Why is this happening?
27-Aug-2004, 01:40 AM
#1
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Join Date: Oct 2002
Posts: 1,614
Why is this happening?
Ok guys i just did a v-tec head swap on my ek dx, replaced it with a si top. Im having 3 small problems which are maybe normal.
1) From 0-4000 rpm's the response feels slower thanx with my dx top, i have to press harder on the gas to get moving, however after 4 it feels faster than before.
2) When i shift my rpm's fall much lower, also meaning i have to add more gas and release the clutch even slower.
3) When i come to a stop (red light for example) i pop it in to neutral and as im idling my rpm's are at 1,500...and my engine is still working?
thanx for your help everyone
1) From 0-4000 rpm's the response feels slower thanx with my dx top, i have to press harder on the gas to get moving, however after 4 it feels faster than before.
2) When i shift my rpm's fall much lower, also meaning i have to add more gas and release the clutch even slower.
3) When i come to a stop (red light for example) i pop it in to neutral and as im idling my rpm's are at 1,500...and my engine is still working?
thanx for your help everyone
27-Aug-2004, 08:43 AM
#3
^^^ OK... a little late with the ideas there idiot 
you don't tell that to a man who JUST completed a mini me.
So you have the VTEC ECU hooked up and working correctly? Have someone with an OBD2 scanner hook up a laptop and check to see that all your sensors are reading correctly.... watch the map sensor for signs of a vacuum leak.
Did everything plug right in? Some ppl claim the EX heads have a diff't type ot IACV wiring, like a 3 wire IACV vs a 2 wire one.
The powerband shift you describe sounds like a severly retarded cam timing, and that could be the cause for the RPM drop during shifts too. I'd definitely double check your timing belt installation to ensure the cam is installed stright up with the crank. Also check your ignition timing while you are at it...
you don't tell that to a man who JUST completed a mini me.
So you have the VTEC ECU hooked up and working correctly? Have someone with an OBD2 scanner hook up a laptop and check to see that all your sensors are reading correctly.... watch the map sensor for signs of a vacuum leak.
Did everything plug right in? Some ppl claim the EX heads have a diff't type ot IACV wiring, like a 3 wire IACV vs a 2 wire one.
The powerband shift you describe sounds like a severly retarded cam timing, and that could be the cause for the RPM drop during shifts too. I'd definitely double check your timing belt installation to ensure the cam is installed stright up with the crank. Also check your ignition timing while you are at it...
27-Aug-2004, 10:28 AM
#4
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Join Date: Oct 2002
Posts: 1,614
thanx bruno, im gonna let the guy that did my swap know what you said and he can take a quick look...
chigga1 i basically got all the parts for free so i said what the hell...i never wanted to do a swap anyways...getting a new car next summer...
chigga1 i basically got all the parts for free so i said what the hell...i never wanted to do a swap anyways...getting a new car next summer...
28-Aug-2004, 10:04 AM
#6
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Join Date: Nov 2003
Location: H-town YOOOO
Posts: 3,079
Originally posted by bbarbulo
^^^ OK... a little late with the ideas there idiot
you don't tell that to a man who JUST completed a mini me.
^^^ OK... a little late with the ideas there idiot
you don't tell that to a man who JUST completed a mini me.
I knew that but i didnt know he got it for freee,
but if didnt know if he got it for free i would of said LS swap woudl of saved the hassles, u can do it in a few hours by yourself....
p.s dont be calling me an idiot.
i understood the question, i gave him my answer, thats what i would of done...
Its like slapping a PR3 head on a B18 without putting new dowels in you get my drift....= problems!
30-Aug-2004, 08:35 AM
#7
Re: Why is this happening?
Originally posted by 1Solid_DX
Ok guys i just did a v-tec head swap on my ek dx, replaced it with a si top. Im having 3 small problems which are maybe normal.
1) From 0-4000 rpm's the response feels slower thanx with my dx top, i have to press harder on the gas to get moving, however after 4 it feels faster than before.
2) When i shift my rpm's fall much lower, also meaning i have to add more gas and release the clutch even slower.
3) When i come to a stop (red light for example) i pop it in to neutral and as im idling my rpm's are at 1,500...and my engine is still working?
thanx for your help everyone
Ok guys i just did a v-tec head swap on my ek dx, replaced it with a si top. Im having 3 small problems which are maybe normal.
1) From 0-4000 rpm's the response feels slower thanx with my dx top, i have to press harder on the gas to get moving, however after 4 it feels faster than before.
2) When i shift my rpm's fall much lower, also meaning i have to add more gas and release the clutch even slower.
3) When i come to a stop (red light for example) i pop it in to neutral and as im idling my rpm's are at 1,500...and my engine is still working?
thanx for your help everyone
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