Upgrading valve spring question
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Upgrading valve spring question I have Texas speed heads that came with prc1518 valve springs and I run a 228r cam, after reading about an unfortunate failure with prc 1518 springs with a 228r cam, I'm going to upgrade.
What is the best choice? Some people jump to a double spring becuase of the added security of the second spring. my understanding is that the downside of double springs are increased weight of the valvetrain and increased seat pressure.
the second option is upgrading to a very high quality single beehive spring such as the Psi1511ml.
What are your thoughts?
What is the best choice? Some people jump to a double spring becuase of the added security of the second spring. my understanding is that the downside of double springs are increased weight of the valvetrain and increased seat pressure.
the second option is upgrading to a very high quality single beehive spring such as the Psi1511ml.
What are your thoughts?
Every vendor can have a bad batch of springs. You still see people avoiding comp 918 for stuff they went through years ago with a bad heat (batch) of wire from the mill that rolled it. Just don't assume yours are bad simply based on someone else breaking a spring.
If you're not getting valve float or beating the motor too hard, you'll be ok. If you're that worried about it BTR duals are good, lunati is good
If you're not getting valve float or beating the motor too hard, you'll be ok. If you're that worried about it BTR duals are good, lunati is good
I bought PSI 1511 for my build but I plan on a Cam Motion cam that is easy on springs. PSI 1511 has never had a documented failure; they may go soft but they don't break.
For the TSP 228r with it's XE-R lobes, I would run the BTR platinum duals . Ti retainer if you can afford them. They also have never had a documented failure.
For the TSP 228r with it's XE-R lobes, I would run the BTR platinum duals . Ti retainer if you can afford them. They also have never had a documented failure.
Thread Starter
TECH Regular
Joined: Jan 2007
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I bought PSI 1511 for my build but I plan on a Cam Motion cam that is easy on springs. PSI 1511 has never had a documented failure; they may go soft but they don't break.
For the TSP 228r with it's XE-R lobes, I would run the BTR platinum duals . Ti retainer if you can afford them. They also have never had a documented failure.
For the TSP 228r with it's XE-R lobes, I would run the BTR platinum duals . Ti retainer if you can afford them. They also have never had a documented failure.
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Because I don't want you to be the next unfortunate failure. XE-R lobes can be tough on springs. They do make power, they do raise your dynamic compression. You could do PSI 1511ml (they don't suck) but with any spring, you'll have to check spring pressures often with those lobes.
Last edited by squalor; Jun 7, 2015 at 03:59 PM.
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Thread Starter
TECH Regular
Joined: Jan 2007
Posts: 403
Likes: 17
Because I don't want you to be the next unfortunate failure. XE-R lobes can be tough on springs. They do make power, they do raise your dynamic compression. You could do PSI 1511ml (they don't suck) but with any spring, you'll have to check spring pressures often with those lobes.
