Fix it , or rebuild it??? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

STL240SX · 12-03-2001, 05:27 PM

i dont really want to deal with the hassle of trying to drop the SR into my car because i dont think i could get it to pass the stupid emmisions testing, so i guess i just goingto stick with my KA for now. Anyway, i know im going to have to fix my timing chain soon (its getting increasingly annoying). so yo guys think i should just fix that, and a few other things, fuel injectors, etc... or just keep saving and do a full rebuild??  What do you guys think??

mistert · 12-03-2001, 05:34 PM

hmm...you could get new injectors, but it'd be cheaper to just have yours rebuilt and blueprinted. im not sure how much a crank balancing costs...it shouldnt cost much at all to do a .030 bore of the cylinder walls though. i dunno...i'd just save up my money for a swap. you shouldnt have problems with emissions...

gwong · 12-03-2001, 05:36 PM

Hey are you in St. Louis?  What year's your car?

STL240SX · 12-03-2001, 05:38 PM

yep, im in STL i have an 89 hatchback.

STL240SX · 12-03-2001, 05:40 PM

yep, im in STL i have an 89 hatchback.

gwong · 12-03-2001, 05:44 PM

Hey I have a turbocharged 95 S14 with a rebuilt KA24DE.  Let me know if I can be of help.

STL240SX · 12-03-2001, 05:49 PM

well what do you think, just fix the timing chain, and get some bigger injectors, and all that, or save a little more, and just rebuild the whole thing??

mistert · 12-03-2001, 06:37 PM

ouch...the elusive triple post

*transient* · 12-03-2001, 07:35 PM

Hmm, haven't seen that before, I'll take care of it.

btw, I'd go for a rebuild. It's in my future, as well as higher compression pistons. Personally I don't want to overbore because the piston walls are a bit thin.

whateverjames · 12-03-2001, 08:13 PM

i'd get 10.5:1 compression piston heads, and have everything else checked out, and a cam from pdm-racing.com.

mistert · 12-03-2001, 08:21 PM

a .030 bore wouldnt prevent you from using stock pistons at all, and wouldnt compromise your cylinder wall integrity. it'd just be to clean the cylinder walls and get rid of any nastiness in the compression chamber that could mess with airflow and such...it would afford a couple extra lb/ft of torque, probably, but thats not eh whole point of it. i dunno if i was staying na, though, i would get some overbored pistons and that little bore out, like a .25mm. i dont think the static pressure ratio would be able to blow your engine at these levels, unless you planned on running n2o part of the time.

jay · 12-03-2001, 08:25 PM

I am in the same position, when I go back home for christmas I will be changing my  timing belt as well. But I plan to go turbo in the future so increasing my compression wouldn't be too bright but I am, however, going to get a port and polish job. Plus I get my CAI and N1 dual put on!! YES!

mistert · 12-03-2001, 08:27 PM

dont forget silencers...we're better than hondas <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=';)'>

jay · 12-03-2001, 08:30 PM

Are they really that loud? I have video of them idleing and revving and they didn't sound that loud. They for sure do not sound like the farty mufflers on most hondas.

mistert · 12-03-2001, 08:36 PM

its not as much as a bad sound, its just too loud. silencers are supposed to give you a little of that backpressure back, too. whether or not this will make any power difference i have never seen. if you go with an SR swap though, you know you dont have to worry about getting a new exhaust, since you already ahve a turbo-ready one.

jay · 12-03-2001, 08:38 PM

Yeah, that is definately one reason why I am buying the N1 dual. I would hate to have to buy all new stuff when I do a swap or turbo. That would be hella weak.

12-03-2001, 05:27 PM	#1
STL240SX Zilvia Member Join Date: Jul 2001 Location: saint louis Posts: 199 Trader Rating: (0) Feedback Score: 0 reviews	i dont really want to deal with the hassle of trying to drop the SR into my car because i dont think i could get it to pass the stupid emmisions testing, so i guess i just goingto stick with my KA for now. Anyway, i know im going to have to fix my timing chain soon (its getting increasingly annoying). so yo guys think i should just fix that, and a few other things, fuel injectors, etc... or just keep saving and do a full rebuild??  What do you guys think??

12-03-2001, 05:34 PM	#2
mistert Pearl White Mike Join Date: Oct 2001 Location: memphis TN Posts: 908 Trader Rating: (0) Feedback Score: 0 reviews	hmm...you could get new injectors, but it'd be cheaper to just have yours rebuilt and blueprinted. im not sure how much a crank balancing costs...it shouldnt cost much at all to do a .030 bore of the cylinder walls though. i dunno...i'd just save up my money for a swap. you shouldnt have problems with emissions...

