PST Driveshaft 1200hp. Nope. Twisted Yoke!
10-11-2010, 10:59 AM
#41
its pretty plain and simple from here... to anyone that has a PST shaft with a suspect yoke, and it is indeed twisted, they will stand behind their product 100%. it is their policy, like most other manufacturers to replace the failed part with the same thing. if there is a upgrade to that particular part that you feel you need(such as the forged yoke-a direct replacement) then they will most likely ask you to cover the original cost of the upgrade(usually 50.00) and get you into the next step up. this will be PST's sole discretion, but there should be no issues with getting a twisted yoke covered.
easiest way to see if you have twisted splines is to remove the rear straps from the rearend yoke and push the entire driveshaft w/trans slip yoke all the way into the trans- BY HAND. if it stops before the seal surface ends it may be twisted. if it goes all the way in until is touches the u-joint ears then it is fine.
easiest way to see if you have twisted splines is to remove the rear straps from the rearend yoke and push the entire driveshaft w/trans slip yoke all the way into the trans- BY HAND. if it stops before the seal surface ends it may be twisted. if it goes all the way in until is touches the u-joint ears then it is fine.
10-11-2010, 01:05 PM
#43
Spicer yokes can twist/break too so I don't see what the argument is about. This happened to me earlier this year (May 2010) on a 500rwhp T56 car with ET Drags, 3300lb raceweight. Ended up having to remove the tailhousing off the trans to get the broken piece off the ouput shaft. Wiped out the tailhousing bushing also. I run a Moser billet trans yoke now and if this one twists/breaks I'm either upgrading to a Mark Williams piece, or doing a 30 spline Viper output shaft conversion.
Mike
Mike
10-12-2010, 07:22 AM
#44
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That is a strange modified spicer slip, it looks as if it might have compressed.
The china stuff is much more prone to failures.
I have seen more failed china stuff then anything spicer, and of the spicer failures for me the 3 i had were improper angles, and those were off-road race trucks.
The china stuff is much more prone to failures.
I have seen more failed china stuff then anything spicer, and of the spicer failures for me the 3 i had were improper angles, and those were off-road race trucks.
10-12-2010, 10:21 AM
#46
That is a strange modified spicer slip, it looks as if it might have compressed.
The china stuff is much more prone to failures.
I have seen more failed china stuff then anything spicer, and of the spicer failures for me the 3 i had were improper angles, and those were off-road race trucks.
The china stuff is much more prone to failures.
I have seen more failed china stuff then anything spicer, and of the spicer failures for me the 3 i had were improper angles, and those were off-road race trucks.
If you want to do it right then we offer the Strange chromemoly yokes that are used in Pro Stock and Pro Modified cars. it retails at 179.00. call us for a quote. for anyone else interested we can also have this yoke installed at the time of manufacture for a 100.00 upgrade cost.
10-12-2010, 11:23 AM
#47
That is a strange modified spicer slip, it looks as if it might have compressed.
The china stuff is much more prone to failures.
I have seen more failed china stuff then anything spicer, and of the spicer failures for me the 3 i had were improper angles, and those were off-road race trucks.
The china stuff is much more prone to failures.
I have seen more failed china stuff then anything spicer, and of the spicer failures for me the 3 i had were improper angles, and those were off-road race trucks.
Mike
10-12-2010, 03:01 PM
#49
There is option for an upgrade though, they offer a cryo treated forged yoke and there is other options as well out there we can get you into.
Cryo treated forged yoke is a $50 upgrade.
Chrome-moly yoke is a $100 upgrade.
10-12-2010, 08:09 PM
#50
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Originally Posted by Razmiblackz28 View Post
Did the early PST shafts come with a spicer yoke?
Midwest, Does your fabricated 9 package with the PST shaft include a spicer or cam yoke?
They have always used a cryo treated spicer style yoke.
There is option for an upgrade though, they offer a cryo treated forged yoke and there is other options as well out there we can get you into.
Cryo treated forged yoke is a $50 upgrade.
Chrome-moly yoke is a $100 upgrade.
I don't understand your answer, is it a Spicer yoke or not.
What the heck does "Spicer Style" mean...Is that code for a CAM yoke.
Did the early PST shafts come with a spicer yoke?
Midwest, Does your fabricated 9 package with the PST shaft include a spicer or cam yoke?
They have always used a cryo treated spicer style yoke.
There is option for an upgrade though, they offer a cryo treated forged yoke and there is other options as well out there we can get you into.
Cryo treated forged yoke is a $50 upgrade.
Chrome-moly yoke is a $100 upgrade.
They have always used a cryo treated spicer style yoke.
There is option for an upgrade though, they offer a cryo treated forged yoke and there is other options as well out there we can get you into.
Cryo treated forged yoke is a $50 upgrade.
Chrome-moly yoke is a $100 upgrade.
There is option for an upgrade though, they offer a cryo treated forged yoke and there is other options as well out there we can get you into.
Cryo treated forged yoke is a $50 upgrade.
Chrome-moly yoke is a $100 upgrade.
What the heck does "Spicer Style" mean...Is that code for a CAM yoke.
10-13-2010, 08:29 AM
#52
"Spicer style" is simply a designation of u-joint sizes/style... sorry about the way he worded it if it is confusing to some. we are definitely not trying to mislead anyone here.
we do not have our own specific "package" from PST... it is the same thing if you called PST and ordered a shaft yourself.
