i have a chance to get a k20 swap from an rsx from a friend and was wondering how much it is worth.. the motor has 33,000 miles on it and includes
complete swap with wiring harness, keys, ignition, shifter cables, shifter box etc

how much would this be worth, he wants to sell it cheap so i am wondering how much all this stuff would be worth and i figured a couple of you all motor people would know

 

dont waste your time with the base model get the a2

 

for a third of the price im sure it can be made alot stronger then the a2

 

base model built with a2 crank, oil assy, aftermarket rods, pistons and a2 head can be better than a stock a2...for a full swap of the k20a3 i wouldnt pay much over 1100.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtecspeed1320 &raquo;</TD></TR><TR><TD CLASS="quote">base model built with a2 crank, oil assy, aftermarket rods, pistons and a2 head can be better than a stock a2...for a full swap of the k20a3 i wouldnt pay much over 1100.</TD></TR></TABLE>

Damn, thats alot of stuff to make the a3 comparable to the a2

 

ha just rebuild the WHOLE thing ya its gonna be better than the stock a2

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jeremyinlinepro &raquo;</TD></TR><TR><TD CLASS="quote">Well I finally got another one of my projects finished and dynoed. This is a stock 02 Civic SI K20a3 block and head with type-s camshafts, my race header, and a k-pro. This dyno was done with just the header. There is no exhaust hooked up. That is why the hp#'s are a little high to begin with. The blue line is the stock motor, stock cams, k-pro, and race header. The red line is the stock motor, type-s cams, k-pro, and race header.


I'm sure you think that type-s cams won't work in a k20a3 head but I assure you there is a way to make them work and retain a good idle.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jeremyinlinepro &raquo;</TD></TR><TR><TD CLASS="quote">You run the type-s rockers with the type-s cams. It is an alternative to swapping the entire head over. If you purchased brand new OEM parts it would cost you about $1800.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jeremyinlinepro &raquo;</TD></TR><TR><TD CLASS="quote">You have to lock part of the rockers to bypass the lack of lost motion assemblies.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jeremyinlinepro &raquo;</TD></TR><TR><TD CLASS="quote">Here is the how I got the K20a2 cams to work on the K20a3 head. You need the K20a2 cams (or type-r, tsx, crower...), K20a2 rockers and pins, and k20a2 rocker shafts. The pins in this picture are how they come in the A2 head

You have to switch the pins in the left and middle rocker like this picture

This locks the left and middle rocker together so that the middle rocker will not bounce around due to the cylinder head not having the lost motion spring.





This makes the left valve always ride on the vtec lobe and the right valve rides on the non-vtec lobe. When vtec is engaged by the solenoid it locks all three rockers together the same way the factory does and you have a regular working vtec.
</TD></TR></TABLE>

https://honda-tech.com/zerothread?id=1543803

https://honda-tech.com/zerothread?id=1553082

 

Is it locked in vtec or is it locked just so it works as it should?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ..Eric.. &raquo;</TD></TR><TR><TD CLASS="quote">Is it locked in vtec or is it locked just so it works as it should?</TD></TR></TABLE>

One valve would be locked in VTEC, and the other will switch like normal when the ECU tells it to. Quite clever...

Sorry to thread-jack, but can anybody tell me if these K20 motors use a pilot bearing in the center of the flywheel? I look at the parts diagrams, but all I can find is this small bushing (#3)...



I didn't have any luck in the RSX/EP3 forum with this one...

 

Haha, thats wierd.

I wonder if theres a difference in performance.

If I had an A3, id just get some cams for it.

 

a3 is a waste dont even try..lol its like taking an HX motor and trying to make it a beast but dont get me wrong this is only my opinion on this topic.

 

Depends on the price. They can make great daily driver motors. Even better if you put an CRV or Accord k24 in the place of the k20 and just use the tranny, harness, ecu, and all the other things from the swap.

 

i would pay no more than 1000 for the whole swap. It's good just to get your car K-Ready. Build another motor while this one is in the car.

 

Is there any proof that the A3's are weaker?

 

I'd totally rock an A3, especially if you can get the whole swap for cheap. Then mod it with the money you have left over.

 

Does the A3 use the same oil pump as the A2.

What is weaker in the bottom end of the A3?