more pictures on engine porting
more pictures on engine porting
inteligent extratarestril
Joined: Mar 2001
Posts: 1,313
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From: The Sunny B.O.P, New Zealand
who ported that, u or a "pro" shop?
they have overlapped the ports into the area the oil seal needs, be prepared to suffer oil leakage, then thru your plates away and get some more and get them ported by someone who DOES know what they are doing.
they have overlapped the ports into the area the oil seal needs, be prepared to suffer oil leakage, then thru your plates away and get some more and get them ported by someone who DOES know what they are doing.
Rotary Enthusiast
Joined: Feb 2001
Posts: 1,375
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From: The First State
Originally posted by HWO
who ported that, u or a "pro" shop?
they have overlapped the ports into the area the oil seal needs, be prepared to suffer oil leakage, then thru your plates away and get some more and get them ported by someone who DOES know what they are doing.
who ported that, u or a "pro" shop?
they have overlapped the ports into the area the oil seal needs, be prepared to suffer oil leakage, then thru your plates away and get some more and get them ported by someone who DOES know what they are doing.
Last edited by Greg; Oct 27, 2001 at 12:14 AM.
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'Tuna'
Joined: Feb 2001
Posts: 4,637
Likes: 3
From: Miami,Fl,USA
Originally posted by vosko
yeah Ito knows what he is doing. pepe loco's car only dyno'd 685rwhp yesterday. porting isn't done yet, it should be done next week and the engine assembled too
yeah Ito knows what he is doing. pepe loco's car only dyno'd 685rwhp yesterday. porting isn't done yet, it should be done next week and the engine assembled too
crispeed
87TII
9.20@150mph 1/4
5.91@118mph 1/8
1.32 60ft
651RWHP/522RWTQ
T-72
2600lbs
Thread Starter
Joined: Feb 2001
Posts: 7,848
Likes: 0
From: NJ
Originally posted by crispeed
Carlos(Pepe Loco) is lucky that he's retiring the Datsun!
I also heard that Ito and Carlos part ways too!
crispeed
Carlos(Pepe Loco) is lucky that he's retiring the Datsun!
I also heard that Ito and Carlos part ways too!
crispeed
Banned. I got OWNED!!!
Joined: Mar 2001
Posts: 2,306
Likes: 1
From: lebanon
For the very marginal gain in port opening area (less than 5%)That porting is VERY bad practice!
It will result in excessive outer oil control ring wear due to excessive exposure to raw air fuel mixture, It will not provide any gain in flow due to port timming improvement as for a large majority of the time the extra area ported is covered by the rotor side...
It is a very stupid example of engine porting, I highly recommend not going into the oil control ring area. The performance gains are questionable at best (port does not open any earlier and does not close any later) and it will deteriorate oil control ring performance + make the engine more prone to blow by.
There are no good reasons I can see for doing this ?
It will result in excessive outer oil control ring wear due to excessive exposure to raw air fuel mixture, It will not provide any gain in flow due to port timming improvement as for a large majority of the time the extra area ported is covered by the rotor side...
It is a very stupid example of engine porting, I highly recommend not going into the oil control ring area. The performance gains are questionable at best (port does not open any earlier and does not close any later) and it will deteriorate oil control ring performance + make the engine more prone to blow by.
There are no good reasons I can see for doing this ?
Thread Starter
Joined: Feb 2001
Posts: 7,848
Likes: 0
From: NJ
Originally posted by RICE RACING
For the very marginal gain in port opening area (less than 5%)That porting is VERY bad practice!
It will result in excessive outer oil control ring wear due to excessive exposure to raw air fuel mixture, It will not provide any gain in flow due to port timming improvement as for a large majority of the time the extra area ported is covered by the rotor side...
It is a very stupid example of engine porting, I highly recommend not going into the oil control ring area. The performance gains are questionable at best (port does not open any earlier and does not close any later) and it will deteriorate oil control ring performance + make the engine more prone to blow by.
There are no good reasons I can see for doing this ?
For the very marginal gain in port opening area (less than 5%)That porting is VERY bad practice!
It will result in excessive outer oil control ring wear due to excessive exposure to raw air fuel mixture, It will not provide any gain in flow due to port timming improvement as for a large majority of the time the extra area ported is covered by the rotor side...
It is a very stupid example of engine porting, I highly recommend not going into the oil control ring area. The performance gains are questionable at best (port does not open any earlier and does not close any later) and it will deteriorate oil control ring performance + make the engine more prone to blow by.
There are no good reasons I can see for doing this ?
Thread Starter
Joined: Feb 2001
Posts: 7,848
Likes: 0
From: NJ
this is a pic of the unported housing. is it possible you guys are looking at it wrong ??????? that ring isn't the oil line ring!!!!!
Last edited by vosko; Oct 28, 2001 at 08:48 PM.
Lucky you added that bit, I thought it was going to be on for a second there.