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Old 04-26-2021, 05:54 PM   #1
pinguin
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Default STS vs Yoshifab Stage II clutch

Anybody used both? Clutch and driveshaft are the last pieces needed for my T5 swap, and I'm trying to decide between the two. I'm using the STS flat flywheel.
8V +T with 15G - for now

Also open to other options if there's a better way to go. (other than the yoshi full kit, because this is still TB, and that thing is $$$$$$)
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Old 04-26-2021, 09:35 PM   #2
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I'd recommend something with an upgraded organic disc and a higher clamp pressure plate, and stay away from Kevlar as I haven't had good luck with it... it's very finicky about break-in.

Depending on the dowel pin orientation, you might be able to use a Saab Viggen 215/228 pressure plate and a 9" clutch disc (vs the 8-1/2")
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Old 04-27-2021, 12:15 PM   #3
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Originally Posted by culberro View Post
I'd recommend something with an upgraded organic disc and a higher clamp pressure plate, and stay away from Kevlar as I haven't had good luck with it... it's very finicky about break-in.

Depending on the dowel pin orientation, you might be able to use a Saab Viggen 215/228 pressure plate and a 9" clutch disc (vs the 8-1/2")
Are there measurements I can take at home to see if I'm able to go that route?
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Old 04-27-2021, 12:26 PM   #4
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If the dowel pin is directly in the center of the pressure plate bolt holes, you can.
You also need to shim the PP ~ 1.2mm with some washers, it's pretty darn easy to do. I think I used some 5/16" SAE or AN washers, and they were perfect.

I'll try and find a thread for you on it.

Last edited by culberro; 04-27-2021 at 12:49 PM..
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Old 04-27-2021, 12:34 PM   #5
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+1 on the saab viggen PP and 9" disc
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Old 04-27-2021, 10:26 PM   #6
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you can also have a machine shop re-pin the flywheel if the dowels don't line up with the Viggen PP...the bolt holes will line up regardless but seems like hit-or-miss with dowels being oriented correctly.
REF: https://forums.tbforums.com/showpost...1&postcount=98
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Old 04-28-2021, 12:19 PM   #7
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I have a Yoshi Stage 2 and STS flat on my t5 swap b230ft. Clutch feels basically like stock although the lighter flywheel is noticeable. I've only driven the car about 100 miles so I'm still breaking it in, but it feels fine.
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Old 04-28-2021, 01:31 PM   #8
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Be prepared to wait 3 months and take a 50% chance of your order not being right when you purchase from Yoshifab lmao. My order still ain't right after 2 months
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Old 04-28-2021, 01:42 PM   #9
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Be prepared to wait 3 months and take a 50% chance of your order not being right when you purchase from Yoshifab lmao. My order still ain't right after 2 months
Donít his clutches ship direct from the manufacturer?
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Old 04-28-2021, 01:54 PM   #10
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Be prepared to wait 3 months and take a 50% chance of your order not being right when you purchase from Yoshifab lmao. My order still ain't right after 2 months
Par for the course for made to order parts during a pandemic. Learn to be patient and plan ahead.

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Donít his clutches ship direct from the manufacturer?
Yeah they drop ship.
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Old 04-28-2021, 02:03 PM   #11
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Par for the course for made to order parts during a pandemic. Learn to be patient and plan ahead.



Yeah they drop ship.
I'm being more than patient, I received the wrong Throwout bearing and getting the right one sent to me shouldn't be a tug of war of emails to even get a solid answer of when I can expect the right one
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Old 04-28-2021, 08:26 PM   #12
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I use HR Clutch in Bensalem PA for clutch needs. They just built a clutch for a friends 90 +t. It's been working great with him using 15psi.
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Old 04-29-2021, 09:41 AM   #13
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Don’t his clutches ship direct from the manufacturer?
If he's drop shipping from south bend, it's their problem not yoshifab's. I bought direct from them and it took 3 tries to get the right clutch disk, but I'm using their 8.25" with a John V flywheel. It's their 330ft.lb. clutch, it's a hybrid disk , ceramic pucks on the flywheel side and organic on the pressure plate side with a Sachs pressure plate. It's streetable but might be a bit much for a daily. I try not to slip it too much to save wear on the flywheel. It's holding 25psi in 3rd gear on my T5 but I also have a 4.10 rear.
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Old 04-29-2021, 10:10 AM   #14
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Josh has also been moving his shop and I imagine that all but halted operations for at least some period of time. I will say that I've found that if you can catch a busy shop on the phone it usually goes much better than the e-mail ping pong.
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Old 04-29-2021, 10:56 AM   #15
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Josh has also been moving his shop and I imagine that all but halted operations for at least some period of time. I will say that I've found that if you can catch a busy shop on the phone it usually goes much better than the e-mail ping pong.
I'm over it at this point. Every single item I've ordered from that place in the past has been wrong or doesn't fit correctly. Gonna pray that this clutch, flywheel and throwout bearing actually fit, whenever I get it.
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Old 04-29-2021, 11:49 AM   #16
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I'm over it at this point. Every single item I've ordered from that place in the past has been wrong or doesn't fit correctly. Gonna pray that this clutch, flywheel and throwout bearing actually fit, whenever I get it.
You must be new to Volvo aftermarket/performance parts suppliers. This is par for the course.
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Old 04-30-2021, 06:48 PM   #17
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I’ve got the sts flywheel and stage 2 yoshifab clutch and it’s a great setup. I’ve been hammering on it for 2 years and it’s still good.
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Old 05-12-2021, 12:43 PM   #18
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Looks like my flywheel is good for the viggen PP, so I ordered that. Anybody have experience with centerforce clutch discs? Looking at that thread, it's just a mustang SVO disc for the combo, and I can get a centerforce disc easy. Is there an advantage to going through a clutch distributor?
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Old 05-12-2021, 12:47 PM   #19
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Quote:
Originally Posted by pinguin View Post
Looks like my flywheel is good for the viggen PP, so I ordered that. Anybody have experience with centerforce clutch discs? Looking at that thread, it's just a mustang SVO disc for the combo, and I can get a centerforce disc easy. Is there an advantage to going through a clutch distributor?
Not really unless they want to cut you a deal.
If you're using off the shelf products, Summit (or other) will usually be much cheaper than going direct.

Don't forget to shim the pressure plate and the pivot ball. It's a good setup!
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Old 05-12-2021, 05:46 PM   #20
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Originally Posted by culberro View Post
Not really unless they want to cut you a deal.
If you're using off the shelf products, Summit (or other) will usually be much cheaper than going direct.

Don't forget to shim the pressure plate and the pivot ball. It's a good setup!
If I have the yoshi adjustable TO, how much does the pivot need to be shimmed if at all?
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Old 05-12-2021, 07:06 PM   #21
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If I have the yoshi adjustable TO, how much does the pivot need to be shimmed if at all?
I'm not sure on that. I had to shim the pivot ball about 3-4mm.

It's really easy to check what's needed by installing just the bellhousing and looking through the center hole or the clutch fork hole.
I just set it up so the fork was towards the rear of the opening, to allow for full cable stroke.

Last edited by culberro; 05-12-2021 at 07:17 PM..
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