I've been thinking about all sorts of swaps but its so damn expensive! So would it be pointless to build the a3 engine? With N/A specs could I see at least or little over 200hp? By doing minor head work an all out bolt-ons could it be done? If I slapped my a3 head onto a k24a1 or k24a3 block would I still need kpro? Help me out dudes.

 

extremely pointless to me... but lots of people enjoy building engines others frown upon... like SOHC builds

Don't slap a A3 head on a k24 block..... throw a a2 z1 or z3 head on it
Or if you want just buy a full a2,z1 or k24a2 and just drop that in you'll be much happier. Get k-pro and go from there....

 

Well sum sohc builds are damn impressive wen they go turbo. Yeah I'm certain my a3 is pointless now. I still gotta pay off my car so I'm gonna stay stock until that's done. Thanks for the input.

 

I got my K24A1 for $500 from a local yard. IMO that makes anything you do to an A3 pointless.

Granted thats from the view of hp/$$. I'm sure if you built a bad *** NA A3, or a high HP, turbo, A3 people would be impressed. It would just cost you a lot of money, and by spending an extra $500 on a K24A1 you would have increased your hp by 25% at the very least.

 

yes, pretty much

 

Cant u throw A2 cams in it.. I saw an A3 w/some aftermarket A2 cams makin 200whp, stock block

 

nope you can't!!!

 

I have seen built n/a a3's run low 14s and I'm sure there has to be some out there breaking 13s... It's hard and that can be done with a bolt on type s. If you want to stick to a3 go turbo or just save up for a k24 or type s motor.

 

 

Actually, yes you can swap a2 cams. But the car will be in permanent Vtec mode, as the cam lobes must be pinned together.

 

Wouldn't it be better to buy some skunk2 stage 1 cams instead? I too am looking to buy a ep3 soon and I'm trying to find out as much as possible as to what I can do to it.

 

It's pointless to do any modifications to an A3 head, they just don't flow enough volume compared to an A2 head. It's just like B-series engines. Build the Vtec heads, not the opposite.

 

this should be part of a sticky, with all the info of all the k series heads and blocks and what works with what

 

No need to sticky something that has been covered a million times and its in the FAQs!

 

i couldnt find it. thats why l clicked on this thread

 

So would it be best to swap the a3 head with a a2 head? Is that even possible?

 

get a a2 head with a k24 bottom and you will be set

 

Yes it's possible to swap an A2 head on an A3 block, but still pointless because the rod/stroke ratio isn't optimized for the Vtec head. It's not quite the frankenstein motor that you'd get with a B-series. The A3 short block sucks compared to the A2.

A2 short block has: knock sensors, oil cooler, aluminum oil pan + better bracing, etc.

It makes much more sense both financially and for power to just swap the entire motor.

 

He speaks the truth!

 

Well that clarifies many questions. Thanx. Guess ill keep it stock with bolt ons and maybe supercharge it or swap it out for a a2.

 

Good info! I want some K.