type-s heads came with different valvespring combinations. I believe that 02-03 had different combinations of dual valve springs. The 04 had singles.

I'd recommend going with new valves. However if interested, I have 5 or 6 intake valves.

 

Cool thanks, is there a way to find out what yeah head i have? i remember the bseries had a stamp where u could figure out what year it was....but is there a way on the S head to know the year?

Yeah as far as the valves go ill probably just buy new ones ...thanks anyways

As far as the valve springs go... is the single just as good as the dual valve spring combo? im stickin with all oem parts... soo aftermarket is something i dont want.

 

The 02' came with dual springs, mid 03' they went with dual exhaust and single intake springs, 04' they went single on both.

I have had excellent success with the OEM spring combo that IPS lists for the K2's, on more applications than the K2's.

 

easiest way to tell is by what color valve springs you have someone posted a thread of how to identify based on spring color and dual/single setups.

IPS had an oem recommended combo that was good up until about 8500rpm or so. It is on their web page.

There are a number of good aftermarket valvespring setup. I went with the Eibach EVS dual spring setup. Costs roughly the same as an oem setup. I think they are good up until around 9500rpms or so. I have no intentions of going anywhere near that high, but considering I plan to do hpde events, I wanted the extra reliability.

 

easiest way to tell is by what color valve springs you have someone posted a thread of how to identify based on spring color and dual/single setups.

http://www.k20a.org/forum/showthread.php?t=19495

Here are the pics:
http://www.k20a.org/forum/attachment.php?attachmentid=4591&d=1161037111

 

Cool ill have to check that IPS thing out... i just want a fun k24/s with oem parts soo i probably wont need to ever rev past 8k im sure. If i remember correctly i think i had orange/blue single springs.....

 

I have a Blue color for exhaust, and a dirty yellow- brownish color for intake

 

anyone have a link to this IPS site? thanks again

 

found it! http://www.intrinsicperformance.com/

 

Well i checked out that IPS website and im wondering what kinda of gain i would see from those k2's , k24/s with tsx pistons... anyone?

Ok so i was searching to see where to buy these IPS k2...and no luck is there a back order? also how much do they run? thanks again guys ...couldnt have gotten as far as i have without this site!!!!

 

There $1900 with the Eibach DVS and Retainer Combo.

As of right now, eat your heart out K20a.org.

I have 8 sets available to SHIP!! want them overnight SCTuned can do it.

 

So are some springs good enuff to use with aftermarket cams? But!! How long will they be able to hold up to the added abuse of high revs and more lift?

 

This is the parts list from IPS for the OEM upgraded valvetrain, this is only recommended for stock bottom end motors:
Dished retainer - 14765-PRB-A01
Yellow outer spring - 14761-PCX-003
Red inner spring - 14752-PRB-A01
Max safe rpm: 8500rpm

 

i'd go with aftermarket springs if its apart just in case you mis-shift and over rev the motor you wont trash anything in the head... do it once with stock stuff and you will probably drop some valves.

 

AcuraAutomotiveParts.org has the retainer listed as being from:
RSX '02 - '06
TSX '06 - '07
As far as the change, that was just in the 05 TSX's, so make sure you get the PRB cotter's, not the PR7's

Part Number 11 in the pic

More info is in the sticky in this section:up:

 

If you want to run a dual spring set up (aftermarket) on a Z1 head do you also have to replace the valve seats?

 

no you need to change out the spring seat (or Spring Base)

 

y do u think the started using single valve springs instead of the daul valves?

 

people didnt know how to drive and were destroying their engines because they would mishift.. the newer single spring design gave a lil more .

 

?????? a little more what ?

Please enlighten me on this one... I am interested in your theory behind this.

 

That is false. Spring material, length, diameter, number of coils and coil diameter determine the spring characteristics. Dual springs, when designed properly, can negate harmonics at specific RPMs, reducing valve float. Their down fall is extra mass.

 

Very interesting to hear some ideas.


