Just moved to Kansas and they only have 91 octane here!!!
01-25-2012, 06:39 PM
#21
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Ran 97 octane this week. Really seems like the sweet spot for this low mileage LT1. It is really like going back in time and working with a 94 out of the box. I am using xylene and 5 oz of lead substitute.
On another note I just finished my exhaust inlet piece for my 61mm Cold/100mm Hot turbo. Should be running 4 psi by Feb 10 as I am only missing two pieces to completion.
Last major part is the tuning side, still waiting on cable adapter for that. Gonna use tuner cat and have some one coach me through it the first time.
On another note I just finished my exhaust inlet piece for my 61mm Cold/100mm Hot turbo. Should be running 4 psi by Feb 10 as I am only missing two pieces to completion.
Last major part is the tuning side, still waiting on cable adapter for that. Gonna use tuner cat and have some one coach me through it the first time.
01-26-2012, 01:00 PM
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I never had any issues with 91 really. I have installed many cams in cars. One of the highest hp cam only Z06's I have seen/done put down 580rwhp with just cam and headers on 91 octane QT fuel.
01-26-2012, 05:52 PM
#26
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+1 for that, I've seen plenty of big power cars running pump gas with no problems at all. You just have to build the motor correctly... check this nasty C5Z out-
It proves that you don't *need E85 or race gas, just people with half a brain.
http://www.youtube.com/watch?v=olGzFV3_Evg
It proves that you don't *need E85 or race gas, just people with half a brain.
http://www.youtube.com/watch?v=olGzFV3_Evg
01-26-2012, 07:36 PM
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I will have a 13.3 dynamic compression at 4 lbs of boost. That is why I want to run higher octane fuel. Im also going to richen the mix and retard the timing at full boost. Im running fresh but stock parts so I am trying to cover this from all angles.
01-26-2012, 07:36 PM
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01-26-2012, 07:37 PM
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xylene is working fine and not too hard on the wallet. I think that I have found my answer for now. That and a fifth injector shooting methanol / water.
01-26-2012, 07:55 PM
#31
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Oh I didn't know you were gonna boost her... if you're already dead set on getting it setup for boost I say find some high octane fuel for the time being, then switch to a low compression setup. Then more boost and back to pump gas!!
01-28-2012, 03:34 PM
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Yeah. This is my first turbo build, I have had one turbo car before, a 300zx single turbo. I learned a lot of from that car. Im more than halfway done but I want it to be perfect when I slap it on.
01-28-2012, 04:13 PM
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I believe it was a 90' twin turbo, the OEM cream looking white exterior, all red cloth interior, 5 speed, T-Top, bone stock... ready to be molested hah. Awesome cars.
01-28-2012, 08:28 PM
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Yeah I had an 86 with 60,000 miles. It was a great car, with an a/c delete and removing the exhaust from the down pipe, ran about 8.5 -9 psi. It was a little beastie. Used to beat up on the ragged out 5.0s around town. Alas with the uber cool digital dash and all that it had hella electrical problems and I eventually dumped it off on some one else. To this day I regret it.
01-28-2012, 08:45 PM
#36
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Yeah I had an 86 with 60,000 miles. It was a great car, with an a/c delete and removing the exhaust from the down pipe, ran about 8.5 -9 psi. It was a little beastie. Used to beat up on the ragged out 5.0s around town. Alas with the uber cool digital dash and all that it had hella electrical problems and I eventually dumped it off on some one else. To this day I regret it.
01-28-2012, 10:49 PM
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yeah the exhaust just spewed out of the turbo, sounding like a giant hair dryer going down the road. Had a muffler with nothing connected to it on the back , so some times it confused people, and they would even walk up and look under the car . And all they would see is a muffler attached to invisible pipes!
01-28-2012, 11:02 PM
#38
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yeah the exhaust just spewed out of the turbo, sounding like a giant hair dryer going down the road. Had a muffler with nothing connected to it on the back , so some times it confused people, and they would even walk up and look under the car . And all they would see is a muffler attached to invisible pipes!
01-28-2012, 11:04 PM
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So far, running 98 octane with just intake and full exhaust on a fresh LT1 I am able to spin the tires entering gears 1-3 from a stop, and I am able to bark the tires rolling at 45 mph. You can smell the xylene burning for sure. Also , today I through in some ethanol deposit cleaner just in case I have been getting snuck some E10, it is really popular here, and all the pumps have that stupid warning of "may contain 10% ethanol/alcohol". I try and use stations that dont have it.
01-28-2012, 11:20 PM
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