Valve Springs for RB's

[mcfly]

I would like to talk about valve springs. Who makes them for our cars, what spring pressures are available. Max lifts with different springs.

After that we can get into the theoretic rpm limits of each.

I will start with my favorite company
-------------------------------------------------------------------
JUN RB26DETT (+.5mm offset retainers needed for 10.8mm cams)
1009M-N001
- 38mm set length
- 27.5 max compression
- 84lb seat pressure
- 168lb lift pressure


JUN RB26DETT for 11.35mm lift (require +1.5mm offset retainers)
1009M-N004
- 39.5mm set length
- 28.5mm max compression
- 87lb seat pressure
- 166lb lift pressure

[Allan74]

...and I will continue with mine:

Manley Valve Springs, RB26DETT
Part# 22175-24

- OD/ID - 1.10"/0.775"
- Seat Pressure - 80@1.535"
- Open Pressures - 197@1.114 (197@1.114)", 237@1.0"
- Max Lift - 0.535" (13.6mm)
- Coil Bind - 0.95"
- Rate (lbs/in) 294

Part# 22175-24 ...... 24 Springs.
Part# 23175-24 ...... 24 6° Ti Retainers.
Part# 13012-8 ........ 8 Locks, 6° Beadloc (3 sets required, 24 total)
Part# 26175K ......... 24 Springs, 24 Titanium Retainers, 24 Locks.

** Use with OEM Spring Seats.

http://www.manleyperformance.com/sc/mk/nissan/rb26_kits.shtml (http://www.manleyperformance.com/sc/mk/nissan/rb26_kits.shtml)

[Skym]

Interesting subject.

I think some use Ferrera valve springs with RB heads downunder -

http://www.ferrea.com/sportcomp-springs-valve-springs.php

Price -

http://cgi.ebay.com/ebaymotors/FERREA-VALVE-SPRINGS-RETAINERS-NISSAN-SKYLINE-RB25-RB26_W0QQitemZ170431214224QQcmdZViewItemQQimsxZ201 00112?IMSfp=TL100112222007r20384

Max lift is 12mm.

Tomei valve springs -

http://www.tomei-p.co.jp/_2003web-catalogue/e095_valvespring.html

Max lift is 11.5mm.

Naprec valve springs, valve guides, etc (popular in Japan with race spec RB26 head) -

http://www.naprec.co.jp/contents/engine/n_rb26.html

Look at link above for specs.

For RB20DET (or RB26), there's Supertech valves, valvesprings, etc -

http://www.supertechperformance.com/

Supertech are probably the best valve springs, etc available, as they are used in F1, Nascar, IRL, etc. If I had to rebuild my cars RB20DET head, this is what I would use.

[Allan74]

Wow, thanks for the links.

That was exactly what we wanted, hence our first 2 posts..........

[Skym]

Those are some that I know of. There's probably more options.

Also for RB26, HKS -

http://www.hks-power.co.jp/products/engine/

[Allan74]

Skym, work with me here for a sec.....

Do your posts look anything like mine and Mcfly's ? We are looking to build a knowledgebase.......NOT A LINK BASE.

[Skym]

I see.

I thought it was copyrighted, so couldn't post specs?????

[Allan74]

I see.

I thought it was copyrighted, so couldn't post specs?????

So.....that's it then ?

[RABBIT]

less scwabling more info .
i always wanted to know what material different companies make their springs out of its the only specs they dont seem to release generally = /

[Skym]

So.....that's it then ?

Some country's have internet copyright laws. I hear it's happened in the US, UK and is being implemented in other country's. The ISP's enforce it with bans, etc.

[rb-racer]

No company is ever going to go after you for posting their product information somewhere on the internet. It's free advertisement. Your posts have a lot of good information usually but why not bring it a little closer to home, spend some time leaving a post that has content in it rather then links out of it? Just a little constructive criticism.

[Allan74]

Another great thread ruined.....WONDERFUL.

[BNR32]

Get this thread back on track shall we...

Brian Crower

Kit Number: BC0230
Spring Number: BC1230
Retainer Number: BC2230
Seat: 1.550" @ 80 lbs / Open: 1.050" @ 220 lbs / Coil Bind: 0.900" (no machine work required)

Description: Single spring, titanium retainer.

[mcfly]

I have edited my first post to show correct lbf for jun springs

[mcfly]

Cosworth RB26 valve springs

p/n 20000169
seat pressure - 81lb @ 41.9mm
max compression - 212lb @ 29.9 mm
max lift - 12mm
coil bind - 28.4mm