is a spring a spring?
 

here i go, what seems to be the best valve spring set up for a 1999 hp500 sr.#OL600036? i've heard from some to use comp cams 929-16 with 99961-16 crane retainers and 99098-1 crane locks. others say only use isky 8005a springs and the stock retainers and locks. the specs on the springs show different seat pressures and pound rates. is a spring just a spring????????

thanks sutphen30 i'll go with the iskys. is there a better retainer than the crane 99961-16? 10 degree locks are better than 7, right? i've also heard talk about viton seals, where can i find them? thanks again.

Vitons seal too good. Boat needs to pull a little oil into the guide. Yeah, teflon is good.

I deciede to get the 929's for my 500 EFI. The question is, can I re-use the stock (Crane?) retainers and locks or do they need to be replaced at the same time?

Half my gear head friends say I must get Ti retainers and the other half say they make no difference @5400.

A hundred bucks is a hundred bucks but I don't want any problems later on.

THANKS!!!!!

F

I have 270 hours on them.

Do the super 7 degree locks fit the same steel retainers?


F

Check out Comp Cams new 26120 springs and technology. These springs will do everything the cam in the HP500 needs and with the smaller valve system mass thay won't beat the hell out of the lifter pins, which are the weakest link in the big block valve system.
Check it out!
Raylar;)

I just had my heads gone through - 250 hours on a blower motor. The springs were good (Isky 8005A), so I bought another set for a third set of heads I'm building. I bought them from Flatlander Racing, and they recommended the Titanium retainers and 10 degree locks. This is also what my engine shop recommended, so that's what I went with.

Hey Steve,

Post some new pics of your Cafe re-fresh!!!

Good to see you in Miami!!!!

Kurt

Always a pleasure to see you also.

Nothing new to post right now. I'm doing my garage work right now like putting engines together, painting parts, buffing blowers, etc. March will be my prime "bolting-on" month. I'm still targeting April 1 for launch, but not sure if I'll make it.

hey raylar, have you or someone else used those beehive springs #26120-16? 155lbs on seat at 1.880" , 377lbs open, and 370 rate. seems pretty good for not being a dual spring.

Talked to the people at Comp Cams and they have seen 10 to 15 horsepower on big blocks on their dyno with these new springs and no harmonics or valve float. They also have a spintron that they ran these springs on up to 6500 rpm with no problems. I think this is a great new spring. Our new eibach spring we designed and built for our new 496 aluminum heads is the same basic spec and we had similar results and are going to use this spring exclusively on cam lifts to .650.
Raylar;)

Re: is a spring a spring?
 

I ordered all the stuff to do it, ( 26120
springs, the recommended 795 retainers,
612 locks, 4697 spring locators, 4754 shims)
started checking installed height, I was about
.150" too short, leave out the spring locator,
it was about .090" too short.

I'm aiming for 1.88"

Called their tech line, told them the application,
their suggestion.......have the spring pockets in
the heads machined........not the answer I was
looking for........so, back to jeg's they went.

Until they come up with a different retainer,
you can't get there from here. :(

Re: is a spring a spring?
 

the comp hi tech are very good, the set i have used went to 8500 with 700 lift with no problems

but if you want the best spring all around, call PSI springs, they are costly but they are the best you can buy

Re: is a spring a spring?
 

You want any spring made from Super Clean Chrome Silicon. This is an endurance type of material that was developed in the early 90's to have the spring rate of Tool steel but the longevity of Chrome Silicon.

Chris

Re: is a spring a spring?
 

1. Titanium retainers not only have the benefit of being lighter, they are also much more fatigue resistant. Remember, it isn't the static weight we're talking about here- it's the point in time where the valve stops moving but the mass of the retainer wants to keep moving. Ti retainers are going to make life a bit easier on your valves.

2. Heat kills valve springs. The best way to increase lifespan and reliability is to have your springs treated with a thermal dispersant coating Most high performance valve trains have greatly reduced oil flow (rollers) and that means reduced coolant to the springs. On top of that, the springs have a small surface area to conduct heat out from. Thermal dispersant really helps.

Re: is a spring a spring?
 

something you might not know chris is that Ti retainers slowly get eatin away, next time you change your oil, cut your oil filter open and look at it, you should see little silver specs
the reason i know this is because i work on 2 race cars making atleast 800hp N/A that run in the low 9s and we have to replace the Ti retainers more often then the steel

but you are right in that they are lighter

just something to think about