We use PST and Strange shafts in our own cars with the regular yokes and have never had issues, nor has any of our customers that have purchased PST shafts from us. the OP has a rare case and due to whatever circumstance probably needs a forged or chromemoly yoke. It all comes down to application.
we have spoke with PST on this matter and have everything in order now with them to be sure the correct yoke- if it is a CAM, Spicer, or Strange will be used. CAM and Spicer yokes are not the same, but are obviously about the same strength wise. what yoke you get will depend on how much power, what transmission, and what you do with the car. there will be the three different levels available. the standard will be the cryo treated CAM yoke, mid range will be the cryo treated forged yoke, and the high end will be the Strange chromemoly yoke.
we do not have our own specific "package" from PST... it is the same thing if you called PST and ordered a shaft yourself.
We use PST and Strange shafts in our own cars with the regular yokes and have never had issues, nor has any of our customers that have purchased PST shafts from us. the OP has a rare case and due to whatever circumstance probably needs a forged or chromemoly yoke. It all comes down to application.
we have spoke with PST on this matter and have everything in order now with them to be sure the correct yoke- if it is a CAM, Spicer, or Strange will be used. CAM and Spicer yokes are not the same, but are obviously about the same strength wise. what yoke you get will depend on how much power, what transmission, and what you do with the car. there will be the three different levels available. the standard will be the cryo treated CAM yoke, mid range will be the cryo treated forged yoke, and the high end will be the Strange chromemoly yoke.
10-13-2010, 03:28 PM
#55
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I understand now. Hopefully the yokes hold up over time. Thanks for responding and posting so openly. I like the way you have handled the yoke confusion and did not try to bury it, or control it through censorship like you probably could have done.
This thread is closed in my book. OP
This thread is closed in my book. OP
10-24-2010, 07:13 AM
#58
So I took my drive shaft out again last night to do some exhaust work (pry it out actually), and discovered the yoke splines were bent yet again! This is the second time for me in twisting the yoke. And this only with ONE trip to the track on a car with bolt ons! I was only getting a 1.8 60' as well.
My beef is this. I'm running with a BOLT ON car and snapped my stock driveshaft almost a year ago, so I needed a stronger one. Eric recommended PST, and so I went with them since they are literally an hour and a half from where I live. When I see they had a lifetime warranty and rated the driveshaft at 1000 hp I felt comfortable with my decision. But, it's quite obvious this driveshaft DOES NOT handle anywhere near the advertised rating. I understand that all I have to do is send it over to them for free and get it replaced, but it is absolutely assinine that I will have to do it EACH time I go to te track. I'm very disappointed in my purchase and will not recommend PST to anyone else. I will be calling them tomorrow demanding to get this upgraded yoke (which should come with a driveshaft rated at their advertised hp) for free. If not, I will simple remove my driveshaft after every trip to the track and send it back to them to have it replaced on their dime. Considering I go to the track probably at least 6 times a year, they can decide which is more cost effective for them......replace it with a yoke it SHOULD of come with, or keep paying for shipping and the Chinese crap 6 times a year.
My beef is this. I'm running with a BOLT ON car and snapped my stock driveshaft almost a year ago, so I needed a stronger one. Eric recommended PST, and so I went with them since they are literally an hour and a half from where I live. When I see they had a lifetime warranty and rated the driveshaft at 1000 hp I felt comfortable with my decision. But, it's quite obvious this driveshaft DOES NOT handle anywhere near the advertised rating. I understand that all I have to do is send it over to them for free and get it replaced, but it is absolutely assinine that I will have to do it EACH time I go to te track. I'm very disappointed in my purchase and will not recommend PST to anyone else. I will be calling them tomorrow demanding to get this upgraded yoke (which should come with a driveshaft rated at their advertised hp) for free. If not, I will simple remove my driveshaft after every trip to the track and send it back to them to have it replaced on their dime. Considering I go to the track probably at least 6 times a year, they can decide which is more cost effective for them......replace it with a yoke it SHOULD of come with, or keep paying for shipping and the Chinese crap 6 times a year.
10-24-2010, 07:25 AM
#59
I agree with you. We may not have been told what yoke we purchased, but we bought a "1200 hp" driveshaft. That alone would lead a lay person that doesn't know what slip yoke is strong or not to believe that the driveshaft, as a whole, would at least stand up to 400hp. This is not the case with these driveshafts. I'm glad this thread was made, as I was told they've never heard of the yokes twisting. This is boderline false advertising imo. Although not applicable at the consumer level, the UCC has a section that covers products that are not fit for their intended use, sounds like the PST 1200 hp driveshaft Thank god for the Internet where customers can talk with another about problems of a product
10-24-2010, 07:35 AM
#60
FWIW, ever shaft I ever bought it was an UPGRADE to get a spicer yoke, which I usually opted for.. Never had a pst though, but lots of others, strange, spohn(looked like a strange), custom local one that snapped.... etc...
So basically people shouldnt assume stuff comes with spicer yokes, when driveshaft prices usually start cheap... and work their way up with add ons.
So basically people shouldnt assume stuff comes with spicer yokes, when driveshaft prices usually start cheap... and work their way up with add ons.