1987 Iroc 5.7 TPI with T-70 single turbo, megasquirt, 6 psi cruising around with AC on
Having a little bit of fun with the turbo 5.7 Iroc. At the time of this video I've finished the 3" downpipe all the way to the cat (no more leaky Exhaust from the first video). I was testing some heat barrier tape today that I put on the AC system components. Seems to work well, nice cold air all day. I'm putting on a 3" cat back next week so it won't be as quiet in the future but it will be as quiet as I can make it (unfortunately a Flowmaster is on the 3" system but that will change to Magnaflow in the near future) and a Walbro pump and then it's off to the land of 12-15 psi!
Just a teaser video from the outside at the end of the video. I didn't want to get in trouble driving crazy so I only took off once and it ended up being too far from the camera. It left black marks and didn't really get anywhere fast but it was fun. I'm working on getting some good outside footage soon. Probably when I get a little more Boost so it's more interesting to see & hear.
See the build at http://www.mentalsocket.com/iroc87
Louis' Twin Turbo Iroc-Z Camaro
My boyz twin turbo monster !! He built
this whole car himself, 427 custom small block all forged internals w twin
ball bearing garrets !! Estimated hp over 1000 .. New video coming soon !!
1984 El Camino Single Ebay Turbo 327 first start and drive 1080p hi-def
A friend of mine just got his single turbo El Camino project running and he is about to
become addicted to turbos. Engine is a
327 with Sportmans II iron heads, one piece Holley 600 blow-thru. He used
ebay turbo headers and a late model full
size chevy truck Y pipe to make a great looking setup. It's not dialed in
yet and way too rich, but it still ran strong for the first run. Lots of
Ebay parts here and he has under $1000 in the whole turbo project.
1987 Iroc Turbocharged TPI 350 burnouts and donuts
When will it blow? We'll know when I turn the Boost up soon. Still waiting on my fuel pump
to arrive. Just some sights and sounds of the turbo Iroc after getting the 3" Flowmaster catback
on it. The new Exhaust brought the Boost up to 7.2 psi. Before long it
will be 15 psi. For now it is pretty fun even with low Boost because the rear tires are old and hard.
I'm almost done using them and we'll throw some Fusion ZRI's on the back
and then it's off to the dragstrip. Also at the very end of the video you
can hear the $20 Ebay blowoff valve doing its job!
See my other vids for more into on the setup.
1987 Iroc 5.7 TPI with T-70 single turbo, megasquirt, 6 psi first drive
Build info at http://www.mentalsocket.com/iroc87
First video of the turbo setup running.
Car is completely stock 5.7 TPI with 140k miles on it, except for
Precision turbo 65# injectors,
Megasquirt II 3.0 and an Ebay T-70 turbo
with a $20 Ebay blowoff valve. Exhaust is noisy because I haven't welded the
flanges on the front of the cat. Stock 2.5" Exhaust and muffler still too!
Already finding the limits of the stock fuel pump and ignition, so
upgrades coming soon. Yes I know the manifold is leaking, have to pull
all of it back off this week to find the source. Also have to put some
additional heat shielding in and run the cold air intake tubing. Intercooler coming after the fuel
upgrades so I can turn up the Boost.
Plan to run 12 psi on the stock engine and 18-20 after I upgrade the
Lot's of fun, not really so fast but hella better than stock! At 6 psi,
the engine should be producing around 315 hp and 435 ft lbs tq
Turbo Iroc 5.7 TPI second dyno session - stock 140k engine Dyno sheet:
Build details: http://www.mentalsocket.com/iroc87
This is my second time on a Dyno with the turbo Iroc. Engine is completely stock 350 tuned
port injection except for injectors, Megasquirt II 3.0, MSD 6AL and of
course the turbo. turbo is a 60mm ebay cheapo. 140k on the clock
and still running strong! Running about 10 psi at the time of this video.
Car runs 7.89 1/8 at 11.5 psi.
Final numbers were 272 rwhp and 378 rwtq. Can't start the test any sooner
because the transmission wants to kick down, buy my peak torque occurs
before the test starts.
1987 Iroc Z28 single turbo TPI 5.7 first dyno pull Dyno sheet:
Build info: http://mentalsocket.com/Iroc87
Completely stock TPI 5.7 (except for injectors and a Megasquirt) with a
single T70 ebay turbo on the Dyno at Panhandle Performance in
Panama City, Fl. Final uncorrected 264.3 rwhp @ 4364 and 332.8 rwtq @
On the first and only Dyno pull, we ran into three
problems! Fuel pressure dropped, AFR climbed to 13.0 at full Boost (prompting early shutdown) and it Boosted well beyond the 9.5 I normally
see - almost 13 psi. Because I only run 9 psi, anything over 10 psi drops
the timing to 12-13 degrees and I add in a lot of fuel to compensate for
over-Boost in case of wastegate
failure, etc. The Dyno configuration put more of a
load on the car than it normally sees, and the result of the loading was
the wastegate was unable to release enough Exhaust pressure to keep the Boost down.
This was just a shakedown run and we hadn't set up the detent cable for WOT
without downshifting, so the torque peak occurred later than it should
have since we couldn't go WOT until later in the RPM range. I'm going to
go ahead and get my Walbro in and intercool it before coming back for
another Dyno session.
All in all, still pretty happy that this old engine put down what it did.