Advanced Forced Induction & N/A Engine Tuning This forum is brought to you by Racing Greed in Port Coquitlam.
Supercharger vs Turbocharger vs NA? Hondata vs Megasquirt? 94oct vs 87oct? Through technical discussion, let's find out what will the best option for you...
 |
 | 
12-27-2008, 01:16 PM
|
#1 | | Wunder? Wonder?? Wander???
Join Date: Nov 2005 Location: B.C.
Posts: 216
Thanked 0 Times in 0 Posts
| KA-T falling flat on its face
first off the car.. 90 240sx running a sohc ka turbo.. Car is falling on its face right b4 it hits boost.. in every gear. if i watch my safc around 21% throttle it cuts out and when i say cuts out i mean there is nothign until i let off the throttle. Its getting extremly hard to drive. Checked all plug leads and everything is in tack no cracks or anything.. plugs rotor cap all done in october. Also i have started to notice sometime if i drive over some snow on the road and the engine bay takes on snow my lights dim and the altanator belt seems like it is squilig. checked it out and it seems to b a tad bit loose im going to tighten this up.. but i doubt that has anything to do with the car not being able to drive.. Please any help would b great thanks guys
__________________
KA-t 13psi daily
S10 v8 project
| 
|  | |
12-27-2008, 04:45 PM
|
#2 | | What hasn't Killed me, has made me more tolerant of RS!
Join Date: Oct 2007 Location: Comox valley
Posts: 187
Thanked 9 Times in 4 Posts
|
Im very confident that your problem is intercooler related, check all your pipes and connections cause a loss of pressure there will equal no boost. Happend to me a little while ago and i couldn't get the car over 3000rpm, it would just bog right down.
Last edited by acidpaint; 12-27-2008 at 04:47 PM.
| |
| | |
12-27-2008, 05:27 PM
|
#3 | | Wunder? Wonder?? Wander???
Join Date: Nov 2005 Location: B.C.
Posts: 216
Thanked 0 Times in 0 Posts
| Quote:
Originally Posted by acidpaint  Im very confident that your problem is intercooler related, check all your pipes and connections cause a loss of pressure there will equal no boost. Happend to me a little while ago and i couldn't get the car over 3000rpm, it would just bog right down. | really... hmm something i would have never looked at! there has been alot of snow jamming in there latly and build up in my engine around all my pipes.. i will look first think in the morning just waiting on some light.. thanks man
__________________
KA-t 13psi daily
S10 v8 project
| |
| | |
12-30-2008, 06:14 PM
|
#4 | | Wunder? Wonder?? Wander???
Join Date: Nov 2005 Location: B.C.
Posts: 216
Thanked 0 Times in 0 Posts
|
OK so i snugged down everything made sure there was no leaks and im still having problems with the car,.. car still sputters a bit and boggs down the odd time.. i think there is more of a problem then just boost.
__________________
KA-t 13psi daily
S10 v8 project
| |
| | |
12-30-2008, 06:21 PM
|
#5 | | What hasn't Killed me, has made me more tolerant of RS!
Join Date: Oct 2007 Location: Comox valley
Posts: 187
Thanked 9 Times in 4 Posts
|
take it to your local shop and have them look at it.
| |
| | |
12-30-2008, 07:28 PM
|
#6 | | Proud to be called a RS Regular!
Join Date: Jul 2001
Posts: 135
Thanked 27 Times in 6 Posts
|
Have you actually removed the plugs and inspected them? Do you have a wideband? What is your alternator putting out?
| |
| | |
12-30-2008, 09:55 PM
|
#7 | | RS.net, where our google ads make absolutely no sense!
Join Date: Nov 2001 Location: Tokyo/Vancouver
Posts: 974
Thanked 119 Times in 56 Posts
|
is your blow off valve leaking?
| |
| | |
12-31-2008, 06:32 AM
|
#8 | | Wunder? Wonder?? Wander???
Join Date: Nov 2005 Location: B.C.
