What springs to run w Kelford 272's?
duals are overkill unless you have a built bottom-end and plan on reving past 9000rpm.
I have the basic GSC Beehive (5039) springs on my kelford 272's. They were about $225--tramendous bang for your buck! I've rev'd to 8300 w/o issue, they're rated to 8500 or 9000. The FP Beehive's are nearly identical, also a good choice.
I have the basic GSC Beehive (5039) springs on my kelford 272's. They were about $225--tramendous bang for your buck! I've rev'd to 8300 w/o issue, they're rated to 8500 or 9000. The FP Beehive's are nearly identical, also a good choice.
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I have Supertech and have heard nothing but good things about them from both the Evo and Honda communities.
I have also read a few threads on Brian Crower springs having issues, so you may want to look into those claims or stay away from them.
I have also read a few threads on Brian Crower springs having issues, so you may want to look into those claims or stay away from them.
Last edited by golgo13; Mar 5, 2010 at 02:00 PM.
I've got a set of lightly used Supertech dual valve springs with Ti retainers and the proper locating seats for sale for $200 shipped, if you're still interested in dual springs. They are in excellent condition.
Dual valve springs have a higher RPM band which allows you to run more aggressive cams and not float a valve.
Taken from this thread on Team Integra.net:
Taken from this thread on Team Integra.net:
The first thing you should think of when buying valve springs is your future goals in terms of peak horsepower and max redline desired.
Next you should determine which cams will get you to the power level that you require. Now this is the time when you start to consider which valve spring you should purchase. One of the first things is determining the highest lift point of the cams that you'll be running. You can get this info by searching online, emailing or phoning the company that makes the cam or which the cam card that comes with the purchase of new cams.
After you figure out the max lift, it's time to find out what the desired install valve spring height that the valve spring manufacture recommends for their valvespring. It's the same to find this info as the cams. Either search online, email/phone the company or most valvesprings manufactures will have a card or sheet that comes with the valvesprings when purchased. Now it's a safe bet that most of the reputable companies will have the same valve spring install height as the application your looking for.
Another big thing to look for is if the company your buying the valve springs from, do they recommend that you buy there retainers and valves? More accurately, do they measure the valve spring height with there valve retainers and valves or do they measure the valve spring height with stock valve spring retainers and stock valves. The reason for this is, the only way to change the installed valve spring height is to change the location of which the retainer locks the valve spring keepers into place. Or to lengthen or shorten the stem of the valve itself. It's safe to assume most reputable companies would use the OEM specs, but it never hurts to check.
The other thing to worry about is coil bind. That's when the valve spring is fully compressed with the springs touching each other thru the full height of the spring. We never want this and it is bad.
Now to get back to everything is connected somehow through the engine. You take the max lift of the cams you plan to purchase or currently have and compare it to the valve springs max lift that you have now or plan to purchase.
Next you should determine which cams will get you to the power level that you require. Now this is the time when you start to consider which valve spring you should purchase. One of the first things is determining the highest lift point of the cams that you'll be running. You can get this info by searching online, emailing or phoning the company that makes the cam or which the cam card that comes with the purchase of new cams.
After you figure out the max lift, it's time to find out what the desired install valve spring height that the valve spring manufacture recommends for their valvespring. It's the same to find this info as the cams. Either search online, email/phone the company or most valvesprings manufactures will have a card or sheet that comes with the valvesprings when purchased. Now it's a safe bet that most of the reputable companies will have the same valve spring install height as the application your looking for.
Another big thing to look for is if the company your buying the valve springs from, do they recommend that you buy there retainers and valves? More accurately, do they measure the valve spring height with there valve retainers and valves or do they measure the valve spring height with stock valve spring retainers and stock valves. The reason for this is, the only way to change the installed valve spring height is to change the location of which the retainer locks the valve spring keepers into place. Or to lengthen or shorten the stem of the valve itself. It's safe to assume most reputable companies would use the OEM specs, but it never hurts to check.
The other thing to worry about is coil bind. That's when the valve spring is fully compressed with the springs touching each other thru the full height of the spring. We never want this and it is bad.
Now to get back to everything is connected somehow through the engine. You take the max lift of the cams you plan to purchase or currently have and compare it to the valve springs max lift that you have now or plan to purchase.
Last edited by golgo13; Mar 5, 2010 at 02:00 PM.
