1966 Mustang Street/track Build

[rhurley]

Thinking of a Tanks INC tank with intank pump. Anyone use one?? hard driving conditions??

[408sbfmustang]

I have used them multiple times and haven't had any issues.

[rhurley]

Well i got the car to the track for its first time........ Was super exciting to see where its come from.

But wasnt expecting much as it was a shake down.


Untitled by Ryan Hurley, on Flickr

[rhurley]

I made 3 solid laps.

Car felt ok..... I have found what needs working on...

Steering wheel is soft and i think i broke it.

Seating position need to be lower, im 6'4" and 295lbs in the smallest car ever...

Brakes suck. Alot

and some other little quirks...






Middle of the 3rd lap i heard a pop.

pulled off and inspected. couldnt find anything, so we put on the camera and sent it.


https://www.youtube.com/watch?v=mfPQ42aKg1A

[rhurley]

made it 3/4 of a lap and the clutch exploded.... at least i hope thats what it is, there were fragments all over.

You can hear it in the video, slipping pretty bad.



Note* this was a full shake down, wasnt worried about race line, hand position or any of that.




and now is broken and i need to pull the trans.

Untitled by Ryan Hurley, on Flickr

[digitalsolo]

Ugh, never fun when that happens, but I suppose that's what shakedowns are for.

[rhurley]

Pulled the trans last night.

This will be the 5th time have had this stupid thing out...... And its leaking again, so i guess it was going to come out no matter what.

First side of the clutch, thinking this isnt too bad???

Untitled by Ryan Hurley, on Flickr


And then i flip it over.......

Untitled by Ryan Hurley, on Flickr

[andrewb70]

Were you doing a lot of downshifting?

Andrew

[rhurley]

Were you doing a lot of downshifting?

Andrew

Yeah, this track goes from wide open in 5th, to 2nd in just 2 corners, back to 4th and back 2nd in another 2 corners....

[andrewb70]

Yeah, this track goes from wide open in 5th, to 2nd in just 2 corners, back to 4th and back 2nd in another 2 corners....

Gee...how did I know that? What I see on the remains of the disk material is a lot of glazing. This is a sign that the clutch was overheating. I suspect the disk overheated to such an extent that the organic friction material started to break down. Hence, we see the result.

Downshifting without RPM matching will wear a clutch out very, very quickly. This is especially true if the course is such that there is a lot of downshifting happening. Organic friction material isn't designed to take a lot of heat and on a road course like you were on, there was no time for the disk to cool down.

Your option is to either learn a different driving style or get a clutch disk with material that is better suited to withstand heat, or both.

Andrew

P.S. Watched the video...and after about the 2:00 minute mark, I can hear the clutch slipping on the 2-3 shift. I suspect it just got worse and worse after that...need to watch the rest of the video...LOL

[rhurley]

Gee...how did I know that? What I see on the remains of the disk material is a lot of glazing. This is a sign that the clutch was overheating. I suspect the disk overheated to such an extent that the organic friction material started to break down. Hence, we see the result.

Downshifting without RPM matching will wear a clutch out very, very quickly. This is especially true if the course is such that there is a lot of downshifting happening. Organic friction material isn't designed to take a lot of heat and on a road course like you were on, there was no time for the disk to cool down.

Your option is to either learn a different driving style or get a clutch disk with material that is better suited to withstand heat, or both.



Andrew

P.S. Watched the video...and after about the 2:00 minute mark, I can hear the clutch slipping on the 2-3 shift. I suspect it just got worse and worse after that...need to watch the rest of the video...LOL

I was rev matching some and really wasnt driving that hard. I think the heat spot are from driving when the clutch was coming apart....

I did some research and called Mcleod, they had a bad run of material in the disc about 3 years ago, i bought the clutch 2 years ago..... maybe thats why.

I have bought a spec stage 2 to try.... hope i have a different outcome.

[OLDFLM]

Wrapped my grille surround trim in Carbon vinyl.

Front end is done for now.

Untitled by Ryan Hurley, on Flickr

Untitled by Ryan Hurley, on Flickr

Untitled by Ryan Hurley, on Flickr

Which vinyl CF is that? Looks really good! 3M Di-Noc?

[rhurley]

Which vinyl CF is that? Looks really good! 3M Di-Noc?

Thanks! The front is 3M 1080. the rear bumper i did in super cheap ebay special....... Go with 3m

[xsboost90]

Looks awesome though! Cant wait to get mine to the track

[rhurley]

Clutch showed up. Along with a new tailshaft bushing, yoke and speedo gear.

The trans has leaked out of the tailshaft since day one and i have been through 2 bushings trying to stop it with no luck. So a 3rd and a new yoke may be my fix! lol

Untitled by Ryan Hurley, on Flickr


Untitled by Ryan Hurley, on Flickr

Untitled by Ryan Hurley, on Flickr

[rhurley]

Got the clutch in,
Spec Stage 2. hopefully i have better luck.

Untitled by Ryan Hurley, on Flickr

Untitled by Ryan Hurley, on Flickr



The Speedo was about 12 mph off, and i already changed to the highest tooth on the sensor, so i got a new main gear.

Untitled by Ryan Hurley, on Flickr


Pressed in the new bushing.

Untitled by Ryan Hurley, on Flickr

[rhurley]

Put it wall Back together, And then things got weird....


Car wouldnt start. Cranked and cranked.


It was midnight so i let it sit until the next day.

Fired up, but was backfiring through the intake and running horrible.


Found this...

Untitled by Ryan Hurley, on Flickr

Untitled by Ryan Hurley, on Flickr

Untitled by Ryan Hurley, on Flickr

[rhurley]

No idea what or how this happened. Car was knocking when the clutch let go, but i just assumed it was the broken clutch hitting the bellhousing....

The stud on the heads is good, the pushrod and spring are good.

I can only assume it came loose somehow.... happens to the best of us right??

So the car is apart again...
Untitled by Ryan Hurley, on Flickr

[digitalsolo]

Either the poly lock came loose or you have a damaged lifter or something. Do you get consistent valve movement on those cylinders vs. the rest?

[Chad-1stGen]

Last time I had a rocker "come lose" it turned out to be a lifter on the CAM going flat. Do you have a flat tappet cam or roller?