I have 2 turbo mustangs and I can't imagine trying to road race them. The power comes on pretty quick at 3k. Also there is a considerable amount of heat even if you have everything wrapped. I am no expert but I wouldnt be my combo of choice for road race car.

 

I'm road racing a turbo car, but it's a Thunderbird TurboCoupe. I can't imagine trying to keep a turbo V8 cooled and together. At the LeMons race at Gingerman there was us, a 2.3t Mustang conversion and an XR4Ti (also 2.3t). We were running 9 psi and didn't have any problems. The other 2 were both running 15 psi (the XR4Ti without an intercooler) and both of them blew head gaskets.

steve

 

water cooled turbo?

 

nope, master power t70

 

thats what im thinking. i started my build thinking i was just going to build a spring struts car but im going deeper and deeper into brakes and suspension. i might end up ditching the turbo kit now.

 

Ernesto Roco had a pretty insane turbo setup on his AIX car. I want to say I read they ditched it since it was problematic, but don't quote me on that.

 

i think it's possible but would take some creative tuning to take out allt he nasty torque out of the mid range

 

Anything is possible, it just adds a lot more complexity to the project. Read $$$$$$. I believe the last 2 AIX national champs were running turbos. Here is the 2010 version.

http://www.youtube.com/watch?v=KC1aRHekq8Y

 

griswalds car is insane. is his a rear mount like roccos?

heres a video of ernesto roccos car with a good shot of the turbo mounting.

http://www.youtube.com/watch?v=jrql_K4DBow&feature=related

 

I would not do it with a non water cooled turbo that is supported of the manifold. But support it & water cool it & I would be (am) tempted.

 

Paul Faessler from Paul's Automotive Engineering runs a rear mount turbo setup with a 393W stroker using a Dart block. He won the AIX nationals in 2008 at Mid-Ohio. His shop does all my tuning and machine work. I saw this car at Mid-Ohio and on his dyno and let me tell you he is making some very serious power but runs a monster tire/brake setup. His car is a FULLY PREPPED race car though.
http://paulsautomotiveengineering.com/racing.html

 

You should have seen Roco's first race with the turbo setup. He almost passed out from heat exhaustion created from the rear mounted turbo. So I would say they get pretty hot.

 

why not run a very low spring in the gate which would allow you to make car more managable in the corners and then run an ebc for another stage for the straights? i have pms in my car which automatically compensates for the increase in boost so theoretically you could even try a momentary switch and use the turbo like nitrous via the ebc...

 

I have been open tracking my Turbo Mustang on the track with 10 PSI boost for the past 7 years. With 500RWHP, my car is very controllable. It is not an on/off switch as some have implied. Sure, if I floored it, the car would become unstable. So I would not "not put a turbo on" if you are afraid it will be uncontrollable. You do need to have track experience and have a car with suspension and brakes to handle the extra HP.

Now the reason why I may not put a turbo on. HEAT HEAT HEAT. I have spent a lot of time and $$$$$ to try and keep things from melting. If there is anything within a couple inches of the hot pipes it will melt. I have melted clutch cables, sway bar bushings, steering rack boots, hoses. The car would run 1/8 mile passes all day long, but put it on a road coarse for 20 minutes, everything gets hot.

I am still having oil temperature problems, but I an not sure if it is related to the turbo. I did an experiment a couple weeks ago and while driving on the road at 70MPH in 4th gear at 4000RPM, after 10-15 minutes, my oil temperature were climbing past 240 degrees. This is without boost. I have a Griffin radiator with a built in oil cooler and it didn't help at all.

I do enjoy my turbo, I just wish I could keep my oil temps below 270 degrees on the track for a full 20 minutes.

 

craig429

what are you using to tune your car with and what timing and a/f do you see under part throttle?

 

I am tuning with a Tweecer (may change to AEM this winter). AFR at part throttle (light load) is 14.7 Closed loop. Timing depends on RPM but it is around a high of 38 degrees. Light load / part throttle timing and AFR is pretty much at stock levels for a J4J1 (Cobra) tune. At WOT 3500 RPM, timing is at 18 degrees (10 lbs of boost).

 

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does anyone here road race a turbo mustang? even open track days?

Yep, it's a blast. Heat is not a big problem with my setup.

 

I love these vague my #### is bigger than yours hit and run posts.

 

I too have considered switching to turbo, I run non intercooled vortech and i have heat problems too!

I considered either making a air/air intercooler for the supercharger or switching to turbo (but underhood temps would go upt ) which is better not sure .

I installed a HUGE oil cooler on my car of a nascar that helped considerably now highest i see is 245 degrees on oil. And i run fluiddyne rad water temps never get above 207. Also cowl induction helped and i cut more holes in the back of it to funnel more air out. And a phenlonic spacer between the upper and lower intake helps.

Really the best setup for road racing is a large inch small block NA engine. But boost is so addictive, and you can get more power and tq out of boosted engine. I have wondered about how the power would come on a turbo engine since the boost comes up fast guess would depend on turbo size craig what size do you use?

Jay

 

I have wondered about how the power would come on a turbo engine since the boost comes up fast guess would depend on turbo size craig what size do you use?
Jay

I was running a T64 and I would have 10 lbs at 2500 RPM. I am now running a T72 and I have 10 lbs at 3000RPM. The T64 boost came up quick, but it was still very controllable. I never felt it wasn't controllable exitting the corners.

 

Sooooooo

you do know that the cowl hood allows air INTO your engine bay not OUT right?:leghump:

 

You would think the name "cowl INDUCTION" would kinda hint people in that direction...

 

Just a quick note. If you're thinking about building a forced-induction road racer and want to run it in American Iron, think again. Effective in 2012, All V8's in American Iron MUST be naturally aspirated. Turbos and blowers will still legal in AIX and on engines with fewer than 8 cylinders.

 

NASA AI has it figured out and has car counts to prove it now if only they'd figure out that AIX skys the limit HP doesn't work. Two cars at Nationals and multiple AIX cars for sale all over the internet, including Ernesto Rocos AIX monster.

 

... if only they'd figure out that AIX skys the limit HP doesn't work...

Well, it didn't work for CanAm, either.

 

I think that NASA does need to have a class with more HP/TQ than AI. Maybe something between the current 10:1 AI rule and the no limits AIX rule. 15:1 or something like that could be very fun and still keep things reasonable.


--Vince

 

Yep. Keep the minimum weight lower than AI, everything else still open, but cap the AIX HP. Dynos are common place at NASA events so it wouldnt take that much more and the AIX car counts WOULD improve and the quality of AIX racing can only get better from its current state.

Much larger more financially stable televised series ALL have hp limits. Put the driver back in the car instead of his $$$$ deciding who wins. JMHO

 

ps: i posted some info and pics in the following thread detailing few changes i made to keep my turbo setup significantly cooler

http://forums.corral.net/forums/showthread.php?t=1257322

 

I found some pics of Chris Griswolds turbo Mustang.
a/w intercooler in the passenger area, heat exhanger in the rear of the car located between the taillights (I'm guessing for the intercooler reservoir).

http://ww.cgracing.com/Build Pictures.htm

what transmission and clutch setup was he running?