12-03-2001, 05:36 PM	#3
gwong Leaky Injector Join Date: Dec 2001 Location: st. louis Posts: 70 Trader Rating: (1) Feedback Score: 1 reviews	Hey are you in St. Louis?  What year's your car?

12-03-2001, 05:38 PM	#4
STL240SX Zilvia Member Join Date: Jul 2001 Location: saint louis Posts: 199 Trader Rating: (0) Feedback Score: 0 reviews	yep, im in STL i have an 89 hatchback.

12-03-2001, 05:40 PM	#5
STL240SX Zilvia Member Join Date: Jul 2001 Location: saint louis Posts: 199 Trader Rating: (0) Feedback Score: 0 reviews	yep, im in STL i have an 89 hatchback.

12-03-2001, 05:44 PM	#6
gwong Leaky Injector Join Date: Dec 2001 Location: st. louis Posts: 70 Trader Rating: (1) Feedback Score: 1 reviews	Hey I have a turbocharged 95 S14 with a rebuilt KA24DE.  Let me know if I can be of help.

12-03-2001, 05:49 PM	#7
STL240SX Zilvia Member Join Date: Jul 2001 Location: saint louis Posts: 199 Trader Rating: (0) Feedback Score: 0 reviews	well what do you think, just fix the timing chain, and get some bigger injectors, and all that, or save a little more, and just rebuild the whole thing??

12-03-2001, 06:37 PM	#8
mistert Pearl White Mike Join Date: Oct 2001 Location: memphis TN Posts: 908 Trader Rating: (0) Feedback Score: 0 reviews	ouch...the elusive triple post

12-03-2001, 07:35 PM	#9
transient Premium Member Join Date: Jun 2001 Location: Los Angeles, California Age: 41 Posts: 2,947 Trader Rating: (0) Feedback Score: 0 reviews	Hmm, haven't seen that before, I'll take care of it. btw, I'd go for a rebuild. It's in my future, as well as higher compression pistons. Personally I don't want to overbore because the piston walls are a bit thin.

12-03-2001, 08:13 PM	#10
whateverjames Nissanaholic! Join Date: Jul 2001 Location: St. Louis Age: 45 Posts: 2,263 Trader Rating: (0) Feedback Score: 0 reviews	i'd get 10.5:1 compression piston heads, and have everything else checked out, and a cam from pdm-racing.com.

12-03-2001, 08:21 PM	#11
mistert Pearl White Mike Join Date: Oct 2001 Location: memphis TN Posts: 908 Trader Rating: (0) Feedback Score: 0 reviews	a .030 bore wouldnt prevent you from using stock pistons at all, and wouldnt compromise your cylinder wall integrity. it'd just be to clean the cylinder walls and get rid of any nastiness in the compression chamber that could mess with airflow and such...it would afford a couple extra lb/ft of torque, probably, but thats not eh whole point of it. i dunno if i was staying na, though, i would get some overbored pistons and that little bore out, like a .25mm. i dont think the static pressure ratio would be able to blow your engine at these levels, unless you planned on running n2o part of the time.

12-03-2001, 08:25 PM	#12
jay Zilvia Member Join Date: Nov 2001 Posts: 205 Trader Rating: (0) Feedback Score: 0 reviews	I am in the same position, when I go back home for christmas I will be changing my  timing belt as well. But I plan to go turbo in the future so increasing my compression wouldn't be too bright but I am, however, going to get a port and polish job. Plus I get my CAI and N1 dual put on!! YES!

12-03-2001, 08:27 PM	#13
mistert Pearl White Mike Join Date: Oct 2001 Location: memphis TN Posts: 908 Trader Rating: (0) Feedback Score: 0 reviews	dont forget silencers...we're better than hondas <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=';)'>

12-03-2001, 08:30 PM	#14
jay Zilvia Member Join Date: Nov 2001 Posts: 205 Trader Rating: (0) Feedback Score: 0 reviews	Are they really that loud? I have video of them idleing and revving and they didn't sound that loud. They for sure do not sound like the farty mufflers on most hondas.

12-03-2001, 08:36 PM	#15
mistert Pearl White Mike Join Date: Oct 2001 Location: memphis TN Posts: 908 Trader Rating: (0) Feedback Score: 0 reviews	its not as much as a bad sound, its just too loud. silencers are supposed to give you a little of that backpressure back, too. whether or not this will make any power difference i have never seen. if you go with an SR swap though, you know you dont have to worry about getting a new exhaust, since you already ahve a turbo-ready one.

12-03-2001, 08:38 PM	#16
jay Zilvia Member Join Date: Nov 2001 Posts: 205 Trader Rating: (0) Feedback Score: 0 reviews	Yeah, that is definately one reason why I am buying the N1 dual. I would hate to have to buy all new stuff when I do a swap or turbo. That would be hella weak.