A/R T3 and the CIS fuel injection system.
 

A pair of A/R T304's should be able to produce 12psi on a CIS V8? right?

I know not to buy an ebay turbo, which manufacturers should I be looking at?

That's not a whole lot of information. You'd need displacement, specs on the turbo's etc. A/R Should have a number with it also...

Perhaps I'll rephrase the question.
which turbo do I need to produce 8-12psi in my 4.5 K-Jet. either one or two units.

Garrett is probably the best manufacturer to start with...
Their website is chock full of technical stuff from basic to that which will give you a headache....
Best site for self education...

I would think that a pair of T3s would be plenty for street pressure, but as those above have said you really need to do some more homework. Not sure how familiar you are with turbo systems, it may be worth it to pick up a book. I bought this one and read it cover to cover....great info in it and serves as a good reference if you need to do some math:

http://www.amazon.com/Street-TurbochargingHP1488-Installation-High-Performance-Turbocharger/dp/1557884889/ref=sr_1_1?ie=UTF8&s=books&qid=1282585571&sr=8-1

good advice above :) There's so much to learn & 'need to know' information before you choose what turbo specs you run.

Twins are best suited for V block engines that's for sure! A single will produce similar power but are made more for straight block engines.

T3's on a V8 are too small. There is little point spending time & money on little gains. The T3 size were matched to the 3.0L M103 & M104 engines with the Turbotechnics & Mossleman twin turbo kits. They are not a particularly large turbo. Great for low end punch but......what are you attempting to achieve with the money you will be forking out? That is the question you need to ask first ;)

the turbo technics twin turbo for 3.0l and 3.2l i6 used two T2 turbos, wich will push 10 to 12 psi on the i6. upgrade for that seems to be a pair of t28.

the larger t3 turbos would be a start point for a v8 imho. ford cosworth used t3 on the two liter rs500. bigger turbos are also avalible;)

gees....:eek:.....T2's! My bad. Well T3's will be OK I guess but all depends on performance application your after. OP is pretty vague but hey......that's what questions are for nick hey :)

yes the t2's are quite small, but the turbo technics install make the 3.0l i6 engines behave like a big displacment v8, in that the power is instantanious, and linear all through, i never experiance lag, my boost/vac gauge goes straight to zero vac as soon as i open the throttel in any gear, at any revs, and then straight into boost. they do lack a bit at the top end though, i had mine running at 18psi, but the intake temps were way too high, nocked it back to 15, then 12, wich i am happy with now, stable afr and good performance

i am going to upgrade to t28's 'soon' spare cash allowing.

Yeah, I've been putting LOTS of thought into it..My brother has a pair of CT25 Toyota turbos, I'm kind of thinking they'll be on the small side. I'm not looking for anything wild, just a little bit of moderate, streetable, punch. :D

I think having a small turbo on a large engine will make for an awfull ride. u will have the low down punch for abt a couple of thousand revs and after that the engine will simply start losing power. The samll turbo(S) will act as pluggs on the exhaust manifolds the engine will refuse to rev to its stock rev limit.

it is important to have a matched turbo size to the engine, and then if ur only looking for a small power increase run it at low boost.

So then what I'd need is a turbo or pair (combined volume?) of them that should support upwards of 5.0 litres?

I still have lots of reading to do:o

Jay, perhaps folk are not aware of the performance benefits of running large turbos @ lower boost levels, especially when on stock compression applications. This, from what I gather takes time for people to cotton onto.

Modern large turbos have the versatility built into them, ie: compressor housing/wheel ratios that deliver performance down low in engine rev range whilst working @ their best up in the higher rev ranges. These M103's, unlike Honda's for example, work best up top.

I understand where nick.ged is coming from. My contention stems from where the efficiency range of our straight six engines lye? What you do to get the most response out of these engines? All the way through the powerband, not simply down lower :)

You are on the right track PanzerSD ;) You need to understand what makes these engines rock :cool: That imo is what it's all about!