Single or duel vavle springs
x2 ^^^^^
I plan on getting the GSC Stage 2 cams with the GSC Single Valve Springs and Chromoly Retainers. Straight from the Extreme Turbo Systems site it says:
The S2 cams are designed for those with a GT30-GT37 Turbo. No low end power is lost vs the stock cams when used with the larger turbo. The S2 cams will show gains of 40-50whp over the stock cams and in some cases more in the higher RPMS. Great for 2.0L engines revving to 9000rpms or for Stroker motors revving to 8000rpms. The S2 Cams require upgraded valve springs (check out GSC's Chro-Molly Retainers and single valve spring kit for a perfect upgrade to your valve train). Designed for a rev range of 4000-9000 RPMS(2.0L or 3000-8000 2.2L+), 500-700whp applications. Not suggested for smaller stock appearing turbo setups. S2 cams can run on Factory ECU with custom flashing.
S2 Specs gsc-6009S2
Intake 274 Duration 11.2mm peak lift, Variable Centerline
Exhaust 272 Duration 11mm Peak Lift, 115 degree Centerline
Now I'm a little confused, will it be safe running these single valve springs or no?
Ferrea dual valve springs ar good but expensive. stoptech valve springs are great they work extremly well and cost friendly i dont see you really needing them though unless you get the juns cosworths or anything that lifts more then 11 you shouldnt need to replace them. that doesnt mean look for a set of cams that peak lift is 10.99 that means 10.8 and you will be fine
p.s. if you go dual valve springs your going to need the seaters also they hold the secondary spring in place.
p.s. if you go dual valve springs your going to need the seaters also they hold the secondary spring in place.
The S2 cams are designed for those with a GT30-GT37 Turbo. No low end power is lost vs the stock cams when used with the larger turbo. The S2 cams will show gains of 40-50whp over the stock cams and in some cases more in the higher RPMS. Great for 2.0L engines revving to 9000rpms or for Stroker motors revving to 8000rpms. The S2 Cams require upgraded valve springs (check out GSC's Chro-Molly Retainers and single valve spring kit for a perfect upgrade to your valve train). Designed for a rev range of 4000-9000 RPMS(2.0L or 3000-8000 2.2L+), 500-700whp applications. Not suggested for smaller stock appearing turbo setups. S2 cams can run on Factory ECU with custom flashing.
S2 Specs gsc-6009S2
Intake 274 Duration 11.2mm peak lift, Variable Centerline
Exhaust 272 Duration 11mm Peak Lift, 115 degree Centerline
Now I'm a little confused, will it be safe running these single valve springs or no?
When you've done the upgrades to protect yourself from failures of rod bolts and valve springs, then you have to look at other areas where the engine can be damaged by high RPMs. You're not out of the woods, you've simply done your best to protect yourself against the two most obvious areas of potential damage.
supertech chromoly springs
supertech retainers
GSC 280 CAMS
GSC 280s @ first start up
GSC 280s idle
:O)
supertech retainers
GSC 280 CAMS
GSC 280s @ first start up
GSC 280s idle
:O)
Where can I rev to on HKS 272's without upgraded springs?
...
The Evo I just bought is equipped as such. Why... I simply cannot explain aside from stupidity...
I have BC 272's & their single spring kit in the DSM, and I have had no problems well into the 9k rpm range.
But the lift on the BC 272's is nowhere near 10.8
7-7500?
...
The Evo I just bought is equipped as such. Why... I simply cannot explain aside from stupidity...
I have BC 272's & their single spring kit in the DSM, and I have had no problems well into the 9k rpm range.
But the lift on the BC 272's is nowhere near 10.8
7-7500?
Rick, what I was trying to make sure you understood was that motors with stock rod bolts have experienced bolt stretch and related failure within the factory redlines. You may or may not be safe revving to 8000 with stock rod bolts, but others have had expensive failures at those levels. You can find numbers who have posted these experiences on this board. I tend to err on the side of caution, since upgraded rod bolts are much cheaper than a complete shortblock, which is the minimum you'll likely need if you have a rod bolt related failure.
When you've done the upgrades to protect yourself from failures of rod bolts and valve springs, then you have to look at other areas where the engine can be damaged by high RPMs. You're not out of the woods, you've simply done your best to protect yourself against the two most obvious areas of potential damage.
When you've done the upgrades to protect yourself from failures of rod bolts and valve springs, then you have to look at other areas where the engine can be damaged by high RPMs. You're not out of the woods, you've simply done your best to protect yourself against the two most obvious areas of potential damage.
So, wait.
wth do I need with SuperTech or Ferrea springs?
I'm looking at doing a dual spring upgrade myself, however, you guys have thoroughly confused me with different people arguing that you need this or that.
wth do I need with SuperTech or Ferrea springs?
I'm looking at doing a dual spring upgrade myself, however, you guys have thoroughly confused me with different people arguing that you need this or that.
supertech is a lot cheaper and will work perfect
u want springs and retainers
http://www.amsperformance.com/store/...roducts_id=594
u want springs and retainers
http://www.amsperformance.com/store/...roducts_id=594
