jgscott

iTrader: (1)

I go in the IS Forum often. Just thought I would post this for the 4th GS350 Forum about the 2GR 3.5 potential and mods that work for performance. I am still in the works on my own car soon to be completed. I've see the 2GR Lexus 3.5 motor Modded results a few different time's that gained like this. Notice the backed up times with the Draggy that has been documented tested to be 1 - 2 Tenths of a Sec matched with real times. Sometimes it even shows Slower than the actual track times real comparison. Just thought I would share something different that the usual post here in the 4th Gen GS forum.

https://www.clublexus.com/forums/is-...-on-is350.html

"So after a bit of driving, I took out my Dragy to get a new 0-60, 1/8 mile, 1/4 mile, and 60-130 and I wanted to see if the e30 blend makes any difference at all.
My best times that I have gotten before putting the E30 blend in my car and just being FBO + Tuned were:
0-60 : 4.78sec
1/8 mile : 8.48sec @ 84mph
1/4 mile : 13.16sec @ 103mph
60-130 : 14.74sec

Now my times with being FBO + Tuned on E30 blend:
0-60 : 4.61sec
1/8 mile : 8.35sec @ 85mph
1/4 mile : 12.93sec @ 106mph
60-130 : 14.64sec"

Knucklebus

Is E30 available in your area or are you mixing it yourself? I'm pretty much limited to E10 and E0 here.

By my old school reckoning, 0.1s in the 1/4 mile is equal to 100lbs or 10 HP for a 2 ton car. Assuming it is a 2 ton car, that looks like right around 360+HP by my calculations. What's your redline? Any torque curve info? I like my torque curves high and flat.

Also, our cars (mine 2013) had a clear warning against any fuel above E10 on the gas cap. Did you do anything else to harden the fuel system against the corrosive action of higher ethanol content?

ItzFilyO

Older IS350s are quicker than the new ones even stock. I think they can already get to 60 in under 5 sec stock due to the aggressive gearing.

jgscott

iTrader: (1)

That's not my car. I think by Dynos some have done its 330+ish hp. No I don't run E85, I do run 93 and Octane Booster every now and then. The 2GR has a extremely Flat toque curve by nature. I know the D3 Tune that I run has shows some very nice increased Flat curves. Again I just posted to share because there is so much misconception here IMO, about Mods, Tunes and results, is all.

Knucklebus

No doubt the manufacturer leaves some on the table but those are the safety margins they build in to keep them going for 200,000 miles or more.

Around here I can get 92 E0. Mixed with half a tank of 93 E10 should net something closer to 94 octane if it were tuned for it.

bclexus

Knuckle - Do you have Sunoco Ultra 94 or their 100 octane gasoline in your area?

Sunoco used to have a 260 blend in the 1960s which was 100 octane leaded gasoline that was popular with owners of muscle cars back then.

Knucklebus

I don't think so but we have VP Racing fuel at the track. I hear if a person has connections, they can get 100LL from the airport.

bclexus

I figured you'd probably know where to get 100 octane gas with you owning muscle cars. It used to be you just pulled your trailer with the drag car over to the Av tank and go inside the service office and buy as much as you needed - of course you didn't buy too much because of weight. 100LL Av gas tends to produce a blue flame - a telltale sign it's being used if someone shouldn't be using it in their bracket. Factory carb jets aren't usually matched best to use Av gas.

Knucklebus

I usually only cut a few gallons into a tank to get me into a safe zone. Two gallons of 100 into 10 gallons of 93 makes at least 95 since the lead helps the unleaded reach its potential.

I built that recent motor with only 9.5:1 compression with aluminum heads so it will run on 87 if I don't stand on it. Mixing a half a tank of 93 gives me more than enough safety and I haven't bought booster or racing gas in years. Sure, you give up a little performance but the safety margin is comforting.