OST-013: Massaging a virgin ;)
09-08-2011, 06:21 PM
Post: #31
 
Project D Wrote:port matching with the exhaust gasket, clean the mismatched seat and removed all the casting I presume Tongue

Look carefully... is it gasket matched? If it is, why is there not a perfect match??? Confused

Part of what is difficult to see (I tried) is deep in the port, just before the bowl, the port wall has been tapered. The taper is begun back in the bowl, and is brought forward into the port.

In the left view/bottom, if you look below the guide(roof of port), you see no shadow lines, now look at the right hand view same area. This is a key area because the flow is already in transition from vertical flow to horizontal flow when it "hits" the intruding port wall and is forced to merge with the gasses coming from the 2nd valve(out of view). By tapering the port to the bowl, the merge is far smoother, the actual merge point is larger, and occurs mostly AFTER the transition point from vertical to horizontal flow.

Dan -

You can |Sad .... OR you can ask for help!!!

OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991
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Messages In This Thread
[] - Bean - 08-18-2011, 07:35 AM
[] - banpei - 08-18-2011, 10:26 PM
[] - Bean - 08-18-2011, 11:27 PM
[] - oldeskewltoy - 08-20-2011, 02:55 AM
[] - oldeskewltoy - 08-20-2011, 07:16 PM
[] - oldeskewltoy - 08-21-2011, 12:01 AM
[] - oldeskewltoy - 08-23-2011, 01:37 AM
[] - Project D - 08-23-2011, 01:51 AM
[] - oldeskewltoy - 08-23-2011, 02:22 AM
[] - oldeskewltoy - 08-26-2011, 03:31 AM
[] - NoHachi - 08-26-2011, 10:22 AM
[] - Bean - 08-26-2011, 02:30 PM
[] - Project D - 08-26-2011, 03:44 PM
[] - oldeskewltoy - 08-30-2011, 06:57 PM
[] - Project D - 08-30-2011, 09:01 PM
[] - Bean - 08-30-2011, 09:07 PM
[] - oldeskewltoy - 08-31-2011, 02:18 AM
[] - Project D - 08-31-2011, 04:00 AM
[] - oldeskewltoy - 09-03-2011, 01:36 AM
[] - NoHachi - 09-03-2011, 11:52 AM
[] - oldeskewltoy - 09-03-2011, 07:43 PM
[] - NoHachi - 09-04-2011, 12:20 PM
[] - Bean - 09-04-2011, 02:01 PM
[] - oldeskewltoy - 09-04-2011, 06:44 PM
[] - oldeskewltoy - 09-04-2011, 06:48 PM
[] - Bean - 09-04-2011, 06:52 PM
[] - oldeskewltoy - 09-04-2011, 06:54 PM
[] - oldeskewltoy - 09-07-2011, 10:44 PM
[] - Project D - 09-08-2011, 03:46 AM
[] - oldeskewltoy - 09-08-2011 06:21 PM
[] - Project D - 09-09-2011, 06:46 AM
[] - oldeskewltoy - 09-09-2011, 06:44 PM
[] - oldeskewltoy - 09-09-2011, 06:58 PM
[] - oldeskewltoy - 09-09-2011, 07:11 PM
[] - Project D - 09-09-2011, 08:30 PM
[] - oldeskewltoy - 09-10-2011, 01:35 AM
[] - oldeskewltoy - 09-12-2011, 10:22 PM
[] - oldeskewltoy - 09-12-2011, 10:28 PM
[] - Project D - 09-13-2011, 04:10 AM
[] - oldeskewltoy - 09-13-2011, 06:10 PM

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