 Break in Compression 2 Liter, Valve Adjust/Duration/Lift...etc |
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| newdeal2 |
 Dec 20 2004, 05:13 PM
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#1
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Unregistered  |
OK, here's the scoop. I have the car running [the infamous 2 liter D jet re build] reasonably well. I re did the compression test [all plugs out/Throttle open]and it ranges from 120 -140.
I have been told that the WebCam [by Raby] having a longer duration and better lift will throw numbers off since it is intended to improve the mid range. I have also noted from various sources that it could be a simple valve adjustment that will bring the numbers closer. Am I getting too anal here? (IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif) |
 
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| newdeal2 |
Dec 20 2004, 09:08 PM
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#2
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Unregistered |
Makes sense. I need to relax and drive, get the timing right, etc.
I didn't do any caculations since all I changed was the piston type [stock to euro] and purchused them with the cylinders as a set. I checked the deck height and moved on. The car is running a little choppy at 3-4000 rpm. No excessive noise so I think it's a tuning issue. Should I hold off on valve adjustment or do it now since I didn't do it after the run in? |
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Posts in this topic
newdeal2 Break in Compression 2 Liter Dec 20 2004, 05:13 PM
Jake Raby Did you have the throttle open when taking the num... Dec 20 2004, 05:39 PM newdeal2 Yes, throttle open and it is your WebCam 73 grind Dec 20 2004, 06:49 PM Jake Raby Have the rings had time to seat yet??
If not tha... Dec 20 2004, 07:17 PM newdeal2 I ran in the motor for 20 min's @ 2000 rpm. an... Dec 20 2004, 08:05 PM Jake Raby The calculated compression ratio...
Sounds liek t... Dec 20 2004, 08:32 PM Jake Raby Oh no........
The first step to engine building i... Dec 20 2004, 09:41 PM
newdeal2 Everything was kept stock, only changes as noted [... Dec 21 2004, 06:29 AM |
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