My turbo 4.8l 87 IROC build
#101
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
Re: My turbo 4.8l 87 IROC build
painted my pedals and cut the hole for my shifter so far today. lunch break.
like my shift ****?
like my shift ****?
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Car: 92 25th anv z28
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Re: My turbo 4.8l 87 IROC build
Lookin good, Mine slowed down. Lack of time. Well and vendors.
#103
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
Re: My turbo 4.8l 87 IROC build
well now theres 3 pedals in there. next is my biggest part i think of this whole thing. i want to get rid of any old wiring that i dont need for the new motor. anything not needed for driveability. stuff like the factory ecm, a/c, heater etc. just want to have whatever is needed for the motor and the cars headlights, tail lights, wipers, windows, my aftermarket gauges, etc...
this is the stuff i need to find out what i can get out.
this is the stuff i need to find out what i can get out.
Last edited by INTIMIDATOR Z; 12-10-2011 at 04:56 PM.
#108
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
Re: My turbo 4.8l 87 IROC build
new part acquired!:
HPTuners pro
new part acquired!:
4th gen fuse block
HPTuners pro
new part acquired!:
4th gen fuse block
#111
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
Re: My turbo 4.8l 87 IROC build
got some work done on the underdash wiring yesterday. tryin tog et rid of the old ECM and non related wiring i dont need.
new part acquired!:
complete power steering setup
new part acquired!:
master cylinder w/ line
new part acquired!:
complete power steering setup
new part acquired!:
master cylinder w/ line
#112
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
Re: My turbo 4.8l 87 IROC build
well finished up the 91z last week. its running good and no leaks.
decided to finally bolt down my intake manifold. been gettin a little better with my harbor freight welder so i welded up bar to mount my intercooler to.
decided to finally bolt down my intake manifold. been gettin a little better with my harbor freight welder so i welded up bar to mount my intercooler to.
#114
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Car: 86 Trans Am,03 Yukon,92 Z28
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Transmission: th350,4l60e,700r4
Axle/Gears: 3.73,3.73,2.73
Re: My turbo 4.8l 87 IROC build
yeah the harbor freight welder does what it needs to do but it can act up lol. gotta prep whatever you are welding good.
#115
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
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Re: My turbo 4.8l 87 IROC build
yeah the welder splatters alot! ill try and take a pic of it but i already grinded the splatter and painted over it.
#117
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Re: My turbo 4.8l 87 IROC build
it does not weld sheet metal very good it can be done but will not be pretty. i used mine to patch my floor pan and what a nightmare. does great on exhaust work though.
#118
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
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Re: My turbo 4.8l 87 IROC build
yeah it seems to only work well on thicker stuff.
#119
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Re: My turbo 4.8l 87 IROC build
if I'm thinking of the correct harbor freight welder ya'll are talking about, its a flux core welder?
Flux core is hotter than gas shielded and also has inherent splatter problems, but it can be used for even the thinest of metals if your good with it. I have burned probably 20+ spools of wire and I'm just getting to the point where I can make nice looking and strong welds. Gas shielded is worlds easier though
Flux core is hotter than gas shielded and also has inherent splatter problems, but it can be used for even the thinest of metals if your good with it. I have burned probably 20+ spools of wire and I'm just getting to the point where I can make nice looking and strong welds. Gas shielded is worlds easier though
#120
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Re: My turbo 4.8l 87 IROC build
any gas welder is easy, i used them back in high school, my teacher showed me once and i caught on that quick, but this thing is a major pain in my ****. the rust is the inside of y car but the doors sill area so its not the floor its that sidewall and ive gone through a few pieces of metal trying to get it to my liking. next i try thicker metal
#121
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Re: My turbo 4.8l 87 IROC build
Just use the lowest heat setting if you can, and the thinnest flux core wire on the ultra thin stuff. I think you can get .030" wire as standard stuff is .035" I believe. I agree tho, flux core stuff is best for abit thicker stuff...especially on 16ga exhaust tubes. Works well on that.
Flux core is messy and dirty tho...gotta keep the area clean with a wire brush
Flux core is messy and dirty tho...gotta keep the area clean with a wire brush
#123
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Re: My turbo 4.8l 87 IROC build
threw the bumper to see how its goin to look.
Last edited by INTIMIDATOR Z; 01-04-2012 at 03:12 AM.
#124
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Car: 86 Trans Am,03 Yukon,92 Z28
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Transmission: th350,4l60e,700r4
Axle/Gears: 3.73,3.73,2.73
Re: My turbo 4.8l 87 IROC build
heck yeah looks good! im contemplating on a turbo build someday but id like to keep a/c lol
#125
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Re: My turbo 4.8l 87 IROC build
well todays goals were pretty much completed. fuel pump and aftermarket sender installed (just need new O ring), installed my machined balancer pulley.
