Ok, I've been browsing around for quite some time and I notice there isn't much of an emphasis toward controlling heat and keeping it as low as possible. This is vital for the longevity of the engine.

I was wondering what methods there are to control temperature from intake to EGTs.

Things that I know:
Oil coolers
Bigger radiators
Water/N20 injection (I think this is the poorest way to do things, just a big bandaid)
Bigger intercooler

What else is out there?

 

Heat wrap
They also sell a wrap for your intake

 

From your list, the oil cooler will be the best help for temp reduction. Another way is:
Improved convective cooling is another forgotten way of reducing heat in the engine bay. A front bumper that allows for more airflow into the intercooler and radiator. Be carefull when upsizing the radiator and/or intercooler, you could decrease convective cooling on these parts and go the wrong way.

 

I can't figure out why this is always left out.

SLIM/HIGH FLOW FANS!

Seriously guys. You can't expect stock fans to make an aftermarket radiator work any better. Stock fans=crap. Low flow, bulky crap.

 

Ahhh +1

 

If you have a great Inlet, you also need a great outlet.

cut/vent your hood..

vents near the front of the hood will help air flow in/out of your radiator.

vents near the back rear will help aleviate heat issues from your turbos/general heat dissipation of the engine,

and vents near the rear of the hood will help with plenum cooling issues-

the stock radiator is decent, just need decent acess to moving air- +1 on the new hi-flo fan idea.

if you cant / wont cut holes for oil/pwr steering coolers, i suggest you get coolers with builton/clip on fans and at least give them an exit vent from the fender well or the undertray..

but above all, keep your stock fender/undertray linings!! they work better at flowing air out of the engine bay at higher speeds.

 

You are so right. At the last road race I went to for Z's, I was the only turboed Z without an overheat problem (since it was 88F). All I had on it was the oil cooler and the vents cut in the hood.
After the event - a bunch of people are going to cut their hoods now and I thought I had a cool hood for no $. Now everyone will have it - oh well.

 

Our stock fans are actually pretty robust, IMHO. Large dual fans, a VERY good seal between the shroud and the rad, and variable speed control. They flow a really good amount of air.

 

MoonDude - Picture please.

Cheers Amy -

Shariff.. ChimMike could be helpful to post a picture of the newer/more capable fans.

 

Here you go John-

https://my350z.com/forum/showpost.ph...4&postcount=78



however, i believe Mooddude would get even better cooling if he put a little lip in front of the holes to allow the air to go up prior to the hole, to suck air out of the engine bay a little better-

 

Thanks Cheston..

Mooddude did a A1 job on the hood vents. I like the shape and location.

With an aluminum hood the lip in front of the vents would create a low pressure zone that would create suction. Not to say that it would SUCK

But Profile changes are forever. Tony's working on a 1969 Corvette for his neighbor. It has a Shaker Hood and Flared fenders. Kills the resale value, but it does date teh mod's done. The owner will keep the car with the flares as
fiberglass replacements Hood, 2 fenders and a rear cut would be about $5000 to put it back to stock.. The guy will keep it forever..

Back to Moon Dudes Z, a very effective mod. Soon everyone will want it. I am 100% sure the TN crowd would benifit the most.

Cheers Amy -

Cheston - My 1996 Maxima needs some moding to keep it interesting. Thinking about Freeway Flyer stuff. Stillen BBK and a few JWT ECU mod's

Email me. John@amycroft.com

 

doggonit!! i am just getting ready to do that to my hood and wanted to be the first, so i have been quite about it, lol. well atleast now i can see what it looks like done looks good.

 

ya i do agree it won't be easy to improve the stock fan set up. but the fans will only help at low speed anyways. won't do anything for guys heating up on the track, well atleast till they stop.

 

What consideration needs to be made with regards to water coming in when it rains?

 

.....http://www.evanscooling.com/main21.htm

 

do you guys know any place in SoCal would do a custom hood?...I wanna to change out mine...the Stillen one (damm so fugly)

 

I agree, I had a black magic fan and it solved all my problems..

 

This is what I'm puting in. This stuff just plain works. No more instant boiling for me.

 

I haven't heard of anybody replacing the fans...although it sounds like a good idea.

What are the stock fan dimensions: Height, Length, and Thickness?
What is the CFM of the stock fans?

 

I took a good look at the suckers while I was installing the TN kit.

For the size of the stock fans, they SHOULD flow 3kcfm. However I doubt they do half that. They're probably 3.5-4" thick.

I think the Koyo slim rad and a custom made shrout out of aluminum with a pair of 1300cfm fans would create an excellent cooling system, combined with vented hoods, etc.

I also think it would be good if someone were to custom make a set of bottom trays from sheet metal to create a low pressure area at the rear bottom of the engine compartment. This would be extremely beneficial to those who are turbocharged as well!