Si Swap, has anyone done it?
Thread Starter
#1 S2000 Fan
iTrader: (2)
Joined: Oct 2002
Posts: 1,992
Likes: 0
From: The home of a million legends
Rep Power: 0 
Si Swap, has anyone done it? Well I know people have swapped the K20A and the K20A2 in our civics, but has anyone put the A3 (USDM SI motor) in yet.
Just wondering, I know people would prefer the other two over the Si motor but has this happened yet?
I mean there are reasons why people would choose the Si motor over the two, like lower compression for boosting.
Just wondering, I know people would prefer the other two over the Si motor but has this happened yet?
I mean there are reasons why people would choose the Si motor over the two, like lower compression for boosting.
Thread Starter
#1 S2000 Fan
iTrader: (2)
Joined: Oct 2002
Posts: 1,992
Likes: 0
From: The home of a million legends
Rep Power: 0 Originally posted by civicvtec1ps
cheaper price than k20a2.
Cybernation stage 1 turbo 262whp 208tq at 7 psi. great number
cheaper price than k20a2.
Cybernation stage 1 turbo 262whp 208tq at 7 psi. great number
Think about what it would take to get out little D-series to put out over 250whp.....
That is why I am a fan of the cheaper Si swap, Tuning Potential!
Thread Starter
#1 S2000 Fan
iTrader: (2)
Joined: Oct 2002
Posts: 1,992
Likes: 0
From: The home of a million legends
Rep Power: 0 Originally posted by orso
well because it is the slowest.
well because it is the slowest.
Not everyone puts a GS-R or a Type-R engine when they do a swap.
Is it slower than those two yes, is it faster than our D-series..........YES
Registered!!
iTrader: (8)
Joined: Mar 2003
Posts: 3,024
Likes: 1
From: Zulu Alpha Tango Foxtrot
Rep Power: 311 I would think that MOST of the work would be the same as the K20A2 swap since its technically the same motor. IE you'll need mounts, subframe, etc. Yeah, it will be a lot cheaper than a K20A2, but would require more money to build it up too - its sort of an interim solution between building up our horseless D17 and a K20A2...Might be a good alternative!
I prefer not to look at displacement, rather look at cost effectiveness. How much is a k20a3 swap going to cost you? At least 5k and a turbo, add another 2-3. Drop 8k into a d17 and you'll be running 11-12's. A k20 with a stage 1 turbo is nowhere near that. You do the math.
Originally posted by andyman97
I prefer not to look at displacement, rather look at cost effectiveness. How much is a k20a3 swap going to cost you? At least 5k and a turbo, add another 2-3. Drop 8k into a d17 and you'll be running 11-12's. A k20 with a stage 1 turbo is nowhere near that. You do the math.
I prefer not to look at displacement, rather look at cost effectiveness. How much is a k20a3 swap going to cost you? At least 5k and a turbo, add another 2-3. Drop 8k into a d17 and you'll be running 11-12's. A k20 with a stage 1 turbo is nowhere near that. You do the math.
3k and your running 13s.. good deal to me.
Originally posted by Jaykuai
i dont know the math.. but the numbers of the SF turbo have returned the loyalty to my D17
3k and your running 13s.. good deal to me.
i dont know the math.. but the numbers of the SF turbo have returned the loyalty to my D17
3k and your running 13s.. good deal to me.
yea i agree turbo is the way to go... with some internal work u can get way past the 250hp mark.... with 8psi ur runin about 200hp if not alil more... with alcohol injection and no internal work at 11psi it should be over 250hp
Registered!!
Joined: May 2003
Posts: 2,464
Likes: 0
From: Luling, Louisiana
Rep Power: 0 The SI motor does not have vtec in the exhaust cam. So it only has 1/2 vtec in the engine. The K20a2 and K20a both have true full vtec power. Of course the SI motor does have a cheaper price tag than its competors. Would the motor mounts for the K20a2 fit the K20a3 correctly? Im guessing it would concerding that there are the same engine group. For 6G's you can have your car running 13's in the 1/4 with type-s swap. And that is NA tuned. I think the K20a2 would hold more boost better than the d17, but I guess that is just my opinion.
Yes, the k20a2 will swap directly with an a3. As far as boost goes, the a2 has higher compression than the a3. Lower compression means more boost, safer (less detonation.) Of course, you can always replace an a2's pistons with lower compression forged ones but you could also put a full vtec a2 head on an a3 block.
The choice is yours but why spend the extra money for a swap when you can build a d17 for boost to run 11's for less than the same price of a swap and base turbo setup?
The choice is yours but why spend the extra money for a swap when you can build a d17 for boost to run 11's for less than the same price of a swap and base turbo setup?
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
bolt-on-bandito
Electrical
32
Jan 15, 2020 03:25 PM
Scout1
Mechanical Problems/Vehicle Issues and Fix-it Forum
12
Oct 5, 2015 01:33 PM
juicetayne
Mechanical Problems/Vehicle Issues and Fix-it Forum
2
Sep 30, 2015 11:02 AM
ThatGuy913
Mechanical Problems/Vehicle Issues and Fix-it Forum
6
Sep 28, 2015 05:35 PM
