top speed with stock motor
01-31-2005, 12:03 PM
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top speed with stock motor
My cousin have a 89 Civic Si with the stock 108 hp motor. The question he asked me was does the Si motor suppose to top out at 100 mph 
. I'm not sure, never drove mine that fast when I had the sohc motor. Thanks if anyone can help my cousin out. Gingas
. I'm not sure, never drove mine that fast when I had the sohc motor. Thanks if anyone can help my cousin out. Gingas
02-11-2005, 04:02 PM
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I have an 88 crx si which I think is the same motor as the civic, and a couple of days ago I hit 110, I've been in another crx where the needle hit 120 and the car still kept going. .......and the car is completely stock.
02-12-2005, 07:31 AM
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Thanks I'll let cuzz know, but that's wild because I have a B16A1 in my 91 Civic Si , although somehow the guys who did my swap,somehow recieved a automatic ecu instead of a manual B16 ecu. Mine only top out at 110 & I have more hp than a sohc si motor 108 hp. I'm getting mine chipped soon so It'll top out much more. I really don't like to drive that fast on the street anything can happen, besides I'm married so I want to get old with my wife. I just deal with the track. Becareful out their at those speeds. Especially cops, insurance & your life. Enjoy the power, be safe!! hollar at your boy, Gingas
02-13-2005, 01:37 PM
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gearing plays more of a role in the top speed then power to a certain extent.
A stock civic has enough power to push to 130mph, but if your running 20" tall tire you may run out of rpm before you get there.
A stock civic has enough power to push to 130mph, but if your running 20" tall tire you may run out of rpm before you get there.
02-16-2005, 06:53 AM
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Well I do have 205-55-15's instead of 205-50-15's. But I should still be able to get pass 110. I think the auto B16A auto ecu has a big part to do with it, but than again alot of people with JDM B16's in the 88-91 civic's, crx says they only top out at 115. Gingas
02-16-2005, 08:06 AM
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Originally Posted by gingas
Well I do have 205-55-15's instead of 205-50-15's. But I should still be able to get pass 110. I think the auto B16A auto ecu has a big part to do with it, but than again alot of people with JDM B16's in the 88-91 civic's, crx says they only top out at 115. Gingas
02-21-2005, 12:54 AM
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Originally Posted by TeHJuSTiN
If I'm not mistaken, the JDM ECU's have a governor built in.
thats y when you watch BMI you always see the tach dip all the way right
