Springs for V.2

[00blacktransam112]

I'm going to be installing a Torquer V.2 while the T/A is hibernating this winter and I had a question about valve springs. For those of you who dont know, the specs are 232/234 at 0.050" with .595/.598 lift. I will be running a 113 LSA with it as well. I was wondering what springs to get. Would I be fine running a set of 918's or should I step up to the PRC double springs. I dont beat the shit out of my car but I do drive it. Should I get the doubles for the added insurance and not really have to worry about breaking a spring? or will the 918's be enough?

[mark21742]

yup, 918's will work fine, now they are rated over .600".... I think at .625"

[00blacktransam112]

will they take the abuse and ask for more?

[mark21742]

will they take the abuse and ask for more?

I'm upgrading to a bigger cam this weekend 238/242 .595/.595 112lsa and using my same 918's without any worries

[SOMbitch]

You will just be changing springs sooner with 918's. Personally I would run a PAC 1218 or 1518 if you want a beehive. Also check install height and shim within .050 of coil bind for longer life and better valvetrain control.

[PFM]

PRC double springs for peace of mind if nothing else. Them double springs have saved many a pistons life!

[00blacktransam112]

thats what i was thinking PFM. I have no clue how to shim the springs and how to figure out coil bind and all of that other good shit that you just said. is there a writeup on it. I think i'm gonna run the doubles just for the piece of mind

[SOMbitch]

http://www.chevyhiperformance.com/te...ide/index.html

http://www.aa1car.com/library/perfor...valvetrain.htm

From Popular Hotrodding:

Another critical aspect to be aware of when contemplating a spring combination is the coil bind clearance. The coil bind height simply refers to the height at which the valvespring coils are stacked solid. This specification is listed for most springs in the manufacturer's catalog, or it can be directly measured. Clearly, this relates the spring's physical design to the installed height and the valve lift at which it will be used. As noted, the installed height minus the maximum lift at the valve gives the open height specification. This open spring height has to be above the coil bind height of the spring, plus a margin of safety. Allowing 0.060 inch to coil bind is generally considered a safe margin.

[00blacktransam112]

o that makes sense. i never knew that before. thanks

[ls1camino]

I have PAC Double Springs.

[00blacktransam112]

I have PAC Double Springs.

how you like em?

[blackSS01]

918's here and no problems. They are .625 now and .598 won't be wearing them out that fast Rev to 6,800 rpms

[SOMbitch]

Shimming to within .050 coil bind will really help valvetrain performance and extend spring life. If you just throw springs on it and you ar not close to coil bind the springs are not close to the rated seat pressure. This can lead to valve control issues and weird harmonics that shorten spring life drastically in some cases. Obviously the more aggressive the lobe the more critical this is.......

[00blacktransam112]

You learn something new everyday

[00blacktransam112]

BlackSS. do you have any dyno #'s?

[0verkill]

i have the PRC double springs with this cam on a 112 lsa and like them i also have almost the same mods as blackss and put down 403 rwhp and 385 rwtq but i have not ported the maf and still have stock 241 heads

[00blacktransam112]

cool. id be really happy with 400 at the wheels

[mark21742]

i have the PRC double springs with this cam on a 112 lsa and like them i also have almost the same mods as blackss and put down 403 rwhp and 385 rwtq but i have not ported the maf and still have stock 241 heads

sweet, I too would love to be at the magic 400+rwhp mark with mine....238/242 p&p& milled 241s here

[00blacktransam112]

mark, id be amazed if you dont make it with a bumpstick that size

[mark21742]

mark, id be amazed if you dont make it with a bumpstick that size

I fired it up last night for the first time and got the idle tuned in.....man it sounds like a nasty beast my fears of going too big on the cam are already gone