RLis300

that will almost definitely rub due to 20's being wayyy too big but who knows. and with that much of low profile you could run into MANY flats

They are not "wayyy too big" and you will not have "MANY flats" . As wit any wheel and tire on a tuner...dont go diving into potholes. I have 20's on mine with NO problems. check out my post

http://us.lexusownersclub.com/forums/index...showtopic=27766

actually the Toyota belt is better.

ok. The HKS and Greddy belts are high!

So I'll just set the timing on a day off and go from there.

Honda VTEC

The original VTEC was a big step. Back in the dark ages, you had to sacrifice low RPM torque and drivability for high RPM power. Bigger cams mean more valve lift, and more valve overlap, but automakers couldn't do this, because the car would run really rough at low RPMS, and gas mileage would be horrible.

Honda came up with the idea to add more lobes to the camshaft. The idea was to have the regular cam lobes for lower RPMS, but once you reached a certain RPM, the engine would switch to the other set of lobes on the cam, which were bigger and provided more lift, which keeps the valves open longer and open deeper into the cylinder. This allows for more air & fuel into the combustion chamber, thus making more power. Honda has 2 and even 3 stage VTEC systems. One thing to note, is that the original VTEC system, is not a variable valve timing system. It is a variable LIFT system.

SOHC vs. DOHC VTEC

SOHC VTEC = Applies the lobe changes to just the intake valves.

DOHC VTEC = Applies the lobe changes to both the intake and the exhaust valves. The S2000 is a DOHC VTEC engine. I believe it is only a 2 stage and makes an impressive 120 HP per liter. (The original S2000 had a 2.0 liter engine and still made 240HP)

i-VTEC

i-VTEC was introduced to improve on the original VTEC system. It adds variable valve timing to the VTEC system. Now Honda not only has variable lift control, but also can adjust the timing of when the valves are opened. The addition of the VVT system to i-VTEC also smoothes the transition between lobes. It is also intelligent and can change valve timing depending on load, RPM and other environmental variables.

Toyotas VVT-I system is a much simpler technology than VTEC. There is no lift control with VVT-i. All VVT-i does is change the timing on when the intake valves are opened. The "i" in VVT-i stands for "Intelligent." The system is intelligent because it varies the valves timing depending on load, engine temp, rpm, etc. By varying the valve timing, low end torque and high RPM horsepower are achieved. The intake valves are continuously variable throughout the RPM range. Meaning the VVT-i system can !Removed! or advance intake valve openings throughout the whole RPM range. Even though VVT-i doesn't have quite the same performance benefits as VTEC or i-VTEC, it is a cheaper system and has a much smoother power band than VTEC.

The lines in the cam gears go straight up, the dots you see to will be slightly off the the right (let's say 2:00 position)

The crank balancer will have 2 grooves. Mine has a yellow line painted in the 1st groove and white paint in the 2nd.

The 2nd groove on the crank(white paint) will be TDC

You can confirm this for yourself by taking out the #1 spark plug and checking with a clean poker of some kind that the piston is at the top of its travel. So long as your close, the Vvt will pull it in a adjust accordingly. I actually think you have another issue that is effecting the Vvti's ability to adjust.

As for ignition timing, I have a base map I can show you, but your on the stock ECU, which OEM timing maps are based on IAT, coolant temp, knock, ect. The car has variuos timing curves that control ignition timing from the base timing curve.

Well when I get some extra time I will get a new timing belt and reset the timing. I want to get a HKS timing belt but I'll just get one from Toyota.

So, maybe the timing is off, and the Vvt controller isn't adjusting.

Ok...so next question. How do I set the timing on this car....I'm used to Honda's so this is new to me bro.

Hmm, it's hard to diagnose over the site like this. You may be stuck in the fail safe mode and your timing would be fixed at 5 degrees. Ignition timing advance for cylinder #1 should be -64 dgrees, max -63.5. Idling BTDC 6-16 degrees. A cel will come up if there is a difference of more than 5 degrees than target. Also, the Vvt system uses the oil controller valve and the Vvt system controller that all run on the same duty cycle. So you may want to look at the oil control valve as that regulates the oil pressure sent to the Vvt controller.

It would help to know what the dtc codes you were getting are specifically. Maybe have your friend at the import tuner shop do a freeze frame data read to see what's really going on.

Are you misfiring? How does the car run?

I'll get the code from Autozone tonight because he is closed on weekends.

It runs ok. When I first start the car and drive...if I get on the gas it wont shift out correctly but if I do it like mid throttle or low it will. at a 30mph roll or so...if I punch it, its hesitates...

