Lx to Si?
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From: canada
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Lx to Si?
Is it possible to change the head on a 2003 lx civic to si head? I seen other non-vtec motors doing head swaps to get vtec 
For example my friends has ls vtec on his intregra and its very fast!
For example my friends has ls vtec on his intregra and its very fast!
I wish I was asian
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From: chantilly, Virginia, US
Rep Power: 336 2003 lx
engine- D1A3
2003 si
engine- K20A3
So no. you can't just swap the head, 2 different series engines. The Integra LS used a B-Series block and a non-VTEC B-Series head. You can swap a D17A2 head onto your D17A3 block, but on a SOHC motor, it's not worth the effort.
engine- D1A3
2003 si
engine- K20A3
So no. you can't just swap the head, 2 different series engines. The Integra LS used a B-Series block and a non-VTEC B-Series head. You can swap a D17A2 head onto your D17A3 block, but on a SOHC motor, it's not worth the effort.
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From: Daytona Beach, Florida, US
Rep Power: 349 if you all would take notice that he is from canada.. hench the si to him is our ex... ex/usa si/can. si/usa sir/can.
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Rep Power: 0 both civics are using the same block so if you want VTEC
you'll need the vtec head, controller & ecu
I'm not shure what else you need
my research is on putting in a k24 (accord) block
with a k20 (rsx type s) head
you'll need the vtec head, controller & ecu
I'm not shure what else you need
my research is on putting in a k24 (accord) block
with a k20 (rsx type s) head
Originally Posted by jdm_bb
Will i need to get the sub frame? and also the gearing is that a problem?
and will this be easier than doing the type s or type r swap?
and will this be easier than doing the type s or type r swap?
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maybe not
You might not get all the way to 127hp because the exhaust manifold on the EX/ Can Si is different from the LX manifold. Am I correct here? Are there any other differences in the cars that anyone is aware of that would detract from the 127hp figure?
Is the conversion really this simple? A head and an ECU? You could probably get something for the old head and ECU so it may be be that expensive.
Is the conversion really this simple? A head and an ECU? You could probably get something for the old head and ECU so it may be be that expensive.
