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11.5:1 + nitrous on 93 octane ?

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Old 02-18-2014, 11:11 PM
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Default 11.5:1 + nitrous on 93 octane ?

Cant seem to get a strait answer on this. New to nitrous and just need to know if im gonna have to run race fuel to spray. Car is a daily driver so it would kinda be a pain in the neck but if thats what it needs then it is what it is. Bottom is forged, rings are gapped for nitrous. TEA/tfs 225's have the nitrous exhaust ports, 59cc chambers, pistons .010 out the hole, .052 gasket. Airmotive 340 pump. Spraying 200 shot through 102 plate kit. Car is making 500whp n/a. Let me know if im missing any relevant info. I do appreciate any help.
Old 02-18-2014, 11:18 PM
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Well i'm running a combo very similar to yours with 11.5:1 comression and a 100 shot. 93 octane works just fine for me at this level. Was gonna go with a 150 shot, but figured it was a bit much with the 4.10 gear
Old 02-19-2014, 06:11 AM
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I think you'll be fine on 93, but if not, Nitrous Outlet makes a dedicated fuel cell that bolts right in without having to do any modifications. It goes right where the fuse box.
Old 02-19-2014, 08:26 AM
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I would like to run a dedicated fuel system but cant afford one right now. Im having a hard enough time swinging the n2o system with all the accessories. Ive been told 10.8 and up needs race fuel added, then ive heard 11.5 is fine by a couple people. Just want to make sure. Sam Miller tuned the car, waiting to hear back from him on what he thinks.

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Old 02-19-2014, 09:43 AM
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You're fine, but make sure you have enough timing pulled.
Old 02-19-2014, 10:38 AM
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Originally Posted by shortdog
You're fine, but make sure you have enough timing pulled.
This.

-Garrett
Old 02-19-2014, 06:34 PM
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My tuner says I will be easily good for a 150 shot with 11.5:1 on 93. Also told that if I want to move up to a 200-250 shot it would be in my best interest to put a stand alone fuel system in....
Old 02-19-2014, 07:54 PM
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we ran a 12:1 346 cube motor with "150" shot on it with straight 93 off the rail. Didnt have any problems, though we did run a NGK B9EFS plug.
Old 02-19-2014, 08:02 PM
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Any issues running those plugs NA?
Old 02-19-2014, 08:06 PM
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initially just took a little longer to warm up, but i just added some more fuel for cold start. This is BoostedCatfish's vette BTW
Old 02-19-2014, 08:12 PM
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I'm going to be adding a plate kit here soon and will be looking to spray a 150 shot. Sounds like those plugs would be good for me, as I'm at 11.5:1 compression on my 346.
Old 02-19-2014, 08:24 PM
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we buy these plugs by the case, all 3 cars in our camp run them. walked out to the shop and snapped a pic of what we use for easy reference.

Old 02-19-2014, 08:26 PM
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I'll also add, that NA with some TR6 plugs his car barely made any more power over the -9's, so i wouldnt worry too much about power loss, however they foul out very easy if not warmed up properly.
Old 02-19-2014, 08:34 PM
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Thanks a bunch for the information; very helpful.



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