Help! I need info on intercoolers. Whoever bought TurboNetics
also bought Spearco to establish a monopoly in the after market
turbo system business. They doubled the price of the core I was

planning

on using to $480 (ouch!) which coincidentally is the retail price of
one Mitsubishi 3000 Gt twin turbo intercooler. It has two.

What are the sizes and junkyard prices of Volvo, Saab and Buick
turbo intercoolers?
Paul Lamar

Greg Richter wrote:

Take a look at the Howe aluminum radiator cores.  They are cheap

enough,

and the larger ones make pretty good intercoolers.  HKS has some lovely
stuff, but they are even pricier.

I'm using a Mazda Turbo II intercooler in the usual duct and plenum
arrangement and am quite happy with it.

What kind of temps are you expecting out of the intercooler?  That

would

help me a lot in steering  you to some junkyard, er, previously tested
componentry.  Drop me an email direct if you like, and take a look

at my

Web site for a pic of the coolers I'm using.  Hey, they work ... :)

-GR

Cozy N722 -- Mazda 13B
Turbo  http://bluemtn.com/greg  -or-  http://bluemountainavionics.com

Thanks Greg. I would like to keep the intake air temp below about 130
degrees F.
What are you seeing?

Paul Lamar

Greg Richter wrote:

At full throttle it creeps up into the 120s.  Highest I've seen so far was
135 degrees F.  I am moving the POV to the intercooler header tank to vent
hot air _before_ we cool it all.  That'll fix that problem, I trust.  The
Turbo II unit is relatively decent size, and seems to work well.

-GR

Thanks Greg. This is the kind of hard info we need on our turbo charger
efforts. I take it POV means Pop Off Valve. Do you think I need one
with the stock turbo built in waste gate?

I am getting a quote from http://www.ndm-heatexchangers.com/ as we speak
on this design. The long intake tubes will be welded to the outlet header.
The cell size is stated to be 1/2" by 1/2" on the drawing but I specified
1/4" fin spacing instead of 1/2". Any suggestions for improvements?

Paul Lamar

Greg Richter wrote:

The pic looks about right, I'd have to do some calcs to be sure, though.

The Pop Off Valve is a really good idea to keep from breaking things if you
close the throttle suddenly.  That's the traditional purpose for 'em, and I
like the thought.

I'm using mine in lieu of a wastegate, to save weight and noise.  The
GReddy unit I had (and cut to bits) is being replaced with a lighter, more
adjustable HKS unit this week.  Induction temps are a little higher than
I'd like and relocating the POV should drop them 8-10 degrees.

-GR 

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