Modding N/A SC300 upto ~300hp?
07-29-01, 10:48 AM
#1
Chicago Lexus Club Moderator
Thread Starter
Okay, what do you think? I have a '97 SC300 Automatic. Would this put me in ~300 hp?
Swift Racing intake + ecu
AEM cam gears
Greddy MX exchaust (??)
Unorthodox Pulleys
Unorthodox Flywheel
What are the down sides of doing these mods named above? Could I possibly do something else? Reliability is important to me.
Also, does the SC300 have Supra shocks and springs or would my stock suspetion be better than Supra's stock suspention? I got a friend selling his shocks, sway bar (rear and front), and springs.
I figured I will build up the engine before I get a turbo. I still have 20k miles to go till the warranty expires.
Swift Racing intake + ecu
AEM cam gears
Greddy MX exchaust (??)
Unorthodox Pulleys
Unorthodox Flywheel
What are the down sides of doing these mods named above? Could I possibly do something else? Reliability is important to me.
Also, does the SC300 have Supra shocks and springs or would my stock suspetion be better than Supra's stock suspention? I got a friend selling his shocks, sway bar (rear and front), and springs.
I figured I will build up the engine before I get a turbo. I still have 20k miles to go till the warranty expires.
07-29-01, 06:24 PM
#2
Lexus Test Driver
Remember if you get the cars ECU upgraded, usually the programming adds a couple degrees of advance timing to the engine. If you put a turbo or nitrous on your engine, and the timing has been advanced, you've got a pretty good chance of saying "goodbye" to that engine! 
I think the only way to get true 300hp from the NA motor would be to do major internal mods. There are multiple companies that make stroker kits for this engine, to take it to 3.3 or 3.4litres. They have well balanced cranks and the such, and then you could get everything ported and polished to get more HP.
But remember also that 99% of these mods are going to void your warranty
SR
I think the only way to get true 300hp from the NA motor would be to do major internal mods. There are multiple companies that make stroker kits for this engine, to take it to 3.3 or 3.4litres. They have well balanced cranks and the such, and then you could get everything ported and polished to get more HP.
But remember also that 99% of these mods are going to void your warranty
SR
07-29-01, 08:31 PM
#3
Chicago Lexus Club Moderator
Thread Starter
Originally posted by CmputerWiz
Remember if you get the cars ECU upgraded, usually the programming adds a couple degrees of advance timing to the engine. If you put a turbo or nitrous on your engine, and the timing has been advanced, you've got a pretty good chance of saying "goodbye" to that engine!
I think the only way to get true 300hp from the NA motor would be to do major internal mods. There are multiple companies that make stroker kits for this engine, to take it to 3.3 or 3.4litres. They have well balanced cranks and the such, and then you could get everything ported and polished to get more HP.
But remember also that 99% of these mods are going to void your warranty
SR
Remember if you get the cars ECU upgraded, usually the programming adds a couple degrees of advance timing to the engine. If you put a turbo or nitrous on your engine, and the timing has been advanced, you've got a pretty good chance of saying "goodbye" to that engine!
I think the only way to get true 300hp from the NA motor would be to do major internal mods. There are multiple companies that make stroker kits for this engine, to take it to 3.3 or 3.4litres. They have well balanced cranks and the such, and then you could get everything ported and polished to get more HP.
But remember also that 99% of these mods are going to void your warranty
SR
.
07-30-01, 05:09 AM
#4
Lexus Test Driver
Ya my warranty company said the same thing about mods...that the contract states "Any modification of the vehicle outside of the manufacturers specs."
I was *****ing at the guy on the phone, and he said "we can void your warranty if you put a different brand of brakes on the car or different brand of air filter, so tread lightly." I promptly told him to shove it up his a$$, and I'm headed to the dealer this afternoon to get my money back on the warranty. It only cost me $350 out of pocket for the repairs, so I'm not worried. The $2k I'll get back is WELL worth it! lol
SR
I was *****ing at the guy on the phone, and he said "we can void your warranty if you put a different brand of brakes on the car or different brand of air filter, so tread lightly." I promptly told him to shove it up his a$$, and I'm headed to the dealer this afternoon to get my money back on the warranty.
It only cost me $350 out of pocket for the repairs, so I'm not worried. The $2k I'll get back is WELL worth it! lolSR
07-30-01, 09:58 AM
#5
Driver
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unforntunately ur gonna have to do a littl emaore than just what u mentioned to get 300hp n/a.
that is what i have now. im at about 289hp on a hot day.
i have a complete head job w/ ss valves and dual electric fans, cam gears, ignition, super afc, ect, ect.....
but ull deff need more than what u mentioned. but it is possible, and ull be a much better off when u turbo.
and go w/ a jun flywheel its cheaper and lighter, thats what i have.
Jc
that is what i have now. im at about 289hp on a hot day.
i have a complete head job w/ ss valves and dual electric fans, cam gears, ignition, super afc, ect, ect.....
but ull deff need more than what u mentioned. but it is possible, and ull be a much better off when u turbo.
and go w/ a jun flywheel its cheaper and lighter, thats what i have.
Jc
07-31-01, 09:26 AM
#7
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flywheel on an automatic?
I've heard of lightened flywheels on manuals, but auto? For the manual, there are pros and cons. The revs up are quite a bit faster, but then again so are the revs down. If you go too light on the flywheel, you might have issues with engaging the clutch as you normally would from a stop and even make driveability suffer.
Last edited by mdfdsc300; 07-31-01 at 09:29 AM.
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