Well, since Bruce is falling behind on his camera duties I'll dump some new pics of my stuff out there. I haven't made a whole lot of progress, but I think I'm at the point that I'm done cutting and welding. The only thing I have left is my BOV that got lost by UPS and I have a replacement comming tomarrow. I'm gonna have the pipes professionally welded over Christmas, fit them one last time and ship them to get ceramic coated. Then it's time to start pulling the engine. But without further adue(sp?) here's the pics.

I finally got the wastegate put in there. Worked out nicely. I couldn't decide if I wanted to run a strait dump or not, but some of the camaro people said that you'd be able to hear the turbo better this way. But it'll probably eat up a couple of hp doing it. I also got the O2 bung welded on for the wideband.





Here are some shots of the intercooler mounted in the radiator shroud. I don't have a clue where I'm gonna put my tranny coolers now.








And a picture of the intake piping with a boost reference and the IAT sensor. The O2 bungs seem to be universal fit for some of this stuff, a different taper, but some gasket sealant will fix that.



I also finished up the bracket on the bottom of the down pipe. It should take most of the flex out of the pipes when the car is bumping around. It would have been nice to just weld the cross bar onto the pipe, but then there would be no way that I could ever get the pipe out without pulling off the header and/or pulling the engine.



Oh, and here's my new set of toys. I picked up this little setup for $200 shipped. My fuel pressure regulator was leaking gas out of the top so I figured it was time for a new one. Pollished rails, 6an lines, and a custom bracket for the aeromotive regulator, can't go wrong with that. The only problem is that it's made for the later style LT intake so the bolt holes line up but they are just a little smaller. Nothing a drill can't take care of.






Here's the links to my other picture posts.
http://forums.corvetteforum.com/showthread.php?t=958669
http://forums.corvetteforum.com/showthread.php?t=966370

Now I'm all done till january some time. I've gotta build the fuel lines and figure out WHERE I'm gonna put my tranny coolers.

 

What make and model of Turbo are you using?

 

Its a turbonetics T-76 with a p-trim and 1.0 or 1.15 turbine a/r.

 

The progress on the turbo looks very nice. The IC also looks sweet.

With that being said, I am concerned about your fuel system. The dual -6AN feed and discharge are great, but the discharge necks down to what appears to be a single -4AN return after the regulator. With a decent fuel pump, you will have idle and part throttle control issues, as you will be unable to bleed away enough fuel during the lower injector duty cycle. My suggestion is to upgrade the fuel return from the regulator all the way to the discharge inside the tank.

Are you splitting a -10AN to the dual -6AN on the feed size? If that is the case, -8AN return would be the absolute minimum. What fuel pump are you using to supply the dual -6AN feeds? Many people overlook these sort of details.

Just food for thought.
Aaron

 

Aaron, the 3an fitting you see in the picture(blue) is for the fuel pressure gauge. The 6-an fitting is on the back side of the regulator, there's nothing hooked up to it now so it may be hard to see in the picutre.

I currently have dual walbro pumps and dual 6an feed going to the front of the car. One of the fuel pumps is hooked up to a switch right now and the other is on all the time(nitrous setup) So I'm not sure if I'm going to directly hook them up one to each line or I may put in a double T and keep the second pump turning on only at wot


Double T setup would consist of the incomming fuel going into two lets of one of the t's and going out the third to join them togther(the system would neck down to 6an as a bottle neck but it should be able to flow enough fuel with two pumps pushing it) then the single supply would go into the middle of the second T with the two outlets going to the two fuel rails.

 

Thanks for the correction on the -3AN return actually being a feed for a fuel psi guage. What model of Walbro's are you running? What size is the pickup in the tank to the pump inlet? How is that plumbed? Have you considered ditching the dual -6AN from the tank and converting to a single -10 or -12? What size is the returm line going back to the tank?

Many people size the feed adequately, but unndersize the return. This works fine at WOT, but creats many driveability/idle issues.

Aaron

 

I'm running the dual intank walbro pumps they are the high psi 255lph pumps. The lines going out are the stock line and a second 6-an braided line. I've got a connector jbwelded to the top of the sending unit to get it out of the tank and it runs allong side the other fuel line to the front. I'm running the stock return line, and I was running the stock fuel pressure regulator.

