SN95 The Unicorn Build Thread Profile - SN95 Mustangs

[White95]

@PatientZero - I’m at the point where I’m questioning my alignment now. The car is tending to understeer after the apex on throttle but will rotate off throttle. You can probably see that I’m my video.

I’m really hesitant to change anything because I don’t have much seat time yet. However, if you watch this instructor run he was dealing with it too.

Settings:

-1.9 camber
+8.8 caster
.25 toe in

MM k/fwd offset arms
KB front bar - Full stiff
MM 1” rear bar - Full stiff
425/325 coil overs
MM race struts
MM sport shocks

TA/PHB

275/35r18 Federal RS-Pro (27 F/26 R psi)

 

[PatientZero]

I had the same problem with the same setup as you. Jack at MM had me swap out the rear springs from 325 to 275 and go up to a 1.25" rear bar. It made all the difference in the world. I'm also running more front camber than you which also helps, about -3.5°

SN95 - LS3 Pony Build Thread

I believe you are spot on with the drive shaft. Nothing else should be causing that type of vibration the way you described. Can you not send the drive shaft off for a rebalance and check?

trackmustangsonline.com

 

[White95]

Copy. I will make an alignment adjustment as the first step to see how she reacts.

I’m going to be switching to a Cortex watts link this summer and I’m think I should wait to change anything else before then.

 

[PatientZero]

Did you read what Jack wrote on that link? It's just too much weight transfer across the front tires. Since the torque arm has so much more grip than the stock suspension you can transfer alot of the weight transfer to the rear tires.

 

[White95]

Did you read what Jack wrote on that link? It's just too much weight transfer across the front tires. Since the torque arm has so much more grip than the stock suspension you can transfer alot of the weight transfer to the rear tires.

No, I’ve been in a stupid “Root Cause Analysis” meeting all morning and haven’t had the chance.

Edit:

I’m curious what my “front roll stiffness percentage” would be given the fact I have an adjustable sway bar in the front.

 

[White95]

Car sorted, cleaned up, tech inspected and ready to go.





…but the hydroboost is apparently leaking into the passenger compartment through the boot for the rod attached to the pedal.



I’m not sure I’ll be able to fix this issue in time to make this weekends NASA event. This is why I need a back up car.

 

[Bill Pemberton]

Just one small note.............since you are not in " Jolly Olde England " that side you show pictures of a leak is the driver's side , not the passenger side, haha. Heh, blame it on spellcheck, the damn Ai systems are starting to write our notes anyway. Good luck the car looks mean and ready to roll -- hope you get her repaired.

 

[White95]

Just one small note.............since you are not in " Jolly Olde England " that side you show pictures of a leak is the driver's side , not the passenger side, haha. Heh, blame it on spellcheck, the damn Ai systems are starting to write our notes anyway. Good luck the car looks mean and ready to roll -- hope you get her repaired.

Passenger compartment

I am a grammar nazi and I applaud your vigilance

 

[White95]

Local parts house has a reman booster unit and I’ll be late night thrashing to make it Saturday.

 

[TMSBOSS]

See you on Saturday.

 

[White95]

See you on Saturday.

Lord willing.

 

[Dave_W]

Nice car and good luck on the fix. Jealous that you're going to a track day and I'm getting 3" of snow tomorrow.

 

[Bill Pemberton]

Dave_W we are sitting here with only 1 inch of snow , but......................it has been below zero the last three mornings when I got up, so I feel your pain!

 

[TMSBOSS]

1” of snow? Bummer.
I am heading to the track In a few hours.

 

[PatientZero]

Going to be in the 60's here next week

 

[White95]

Left work early to hopefully pick that booster up and this time it was the correct part! After FIGHTING lunchtime BR traffic I made it home and got to work.




Had it out in about 40 minutes and clearly leaking where I thought it was. The new booster looks pretty good but I wish they wouldn’t have put this stupid sticker on it.








Now the stupid ****** leaks from the high pressure fitting LOL

The damn fitting has been WRONG the entire time apparently but didn’t leak before because the line pressure wasn’t high enough. Luckily, I was able to quickly track a few down but they’re about an hour drive away. Bought them over the phone and picking them up after hours.



Finally made it home and quickly determined the new fittings were too big.

6AN x 18mm - 1.5 = 99-04 Booster

6AN x 11/16 - 18 = 96-98 Booster

piss.

There was another possible fix but I didn’t want to risk oiling the track down or wrecking the car.



Needless to say, I didn’t make the track weekend.

 

[302BOB]

Needless to say, I didn’t make the track weekend

The best laid plans have often been derailed by unforeseen obstacles.........keep that chin up!!!!......your time to shine will be here soon.......

 

[TMSBOSS]

Bummer. Glad you are getting fixed.

next time.

 

[Bill Pemberton]

Get the crate, Blacksheep you could be the driver in Florida running the Orange Crate ----- seems quite appropriate and as old as that motor is sounds like you could use the juice from the new one.

 

[PatientZero]

That sucks man, at least you know the problem now. I'd much rather have that than not being able to figure out what's wrong.