Short question; Turbo sits next to the MC's very front, the nose of the MC if you will.

During normal driving it gets the nose of the MC HOT. but not TOO hot to touch. Im worried under boost however, that it may get even hotter. How HOT is too HOT? keep in mind its just the NOSE of the MC. the reservior sits back a good 6" from the nose, and stays pretty cool.

 

i'd worry more about the brake fluid getting too hot before anything melted. i'd guess it'd have to be over 300*F to melt. you could always make a shield to go between the turbo and MC.

 

If worse comes to worse, im sure you could fabricate some form of heat shield. Much along the lines of a starter's heat shield, im sure something could be coined up.

 

Ok ok, suppose Ive already done this. The downpipe literally touched the heat shield, that touches the tip of the master cylinder. it doesnt right now, but im sure if the motor torques enough it will. just giving you an idea of how close it is... but thats the only part thats close, the tip of the MC. the rest of the MC is safe far away, because the downpipe makes a sharp downturn and gets away from it all.

the fluid is most def not getting that hot in the reservoir, but at the very tip of the MC I think thats where the fluid for the front brakes go into the proportioning valve. the valve thing is also pretty far from the downpipe, even though its right below the MC like i said the downpipe makes a sharp turn right there to avoid the brakes all together.

lets say that after a hard run the tip of the MC gets NEARLY too hot to touch, or just about. is that too hot?

 

Well put it this way, ever drive around town for 20 minutes, pull your wheel and grab the caliper? Bet you burn your hand more from the heat on the caliper then the turbo heat will bleed to the MC. Of course I wouldent want to introduce any extra heat to a system (master cylinder) that has rubber seals that arent designed to take great amounts of heat in cycles unlike other brake components (calipers) that can take heat will no short term effects.

Another soloution besides the sheild would be to duct air to that area.

 

thats a VERY VERY good idea. I think ill come up with something like that, thanks again guys.

 

yeah man, you definatly want to protect the brakes system. if i can remember, there should be a decent amount of room to put some sort of ducting up over there. if not, a custom hood scoop would work wonders

hmmm what else. perhaps if you cant figure something out you can make a duct from your rad fans to up over there? that isnt really a good solution, but better than nothing.

 

Im thinking ducting from Fender towards MC... or something. when i get back from orlando ill check it out. worst comes to worst, hole in hood small cowl would do the trick, but would ruin my sleeper effect....

 

Well a small louverd area really wouldent stand out too much.
So is there no possible way to move the DP an inch? Your going to have to snap a pic of this for my brain to kick into OD.

 

a pic you say

 

that bad huh! oh well. im thinking of re-doing the manifold to move the turbo forward a little... im just not so happy about having to cut it all up again. maybe ill make a new manifold and just swap it in.

for now, i like the hood idea i have a spare hood in the back, and a cowl hood im thinking of putting on, although i dont like losing the sleeper effect thats oh-so tasty right now. man the look on people face when i come away from lights and my car goes "whirrrrrll bzzzzz" from under the hood. well, i have open downpipes this week so...

what should i use for louvers in the hood? cut the metal and bend it up maybe? make like a sharks finn?

 

ttt

 

use a louvered hood and make the louvers functional on one side

 

Thats what we needed a nice little pic.

Just another idea, fNord sells covers for diesel applications to cover the clutch slave and a few other components to keep heat out. Most dealerships stock the covers even if you move the DP an inch towards the front you might hit up fNord, Cat or Int for a cover that will slip over the MC just to be safe and of course speed shops all sell fuel/brake line slevees.

 

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thanks again SSC, i will do this and wrap the downpipes too.

 

I'd be more worried about the fluid bubbling than the MC melting, same reason to watch your brake lines when installing hedders or routing exhause. Some good ideas above though!

 

you know, i bet you could grind a little bit off the end of that master cyl........ then make a heatshield.