Getting owned by Z24 Cavaliers and SIR2 Civics...is this normal?

[Max_444]

I own a manuel 93 240sx hatch with a KA24DE but soon to be SR20 and I have a few mods on the KA like a AEM Short ram Intake, Engine Damper and an exhaust.. the motor has over 100000 miles and I recently brought it up to the mecanic for a tune up..change to synthetic oil..iridium spark plugs and all that crap and since then my car has been running like crap and I used to hit the speed limiter in no time even with my 18 inch rims on..now I have a hard time going over 100mph. So can anybody tell me what could be wrong with my motor..cuz Im getting owned by Cavaliers and Hondas with only intakes on them and It starting to get embarasing cuz I used to race them 2 weeks ago...

[noypi240]

hate to say it, but yup! it is possible, it could be ur gap on ur sparkplug, i got right about the same car but 2.5x the milage and still running good. just keep up the maint. as well as some additives. for now.

[Bigvinnie]

If you are getting an SR soon you might as well get ready to prep the engine management with an SAFC...Now with the use of an SAFC you can tune a little richer to advance your timing that should pick up some acceleration for you.93 240sx KA24de's are the slowest KA BTW, Besides HICAS 240 KA's...

[S3t0_S13]

93 240sx KA24de's are the slowest KA BTW, Besides HICAS 240 KA's...

hows that?

check ur plug gap, i forgot the exact number its supposed 2 be @

[PacMan86]

Those cars had more hp stock anyways. Hate to be the bearer of bad news.

[Bigvinnie]

hows that?

check ur plug gap, i forgot the exact number its supposed 2 be @

It uses weaker cams than the 91-92 engines. It yields the same compression as the 91-92 engines.(9.2:1)...95-98 engines yield a (9.5:1)

This means response and acceleration on a 93 are terribly slow.91-92 accelerate well with scv's and the lower compression, while the 95-98 accelerate well from the higher compression and advanced timing.This means 93's lack a horribly tuned ecu compared to 95-98 models.

[9240sx]

It uses weaker cams than the 91-92 engines. It yields the same compression as the 91-92 engines.(9.2:1)...95-98 engines yield a (9.5:1)

This means response and acceleration on a 93 are terribly slow.91-92 accelerate well with scv's and the lower compression, while the 95-98 accelerate well from the higher compression and advanced timing.This means 93's lack a horribly tuned ecu compared to 95-98 models.

Where did you get all your info at?? All s13 ka24de cams are the same..91-94 THE SAME! All ka24de's have the same compression to..9:5:1

Correct sparkplug gap for the ka is 0.43

[Bigvinnie]

Where did you get all your info at?? All s13 ka24de cams are the same..91-94 THE SAME! All ka24de's have the same compression to..9:5:1

Correct sparkplug gap for the ka is 0.43

Mind proving that one then jack a$$. Production of the KA S13 was limited in 93 so it's a 93 production engine first of all there were no 94's you can check all productions on the chassis if you would like too...LOL.Secondly there not all 9.5:1 if you like to be such a smart a$$ you can see that there are different head numbers for 91-93 as apposed to 95-98 head types. The quench areas are slightly changed, and pistons went unchanged.Now only 91 and 92 KA24de's use SCV's this means it has a harder and longer more aggressive duration than the 93 production KA24de's. The cams are not at all the same. LOL

I'm not the only one with this information obviously here is a thread I found that has very similar information to Compression Ratio...nissan forums.com/general-240sx-silvia-s12-200sx-discussion/92630-ka-turbo-thread.html

Just add the www and put nissan forums as one word to the link if you want to view the link..

You should stick to your SR20det's and stay out of KA non sense you will only get butt hurt...LOL

You also don't know jack about plugs, even if it was a .43 GAP OBD1 KA's use as low as copper plugs, while the OBD2 were recommended to use platinum plugs... Big difference in temperatures when you want to star talking about GAPPING.

