hi has anyone tried a turbo with a hyper pak intake how well would it work? if someone were to build the same hyper pak engine in slant sickness article and install a turbo what would the best turbo to use on this application

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yo yo i be bill

The point of the long runners on the hyperpack manifold is the "ram" effect that gives a little boost to the incoming air-fuel charge. That would be kind of pointless with a turbo or supercharger since the turbine is supplying the boost. It would probably work but I doubt that it would be any better than a Clifford or Offy short runner manifold.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

I will have to dissagree on it being piontless. It would be very much helpfull with a turbo to run a HyperPak. I am not sure how they would work with a carb(blow-tru) but with EFI they would be great. Running a carb & turbo on a Hyper Pak I would be consirned about fuel distribution. It might work, it might not. As far as the intake itself & turbo It will still effect the power curve even though you put a turbo on it.

As far as turbo, it depends on what your after. IMHO for most people a GT61 or GT35 ( both are the same thing really) would make great all around turbos that would could make up to 600hp, but still be very responsive & work for somthing that is a driver/weekend racer car. You could probably get around 350 to 400hp on pump gas and low boost (around 15psi) with the ability to put race fuel in & get the rest on high boost. You would need something like a 2500 to 2800 stall, depending on if the turbo was BB or bushing type.


If you wanted something that you could run a bit of a higher stall (say 3200) but still be streetable but make more power a GT67 would work nice. Its not going to have as good a response, but if you get a Ball Bearing turbo it is still going to spool quick enough to make for good response on the spool. But the GT67 will make around 750hp on high boost.


One of the big mistakes many make on turbos is going to small. To big is bad to, but not in the same way. To small a turbo leads to pinging & tuning problems. To big leads to no power except when you have the RPM's up on the engine.

Jess

I am going with dakight on this one with a turbo you build boost and the quicker you build boost the faster the power comes on. A shorter runner is closer to the head and should build boost quicker just a thought. Besides what intake you use is a minor problem. Turbo exhust manifold is a problem unless your a real good metal fabricator where are you going to get one for a Slant. If you use a Hyperpack with fuel injection what valve body are you going to use. Plus how are you going to plumb that up with a Hyperpack intake. We are building a turbo engine and to start with use a Clifford intake and a blow thru carb. Going to do R/D work for James Jaggers. We are trying to put together a street package that is affordable for the street. Thanks Ron Parker



Jaggers Fabrication Slanted Attitude Dart

If you're worried about instant boost, set it up with a short burst of spray at WOT. Spray it for a couple seconds and turbo lag is a thing of the past.

While a Hyper Pak manifold would look cool, I think it would be a nightmare to package with a turbo on a car.

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Official Cookie and Mater Tormentor.

The EFi route would work, then have to plumb the TB's to come in from the sides (like the 2 side drafts to standard 4 barrel adaptor made for street rods)... The problems are getting a good casting of the Hpak intake, the price of the intake (it's double the price of the offy short runner or so), and the intake does have some problems with 'reversion' (cam choice and blow through carb would be highly speculative, you could 'split the plenum' and change the reversion window and change the range at which the ram effect came in too...).

The intake was designed to cause ram effect at about 3000-5500 rpm tops (for me this is fine for a 'strip/street' EFI NA build if everything is chosen carefully), the blower will just negate the "bonus" power in that range and give the 'bonus' all the time.

Like everything on this board, if you have a mind to try it, don't mind spending some $$$ and time on the learning process then GO FOR IT!


-D.Idiot

"Any one can get from A to B...it's just how you went about it, what you learned, and using creativity on the way that gets you there that makes it much more fun..."

i have a clifford ram flow and a hyper pak intake i got them used from a buddy of mine so i could use either one but i like the hyper paks look. for the exhaust i seen people just use the stock cast manifold and weld the proper flange for there turbo on thats what i would do. id still use a carb setup i cant afford a fuel injection setup right now but its what i want in the future. so im thinking im an going to try it with the hyper pak and maybe the clifford and whatever works best ill keep. either way 300 to 350 hp is enough for me how do i go about picking the right turbo. thanks

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yo yo i be bill