Roots Blower Sizing

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05-15-2015 | 04:39 AM

#121

sutphen 30

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From: taxachusetts

Quote:

Originally Posted by ICDEDPPL

What about idle quality with such a big blower..

efi and whipple and it will idle at 850rpm.even w/ massive wheels.

05-15-2015 | 08:23 AM

#122

ICDEDPPL

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From: Chicago

Yup, with the bypass valve mikes idles like a dream.

05-15-2015 | 08:47 AM

#123

Cole2534

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Joined: Jun 2012

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From: OK CIty, OK

Am I the only one that thinks the Whipple website isn't very helpful?

05-15-2015 | 10:16 AM

#124

Unlimited jd

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From: Taunton Ma

The tech line is just as bad

10-03-2018 | 01:48 PM

#125

14 apache

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From: Northport N.Y.

Quote:

Originally Posted by MILD THUNDER

I have a copy of the dyno sheet here. Actually we never did see the HP peak. But, at 6000RPM, they made 964HP. At 6500RPM, 985HP. The torque was outstanding though, from a 522ci engine.

was this on pump gas or race fuel?? Thanks

10-03-2018 | 01:50 PM

#126

MILD THUNDER

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From: chicago

Quote:

Originally Posted by 14 apache

was this on pump gas or race fuel?? Thanks

93 octane from the shell station down the street

10-03-2018 | 02:40 PM

#127

F-2 Speedy

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From: Midwest & T-Rock

thats pretty damn good for a 315 head and a small CID engine

10-03-2018 | 03:02 PM

#128

MILD THUNDER

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From: chicago

Quote:

Originally Posted by F-2 Speedy

thats pretty damn good for a 315 head and a small CID engine

thats the beauty of forced induction ..heck look at the outputs of a modern turbo diesel. Most arent even barely over 400 cubic inches .

10-04-2018 | 01:54 PM

#129

RBeyer

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Joined: Nov 2003

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From: Antioch, IL

Quote:

Originally Posted by MILD THUNDER

I'll start with the 174 B&M. This is a straight, two lobe, teflon tipped supercharger. It's primary introduction, back in the 1980's, was for low RPM, low power smog era 454 Tow engines. This blower worked very well on a low rpm engine, that was simply looking to add a little more grunt down in the idle to 4000RPM range. It worked well in that application. This blower utilized a single carb setup. Was also used on the old Hawk Marine 525 engines. This blower should be limited to about 5lbs of boost on a 454ci marine engine, if it must be used.

So this is my exact setup. I have a 174 on a Hawk 525. What would you suggest to increase 100 HP.