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  #21  
Old 08-27-2018, 11:45 AM
Jim Stabe's Avatar
Jim Stabe Jim Stabe is offline
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Quote:
Originally Posted by heinke View Post
Great job on the car Jim!

The body work and clean look are fantastic. What I also appreciate is that you strengthened up the frame as well.

I had a Triumph TR6 that I swapped a 351 Cleveland in without modifying the sheet metal frame. It was a beautiful car, appeared to handle decent enough and accelerated like a rocket. Give it a bit too much throttle in a turn and/or if the turn had an uneven surface, the car rewarded you with a quick 360 view of your surroundings. I didn't realize it at the time but that TR6 frame had enough give to cause this phenomenon. After the first couple of spins, I learned to keep a light pedal on the street. On the autocross course, the car was sideways more than straight.

My fix was to sell it and build a Cobra (which is still my daily driver 20+ years later). My only regret in making this change is that I lost the "sleeper" British car look. Nobody's surprised when a Cobra blows then away but they are shocked when a TR6 does it. I bet your's is fun that way
I didn't want the car to flex (and it doesn't) but the result is that it is a little heavier than I had hoped. Any reduction in weight would probably be accompanied with a reduction in traction. I haven't raced anyone on the street yet although there have been a lot of cars trying to get me to. I guess I'm just getting conservative in my old age.
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MGB roadster widened 11.5", Corvette C-4 suspension, 535 hp supercharged LT1 V8, T-56 6 speed.
Pictures here: It goes to Part 6 now
Part 1
http://forum.britishv8.org/read.php?13,7581
Part 2
http://forum.britishv8.org/read.php?13,22422
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  #22  
Old 08-30-2019, 01:25 AM
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Jim Stabe Jim Stabe is offline
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Kerry - this is an update on the brakes. Without power assist the brakes stopped well around town but a full on panic stop required a lot of pedal pressure. I found some 7" diameter remote mounted brake boosters (VH44) that were OEM on some Australian cars that were small enough to mount in the car. I didn't want to clutter up the engine compartment so I mounted them in front of the front tires under the headlights in the fender well. I needed one for each brake circuit (dual master cylinders) the front booster is on the right and the rear is on the left side. I made a vacuum manifold out of 1 1/2" tubing that plumbs vacuum to both boosters and provides some reserve vacuum for multiple stops. The brakes are now phenomenal and require much less pedal pressure to lock the wheels. With the sticky wide tires you generate a lot of stopping G's before the wheels lock.

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Jim Stabe

MGB roadster widened 11.5", Corvette C-4 suspension, 535 hp supercharged LT1 V8, T-56 6 speed.
Pictures here: It goes to Part 6 now
Part 1
http://forum.britishv8.org/read.php?13,7581
Part 2
http://forum.britishv8.org/read.php?13,22422
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  #23  
Old 08-30-2019, 09:22 AM
John Buchtenkirch John Buchtenkirch is offline
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Looks great………. like that’s how the factory should have built it. You certainly should be proud. ~ John Buchtenkirch
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  #24  
Old 08-30-2019, 01:29 PM
dwmh dwmh is offline
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Superb job Jim. That's quite a car you've made. Very neat.
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  #25  
Old 08-31-2019, 09:05 AM
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Default Finally finished the Wide MGB

Well done Jim, beautiful result.
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  #26  
Old 07-21-2022, 10:06 AM
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Jim Stabe Jim Stabe is offline
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Quote:
Originally Posted by Jim Stabe View Post
Let's take your questions one at a time

1. Two of the masters are for brakes and one is the clutch. I run a Wilwood pedal setup with a balance bar between the masters for the front and rear brakes. The balance bar allows you to adjust the split of pressure applied to the front or rear brakes for balance. I run mine with a slight balance to the front.

1a I started out with 3/4" masters for everything but the brakes were too heavy and there was very little pedal travel. I use the 5.1:1 ratio pedals instead of the 6:1 ratio which makes the pedal pressure required higher. The clutch released at the very top of the pedal travel and was quite light. The switch to 5/8" masters made the braking better and moved the clutch release point just above mid travel. I still have to really stand on the brakes to get them to lock and would like a little assist. Tell me more about your remote booster.

1b. I have power steering. I use a pump from a Pontiac Grand Am but put the largest pulley I could find in the junk yard on it. The feel came out just the way I wanted. With the weight of my car and the tires I have on the front the car would not be fun to drive with no assist in the rack.

2. I had the entire drivetrain installed with the car on the rotisserie. Much easier to make exhaust and the like that way. I did all the fabrication I could before I put any fluids in the car. It would make a real mess if I put it on there now.

3&4. Go for it.

5. Parking brake works well. Do you have the 84-87 or the 88 on rear end? I have the later one with the caliper mounted parking brake and it works pretty good. I got cables from Rock Auto for a Camaro (I believe) that had the same caliper ends and shortened them to use with my modified MGB handle.

Thanks Kerry. Do you have a build log of your car? I would like to look through it. I'll PM you my phone # in case you want to talk about anything on your build.

Jim
Kerry, I know this is an old thread but I'm curious how your car turned out. I see that the last post in your build thread was in 2020 and you had not painted the car yet.
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Jim Stabe

MGB roadster widened 11.5", Corvette C-4 suspension, 535 hp supercharged LT1 V8, T-56 6 speed.
Pictures here: It goes to Part 6 now
Part 1
http://forum.britishv8.org/read.php?13,7581
Part 2
http://forum.britishv8.org/read.php?13,22422
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