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Is that turbo also mounted to the block? If not i doubt that pipe would hold it up for long... WARDAT's J-pipe setup goes down under the engine mount and bolts to the hreaded holes in the front of the block for support, its not particularly thick steel but its not going to break.

Also a long piece of thin pipe like that would lose too much heat would it not and be very inefficient at spinning the turbo... Dont turbo's work off heat as much as gas flow?

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as according to the genearl gas law, as temperature decreases so to does the volume of the gas (at a given pressure)

therefore, cooler the gas, the lower volume of air through the turbine. hence a less efficeint turbo!!!

haha looks like i might just be a sucker for buying buggered turbos then. What you said does make sense. Just make sure you buy a good turbo that spins freely i guess. Whats the most fuel pressure people have run on a needle and seat and what carb? As a budget approach running standard 7psi boost would there be a carb/ needle and seat cabable of holding 10psi fuel pressure negating the need for expensive rising rate regulators and fuel pumps/return line etc in a blow through design. If a new gasket kit is put through the carb and sufaces are flat they should seal ok with just a hat and lowish boost.

here you can see how the J-pipe bolts to the block for support:

Yep Thats what I wanted to see!! Brilliant & so simple..

Ok to dig up the suck thru tpoic again - who knows which (factory) turbo was released with an in-built carbon seal?

I have a pair of RX7 13B twin turbos and rumor has it that they have carbon seals... The big one looks like it'd go nicely on an A12.

These are cheap as on ebay - nobody wants them (I got them with a motor I bought for my RX2 and I didn't want them either )

I'll try and get some data on them...

ive also heard that the rx7 turbos are carbon sealed

Here is another budget buildup.