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Discussion Starter · #1 ·
PLEASE READ...different k20's

ookay.. so lets say you have 3 different k20's side by side... the k20a.. k20a2.. and k20a3... what are all the differences between the 3 aside from horsepower and engine code and stuff....

one thing i was told was the the k20a has plastic intake manifold while the k20a2 and a3 has the aluminum runners.... so what is your guys thought on this... also does the k20a have to come with a red valve cover to be a k20a or can it be different..

and last question is how do you tell if the head itself is a k20a or k20a2 or k20a3 without opening up the valve cover
 

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k20a3 is actually the one with the plastic intake manifold. k20a and k20a2 have aluminum manifolds but are different. type-r has longer runners i believe. k20a is the jdm type-r so yes it has the typical type-r red valve cover. um i cant think of anymore visual differences off the top of my head but if i think of more i will let you know
 

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Like I said -

Originally Posted by Dean NZ
I gave this some thought last night and maybe it’s worth putting together a “K20A.org” (queue – Nikos) chart/spreadsheet that lists off the modification, options, combinations for each engine and the bits you can change, modify or remove, the net results and the cost ?

Seems to me there’s a lot of people on here searching for “bang for the buck” but there is some much “miss information/confusion/product hype” that is turns into rumour or speculation and the group is none the wiser.

I understand there are variations between engines and good tuning and bunch of other variables but at least a rough is guide is a good start to the novice tuner. Maybe the results in this chart/spreadsheet have to be proven by a certain number of people before its considered fact or accurate.

I know you will cringe when you read this Derek, but you and Hondata have a wealth of information (experience, dyno chats etc) and so do a lot of others (Crower, Speed Tech etc) and there’s those people who will object, shun or outright say it wrong no matter what………….BUT if the chart is moderated by “sensible humans” who use good fact and reasoning (Nikos & his team), then it’s up to the individual person if they use the information or not.

Comments anyone ?
 

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Sounds like a good idea for an article in a magazine. Ideally it is a good idea, don;t get me wrong. I just find it hard to believe that someone would take the time to compile all this information with different modifications and make sense of it. Different cars, dynos where each motor has been modified a little bit different.

Comparing parts like manifolds, headers, intakes is not that hard to do but still require some time and dedication... And let's not forget, dynos cost money.

Let me give you another scenario. Product A makes 20 more whp vs product B that makes 16whp more on my car. Is that difference enough for me to declare Product A as a winner? What is product B is an active sponsor of the website and product A company never replies to my emails and has nothing to do with my website? Should I market their product for them? Should I promote their product to all k20a.org members because it makes more power on a certain application? I hope you see where I am getting at... If you or anyone else decide to do a test like that or compile a list or spreadsheet like this I would have no problem with it. But when "I" do something like this it becomes more than just the average test/opinion post.

A while back I tried to put together a test comparing 5 K20a EG headers.... 4 out of 5 companies were willing to do it... That one company that didn't was the header that would most likely win the shootout... I have actually talked to an import magazine editor about this issue... Instead of comparing products , it is always better to just focus on performance with a combination of parts.

I want k20a.org to be a place where people can read and contribute K series information. Everyone has an opinion and most people are emotiannaly attached to their projects. Just because company ABC is not a sponsor doesn't mean we don;t want to see their product or see how it performs... I just cannot do all the work for you guys. Having a full time job, family, kids, the website and a few projects is enough. I do have some plans to make the site even better but to be honest for the most part it is put out of my hands.. You make it what it is. A lot of knowledgable and good people take the time to post here and I really appreciate their time. Sure from time to time there are differences but we all here because we agree the K motor deserves more attention than it is currently given.

Thank you for all the support,

Nikos
 

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Discussion Starter · #7 ·
reason why i ask this is being cause i was looking at another persons swap the other day... its funny cause i was looking at his motor and the engine code is a k20a and has the jdm ecu but if you look at the other things like the intake manifold its made of plastic but has long ass runners which looks like the runners run around the housing of the intake manifold before actually getting to the main portion of the intake manifold...the the valve cover is silver with black lettering.... so he says that when he bought it that it is a k20a with 6speed lsd.. so how would i be able to tell if the head and tranny is really a type R
 

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nikos said:
Sounds like a good idea for an article in a magazine. Ideally it is a good idea, don;t get me wrong. I just find it hard to believe that someone would take the time to compile all this information with different modifications and make sense of it. Different cars, dynos where each motor has been modified a little bit different.

