valve spring Q

[blesi660r]

I am currently doing a build for my new talon and starting with the head

my Q is : I am installing a set of delta 272 regrinds, I have the head fully disassemble for decking and am wondering if I should up grade the valve springs while its apart, im thinking yes but im not positive. Lil help lol

[4seasons69]

What are your goals for the car? How much power do you want to make? How high do you want to rev? As far as I know you need to upgrade with 272s but in my opinion if you can afford it since you have it apart I would just do it. I'd up grade the valves and the springs and retainers.

[blesi660r]

Im shooting for 450 on e85, stock block, mild head build, I will look into the cost of valves but might have to just stick with upgraded springs,

[4seasons69]

A set of valves is like 200 to 400. But that sounds like a solid plan

[CornFed2.4]

What deltas are you going with. There are a ton of 272 options. You can get away with stock valves but you'll 95% of the time need to upgrade your springs. I Think evo springs and retainers should suffice unless they are high lift 272s

[blesi660r]

To be honest im not sure which really sucks, they came with the car and they are regrinds... I have some of the specs on them at home like lobe base diameter and hight and all the calculations.

[blesi660r]

Ok I found my specs that I was able to get by measuring the cam lobe

intake and exhaust.
cam lift- .221
net lift- .375/9.525 mm

exhaust is only a few thousandths different from the intake

I was looking at maybe the BC springs and titanium retainers.
valves are not in the buget as of right now ,but I might be able to get a set if I hold off on assembly for a month or two...

[scheides]

OEM valves and done basic beehive springs that use stock retainers as an upgrade. Get some Evo valves if you must, but save going with oversized valves for when you need to repair damage. It's a DSM,keep it simple, keep the budget nice and goals realistic.

[Halon]

That doesn't seem like it'd be that aggressive of a cam. However there is no black and white answer to whether or not you need or don't need to upgrade springs. Just have to measure out the risk and decide for yourself if it's worth it or not.

So just think through it. These cams, while not overly aggressive, are still more aggressive than factory, so they're going to be a little harder on the factory springs. They can probably take it, but how many miles are on these springs, how many of those miles are with the more aggressive cams? If this was a head with 50k miles on it, I'd probably just keep the stockers in and not rev it to the moon. However if you're talking a head with 100k+ miles, 20k of those are with the more aggressive cams, well then you're risk of inducing some sort of failure is going to start increasing.

From what I gather, you're on a tight budget. Beehives are great, but for your goals and what seems to be a tight budget, I'd just go with a single spring upgrade like Crowers. They are very affordable and should perform well enough for a mild cam setup like you have. That is probably what I'd personally do if I were in your shoes.

Or just stick with the stockers, but understand there's some risk involved, especially if the springs are in unknown condition/high milage. If you're willing to take that risk in an effort to conserve some money, that's your call. You may end up being completely fine, or you may end up floating a valve.

[C3L1CA]

^Very good advice.

If it were me I'd let it buck if the valve springs didn't have a ton of miles on them. If they did, I'd reaplace them with something cheap but will get the job done. No need to go crazy for your goals.

I rocked the dks regrind 272s on stock valve springs for a while making 450ish + on DB's dyno for what its worth without any problems.