#130
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Engine: Turbo 293ci 4.8l
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Re: My turbo 4.8l 87 IROC build
well goals today were to mount the waterpump, install stupid exspensive plugs i got cheap off ebay, start on wiring, and try to fab up a mount for the alternator. did pretty much everything but didnt get to fab a mount though.
started with this:
supposedly un-touched harness from a member off LS1tech:
almost done:
some shifter handles my pops machined:
started with this:
supposedly un-touched harness from a member off LS1tech:
almost done:
some shifter handles my pops machined:
#132
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
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Re: My turbo 4.8l 87 IROC build
yeah there was one more splice down the line but besides that it looks good. just dont like when people lie.
#133
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Re: My turbo 4.8l 87 IROC build
Yeah I got ripped off on a oil pan on ls1tech one time :/. Disputed it on PayPal too and never got resolved
#136
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Engine: Turbo 293ci 4.8l
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Re: My turbo 4.8l 87 IROC build
im alright with those lines. its the same way i have them on my 91 and have had no issues.
i put a 255lph pump and sending unit for the aftermarket gauges.
i put a 255lph pump and sending unit for the aftermarket gauges.
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Re: My turbo 4.8l 87 IROC build
Subscribed. Looking great.
I love watching these LS engine builds and swaps!
I love watching these LS engine builds and swaps!
#138
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
Re: My turbo 4.8l 87 IROC build
did some wiring and still tryin to figure how im goin to fab up a alternator mount.
after lunch goin to start on the fun part
also hooked my gauges up to see what theyll look like. the turn red when the shift light hits.
after lunch goin to start on the fun part
also hooked my gauges up to see what theyll look like. the turn red when the shift light hits.
#141
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Engine: Turbo 293ci 4.8l
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Re: My turbo 4.8l 87 IROC build
got the cold side pretty much done. dropped one of the tubes off to get the BOV flange welded on. also finished some more wiring. still waiting for my turbo headers.
Last edited by INTIMIDATOR Z; 01-11-2012 at 07:34 PM.
#142
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Car: 1990 iroc z
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Re: My turbo 4.8l 87 IROC build
your car is looking, nice progress you have going with it! Why did you end up mounting the alternator on the passenger side? What kind of turbo headers are you going with?
#143
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
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Re: My turbo 4.8l 87 IROC build
i bought a set of log headers some guy built for his 3rd gen but came into financial issues. im mounting it over there cause i dont think ill be able to run it in the stock (f-body) location. could be wrong though.
this is them.
this is them.
#144
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
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Re: My turbo 4.8l 87 IROC build
got my BOV flange welded up so installed the BOV and piping. lovin the look.
#146
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Re: My turbo 4.8l 87 IROC build
Be careful with wideband o2 sensors before turbo...the high temps and pressures can wear out the sensors quickly and cause false readings. Some sensors are better equipped to handle this application. NTK sensors (sold under NGK) work well. NGK Powerdex is another that has shown longer life compared to the cheaper bosch sensors when used in pre turbo applications.
I like putting the o2 after turbine.
Just commenting as it looks like those logs had bungs in them.
I like putting the o2 after turbine.
Just commenting as it looks like those logs had bungs in them.
#147
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Engine: Turbo 293ci 4.8l
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Re: My turbo 4.8l 87 IROC build
you know ive been hearing all different things about o2 sensor locations from different tuners. on one of my other builds i just put both o2's on the downpipe and had no issue. i hear thats not good cause it can tune one side of the motor wrong.
#148
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Re: My turbo 4.8l 87 IROC build
LSx may be abit different and require 2 o2's, one on each bank for closed loop. These would be narrow band o2 sensors. I'm not familiar with the software with those and when I asked around it seems like there is no "open loop" mode and it needs separate o2's.
For the wideband it doesnt really matter. Now if you did a twin turbo setup with dual exhaust, you'd want to check both banks to see how the air fuel is doing. I've done this with my build and found it was pretty even.
If the motor is getting even air distribution across all cylinders, it shouldnt matter if both o2's are in the same pipe. You can try putting them in the logs or somewhere in before the turbo for each bank of cylinders, but just keep in mind that the sensors may or may not last long.
For the wideband it doesnt really matter. Now if you did a twin turbo setup with dual exhaust, you'd want to check both banks to see how the air fuel is doing. I've done this with my build and found it was pretty even.
If the motor is getting even air distribution across all cylinders, it shouldnt matter if both o2's are in the same pipe. You can try putting them in the logs or somewhere in before the turbo for each bank of cylinders, but just keep in mind that the sensors may or may not last long.
#149
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Re: My turbo 4.8l 87 IROC build
think im gettin screwed on my headers. anyways got the fuel done, most the wiring done, gotta mount the battery and run the wiring. need to get a 2 bar map, lt1 spark plug wires and i think i should be able to fire it up without the turbo.
shift **** and vacuum manifold my pops made for me. tried to make him do it in 3rd gen font but he didnt want to. lol
shift **** and vacuum manifold my pops made for me. tried to make him do it in 3rd gen font but he didnt want to. lol
Last edited by INTIMIDATOR Z; 01-20-2012 at 12:30 AM.
#150
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Re: My turbo 4.8l 87 IROC build
lookin good man, we need more turbo LSx builds on the board and this ones shapin up to be a screamer. keep it up!