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'66FB GT "Slick Guzzo" Upgrade Build-Up

Re: '66FB GT Upgrade Build-Up

"daveSanborn" said:
I don't understand why you'd want to plumb the prop valve into the passenger compartment. Once the valve is adjusted properly..... you'll never touch it again. It's not a line lock that would require ocasional activation. Mount the prop valve out near the master cylinder like 99.9% of the other users to avoid the headaches of plumbing it into the cabin.
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Although Loren has no plans to track the car, I've found the adjustability to be nice on track. As the fuel burns off, the rear gets lighter and can lock up a little easier. I can back out some and keep the brakes about the same. I also back off a bit when I have to run no traction street tires after I burn up the stickies!
 
Re: '66FB GT Upgrade Build-Up

"hivewax" said:
I'm sure it needs to be adjusted if the rear discs get hot or fade due to weather... Just like on the track.
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I don't think heat affects it that way, at least I have not noticed it. It's more a weight transfer thing (my high tech wordy response)

If you have the right pads they won't fade much if any. That's for track usage though, the right pads for the track will never get to op temp on the street.
 
Re: '66FB GT Upgrade Build-Up

Well, I got the adj PV in... looks good. I have to take a picture next time. I also put in a quick fix plastic bottle to the vent hose because it was leaking. I must of overfilled. Does the plastic bottle need a hole to vent at the top?

EDIT: spelling
 
Re: '66FB GT Upgrade Build-Up

Does the plastic bottle need a hole to vent at the top?
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I assume you're talking about the coolant recovery tank?

No. The coolant recovery tank works on a "closed" system. Due to expansion, any "extra" coolant would discharge from the radiator into the overflow tank. As the coolant cools, negative pressure within the cooling system will draw the coolant back out of the recovery tank and into the radiator. No holes in the tank!
 
Re: '66FB GT Upgrade Build-Up

Sorry, I was referring to the rear axle vent tube w/hose to plastic bottle in trunk rigging.
 
Re: '66FB GT Upgrade Build-Up

No bottle is necessary. The end of the rear axle vent tube should have a white plastic "relief valve" inserted into it that will allow air to escape, but not permit water to enter. These fittings are common on 4WD vehicles... such as Jeep Wranglers.... and can be found at most salvage yards/local auto parts stores.
 
Re: '66FB GT Upgrade Build-Up

I'm guessing you're talking about the rear end vent hose. I don't know if a closed system has a drawback, but my catch can is vented with a filter on top.

If you think you need a catch can for the rear housing, don't cheap out now, get one from Shaun!
 
Re: '66FB GT Upgrade Build-Up

"hivewax" said:
Will this plastic relief valve prevent any gear oil from coming out the vent?
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If the rearend vent hose is routed/clipped up to the underside of the body, I can't imagine a situation where 90 wt gear lube would travel that far up. The vent hose is designed to vent air. Fluid shouldn't travel up inside the hose.
 
Re: '66FB GT Upgrade Build-Up

You have much to learn grasshopper, it travels all the way up to my breather inside the trunk while on track!


Not that Loren's ever going to see the track, but it is does happen.
 
Re: '66FB GT Upgrade Build-Up

when i had the 8" rear, gear oil would fly out when i get it up in RPM on the highway. street/track... it happens.
 
Re: '66FB GT Upgrade Build-Up

"silverblueBP" said:
You have much to learn grasshopper, it travels all the way up to my breather inside the trunk while on track!


Not that Loren's ever going to see the track, but it is does happen.
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ditto... mine does too.
 
Re: '66FB GT Upgrade Build-Up

"daveSanborn" said:
Huh.... this is complete news to me. What would cause the fluid to rise that far?
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Two things-

Foaming gear oil (not too good), or more likely
Fine mist due to high RPM churning, so the small oil droplets get carried out with the heated air. Think about how grease in the kitchen can get on lights above a stove.
 
Re: '66FB GT Upgrade Build-Up

i believe as the gears go up in RPM, it creates waves/froth havok in the housing... pushing oil-air mixture up into the vent.
 
Re: '66FB GT Upgrade Build-Up

Plus you have the centrifugal force in hard corners, moving all the fluid to one end or the other.
 
Re: '66FB GT Upgrade Build-Up

adj PV installed in cabin. i did the 2-man brake bleed method and the pedal is still spongy. bleed master cylinder on the car and had to raise the front to get it level... large reservoir for the front brakes had a continuous bubble w/out pushing the pedal down... maybe due to covering the ports improperly using my fingertips.
 

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Re: '66FB GT Upgrade Build-Up

This is freakin' bull$hit. Front brake caliper bleeder screw is stripped or worse, the caliper thread for the bleeder screw is stripped... all I did is a couple of 1/2 turns. Cobra Auto f*cked this up or no??
 
Re: '66FB GT Upgrade Build-Up

Call them and explain the problem. Might send you a flat bottom tap or tell you which one to get. How tight did try to make it? I've not had any problems with mine and I bleed them 1-2 times a month during the track season.
 
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