1) I looked at the shop manual, couldn't find any information/specifications on when to replace them. Can you guy help?

2) B16A versus B16B rockers - are they the same?

 

All the stock B-Series VTEC rocker arms are the same as far as I know.

As for a service interval, there isn't one. I don't think it's something Honda intended to be replaced as a maintenance item. But to answer your question: Replace them when they're worn.

 

The rockers should be the same between those heads they are both PR-3.

 

ALL oem b vtec rockers are the same.

 

If your lma's ever go out you could always replace them then. I believe the rocker arms have to come out to get the lma's out. I'm not positive though.

 

yes, they have to come out

 

there are no specs in the shop manual to measure rocker thickness. guess u have to measure valve lift?

 

just look at the rocker arm surface on the pads, if the cam is chewing into that surface and you can feel it with your fingernail, then I'd say they need to be replaced.

 

service interval is every time you change the canuter valve assembly....lol jk jk..

like this guy said just check them out see if there is any scaring and or when your doing a vlave adjust if the screw dose not have enough adjustment then there is something wrong with the rocker arm

 

Easy killer. Lol

 

the gsr rockers are bigger

 

I assume you're basing this on the fact that they have the EXACT SAME PART NUMBER

B-Series Rocker Arm Part #: 14620-P30-000

It's the P/N for all B-Series heads....hence the P30 designation

Don't post when you don't know anything about the thread topic.

ESPECIALLY don't post something as a fact if you're not ABSOLUTELY sure it's true. If you're not sure, preface it so.

I'm definitely not one to equate post number with knowledge, but in this case, I guess it would hold true.

 

The part number may be the same, but rocker arms in GSR motors did vary at some point. I can prove it right now based on the confusion I have between two sets of GSR rockers/valvetrain that came out of stock heads.

It has to do with the toothpick-wide locker arms on the sides of the primary and secondary rocker arms. Some sets of GSR rockers have 1 locking device, other years have 2. Strange, I know.

Lou

 

14620-P30-000 is the same for all b-series vtec and the part number has never changed so in a perfect world that means they're all the same minus small differences.

 

If the part numbers have P30 in them, then that means they DID change at one point. P30 part numbers didn't come into play until at the very earliest, 1992 and that would have been in japan.
The original rockers would have had a part number with pr3 in them. This suggests that the original rockers were superceded by the p30 rockers.
If you know how the honda part numbering system works, you would know this.

 

Just googled "14620-pr3-000". Haha I was right.
link:
http://www.crxsi.com/jdm/ef8-1005225...Rocker-Arm.htm

Part #5.

This page denotes that 14620-pr3-000 was indeed superceded by 14620-p30-000:

http://www.hondaoriginalparts.com/ho...&block_03=8841

 

Uhh, yeah I know how the honda part numbers work, I ****in work at honda...and due to the fact that we never had 89-91 b16's in the usa, theres no pr3 number in the USA catalog.......

 

But yes bambam, you are correct for the world market pr3 was replaced by p30, america just sucks and we didn't get b16's till the part number was p30

 

If you also type in 14620-p72-000, you do get a few results.

If anyone can read russian, please feel free to tell me what vehicle it says uses this part number:

http://www.hondaworld.ru/detail_numb...er=14620P72000

 

I was just saying they did "change". That's all. No need to get upset about it. Also, ill tell yah, there are ALOOOOOT more jdm b16 heads floating around than there are usdm. Who knows when honda went to the new rocker. It may not have happened until the first usdm model year of the del sol vtec.
And with all the bare/stripped heads floating around, it only adds to the confusion as people may be using pr3 rockers in newer castings, which may have been the case for the user above, as he stated that he did in fact have two different sets of rockers. It may have been the pr3 and p30 sets. Im curious what is different. Assuming honda did it for a reason (as they usually do), it may be beneficial to upgrade all 88-91 b16a heads (at the very least) to the newer P30 style rocker.
Only someone with an 88-91 b16a head with original rockers would be able to tell us the difference if he ordered a newer set of rockers and compared.

 

Found it.
14620-p72-000 DOES exist.
So there are at least THREE different oem Bseries vtec rocker arm types.

http://www.acurapartswarehouse.com/o...0-P72-000.html

 

Called acura about the 14620-P72-000, it's a good number but the catalog says it doesn't fit any vehicles lol, i love the honda/acura parts catalog. Only info the guy could give me was it's a rocker arm and it's on back order...

 

Interesting! I couldn't find it at acuraautomotiveparts.org. When googling it though it does appear on german and russian parts pages. Now I'm suuuuper intrigued. lol.

 

Ok, using google translate on that russian page, it lists 14620-p30-000 as the rocker arm assembly for 94 del sol vtec. THEN under that it lists 14620-p72-000 as "replacement", and it too is on back order.

 

Also found out that at some point in time, honda offered each rocker seperate(ie. pri, mid, sec) but are no longer available
14622-P72-000 ARM COMP,SEC RKR
14621-P72-000 ARM COMP,PRIM RKR
14623-P72-000 ARM COMP,MID RKR