One of the reasone Honda changed was because of cam design changes.

 

I bet production cost played a role as well.

 

i bet production cost played a role as well.

+1...

 

Been looking for this thread! Subscribed.

 

Back from the dead, I have the red dual exhaust springs and single yellow intake springs, would it be ok to just purchase a set of red inners for the intake side and be good to go or are the red outer springs that much weaker than the yellow ones?

 

I believe some K20A2's had dual springs and some single springs depending on year. I'd think either setup is good to rev to a bit past 8600 RPM. I forgot the year info.

Edit: Oh... That info was all on page 1. Whoops.

 

I have some questions - & need help asap

at thi moment we are installin toda cams & tod (single) springs in a TSX that curretly has supertech dual valvesprings. do I need to be worried about the seats or the retainers? we have oem 02-03 rsx retainers that we were going to use for the time being

 

No.
You can run single springs on dual seats.. You just cant run dual springs on single seats....

 

sooo is the case the same for the retainers? thanks for the quick relpy

 

Correct. Same goes for the retainers.

 

Funny I have a 02 Type S and has dual spring/single combination. I expected to see dual on both...WTF is going on with this motor?

 

Late year production 02's may have received the change seen in the 03's.

 

Just my $0.02... found this interesting write up about the part nrs required for the '02 rsx DUAL setup... i too had made the mistake of ordering the 14765-prb-a01 retainers, and they are NOT for the dual spring setup. correct pn is 14765-prb-a00. i will be receiving them as of soon, and will take pictures to back this.. see also:
(Author unknown, but a GREAT write-up..)

Eibach only makes one type of uprated EVS spring that fits all those models, that's why they say "they're all the same"... the OEM parts are different though.

Here's the part #s and prices I have from the dealer. the number in brackets is quantity required, followed by unit list price. what they call a "valve cotter" is the keeper (2 req'd per retainer); there's 2 part #s for those but I think they're interchangeable.

'02-03-04 RSX BASE
14761-PNE-003 SPRING, IN. VALVE [8] 6.88
14761-PNE-004 SPRING, IN. VALVE [8] 6.88
14762-PNA-003 SPRING, EX. VALVE [8] 6.88
14762-PNA-004 SPRING, EX. VALVE [8] 6.88
14765-PNA-000 RETAINER, VLV SPR [16] 2.69
14775-PT0-000 SEAT, VALVE SPRING [16] 2.93
14781-PR7-A01 COTTER, VALVE [32] 2.13

'02 RSX-S
(engine #1408510 and up)
14761-PCX-003 SPRING, IN. VALVE [8] 6.60
(thru engine#1408509)
14761-PRB-A01 SPRING, IN. VALVE [8] 6.05
14751-PRB-A01 SPRING, IN. VALVE [8] 5.42
14762-PRB-A01 SPRING, EX. VALVE [8] 6.05
14752-PRB-A01 SPRING, EX. VALVE [8] 5.42
14765-PRB-A00 RETAINER, VLV SPR [16] 2.69
14775-PRB-A00 SEAT, VALVE SPRING [16] 2.33
14781-PR7-A01 COTTER, VALVE [32] 2.13

'03-04 RSX-S
14761-PCX-003 SPRING, IN. VALVE [8] 6.60
14762-PCX-003 SPRING, EX. VALVE [8] 6.60
14765-PRB-A01 RETAINER, VALVE SPRING [16] 2.58
14775-PRB-A00 SEAT, VALVE SPRING [16] 2.33
14781-PRB-A01 COTTER, VALVE [32] 2.07

'03 S2000
14761-PCX-003 Intake Valve Spring
14762-PCX-003 Exhaust Valve Spring

as is now known, the '03-04 RSX-S use the same valve springs as the '03 S2000. The '02s had the dual spring setup that used an older S2K/Type-R combination. Late in 02 they changed the intake side to single springs and subsequently did the same on the exhaust side.

Greetings
Mounty