Finished! C5 vette single T4 turbo setup
Nice work... love the DIY stuff. Next time you spring for better stuff, live and learn. I definitely would hasve opted for a better turbo. The G45 is a 68mm turbo and is huge. I believe you bought it cuz it was cheap $$. You could have a gotten a Master power 70mm turbo that has smaller housings and would tuck up better (and probably would last longer).
Originally Posted by 52172
A TC76 is super small and only 1k dollars and spools very fast and makes big power.
personally, there aren't alot of people out there that has the drive to build something and see it through. If a budget and mind-set a given person has yields a product that isn't up to spec with anothers, is it wrong.... hell no!!!!! 
I like it, you have some future tuning to do on the hardware, to make the kit a bit more likeable, but all and in all, it works, its sounds cool... and its a vette with a turbo, period.
FieroZ34: brotha, with all do respect, cut the guys some slack. Its not up to your standards, fine. But don't trash the guys because it isn't. Your car is a cool project and if I remember, your selling right? But, you have no right to judge when some else is getting a project like this done while others just pay a shop to build something and say that THEY BUILT IT or worse, sit on a couch and complain how they don't have enough time to get **** done..
just chill mang!!! no need for condesending remarks....
I like it, you have some future tuning to do on the hardware, to make the kit a bit more likeable, but all and in all, it works, its sounds cool... and its a vette with a turbo, period.
FieroZ34: brotha, with all do respect, cut the guys some slack. Its not up to your standards, fine. But don't trash the guys because it isn't. Your car is a cool project and if I remember, your selling right?
But, you have no right to judge when some else is getting a project like this done while others just pay a shop to build something and say that THEY BUILT IT or worse, sit on a couch and complain how they don't have enough time to get **** done..just chill mang!!! no need for condesending remarks....
You know what they say when it comes to making HP, your only going to make as much HP as your smallest point will allow. I just can't see how your trying to make power out of a 5.7 liter motor and pushing it through whats equal to a single 2" pipe. The extra few dollars on mandrel bent pipes and properly placed wastegates would have made WAY more HP than you can think compared to your crimp bent tubes. Let us know when you dyno it.
BTW Have you ever read Bell's book Maximium Boost?
BTW Have you ever read Bell's book Maximium Boost?
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Originally Posted by 52172
Roger that I was talking crimps which are much worse than pressure bends right? At least they are smooth.
Phil
Teching In
Joined: Jul 2007
Posts: 3
Likes: 0
Originally Posted by smokinHawk
ok this thread has been cleaned, lets try to keep the bashing down and constructive.
no more crappy posts.
no more crappy posts.
1. Size and brand of turbo (good quality, reasonably priced, capable of supporting 8 psi, yet small in size).
2. Charge pipe diameter
3. Exhaust pipe diameter (after the dual 2.5" "Y" into one)
4. FMIC sizing (how large is enough to cool without going overboard)
5. Brand and size of wastegate and BOV
6. Meth (yes or no)
7. Turbo oil pump specifics and mfg?
8. Injector size
9. Fuel pump size/mfg
Anything else you want to ad....that is all I can think of right now.
Want to maintain driveability so not interested in big cams and loose converters (which is why I am going the turbo route).....want to drive it to LA or Vegas when I want to.
Any info you guys can give would be great!! Wouldn't hurt my feelings if you give sources of supply and ballpark $$ figures for the above parts, but I know that is asking alot.
Thanks in advance for the help.
Originally Posted by Harleys and vettes
Need some CONSTRUCTIVE advice (here is your chance to redeem yourself Fiero, and yes, you are smarter than I am about turbos), new to turbo world but been reading alot. Have a welder (friend of mine does MIG and TIG), lift and good supply of mandrel bent tubing, but have some questions. Trying to put together a single rear mount kit for my '03 vette. Vette is stock now and want to run 5-6 psi now, but have the capability of 8 psi later with engine mods. Questions:
1. Size and brand of turbo (good quality, reasonably priced, capable of supporting 8 psi, yet small in size).
2. Charge pipe diameter
3. Exhaust pipe diameter (after the dual 2.5" "Y" into one)
4. FMIC sizing (how large is enough to cool without going overboard)
5. Brand and size of wastegate and BOV
6. Meth (yes or no)
7. Turbo oil pump specifics and mfg?
8. Injector size
9. Fuel pump size/mfg
1. Size and brand of turbo (good quality, reasonably priced, capable of supporting 8 psi, yet small in size).
2. Charge pipe diameter
3. Exhaust pipe diameter (after the dual 2.5" "Y" into one)
4. FMIC sizing (how large is enough to cool without going overboard)
5. Brand and size of wastegate and BOV
6. Meth (yes or no)
7. Turbo oil pump specifics and mfg?
8. Injector size
9. Fuel pump size/mfg
1. As for brand, there is little debate that the highest quality, precision, and overall performance goes to Garrett's GTr series. With dual ball bearing, water cooled center pieces, they can achieve over 82% AE, while spooling near 1,000rpm faster than a traditional turbocharger.
2. You shouldn't need more than 2.5".
3. 3", 4" after turbo
4. You can't go overboard with an intercooler IMHO. The added volume will be negligible, especially when you have 8ft of 2.5" pipe to fill first, and the results will be better the bigger you go (Less pressure loss, better adiabatic dissipation properties, etc). Go as big as you can fit without cutting anything too important.
5. Size I'm not sure on, but TiAL wastegates are the best, and the HKS Super Sequential BOV is the best out there.
6. I'm going to get ripped a new one for this. I don't like meth. To me, it is more a band aid than it is a performance accessory. If you need cooler charge temps, get a better turbo, or a better intercooler. But meth seems to be quite popular on LS1Tech. I don't like it, because like NOS, it isn't always there. And if you've tuned for it, and you're running max boost like you have it, then the day it fails is the day a piston gets a nice hole.
7. Another reason why rear mounts suck. Not sure on this one (The oil pump, I'm positive rear mounts suck)
8. Can't really help you here either. 37-42.5 range seems pretty popular around here though.
9. Walbro pumps seem to have the best reputation, I'm using a 255 in my Fiero. Not sure on the size you'll need, but a 255 seems plenty on most apps.
i few things ive noticed about this build.. and ive been learning alot about rear mount turbos as i just completed an sts turbo build on my fbody..
first your suppose to use aluminum for your charge pipe.. its wayyy lighter. and you lose alota the cooling affect because the steel keeps in alot more heat. it also looks like its guuna take some heat from being so close to your exhaust.. wrapping all your exhaust could help some
that turbo is crazy low, and the filter will get destroyed by everything the tire throws at it, also the diameter of the exhaust pipe after the turbo looks pretty small
the turbo does look kinda plastic
hows your electric oil pump?? pcv setup? whered you mount the wastegate and what type is it???
first your suppose to use aluminum for your charge pipe.. its wayyy lighter. and you lose alota the cooling affect because the steel keeps in alot more heat. it also looks like its guuna take some heat from being so close to your exhaust.. wrapping all your exhaust could help some
that turbo is crazy low, and the filter will get destroyed by everything the tire throws at it, also the diameter of the exhaust pipe after the turbo looks pretty small
the turbo does look kinda plastic
hows your electric oil pump?? pcv setup? whered you mount the wastegate and what type is it???
thanks for the compliments from the ones who gave it. Dyno numbers soon.
jeffboy757 the pump is a Shurflo 8000, the wastegate is a hks and is mounted about 2 foot from the turbo
jeffboy757 the pump is a Shurflo 8000, the wastegate is a hks and is mounted about 2 foot from the turbo
