, Pulls were done in 3rd gear. I thought peak torque was made at 4400RPM? Does that have anything to do with the pull being in 3rd? My friend's also ran their cars with a much smoother HP/TQ curve, why's mine so shaky? Also my car dropped 7hp by the 3rd run.. Quite a bit for such a short period, cooling problem? Also any insight on my A/F ratio would be great. Looking foward to hearing your replies! Last edited by Teb74; 09-27-2004 at 10:20 AM..

09-27-2004, 10:24 AM	#4
KLR142 Join Date: Apr 2004 Location: Oregon Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	Well, Zak's car actually also has some flowmaster muffler that the P/O put on the car. The piping doesn't seem any different from stock though. We also took out the resonator as well, so it has a bit more intake sound as well... And here's his Dyno sheet. If you wanna see a BIG version of the image, look HERE! So we want to know what you guys think about the car losing power as we did more runs, and what you think running in 3rd gear is doing compared to doing a 4th gear pull. And then take a look at his A/F ratio, what do you guys think about it? How can he lean it out at the top end and smooth it down? My car with a carburator had a much better A/F ratio and smoother hp and trq. For reference, this is a 1968 Volvo 142, with a 71 b20b motor, dual SU HIF6s that are slightly modified and a full perforated core, mandrel bent, straight through exhaust. I retarded the timing too much because they didn't have decent cooling fans and got less power than i shoulda. If they had decent fans i could've pulled 90 hp probably. And that's decent, don't make fun. __________________ Cardomain --- High quality pics, (MANY MORE!)

09-27-2004, 01:29 PM	#6
Bbandit Post Whore! Join Date: Mar 2002 Location: Texas and now Jakarta Age: 43 Posts: 2,674 Trader Rating: (0) Rides Gallery: Bbandit Feedback Score: 0 reviews	Thats a pretty good number for an stock s13... Mine made 132rwhp and 132 rwtq when it was stock (just k&n drop in and 170k miles) Havent dyno it after turbo though __________________ ==>>TGL GARAGE<<==.. RIP! S13 coupe KA-T @ 0.5 Bar = SOLD! A31 Cefiro + SR = Current

09-27-2004, 02:18 PM	#7
240Driver39 Zilvia FREAK! Join Date: May 2002 Location: Charleston, SC Age: 40 Posts: 1,090 Trader Rating: (1) Rides Gallery: 240Driver39 Feedback Score: 1 reviews	heres my bone stock dyno, timing was pretty off (retarded, realized that afterwards) 135k, stock intake and exhaust. __________________ 1990 240sx 5spd fastback

09-27-2004, 08:01 PM	#9
Red Zilvia Addict Join Date: Feb 2002 Location: Vancouver, WA - Portland, OR Age: 44 Posts: 734 Trader Rating: (0) Feedback Score: 0 reviews	My car also had a loss of power the more runs I did... Once I let it cool off it was back up again... My stock car was a little less then youre's I need to stop by Torque Freaks and get a new dyno... Once they get my RPS clutch to me. __________________ http://www.cardomain.com/memberpage/509537 http://www.imagestation.com/album/?id=4287415487 http://www.zilvia.net/f/showthread.php?t=21036

09-27-2004, 10:19 AM	#2
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 44 Posts: 6,525 Trader Rating: (0) Feedback Score: 0 reviews	for reference.. this is my almost stock 240 with intake/exhaust

09-27-2004, 10:23 AM	#3
MakotoS13 BANNED Join Date: Jan 2004 Location: Texas Age: 42 Posts: 4,205 Trader Rating: (0) Feedback Score: 0 reviews	holy inconsistency batman!

09-27-2004, 11:23 AM	#5
TheSnail Nissanaholic! Join Date: Jan 2004 Location: Marietta Georgia Age: 42 Posts: 2,434 Trader Rating: (0) Feedback Score: 0 reviews	Ka24de- intake, no cat, catback, plugwires, crankpully, no ac. In other words basically stock. With 190k Ill post the sheet when my bro get here. hp=149.4 tq=147.9

09-27-2004, 04:13 PM	#8
97DubTruck Zilvia Junkie Join Date: Sep 2003 Location: location, location Posts: 532 Trader Rating: (0) Feedback Score: 0 reviews	that's about right for a stock s13. my friend that has an s13 ka with just exhaust dynoed at 140 hp and 140 torque. it has lower miles than you guys though. but hell for 100k + those are decent numbers.

09-27-2004, 08:36 PM	#10
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	Here's a '98 S14 with no MAP sensor. __________________ Comments should be taken as Opinions not as Statements of Fact

09-27-2004, 08:51 PM	#11
TheSnail Nissanaholic! Join Date: Jan 2004 Location: Marietta Georgia Age: 42 Posts: 2,434 Trader Rating: (0) Feedback Score: 0 reviews	Here is the old dyno. Lets see how it turns out. The rpms were cut off, but if I remember correctly, it dropped off at 6700-6800 rpm and had max power at 5700-5900

09-27-2004, 08:52 PM	#12
TheSnail Nissanaholic! Join Date: Jan 2004 Location: Marietta Georgia Age: 42 Posts: 2,434 Trader Rating: (0) Feedback Score: 0 reviews	Damn thats small, let me try to fix that.

09-30-2004, 09:15 AM	#14
KLR142 Join Date: Apr 2004 Location: Oregon Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	1. What gear were you guys dynoing in? 2. Are there any suggestions on how to smooth out the curves? 3. Any suggestions on leaning out the top end??? I see that 240driver and Zak's A/F readings are basically the same... So it's not just a Zak's car thing... But 240driver's lines are smoother... What are you using for ignition components 240driver?? How many miles? Bone stock? Zak's engine should just be a little better than stock... But your's is 10 higher... And that's with retarded timing? How much were you running? Zak's car is lined up with the very first "notch" on the pulley, is that where his timing should be set(where do we want to advance it to anyway)??? Whaddaya think? Any ideas? __________________ Cardomain --- High quality pics, (MANY MORE!)