KA=CA?

Post by **evildky** » Sat Sep 18, 2004 7:19 pm

something that I'v kinda wondered....the KA and the CA are very similar, I'v wondered if the KA is just a CA with larger bore? or stroke and or deck height? I know they both came with the NAP-Z head at some pointthe CA's seem to be from 1.6-2.0 and the KA's seem to be from 2.2-2.4I'v delt with the old CA's and the NAP-Z heads years ago and never really messed with the KA, so I don't have much to compare it with, just something I've wondered, anyone know ?

Post by **SeVa-S13** » Sat Sep 18, 2004 7:38 pm

And CA's are just RB's with two less cylinders with different bore and stroke ratios...

You can pick out similarities between alot of engines.

Post by **Nismo1182** » Sun Sep 19, 2004 12:01 am

Its not a mini RB and its not a KA, it just share similarities because they were designed in the same era.

Post by **float_6969** » Sun Sep 19, 2004 4:50 am

They're not identical, but similar. The CA was kind of the test bed for the rest of them as it's basically the oldest, but they were all pretty close in the time that they were designed.

Post by **Nismo1182** » Sun Sep 19, 2004 6:50 am

Dont forget the VG series. The CA shares some VG characteristics also and the VG is older.

Post by **McAdam** » Sun Sep 19, 2004 11:32 am

nope, the KA is actually related to the old *** L series motors. infact you can bolt a KA head onto an L or Z series block. the CA is a different animal all together. It has smaller bore centers and is smaller in over all size than a KA. maximum bore in a KA is like, 91MM maximum on a CA is like 86mm I think. not to mentiuon the chain vs. belt timing stuff and a whole host of other things

McAdam

Post by **evildky** » Mon Sep 20, 2004 10:47 am

L's use a chain, Ka's used chain and belt depending on year right? and ca's all use chains?

Post by **mikesim** » Mon Sep 20, 2004 10:58 am

evildky wrote:L's use a chain, Ka's used chain and belt depending on year right? and ca's all use chains?

CA's use belts.

Post by **paul_s13** » Mon Sep 20, 2004 11:35 am

Nismo1182 wrote:Dont forget the VG series. The CA shares some VG characteristics also and the VG is older.

VG's and CA's have exactly the same hydraulic valve lifters, same part number.

Post by **boost_boy** » Mon Sep 20, 2004 11:45 am

The KA and the CA are totally different! No comparision. The guys are right about the RBs and VGs, but nothing doing with the KAs and SRs and Ls.

Dee

Post by **evildky** » Tue Sep 21, 2004 11:21 am

belts !? so the newer jdm CA's are quite different from the old US CA'S as they used chains

Post by **evildky** » Tue Sep 21, 2004 11:23 am

I just thought there might be a connection with the apparent displacement cutoff of the ca's being where the KA's pick up

Post by **NeedCAforS13** » Tue Sep 21, 2004 4:07 pm

what CA are you thinking of that used a chain? the old CA18ET (US 200sx) used a belt, as did the CA20E that came in the sentra... i think you're confused.

Sean

Post by **evildky** » Tue Sep 21, 2004 7:18 pm

1982 nissan stanza, first vehicle in the us to be Nissan only badge, had a CA20 which I recall having a chain, I just got my old FSM and sure enough it was a belt, guess the years have a way of fooling us old datsun geeks, and the 200sx N/A of similar vintage had the same CA20

Post by **evildky** » Tue Sep 21, 2004 7:39 pm

paul_s13 wrote:
VG's and CA's have exactly the same hydraulic valve lifters, same part number.

the nap-Z head found on the early CA's didn't use lifters, it was a pretty simple clean design

Post by **boost_boy** » Thu Sep 23, 2004 6:47 am

No chains on the CA series period.

Dee

KA=CA?

KA=CA?

Re: (evildky)

Re: (Nismo1182)

Re: KA=CA? (evildky)

Re: (mikesim)

Re: (paul_s13)

Re: (evildky)

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