Quote:
Originally posted by jim_howard_pdx
Second, why do you want a turbo charged engine? You are going to cook the inside of the engine bay. So if you are not road racing, or going for a bonneville record you should be looking at a centrifugal supercharger like a Paxton or a Velodyne unit. These are awesome units.
I built a twin turbo charged 350 small block chevy engine once. It was slow as hell to 100. Then ran 100-150 mph like a DEMON. It could not come close to beating a turbo porsche, so I sold it to a kid that wanted a twin turbo engine. By the way, just the dual waste gates for that engine cost me 750 bucks back in the 80's. Just imagine what it will cost to build a safe dual turbo today.
You can do this without the heat and damage done by turbocharging. Really, I HATE TURBOS because of what they do to the engine bay. They are a big hair dryer.
Don't take me wrong, they are the way to go if you want to go faster than 190 mph. But really, turbos are for road racing and super chargers are for off the line. NOS is for those that want a great car with power on demand.
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Jim, your always good for a laugh. Please explain to me what kind of heat damage can come from a turbo? I have several friends with superchargers and my underhood temperatures are no hotter than thiers. Do I have an exact temp reading, no, but from working on both, I can get in and work under the hood as quick or quicker than they can after a run. When I get around to putting a cowl hood on my car, most have seen a decrease in underhood temps by as much as 20*. What do you think a supercharger produces besides some hp or torque, HEAT.
And as far as turbos are for road racing and blowers are for the track. I've always been told and heard just the opposite. Turbos produces massive amounts of torque, far more than a blower, which we all know is what gets you car moving. Wouldn't that be better at the drag strip? Also, wouldn't that torque get you in trouble trying to cornor on a road course. And lets mention the hp it takes to spin a supercharger and the excessive wear or the bearings vs the almost free hp produced by a turbo and no wear on the bearings.
Yes, I'm biased. I own a turbo, but their are alot of misconceptions about turbos that need to be cleared up. And as far as wastegates costing $750, lets just say as the avaliability has increased, the prices have went down. Spend some time over at
www.turbomustangs.com. We have guys that built their own systems in the low 11's to mid 10's with stock headed, stock camed motors. Granted there has been some porting and bigger valves put in the heads, but I don't see any stock headed & camed supercharged motors in the 10's.