• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Fiesta ST Forum and Fiesta ST community dedicated to Fiesta ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Fiesta ST Forum today!


Clutch question?

D

Dylan951

Member
#1
Messages
115
Likes
57
Location
Stanwood, WA, USA
#1
So I’m going big turbo from a hybrid turbo turbo which is currently at about 300hp on e30. I’m still on the stock clutch which has been great. But I’ll need to upgrade for the power/torque numbers I’m looking to hit. So is the Spec stage 3+ the general consensus for the best clutch to buy or is there other better options?
 


TyphoonFiST

TyphoonFiST

9000 Post Club
Premium Account
#2
Messages
11,515
Likes
8,008
Location
Rich-fizzield
#2
Dylan951 said:
So I’m going big turbo from a hybrid turbo turbo which is currently at about 300hp on e30. I’m still on the stock clutch which has been great. But I’ll need to upgrade for the power/torque numbers I’m looking to hit. So is the Spec stage 3+ the general consensus for the best clutch to buy or is there other better options?
Click to expand...
Are you going to stick with the Stock Dual Mass Flywheel? If so make sure the Friction disc isn't sprung. But if your going with a Single Mass Flywheel get a Sprung clutch disc. I am just days away from my install of the RTS Twin friction clutch with a SMF. Keep any eye out as i will try to get a DIY of the actual Trans removal also that others leave out. The spec 3+ is more than adequate and others have had luck with them with High HP setups.
 


OP
D

Dylan951

Member
Thread Starter #3
Messages
115
Likes
57
Location
Stanwood, WA, USA
Thread Starter #3
T
TyphoonFiST said:
Are you going to stick with the Stock Dual Mass Flywheel? If so make sure the Friction disc isn't sprung. But if your going with a Single Mass Flywheel get a Sprung clutch disc. I am just days away from my install of the RTS Twin friction clutch with a SMF. Keep any eye out as i will try to get a DIY of the actual Trans removal also that others leave out. The spec 3+ is more than adequate and others have had luck with them with High HP setups.
Click to expand...
Thanks dude, you’ve reply on anything I’ve posted and I appreciate your input
 


OP
D

Dylan951

Member
Thread Starter #4
Messages
115
Likes
57
Location
Stanwood, WA, USA
Thread Starter #4
TyphoonFiST said:
Are you going to stick with the Stock Dual Mass Flywheel? If so make sure the Friction disc isn't sprung. But if your going with a Single Mass Flywheel get a Sprung clutch disc. I am just days away from my install of the RTS Twin friction clutch with a SMF. Keep any eye out as i will try to get a DIY of the actual Trans removal also that others leave out. The spec 3+ is more than adequate and others have had luck with them with High HP setups.
Click to expand...
1. What’s the advantage of going smf? 2. Why does it have to be sprung or unsprung depending on the flywheel? And I thought the spec stage 3+ only came with a sprung clutch disc?
 


L

Lays

Member
#5
Messages
403
Likes
352
Location
Salem, OR, USA
#5
Dylan951 said:
1. What’s the advantage of going smf? 2. Why does it have to be sprung or unsprung depending on the flywheel? And I thought the spec stage 3+ only came with a sprung clutch disc?
Click to expand...
The spec stage 3+ comes in sprung or solid, solid is for DMF, sprung is for SMF.

My buddy Wesley has gone ~11.50's in the 1/4 on a solid-disk Spec stage 3+ and OEM flywheel, it'll handle whatever you throw at it.

I have one awaiting install, just need to find time. I went 12.3 @ 113 with a slipping OEM clutch at ~370 whp and torque, I think the new clutch I should easily be able to dip into the 11's.
 


Last edited:
LilPartyBox

LilPartyBox

1000 Post Club
Premium Account
#6
Messages
1,488
Likes
769
Location
NYC
#6
Dylan951 said:
1. What’s the advantage of going smf? 2. Why does it have to be sprung or unsprung depending on the flywheel? And I thought the spec stage 3+ only came with a sprung clutch disc?
Click to expand...
I'm oversimplifying but either the flywheel or the clutch has to be sprung to absorb the shock from the input shaft revolution as the clutch makes contact with the flywheel (which is connected to the input shaft). If not, the shock damages the gear sets and/or shaft seal over time.
 


You must log in or register to reply here.
Thread starter Similar threads Forum Replies Date
ShaunPanday Hard going into 1st and 2nd after clutch and slave replacement Transmission & Drivetrain 1
@Salty_FiST SLD Spec Stage 2 Sprung Clutch & Fidanza Flywheel For Sale 2
S Clutch pedal sticks Fiesta ST Discussions 2
0 Clutch pedal sticking on hills Maintenance, Warranty Issues & Troubleshooting 7
J Clutch assist spring question Fiesta ST Discussions 0
O Clutch Pressure Bleeding From the Top vs Bottom Transmission & Drivetrain 1
E Clutch questions. Transmission & Drivetrain 0
Garrettrulz10 Clutch Replacement Questions Transmission & Drivetrain 16
A Clutch Replacement Question: Transmission Removal requires Subframe Removal? Transmission & Drivetrain 11
codestp202 Quick question on bleeding after new lines / clutch fluid Suspension, Brakes & Chassis 6

Similar threads

Ford Community Posts



Top