Posts: 216
Thanked 0 Times in 0 Posts
| Quote:
Originally Posted by luke Have you actually removed the plugs and inspected them? Do you have a wideband? What is your alternator putting out? | yes i have checked my plugs the first 3 are normal. and the 4th is a bit black so changed the lead.. i have a aem wideband gauge .. not sure what the alternator is putting out
__________________
KA-t 13psi daily
S10 v8 project
| |
| | |
12-31-2008, 06:33 AM
|
#9 | | Wunder? Wonder?? Wander???
Join Date: Nov 2005 Location: B.C.
Posts: 216
Thanked 0 Times in 0 Posts
| Quote:
Originally Posted by ncrx is your blow off valve leaking? | how would you check to see if its leaking?
__________________
KA-t 13psi daily
S10 v8 project
| |
| | |
12-31-2008, 03:34 PM
|
#10 | | NEWBIE ACCOUNT!
Join Date: Dec 2008 Location: Edmonton
Posts: 10
Thanked 0 Times in 0 Posts
|
Check the MAF.
| |
| | |
12-31-2008, 07:03 PM
|
#11 | | RS.net, where our google ads make absolutely no sense!
Join Date: Nov 2001 Location: Tokyo/Vancouver
Posts: 974
Thanked 119 Times in 56 Posts
| Quote:
Originally Posted by ChronicalCP how would you check to see if its leaking? | I'd remove the bov and plug it temporarily. Else, if its adjustable, crank it down to full stiff.
| |
| | |
12-31-2008, 10:39 PM
|
#12 | | RS.net, helping ugly ppl have sex since 2001
Join Date: Mar 2004 Location: Richmond
Posts: 8,645
Thanked 1,357 Times in 508 Posts
|
if it's MAF it's most likely a loose coupler.
what does the A/F say when it bogs? lean or rich?
__________________ ⇐ If I bothered replying, that's the face I made while I typed.
- 2017 Alfa Romeo Giula Q4
- 1999 Nissan Stagea 260RS 1 of 748
- 1998 Nissan Laurel Medallion Club S drift boi
- 1991 Lexus LS400 mint boi
- 1989 Nissan S-Cargo cute boi
| |
| | |
01-18-2009, 07:23 PM
|
#13 | | Banned (ABWS)
Join Date: Jul 2006 Location: vancouver
Posts: 117
Thanked 1 Time in 1 Post
|
how did you set up your SAFC ?
| |
| | |
02-05-2009, 12:26 AM
|
#14 | | Ready to be Man handled by RS!
Join Date: Dec 2003 Location: richmond,BC
Posts: 96
Thanked 3 Times in 1 Post
|
go to ka-t.org they got a lot of trouble shooting stuff for you great place to figure out ur problems with the single slammer
| |
| | |
03-15-2009, 12:16 PM
|
#15 | | Everyone wants a piece of R S...
Join Date: Mar 2006 Location: Vancouver
Posts: 373
Thanked 5 Times in 5 Posts
|
What are your A/F Ratios? Have you had it tuned? If you havent, there is a good chance you could be running either rich/lean.
What injectors are you running? Ive seen people throw in injectors way to big, trying to run them without touching base fuel pressure, or without touching injector pulse/lag.
Could very well be MAF related. Where is your MAF in relation to the turbo? Pre turbo or post turbo? Perhaps your maf was about to pack it in prior to the KA-T, and after some vibrations etc, its semi-dead. When your cars idling, just hit the maf, dont clock the thing, but hit it decently. See if the car does anything funny.
__________________
ride/drive best of both worlds.
| |
| | |
07-19-2009, 09:31 AM
|
#16 | | NOOB, Not Quite a Regular!
Join Date: Jul 2009 Location: B.C
Posts: 34
Thanked 0 Times in 0 Posts
|
i would check :
MAF ( is it stock or 300zx TT )
plugs
IC piping
AFR's as to much fuel can make this happen.
02 sensor.
injectors.
| |
| | |
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off
| | |
All times are GMT -8. The time now is 09:41 AM.
|
You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
The banners on the left side and below do not show for registered users!
