Ls1 Iroc Swapping to Turbo - billet 78/75 and A/W - Page 5 - LS1TECH - Camaro and Firebird Forum Discussion



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Ls1 Iroc Swapping to Turbo - billet 78/75 and A/W

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Old 02-09-2017, 09:06 AM   #81
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Well, drove the car today. Was a bit upset at the biggenig by then I figured it out.
1/2 mile into the drive the car started puking oil out of the exhaust. I thought the turbo seals were screwed. Pulled the oil fill cap off and all is well, problem gone. Time for a vented catch can it seams.


It's on 5# right now and it feels like an animal. I ran [email protected] on motor before and the car would dead hook on the street, dig or roll. Now, it blows the tires off from a dig or roll. Some suspension work might be in order if the new tires don't hold it.

Think I'm going. To do a hood exit exhaust. I cannot believe how quite it is with only 8" of pipe on the turbo, much quieter than the car was n/a. Took a couple local guys for a ride that own ls7 454 Chevelles and they about **** themselves. It's going to be a good year.
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Old 02-09-2017, 05:11 PM   #82
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Do you have silicone 90's or metal/plastic ones?
Its all metal. I pie cut a bunch of 4" aluminum pipe and welded it up, total pita.

Glad to hear it's up and running! And good call on the oil cap.
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Old 02-09-2017, 05:24 PM   #83
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Good stuff man!! Not sure if I missed it, but what are you tuning with?
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Old 02-09-2017, 05:49 PM   #84
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Congrats on having a problem free-ish first drive. I totally understand the want for a hood exit after having a lopy n/a steup.The turbo really takes that aspect away. But the way power comes on is surreal.My car doesnt want to hook worth a damn on the city streets...will wiggle in 4th from a roll. Takes getting used to again and thats the fun part.

Im anxiously waiting for my billet 84mm to arrive tonight and put that bitch on..first thing in the morning and see what turbo whistles that thing gives me vs my old 78 cast snail.
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Old 02-09-2017, 06:37 PM   #85
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Thanks stover!

I'm using the stock gm ecu and hp tuners

Thanks! It is the weirdest thing, listening to the back of the hood exit lope and then walking around to the back of the car and hearing nothing. It's messing with my head pretty hard core haha! Swapping in my 3.08's right now. Laying on my back in my yard, it's 12* here right now. I'm ready for race season lol
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Old 02-09-2017, 06:46 PM   #86
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Here is the worlds worst video, but you can hear how quickly it spools. Car got loose all over the road on 5#. Timing is at a very conservative 13* on e85

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Old 02-09-2017, 06:56 PM   #87
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That thing spools faster than a NY second. Nice to see your hard work come alive.
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Old 02-09-2017, 09:09 PM   #88
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I lol'd hearing it light up...My billlet 84mm has arrived tonight. its going to be my pillow till the morning and Ill be soon make the same..if not more silly noises such as your Iroc. Lol
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Old 02-09-2017, 09:42 PM   #89
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Yes it does! Very very pleased! Haven't even started playing with the tune to make it better.


Red Bull be sure to report back how it responds, and any comparison data you have! I'm very interested!


I swapped back to my 3.08's tonight, and installed my carbon ford racing clutch kit.
I'm pretty sure the converter is going to require being changed, it revs and makes a lot of noise but doesn't do a whole lot. Pretty sure it's blowing thrue the converter. But I've never experienced that before, so I'm not sure.
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Old 02-09-2017, 10:04 PM   #90
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How much change is there from gas to e85 tuning wise? I'm data logging with gas but wonder if I should just make the switch if my tune will be off.
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Old 02-10-2017, 12:30 PM   #91
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How much change is there from gas to e85 tuning wise? I'm data logging with gas but wonder if I should just make the switch if my tune will be off.

Biggest thing is is it takes about 33% more fuel than pump gas, said injectors and pumps become expensive. I'm running it because it's cheap and readily available here. Biggest perks imo is the detonation resistance. I'm no pro tuner so I like the safety factor.
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Old 02-12-2017, 02:06 PM   #92
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Yeah e85 is the same price as gas in washington that I've found :/ like cwarta said you have to richen up the mixture a bunch. Your target a/f changes
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Old 02-12-2017, 08:26 PM   #93
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Took he wife and kiddos for a ride, wife about had a heart attack when the hood stack lit up haha.
Here is another pull, a lot better vid. 13*, 5#, 4 people in the car.

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Old 02-12-2017, 08:30 PM   #94
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Sounds like its blowing thru the converter? What converter do you have now?
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Old 02-12-2017, 08:51 PM   #95
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I don't know, it's out of one of our pulling tractors. Billet cover 9.5". No numbers or markings on it. I'm going to pull it and send it to ptc
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Old 02-13-2017, 08:59 AM   #96
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Sounds great man, cant wait for some more footage.

Jay
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Old 02-13-2017, 09:12 AM   #97
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Sounds great man, cant wait for some more footage.

Jay
thanks! I'm excited as well, I've been very happy so far. Can't wait to see what Tripling the boost and adding some timing does for it.

spoke with dusty at ptc, sent him that video. He recommended that I spin the engine to my shift rpm of 6500 and then shift and see what the drop is and then make the decision if it needs pulled or not.
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Old 02-13-2017, 09:40 AM   #98
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Awesome build!

How are you liking the HP tuners? I just got my sbe turbo 5.3 started yesterday and going to start tuning soon.
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Old 02-13-2017, 09:46 AM   #99
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thanks! I'm excited as well, I've been very happy so far. Can't wait to see what Tripling the boost and adding some timing does for it.

spoke with dusty at ptc, sent him that video. He recommended that I spin the engine to my shift rpm of 6500 and then shift and see what the drop is and then make the decision if it needs pulled or not.
finished the exhaust almost, need one more 45* to come up and out with.

Installed an an air filter, I'm a little nervous to use this silicone 90* but its all I had/will fit.
Thoughts?


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Old 02-13-2017, 09:36 PM   #100
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Tires showed up
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