check this out is it any good? engine management http://cgi.ebay.com/ebaymotors/DIYPN...=p4506.c0.m245

 

that's a full standalone ECU that you literally have to build yourself. if you have no experience tuning a standalone and/or soldering tiny connectors then this is NOT for you. it is by no means plug and play for the LS.

 

I promise you that you do not want to dial in camber to cure a clearance issue!
Colin

 

So other than coilovers and stb's, is there anything suspention wise for the first gen LS? To me suspention and handeling is #1, brakes is #2, HP is #3. I prefer to have the right suspention and brakes to help me get out of a sticky situation than to have the HP to put me in one.

 

*suspension.

coilovers, sticky tires (18" for the 1LS), sway bar bushings, addco rear sway, roll center/SS kit to fix the bumpsteer for when you lower it, and gut the hell out of it, because the 1st gen weighs ~300-500lbs more than the 2nd gen.

 

Ya ya ya.. I know I can't spell.

Damn, that's just another reason I wish I had a 2nd gen LS. Oh well, one day ill have 2 or 3 LEX's.

 

Is UCF10 really that much heavier than UCF20?

ls400data.com shows '90 being 3,759 lb and '94 being 3,859 lb (driver side airbag, bigger brakes and wheels -- makes sense). Also shows '95/'96 as 3,650 lb and '99 3,890 lb. Looks like the '95/'96 are the lightest LSs, but others are equally piggy, it isn't quite a 300-500lb difference.

Looks like the final drive ratio went from 3.62:1 on '90-'97 models to 3.27:1 on '98+. If the '98 diff can be bolted up to earlier cars, that would be a fairly easy way to make them faster IMO.

http://www.ls400data.com/specs.php?year=1990

Stan

 

Now that would be a nice and cheap improvement. It would prob improve the gas milage.

 

I read this thread and it got me thinking. If the front supra coil's are a direct bolt up and the rear just needs the lower perch welded on would coils for the first gen sc work with similar modification????
The supra is about 1000lbs lighter than the LS so I'm not too keen on using them, however the sc is very close in weight and there are nice coils available.

 

It'd probably make it noticeably slower off the line though. Still, I'd be interested in seeing if anyone's ever tried something like that. It'd be cool if it was an LSD, too.

I love my '94, but it sure isn't a powerhouse. I feel a 5-speed manual transmission would wake it up somewhat, but it would be quite an undertaking (easier just to sell the car and buy a 6-speed 540i)

Stan

 

what good is having "nice coils" if the valving is totally off ?

 

With a similar weighted car with similar travel and similar wheels I don't see how the valving would be off at all. The weight difference between SC and LS is like ~200lbs or a passenger. I certainly didn't see the op of that thread complaining about the ride on coils rated for ~1000lbs less...
Anyway it's an idea and forgive me if I'd trust slightly modded tein's or similar over some Meagan's or BC's. I would think this sort of thinking would add to the knowledge base around here.
So do you have an answer for my question? or are you just trolling?

 

the 1st gen LS and 1st gen SC have a weight difference of over 300lbs ('94 LS4 vs. SC3 auto) which is significant. also the proportion of that weight over the front vs. the rear wheels is quite different, which is also significant. the SC chassis has a difference of no more than ~110lbs between engine/trans combinations hence the lack of needing engine-specific coilover valving.

I actually had several conversations via PM with the member in question, years ago when he was still active. He wasn't going for ride comfort at all, nor did he ever track the car. when he did it there was simply no alternative as coiloers for the LS were simply not available both in his country, and in general at that time. (iirc the only option was tein for 2nd gen cars, and jdm market only specials for the LS). He did it out of necessity because it was better than running stock suspension in his case. If the Megans or BC-R or ANY of the other companies were making coils back then I can guarantee you he would have picked up a set and save himself the work.

 

Lexus lists the '90 at 3,759lbs, the '94 at 3,859lbs, and the '96 at 3,650lbs.

you have the gearing down backwards. higher number=lower gear=better accel but lower highway mpg. lower number=higher gear=better highway mpg but lower accel. switching '98-00 cars to a '95-97 ring and pinion would result in faster acceleration.

 

That's interesting because everything I can find puts the 1sc4 at 3575lbs with 54.5% front weight dist, the 90 LS that I have is 3748 with a front dist of 52.80% which makes it less than 200lbs different and very close in weight dist. If 100 lbs was too much for a set of coils to handle every coil riding car would turn to crap with a driver..... Nevermind a passenger or 2 ~300lbs.... Maybe some budget china coils can't handle it(lol) but real coils can.
Some ppl put more weight into a car with a system and some rediculous rims and the cheapies seem to be holding up even they weren't valved for the extra sub weight.