A 3.4 DOHC Build then... F40 Turbo (Page 21/57)
Joseph Upson JUN 26, 08:09 PM
Having installed the small 7"cooling fan that came with my system on my heat exchanger recently, I can say don't waste your time except for the possible benefit due to your exchanger location. Either my heat exchanger due to size 26x7x3.5 is efficient enough surface area wise to negate it or it just isn't effective. I noticed absolutely no improvement in idle air temps and unplugged it to eliminate the amp draw, as long as the car is moving the inlet temps are pretty stable ~10 deg above ambient, changing slightly with the ambient temps at cruise speed. Also my coolant temps are pretty stable at cruise running right at 100 deg above ambient.

I would be a little concerned about condenser temps with the exchanger that close to it at idle. I've watched how easily the gauge pressure climbs on the A/C high side with the fan running at idle on a 90 deg day, I suppose 117 deg ambient temps will be just as merciless. My exchanger sits pretty far out from the condenser so at a stand still the air pulled by the fan is from the gap between the two exchangers rather than through the intercooler exchanger and then the condenser.



[This message has been edited by Joseph Upson (edited 06-26-2013).]

Will JUN 26, 08:51 PM

quote
Originally posted by Fierobsessed:

I found that once I removed the shroud ducting from between the radiator and the condenser



*THAT* will affect your engine cooling more than anything else you've done. The air's path through the various heat exchangers MUST be ducted for them to work in a Fiero.
Fierobsessed JUN 27, 02:30 AM
Yeah, I agree, I plan on cutting them up and refitting them between the condenser and the radiator. That's about all I can do with them. I'm thinking about powering up the fan, and seeing how much of an effect installing the FMHE has on the airflow coming out of the radiator. It's sitting still that is the only time I am concerned. The fan is ECM controlled, so I can add programming to turn on the fan in ways that benefit a turbo car too.
BV MotorSports JUN 27, 09:15 AM
I was thinking about my setup last night and I am curious as to what you are going to to do with yours. I like how ericjohn was running hard-lines for the w2a system. I need to redo mine. Whodumbass has mine run on top of the coolant pipes. LOL interheater!
Joseph Upson JUN 27, 10:31 AM

quote
Originally posted by BV MotorSports:
I was thinking about my setup last night and I am curious as to what you are going to to do with yours. I like how ericjohn was running hard-lines for the w2a system. I need to redo mine. Whodumbass has mine run on top of the coolant pipes. LOL interheater!



Only if your heater lines are not insulated and even then it's not likely to cause much of a problem given the small contact area. Just be sure to use non corrosive metal lines of good diameter.
BV MotorSports JUN 27, 04:58 PM
Hardlines? Nah, he used all rubber! Its madness I tell ya.
Fierobsessed JUN 27, 09:44 PM
I've been thinking about using 1/2" EMT for the lines going under the car. It's cheap, easy to bend, galvanized, and the diameter matches my pump, the Intercooler and the FMHE. So I think that's what I'll do. Put the tank back in, put some pipe in on either side of it then put the under plate in for support. Hope it fits!
BV MotorSports JUN 28, 12:29 AM
Did you see where I asked you to make me one of your LQ1 dipsticks?
Joseph Upson JUN 28, 01:00 AM

quote
Originally posted by Fierobsessed:
I've been thinking about using 1/2" EMT for the lines going under the car. It's cheap, easy to bend, galvanized, and the diameter matches my pump, the Intercooler and the FMHE. So I think that's what I'll do. Put the tank back in, put some pipe in on either side of it then put the under plate in for support. Hope it fits!



I wouldn't use any metal line aside from aluminum here unless you intend to use an anticorrosive coolant instead of distilled water. I used some sort of galvanized tubing from Home Depot and found it to be very unforgiving if you are not strict with water purity. It nearly ruined my heat exchanger and intercooler with scale after a temporary contamination with tap water after a leak, while I thought I had a little time to get around to flushing and refilling. Then again GA water could have been exceptionally hard. I don't recall what type of pump you have but generally you should use a high pressure pump for 1/2" diameter line/hose covering that distance. I doubt my bilge pump would move water very effectively through a tube diameter that small and use 3/4" as a result.

Hudini JUN 28, 02:28 AM
I use the Bosch Ford Cobra pump and normal 50/50 coolant with rubber lines. Works like a champ so far.