it is a 85 mazda glc, or should i just figure out hot to do a 323 turbo swap?
2006-07-28 09:34:32 · 5 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
What you have to change is dependent on whether you have a draw-thru or a blow-thru system. In the draw-thru system the carb is before the turbo, on it's inlet side. In this application your carb is still working under the vacuum principles that it was normally designed for. Changes here would be relatively minor. The power circuit of the carb would have to be modified to deliver more fuel. This is usually accomplished be changing the fuel metering jets inside the carb. Also you may have to modify the fuel system to deliver more fuel. this might entail a larger line from the tank, or a higher volume (not pressure) pump. If you go to a blow-thru system the carb is on the outlet side of the turbo and the carb is operating under pressure which carbs are not designed for. Therefore the modifications would be extensive. And after hundreds of hours you might find that your particular carb has inherent design limitations that prevent it from being operated under pressure. To minimize your head/heartaches, find a donor car with the turbo set-up you want and transfer the parts to your car. Can't find one, use aftermarket components to create a draw-thru system for your car. Forget the blow-thru system as cost and complexity will drive you insane, broke or both.
2006-07-28 12:43:26 · answer #1 · answered by tepidorator 3 · 0⤊ 0⤋
The swap would be easiest. If you aren't interested in that, I hope you have some good fab skills. The 80's vintage GM turbo setups were a draw through design. The fuel/air were drawn through the carb, compressed in the turbo and then into the engine. This might be the best way to set up your application. I think you will have a hard time finding a shop that will modify your carb to be able to work in a blow through system. Keep in mind that you will have to build a custom exhaust and fuel system just to get started. If it were mine, I would find a complete donor car with the engine you want so you will have all the factory parts available. Hope this helped a bit.
2006-07-28 18:45:06 · answer #2 · answered by Jason z 2 · 0⤊ 0⤋
I've tried to use a carb with a turbo before. Didn't work out, but I had a pretty screwed up carb to start with. You will need to modify the fuel pump or fuel pressure regulator so that the fuel pressure increases with the boost, rejet the carburetor, and readjust the ignition timing.
Putting a B6T in there might be easier... well, maybe not.
2006-07-28 16:40:40 · answer #3 · answered by Mad Scientist Matt 5 · 0⤊ 0⤋
When GM came out with turbos in the mid to late 70s & early 80s they were all carborated! Edelbrock has an after market computed injector system [ don't know about for jap cars though] that does an impressive job! They also have turbos available and in order for their product to be marketable they offer mucho tech advice to go with their stuff! I know that I'm too old to still enjoy horsepower [possable?] but .....................jap? what's the attraction?
2006-07-28 17:21:42 · answer #4 · answered by Gary Gearfreak 3 · 0⤊ 0⤋
for a turbo you dont need to change anything the turbo goes into exhaust sysrem if it was a supercharger you would need to change a lot of things
2006-07-28 18:45:42 · answer #5 · answered by firefightingexpert 5 · 0⤊ 0⤋