Lunati Dual valve springs?
08-14-2011, 06:15 AM
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Lunati Dual valve springs? Lunati Dual valve spring kits good?
Found a Lunati dual valve spring kit rated to .660" lift that comes with, seals, etc, this is the write up for the kit:
With a maximum lift capability at 0.660-inch, the Lunati kit serves the majority of popular camshaft applications.
The kit is complete with dual valve springs, steel retainers, locks, valve seals and spring locators and represents a drop-in installation for many popular LS applications.
Lunati’s retainers and spring locators are CNC-manufactured from 4140 alloy steel. The locators pilot onto the valve guides and locate the inner diameter of the inner valve springs, preventing them from abrading the springpockets in the aluminum heads.
In common with all dual-spring retainers, these new Lunati types have a group of steps machined into their underside (which locate the upper registers of the valve springs) and a bore machined to accept the 7-degree valve locks.
The locks are equipped with inner bead locks and the 7-degree interference angle between the locks and the retainers is favored by many who believe it causes the locks to clamp the valve stems tighter. Through careful CAD and FEA design efforts, Lunati engineers have developed a new valve spring retainer design using wear-favorable alloy steel, yet nearly matching the weight advantage of Titanium.
For street/strip longevity, Lunati’s lightweight alloy steel retainer is unbeatable. Viton steel-jacketed valve seals complete the kit. The steel jackets ensure the valve stem seals remain tight around the valve guides and also protect the seals should the inner springs come in light contact with them. The Viton material is ideal for resisting heat and oil, particularly some of the more aggressive oil additives that cause ordinary seals to swell and distort.
Sound like a good kit?
Found a Lunati dual valve spring kit rated to .660" lift that comes with, seals, etc, this is the write up for the kit:
With a maximum lift capability at 0.660-inch, the Lunati kit serves the majority of popular camshaft applications.
The kit is complete with dual valve springs, steel retainers, locks, valve seals and spring locators and represents a drop-in installation for many popular LS applications.
Lunati’s retainers and spring locators are CNC-manufactured from 4140 alloy steel. The locators pilot onto the valve guides and locate the inner diameter of the inner valve springs, preventing them from abrading the springpockets in the aluminum heads.
In common with all dual-spring retainers, these new Lunati types have a group of steps machined into their underside (which locate the upper registers of the valve springs) and a bore machined to accept the 7-degree valve locks.
The locks are equipped with inner bead locks and the 7-degree interference angle between the locks and the retainers is favored by many who believe it causes the locks to clamp the valve stems tighter. Through careful CAD and FEA design efforts, Lunati engineers have developed a new valve spring retainer design using wear-favorable alloy steel, yet nearly matching the weight advantage of Titanium.
For street/strip longevity, Lunati’s lightweight alloy steel retainer is unbeatable. Viton steel-jacketed valve seals complete the kit. The steel jackets ensure the valve stem seals remain tight around the valve guides and also protect the seals should the inner springs come in light contact with them. The Viton material is ideal for resisting heat and oil, particularly some of the more aggressive oil additives that cause ordinary seals to swell and distort.
Sound like a good kit?
08-14-2011, 07:31 AM
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oh sweet, yeh i just sold my 218/224 114 lsa cam with 918 springs rated to .600" lift to get a bigger cam for my 383 stroker i'm going to put in instead and and came across this kit, cam i'm looking at has .617 and .624 lift, but if get a custom cam for FI might be a .580/90 lift but they'd still be good either way if i decide to step up in cam.
08-15-2011, 02:16 PM
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NOOB ALERT
Is there such a thing as too much valvespring?
Im considering these for my build and i was wondering if a beehive spring such as the pac 1518 or comp 918 would better suit my application.
setup:
stock 243's
futral f11 (228/230 .576/.595 114lsa
comp pushrods
ls7 lifters w/ ls2 trays
Thank you guys
Is there such a thing as too much valvespring?
Im considering these for my build and i was wondering if a beehive spring such as the pac 1518 or comp 918 would better suit my application.
setup:
stock 243's
futral f11 (228/230 .576/.595 114lsa
comp pushrods
ls7 lifters w/ ls2 trays
Thank you guys
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12-08-2011, 10:18 AM
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Bump..... To keep some real world reviews coming in.
Just picked up a set of these Lunati duals. Should be going in a fresh set of 799's in the Nxt 2-3 wks. Hope there not overkill for the Eps 222/226 cam or similar I'm considering.
Just picked up a set of these Lunati duals. Should be going in a fresh set of 799's in the Nxt 2-3 wks. Hope there not overkill for the Eps 222/226 cam or similar I'm considering.
02-13-2012, 06:40 PM
#15
Working on installing my springs tonight. The seals seem to be overly tight. Are they supposed to be extreamly tight. I am lightly taping them with a hammer(using an old one on top) and they aren't budging. Before blasing on them i wanted to see if I was doing something wrong or if they should go this hard. Don't want to mess them up!