I took my car to AutoZone (Its cheap) to check out a CEL. It said I had a timing issue and to replace the camshaft sensor was probably bad. I'm a Turbo Honda Builder so this is my first Toyota..:)

Anywho...I replaced the sensor which was hell but I found out how to do it..haha. Reset the engine light and everything. Drove the car and it came back on I had it checked again and at my friends import shop in town. SAME THING AGAIN. So my thing its what's wrong? Maybe timing? If so How do I set it....like a "how to" also I heard there's a crankshaft sesnor as well. What do you think....

Smooth feel free to hand over some knowledge please. lol B)

I have 20's on my IS300 now. LOL. All these dudes on here talk to much about what they dont know, I see.

20x7.5 Chrome Wheels

35 offset

225/30/20 tires

No rubs, can turn the full radius

Still burn rubber...NO COMPLAINTS.....ONLY COMPLIMENTS.

I'm still going to get some 18's for racing.

im Looking at getting 20's for my 01 is300 and it looks great on your car. just wanna make sure before i drop 2 grand on them that they dont rub ? and was there anything that had to be done for it not to rub?????

I have not done any mods to the suspension and all interior is still in car. I just purchased the wheels and tires and put them on straight out the box. I only had the car for a month at the time

I have 20's on my IS300 now. LOL. All these dudes on here talk to much about what they dont know, I see.

20x7.5 Chrome Wheels

35 offset

225/30/20 tires

No rubs, can turn the full radius

Still burn rubber...NO COMPLAINTS.....ONLY COMPLIMENTS.

I'm still going to get some 18's for racing.

that would just be silly.... it's not too low... in fact it's perfect to where you can watch a movie while your driving and no one driving by unless they are in a huge jacked up truck can see it..... and you don't need to be looking at it anyways while your driving... but it's a great location to me....

I agree. I thought the same but its an ok location. ONce you look at it a couple of times its golden. When chicks ride on the side they love it. :) BROWNIE POINTS. LOL

i just purchased an alpine unit to play my xm radio and i-pod. ijust need the wirring hardness for my is 300. i was told that i needed a harness#71-8113. where or how to locate one. i tried on ebay no luck, does any one know?

I have a kit and harness for the is300. I bought it from a guy on eBay but he took forever to send it. I ended up finding a kit around town and after looking under my dash i found out that the previous owner had already bypassed my amp and it had a remote start/keyless entry system so I didnt need a harness. So now I have the harness and kit if you're interested still in the box.

i just have had my 2001 IS300 for about 2 months now and i have put tint on it and i have also but rims on it as well and a a sound system: TV's in head rest with tv tuner and ps2, aftermarket head unit, and a 12inch solo baric in the trunk with a custom box and it is powered by a hifonics Brutis 1200 watt RMS class D mono block but i cant think of what else to do to my car and suggestion?

I suggest an alarm! lol

PLz dont put 20s on an IS that looks horrible on them ive seen one but cant find it anymore HORRIBLE lol

I found this on on the net....its NOT mine.

20x8 (42offset)

Motegi DP-1 Black w/polished lip

Nitto NeoGen 225/30/20

Please don't post in all caps.

WHY? WHATS WRONG?

I sold my Sports Grill 2 a guy in Australia & he said he had 20`s on his i was well shoked :o

asked 4 pics but he never sent me any :(

I'LL HAVE MY 20'S BY WEDNESDAY. I ORDERED 20X7.5 WITH A 35/38 OFFSET...CANT REMEMBER. I'LL POST PICS TOO. MY FRIEND HAD 20X7.5 ON HIS 96 CAMRY (THEY HAVE SIMILAR SUSPENSION) AND IT DIDNT RUB OR ANYTHING. I RECENTLY MOVED AND IN THE AREA I LIVE NOW THERE'S A GUY WITH 22'S ON A 96 CAMRY WITH NO SUSPENSION MODS AND HE ADVISED THAT HE HAS NOT HAD ANY PROBLEMS....ITS ALL ABOUT SELECTING THE RIGHT TIRES AND THE CORRECT WIDTH. FOR THE FRONT TO CLEAR YOU WOULD HAVE TO GET 7.5 AND YOU COULD MAYBE GO 8.5 ON REAR....BUT I WOULDNT PUSH IT WITH 20'S.

20s will deff put your brakes at a mechanical disadvantage...

YOU CAN GO 20X7.5 WITH A 42/45 OFFSET. THEY WILL FIT NO PROBLEM. PLUS 20'S ARE CHEAPER AND EASIER TO RESALE.