I've had a fuel pressure gauge hooked up with both pumps running and the return line seemed to flow enough fuel just fine, even at idle. There was no jump in psi when I would turn the secondary pump on. I don't think I'll have any problems with it, but if I do I'll address them when I know for sure.

 

very nice! good to see some progress.

 

venting your wastegate to the atmosphere is gonna be LOUD. I raced a single turbo supra once that had his the same way. When we were side by side I thought my ear was gonna start bleeding!

Its basically a header dump of sorts...I doubt you'll hear the turbo over it, but I could be wrong. My experience on the muffling properties of turbos says they don't get as quiet as people think...or my Power Effects exhaust really amplifies the sound. When I run them as straight pipes I wear earplugs if Im gonna drive more than 30-40 mins.

 

The wastegate is going into the down pipe. So it should quiet things down a bit. As for the mufflers I haven't figured that out yet. I know the stock mufflers have to go, but my options are strait pipes or magnaflow mufflers. I'm thinking the magnaflows will be less loud which is a good thing, but I'm not sure how much less.

I take this car on LONG road trips so the noise has to be bearable. When I say long I mean long, I drove the car from Minnesota to Texas this last summer.

 

Id consider doing some 5" Supertrapp cans....There is a Callaway that ran those with no cats and it was really quiet. It has a 3 or 3.5" inlet. Im seriously considering those for my car and selling this Power Effects. I figure a custom SS 3" will run me 1500 plus the mufflers at 250 each.

 

Hey Brian
Your making good progress there man. My computer hard drive took a dump last weekend. I was not able to post any pics. I will post some update this weekend. I will be sending out all my pipes to Swain Tech for coating on Monday. We should be fire her up in abour two weeks. I still have complete the ignition conversion to Delteq next weekend. I am also re-do my fuel system, I am doing exactly same as your. Did you read my mind eh?? I am getting rid of my 93 fuel rails due to restriction in side the rail has a 3/8 tubing inside and I don't like how the way the cross over on the 93 rail. But thanks to Rick, he gave me his 95 rails and I just completed plumbing 2 -08AN at the ends of the rail and 2 -06AN with 90 degree on top for return to the regulator and
-10AN feed.

Bruce

 

Hey Bruce,

What size return to the tank are you using?

 

Bruce, Where is Swain Tech? Are you just getting them ceramic coated? Why them, no jet-hot for you? Jet-Hot was the best price I've found so far for strait pipe.

I'm really glad to hear that you're pipes are almost done. And that you'll be hearing the sound of an exhaust rumble within the next month. I've got that pesky rebuild thing in the way, grrrrrrrr.


EDIT: Ok, I looked up Swain Tech. It sounds like they make a nice ceramic coating, but they come right out and say it, it's functional not cosmetic. I definately need some *bling bling* in my engine bay since those pipes are right up top. Not to mention that I don't think they coat the insides, which is what I need with my mild steel.

 

Brian
Swain Tech is about 10minute drive from my house.

 

Tony
I am running -10 feed and -6 return.

Bruce

 

I believe they do both inside and out. Or at least They will be doing ours that way. We are putting the maximum effort into keeping the heat and velocity high. That way we hopefully won't have to go to a more restritive turbine housing. Yea, it's not as pretty as some others, but I'll take the coating formula developed by a guy who worked for NASA. And took his patents with him.
Even after we coat it, we're gonna wrap the pipes with header wrap. Even the cold side. In addition to a inconel heat wrap over the turbine housing.

As a side note I began beating a giant 5" banjo exhaust. It's pretty damn tough work but it will look sick when Im done. Imagine a form fitting (to the rocker panel) teardrop of stainless opening up in front of the rear tire. Gonna be sweet.

 

just lurking but as you may know you can get some good $$ for those power effects on the parts for sale

 

hey man what intercooler are you running? what are its core demensions? and whats your expected HP output that the intercooler will support? TIA -Roger

 

check out my previous topic on this stuff:
http://forums.corvetteforum.com/showthread.php?t=966370

It should support 1000+ cfm with minimal pressure drop, and more with a tolerable pressure drop. Or atleast this is what I was told from the guy that built it.