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Performance Valve Springs

lcxu105

By lcxu105,
in Engines & Forced Induction

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AngryRB Grand Master

AngryRB

Posted
Posted

I was told by the engine builder/shop that reconditioned my neo head to use performance valve springs at a minimum with new retainers, said he's rebuild some engines cause the retainer cracked..

boostn0199 Grand Master

boostn0199

Posted
Posted

Thats interesting - cause i was looking at a set of the Tomei type A for rb25. So no good then?

Ive used the tomei type A for my poncams for years theve worked fine but yeah depends what cam your using.

33GTRV Mentor

33GTRV

Posted
Posted

Ive had performance springs fail once in an engine. SBF at 9300rpm. Thats about it. I personally run them in my tractor with 40psi and havnt had a drama. Its like every other item on the market. If wrongly installed or abused, failure is imminent

Roy Grand Master

Roy

Posted
Posted

For everyone. Supertech don't do a spring for the neo.

Only way to use supertech valve springs is to change valves as well. Straight from Jim at the only supplier in Australia.

LOL. I hear you. Just like all the posts saying not to use Tomei/HKS/Jap when none offer NEO springs either :)

I am going Perforance Valve springs and retainers simply because I am hoping they aren't any worse than new std OE NEO RB25DET springs.

If I could afford Ferrea (Part no. S10078 dual springs and require their Ti retainers to be used) I would hand over the cash, but given my engine is only running small 252 Tomei cams the main reason for wanting springs is boost is expected to be up around 26-28psi and revs around 8,800-9,000rpm and guess std springs may not be the greatest at those revs, boost and expected power at that level

jet_r31 Mentor

jet_r31

Posted
Posted

Been watching this thread. Been using stock neo springs in mates car, 260 ponnies, 32psi and no issue atm

but building a 25/30 so was just going to get the performance spring and retainer set .

Not sure what everyone is going on about in this thread but, i have only ever seen the performance springs and double ferreas for sale for neo's.

Ive used the preformance springs in sohc rb30s with no problems

cheers

darren

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