Jump to content
SAU Community

Recommended Posts

ok well im building my rb26 head and have ordered tomei 10.8mm lift cams with tomei type a springs, im just wondering how good the standard rb26 valve spring retainers are, if anyone has had problems with them failing or if i need to upgrade them. or wat upgraded ones are good to use. last thing i want is for it to drop a valve. cheers liam

Get the titanium retainers as well mate with the extra pressure of the upgraded valve springs you will split the standard retainers and i got the tomei type b valve springs and they come with the retainers.

  • 3 weeks later...

just get the supertech set up. double springs titanium retainers and good for 13mm lift. about 600 deliverd

+2

Went from another performance spring manufacture to super tech and literally went from 480rwhp too 596 rwhp.

Back to back with nothing else changed but the tune to suit th new springs that would actually work over 22 psi

  • 2 years later...

Old post, saves starting a new one

Il prob be changing my valve springs when I do my cams, I see a lot of brands like Brian Crower, hks, greddy etc that come without retainers, are the stock ones good enough for these replacement single valave springs?

Only looking at running poncams around 9.1lift

Still running standard valves but with new valve guides, seats etc

Edited by SiR_RB

To much seat pressure is not good. You need to know what it is you want first. Then build around that.

I dont see a need for so much lift. 10.5 and higher.

In short ro much seat pressure just loads up everything in line with to much stress.

Thats just my to cents.

But I guess I should have asked you what are your hp goal. Sorry

Most proberbly go type r poncams so around 250x9.1 lift,,,nothing extreme

Won't be going double valve springs as there no need for my choice of cams, just wanted to know if standard retainers will be fine with upgraded single valve springs

  • 1 month later...

Ok I got my cams now looking into valve springs

When do you need to run a titanium retainer?

How much is too much seat pressure? Is 80-90lbs seat pressure closed and about 180-190lbs open too much?

Will be running around 26-28psi boost and rev to 8200rpm

We have had GReddy springs with stock everything for years. 264 and a 272 with 9.7 lift. Used to rev it to 9500 and havent seen an issue after about 8000klms. Most of its life its spent on the dyno or the drag strip so its not being babied at all. We run 25psi apart from when its being driven to and from the dyno or drag strip ;)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Bit of a pity we don't have good images of the back/front of the PCB ~ that said, I found a YT vid of a teardown to replace dicky clock switches, and got enough of a glimpse to realize this PCB is the front-end to a connected to what I'll call PCBA, and as such this is all digital on this PCB..ergo, battery voltage probably doesn't make an appearance here ; that is, I'd expect them to do something on PCBA wrt power conditioning for the adjustment/display/switch PCB.... ....given what's transpired..ie; some permutation of 12vdc on a 5vdc with or without correct polarity...would explain why the zener said "no" and exploded. The transistor Q5 (M33) is likely to be a digital switching transistor...that is, package has builtin bias resistors to ensure it saturates as soon as base threshold voltage is reached (minimal rise/fall time)....and wrt the question 'what else could've fried?' ....well, I know there's an MCU on this board (display, I/O at a guess), and you hope they isolated it from this scenario...I got my crayons out, it looks a bit like this...   ...not a lot to see, or rather, everything you'd like to see disappears down a via to the other side...base drive for the transistor comes from somewhere else, what this transistor is switching is somewhere else...but the zener circuit is exclusive to all this ~ it's providing a set voltage (current limited by the 1K3 resistor R19)...and disappears somewhere else down the via I marked V out ; if the errant voltage 'jumped' the diode in the millisecond before it exploded, whatever that V out via feeds may have seen a spike... ....I'll just imagine that Q5 was switched off at the time, thus no damage should've been done....but whatever that zener feeds has to be checked... HTH
    • I think Fitmit had some, have a look on there (theyre Australian as well)
    • Hah, fair enough! But if you learn with this one you can drive any other OEM manual. No modern luxury features like auto rev-matching or hillstart assist to give you a false sense of confidence. And a heavy car with not that much torque so it stalls easily. 
    • Actually, I'd say all three are the automatic option. Just the different trim levels. The manual would be RSFS, no? 
×
×
  • Create New...