Offshoreonly.com - Roots Blower Sizing

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SB	10-27-2014 11:12 PM

Gotchya.

A molded in swim platform over the drive and pipes sure as hell would be nice for this huh ? LOL.

the deep

10-27-2014 11:16 PM

Quote:

Originally Posted by SB (Post 4210090)

Gotchya.

A molded in swim platform over the drive and pipes sure as hell would be nice for this huh ? LOL.

Maybe I could lag down a piece of plywood off the stern and call it a bustle . lol

rivermonkey

10-29-2014 08:47 PM

Be sure to use marine grade plywood or it will never last :)

KAAMA

11-22-2014 10:28 PM

Quote:

Originally Posted by MILD THUNDER (Post 4209119)

Thanks Mark.

As for Mikes 10-71 build, its a build he did for a buddy of ours. 522ci AFR 315 heads, 1050 carbs, rmbuilder cam, about 8.3:1 i think? At 8psi it made 930hp. 10psi 985hp.

Ok thnx for the response Joe,---at what RPM were the 522's making peak power?---also, were they hydraulic or solid cams?

MILD THUNDER

11-22-2014 11:59 PM

Quote:

Originally Posted by KAAMA (Post 4223788)

Ok thnx for the response Joe,---at what RPM were the 522's making peak power?---also, were they hydraulic or solid cams?

These were Bob Madera high lift hydraulic roller cams with LS firing order .

mike tkach

11-23-2014 10:27 AM

Quote:

Originally Posted by KAAMA (Post 4223788)

Ok thnx for the response Joe,---at what RPM were the 522's making peak power?---also, were they hydraulic or solid cams?

i don,t have the dyno sheet,s in front of me but i think peak hp was around 6000 rpm.

Black Baja

11-23-2014 01:18 PM

Quote:

Originally Posted by MILD THUNDER (Post 4223815)

These were Bob Madera high lift hydraulic roller cams with LS firing order .

I think Bob really hit the nail on the head!

MILD THUNDER

11-23-2014 04:47 PM

1 Attachment(s)

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.

KAAMA

11-23-2014 09:27 PM

ok, thnx guys :)

MILD THUNDER

11-23-2014 09:34 PM

Mark, with a Littlefield 10-71 and blower shop intercooler, the air intake temps were about 110-113* in the intake manifold. Going from 6lbs of boost to 10lbs, there was almost no change in temps.

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