twin turbos on 330's super budget build Which turbo's?

Reply Subscribe

Thread Tools

02-08-2019 | 04:36 PM

phughes69

Thread Starter

Platinum Member

Joined: Dec 2001

Posts: 2,125

Likes: 169

From: St. Clair Shores, MI

twin turbos on 330's super budget build Which turbo's?

I want to use ebay internal wastegate turbos on my 330's The engines have the larger oval port heads. Im going to mount them to Gil manifolds. I want to do a low boost (5 lbs, maybe 7 lbs) no intercooler. This is mainly for the WOW effect at the dock. Im am thinking that 500 hp is a safe number on the stock blocks. Ive looked at HX35's but not sure if they will even spool at 5psi. Anybody have suggestions from experience. Id like to do internal wastegates so I dont have to deal with that plumbing. This is going in a 1978 30' Scarab.

02-08-2019 | 05:06 PM

getrdunn

Registered

Joined: Feb 2009

Posts: 8,356

Likes: 1,515

From: NW Michigan

Easier way to make 500 hp with 454/330's and less expensive and headaches. Just my opinion.

02-08-2019 | 05:14 PM

phughes69

Thread Starter

Platinum Member

Joined: Dec 2001

Posts: 2,125

Likes: 169

From: St. Clair Shores, MI

Yes, I know I could do heads, cam and intake, but it doesnt have the same effect when you tell someone you have twin turbos

02-08-2019 | 07:33 PM

dsmawd350

Registered

Joined: Aug 2012

Posts: 620

Likes: 7

From: Cincinnati ohio

What affect? Laughter that you have a twin turbo setup and only make 500hp. Sell the motors and buy stock carbed HP500

02-08-2019 | 08:26 PM

phragle

Registered

Joined: Apr 2006

Posts: 10,042

Likes: 712

From: Toledo Oh

how are you going to keep the turbos cool??

02-08-2019 | 08:39 PM

14 apache

Platinum Member

Joined: Apr 2005

Posts: 2,150

Likes: 15

From: Northport N.Y.

Did you put forged pistons in it? Mercury uses forged everything in a 365hp. I don't think it will live. Specially no intercooler.

02-09-2019 | 01:15 AM

phughes69

Thread Starter

Platinum Member

Joined: Dec 2001

Posts: 2,125

Likes: 169

From: St. Clair Shores, MI

I only want to make 5 psi, so I don't need forged pistons for that. A pair of hp500 would cost more than a pair of turbos

02-09-2019 | 01:20 AM

phughes69

Thread Starter

Platinum Member

Joined: Dec 2001

Posts: 2,125

Likes: 169

From: St. Clair Shores, MI

Quote:

Originally Posted by phragle

how are you going to keep the turbos cool??

im going to make water cooled heat shields very similar to the Rajays on my other boat

02-09-2019 | 09:51 PM

getrdunn

Registered

Joined: Feb 2009

Posts: 8,356

Likes: 1,515

From: NW Michigan

Like 14 Apache mentioned. Remember the 454/330 pistons are cast as well as crank and 3/8 rods. My guess is you'll have nothing but headaches.

02-10-2019 | 12:36 PM

#10

Precision

Registered

Joined: Nov 2008

Posts: 595

Likes: 97

From: Hudson, IL

Quote:

Originally Posted by phughes69

im going to make water cooled heat shields very similar to the Rajays on my other boat

I can provide you with water jacked risers, and water jacketed internally gated turbine housings for GT30, 35, and 37 If that will help you out.

Last edited by Precision; 02-10-2019 at 12:55 PM.

Reply Share

First
Prev
1 / 3
Next
Last