Comparing parts like manifolds, headers, intakes is not that hard to do but still require some time and dedication... And let's not forget, dynos cost money.

Let me give you another scenario. Product A makes 20 more whp vs product B that makes 16whp more on my car. Is that difference enough for me to declare Product A as a winner? What is product B is an active sponsor of the website and product A company never replies to my emails and has nothing to do with my website? Should I market their product for them? Should I promote their product to all k20a.org members because it makes more power on a certain application? I hope you see where I am getting at... If you or anyone else decide to do a test like that or compile a list or spreadsheet like this I would have no problem with it. But when "I" do something like this it becomes more than just the average test/opinion post.

A while back I tried to put together a test comparing 5 K20a EG headers.... 4 out of 5 companies were willing to do it... That one company that didn't was the header that would most likely win the shootout... I have actually talked to an import magazine editor about this issue... Instead of comparing products , it is always better to just focus on performance with a combination of parts.

I want k20a.org to be a place where people can read and contribute K series information. Everyone has an opinion and most people are emotiannaly attached to their projects. Just because company ABC is not a sponsor doesn't mean we don;t want to see their product or see how it performs... I just cannot do all the work for you guys. Having a full time job, family, kids, the website and a few projects is enough. I do have some plans to make the site even better but to be honest for the most part it is put out of my hands.. You make it what it is. A lot of knowledgable and good people take the time to post here and I really appreciate their time. Sure from time to time there are differences but we all here because we agree the K motor deserves more attention than it is currently given.

Thank you for all the support,

Nikos
Spoken like a true Admin :up:
 

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Nikos,

I hear what your saying commercially and I believe that could be got around by offering a range in the results: 5 - 15 hp etc. Or in fact the manufactures claims doesn’t really matter…….. I thing a quick reference of the products and methods (head porting) that would provide a rough idea of what is good - bang for the buck. Saves hunting through lots of posts as well.

Maybe it could be a user input – have different title specific to a mod with entry fields (Not a thread - just the results & a product)

The discussion on here is great and I think it's one of the main reasons why people come to the site - to seek knowledge and to provide knowledge - whether is be by experience or trial & error.

The Lotus Elise has a site FAQ (www.elise-faq.info/) and that has more "fix it" and general knowledge stuff (cause the Lotus needs it !).

Anyway just an idea ?

D
 

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xproductionz said:
reason why i ask this is being cause i was looking at another persons swap the other day... its funny cause i was looking at his motor and the engine code is a k20a and has the jdm ecu but if you look at the other things like the intake manifold its made of plastic but has long ass runners which looks like the runners run around the housing of the intake manifold before actually getting to the main portion of the intake manifold...the the valve cover is silver with black lettering.... so he says that when he bought it that it is a k20a with 6speed lsd.. so how would i be able to tell if the head and tranny is really a type R
sounds like a k20a3 but there are many people who want the jdm parts like valve cover and manifold cover so maybe he sold those parts and swapped others. look on the block near the intake side next to the tranny for the engine code inscribed on the block.
a way to figure out if it is a 6sp tranny is to play with the gear selector on it. find 6 gears and you will know.
 

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Discussion Starter · #11 ·
civictype-s said:
sounds like a k20a3 but there are many people who want the jdm parts like valve cover and manifold cover so maybe he sold those parts and swapped others. look on the block near the intake side next to the tranny for the engine code inscribed on the block.
a way to figure out if it is a 6sp tranny is to play with the gear selector on it. find 6 gears and you will know.
i know what you mean..... i know the block says k20a but now my question is how can you tell with the HEAD and TRANNY... my friend has a si motor which has the k20a3 which has the aluminum intake manifold and it does not look anything like the motor now...i have seen the plastic intake manifolds before and they have the same shape of the aluminum manifolds but for some reason this manifold has longer runners which wrap around the cyclinder before actually going in...anyone can answer these questions or is there a website that has all the different types of k20's on there?
 

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Discussion Starter · #12 ·
okay someone correct me if i am wrong.. there are 3 types of type R motors based on my research...

The Japan DC5
The Japan EP3
The UK K20

they all have the k20A engine code on there but in addition to that the other code is all different... in japan the DC5 type r has PRC on the motor and the EP3 type r has PRD on the motor and in the UK the K20a there has PRA... if this is true then here is a set of questions

1. whats the difference between the 3 (if any) and is all three really type R?
2. whats the engine code of the USDM type s... i know it will say k20a2 but what is the other code say.. PR_?
 
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