turbo

[Captkaos]

Definitely not the case Erik.  The turbo truck we have has no lag, you stomp it and the power is there just like any other turbo'd vehicle.  Lag is directly proportional to improper turbo sizing.

Moving the turbo allows you the ability to skip and intercooler if you want since the air is already cooled. If you factor in all the "distance" that a intercooler would add you have the same amount of piping, except half of it isn't head soaked.   
There has been a lot of doubt about these from people that don't understand them, over the past 8 years, STS pretty much disproved all of this.  Mostly in the first 2 years.

[thachevythang]

I've read that buying the cheap ebay turbos and rebuilding them with a top brand kit can make it worth while. At least way more reliable! A military buddy of mine custom built his using that method. It's been on his 72 cutlass for about 3 yrs no problems.

Is is possible to run twins this method? I never thought about the rear mount turbo! They just look soooo nice under the hood!

[K20Wulf]

This trucks pretty cool!

http://www.youtube.com/watch?v=24v5gzSJ6N8&feature=autoplay&list=SP89FAB5C9B436487B&index=4&playnext=2

That thing is unreal!

[Captkaos]

Yeah we run rear mount duals on several cars.

[HAULIN IT]

As Chris stated...Mine is a "work in process also"
 http://forum.73-87chevytrucks.com/smforum/index.php?topic=15196.0
Here's a clip of Earl's truck...I met him a couple years ago on DragWeek. It has mid-mounted turbos & a big air to water cooler in the front of the bed. It's gone in the 8's. He's a really nice guy & does some great work. Lorne
http://www.youtube.com/watch?v=fLSNLwERIfQ&feature=related

[thachevythang]

This has really got my attention now. I think I might take a crack at it in the future. LQ9 is going into my 57 and my 85 will get the big block swap. I'm havin problems with the 350 thats in it now so I got ALOT of swaps before I get started.

Whats the best method for install? Blow through carb or will one of those EZ efi kits work? I know the intercooler is avoided but what about the wastegate if its an automatic?

[screamin86]

You need a wastegate but a blow off valve isn't really needed if your running a auto trans. The rear mount turbos are pretty sweet but in my car I'd be afraid something from the road would hit it. I'm debating on building a front mount setup on my lsx swap in my trans am should be fun if I ever do it. You can still intercool the rear mounted setups and I've seen some that put exhaust wrap on the downpipes all the way to the turbo.

[HAULIN IT]

 The research I've done leads me to feel that a blow-off valve should be used on all turbo systems regurdless of the automatic transmission. Here's why: When your "in the throttle" the turbine is spinning very fast & when you lift off the gas, the hole where the pressure was going is now closed but the charge tube is still full & the turbo is still filling it...this pressure has to relieve itself through the turbo which doesn't help shaft play, ect. With a BOV in place, the charge tube full of pressure is vented into the atmosphere without any ill effects. For the cost of one I think it's the way to go, needed maybe not, but is the way to go. My Two Cents, Lorne 

[1979C20]

Without a BOV, when you let off the throttle it can and usually will cause the turbo to surge, which puts a lot of stress on it and will cause it to fail sooner.