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Old 06-01-2005, 11:24 PM   #1 (permalink)
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Hypermax Pulse Turbo A/R numbers

Hi all.

I posted this on the 7.3 IDI board, but haven't any replies. I'll post here also, and hope for some info.

I just got through installing the older used Hypermax system from Ebay on my '93; man, what a difference! I did purchase new manifold pipes and a new turbo mount from Hypermax, and everything went together fairly well.

I am looking for help from those of you out there runing the current Hypermax Pulse Turbo for the 7.3L IDI. I am looking for the compressor and exhaust turbine A/R numbers for a current production 6.9/7.3 pulse turbocharger. I may have a line on a new in box garrett turbo, that is said to be designed for the Hypermax Pulse system. It has a compressor A/R of .64, and an exhaust turbine A/R of 1.32 with the pulse style "split" or two chamber housing.

Any info would be a big help. It is being held, but I need to let the owner know soon, as there may be another interested party.

Thanks,

Bill
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1993 F250 4x4, Extended cab with a 7.3L IDI, 3.55 axles, 5-speed manual, Hypermax Turbo, 3.5" Hypermax exhaust, No soup bowl, a K&N filter, and a RDT. 162,000+ miles and counting.
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Old 06-02-2005, 01:38 PM   #2 (permalink)
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Re: Hypermax Pulse Turbo A/R numbers

Bill, contact Huff on this board. He's the guy with the A/R numbers floating around in his head.
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Old 06-02-2005, 02:51 PM   #3 (permalink)
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Re: Hypermax Pulse Turbo A/R numbers

Thanks for the reply, Mel.

I went ahead and bought the turbo; got a great price on it. I just found out via email from Hypermax that the current pulse turbo numbers are compressor A/r .7 and turbine A/R 1.15.

The turbo that I am purchasing (Ebay) has a compressor of .64 and a turbine of 1.32. OOPS!

I have posted over on the 7.3 board to see if anybody knows whether that combination can be run safely on a '93 7.3L IDI, and if so, how it will affect turbo preformance.

Thanks,
Bill
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1993 F250 4x4, Extended cab with a 7.3L IDI, 3.55 axles, 5-speed manual, Hypermax Turbo, 3.5" Hypermax exhaust, No soup bowl, a K&N filter, and a RDT. 162,000+ miles and counting.
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