I wouldn't follow the entire FSM if I were you....OHH thats right I almost forgot they don't list cam specs for the 93 KA engine in the FSM... FU4KIN douche...
Modified by Bigvinnie at 9:22 PM 6/19/2007

[neverlift]

Mind proving that one then jack a$$. Production of the KA S13 was limited in 93 so it's a 93 production engine first of all there were no 94's you can check all productions on the chassis if you would like too...LOL.Secondly there not all 9.5:1 if you like to be such a smart a$$ you can see that there are different head numbers for 91-93 as apposed to 95-98 head types. The quench areas are slightly changed, and pistons went unchanged.Now only 91 and 92 KA24de's use SCV's this means it has a harder and longer more aggressive duration than the 93 production KA24de's. The cams are not at all the same. LOL

I'm not the only one with this information obviously here is a thread I found that has very similar information to Compression Ratio...nissan forums.com/general-240sx-silvia-s12-200sx-discussion/92630-ka-turbo-thread.html

Just add the www and put nissan forums as one word to the link if you want to view the link..

You should stick to your SR20det's and stay out of KA non sense you will only get butt hurt...LOL

You also don't know jack about plugs, even if it was a .43 GAP OBD1 KA's use as low as copper plugs, while the OBD2 were recommended to use platinum plugs... Big difference in temperatures when you want to star talking about GAPPING.

I wouldn't follow the entire FSM if I were you....OHH thats right I almost forgot they don't list cam specs for the 93 KA engine in the FSM... FU4KIN douche...

Modified by Bigvinnie at 9:22 PM 6/19/2007

I even know comps are different from almost every model within the model example:s13(sohc) 89 9.1:1 while 90 had 8.6:1s13(dohc) 91 ~ 93 had 9.2:1 as vinn said great cams shyt roms13(vert) IDK and / or cares14(dohc) 9.5:1 shyt cams awesome rom

a ton of slight changes were made to the ka throughout its production, went from 6 cam caps to 5 late in the game(s14's) and went from dual chain to single chain(again s14), ecu tune got way better,much more aggressive even on the 9.2:1 engines it would have livened up things more without the bump in compression....

I'm done

[dickie]

240sx's can tell when you are street racing and refuse to let you win. you have to get an ecu mod chip for that, but you can get those out of old computers and solder them to your ecu pretty easily.

you should also get some bigger wheels, at least twice the diameter of whatever your opponent has because then you can go the same speed from half the turns. that means you can go twice as fast as before. 18's are old news, you need to have 24's to win on the street. spinners act like fans and cool your brakes too, i suggest you get some.

If you really want to beat a cavalier, invite him to the touge and bust some phat drifts in his face, i guarantee he will never show his ricer face around another 240sx again.

but dude if you are still having problems sell your 240sx and get a neon srt4, i hear those are the fastest best street racing cars you can get.

if that doesnt work, just tell him to get out of his car and beat him up, then pull down his pants to make sure you have a bigger pen15. this seems to be a much easier method than street racing.

[Bigvinnie]

Don't you think it's weird that a FSM is issued for 1991-1994 models, and then 1995, 1996,1997, and 1998 have there own years????? I might as well bought a chiltons if thats the case.. The original FSM is so old and out dated for 94 and below years that it is a reprint of mis informed and misguided information, it is not meant to be taken literally like a bible. Even production stop i 93 Nissan didn't have a 94 FSM EVER. The whole assembly line was changed in 93 to start production of S14's thats why some 95 S14's are still OBD 1.Don't trust the FSM!!! Lots of good information for steps and procedures but the information on engine specs are wrong!!!!!

[neverlift]

damn d!ck your late sleeping on the job again I see.

[180weaver]

Bigvinnie, do you have any more news on the production of the fully counterweighted cranks for the de engine? I have the sohc model and wasn't sure if they are so different that one couldn't be made for about the same price as the de? Also where would I find a fsm (is that factory service manual?) for the 90 240sx. I have upgraded all of the other internals and would really like to get a hold of a fully counterweighted crank to add a nice finish to the rebuild.

[180weaver]

do you have any more news on the production of the fully counterweighted cranks for the de engine, I have the sohc model and wasn't sure if they are so different that one couldn't be made for about the same price as the de? Also where would I find a fsm (is that factory service manual?) for the 90 240sx. I have upgraded all of the other internals and would really like to get a hold of a fully counterweighted crank to add a nice finish to the rebuild.