Is this right? Exhaust Rotor Housing Porting Pics
#28
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You need to use a straight edge, both pins installed and mark at the top of the bottom pin!!!!!! and for Christ's sake remove the sleeves also!!!!!!! If you do not do it right you will **** up the timming.
#30
My theory is that if your going to port an exhaust right you need to pull the sleeves and get serious about it. This half way stuff doesent work very well.
1fastT2, yours look realy good, you did and excellent job on those,very clean and faired together. Did you notice a big difference in performance from before when it was stock? Also did you use a template or just do it naturaly?
1fastT2, yours look realy good, you did and excellent job on those,very clean and faired together. Did you notice a big difference in performance from before when it was stock? Also did you use a template or just do it naturaly?
#31
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Originally posted by 1FastT2
Heres a pic of my exhaust port if it helps anyone.
Heres a pic of my exhaust port if it helps anyone.
It looks as if you didn't port the top at all? How does that run? Any differences and reasons why you didn't port the top? I noticed all the other pics on the thread the port is rounded and ported around the top.
#32
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Originally posted by Rotortuner
My theory is that if your going to port an exhaust right you need to pull the sleeves and get serious about it. This half way stuff doesent work very well.
1fastT2, yours look realy good, you did and excellent job on those,very clean and faired together. Did you notice a big difference in performance from before when it was stock? Also did you use a template or just do it naturaly?
My theory is that if your going to port an exhaust right you need to pull the sleeves and get serious about it. This half way stuff doesent work very well.
1fastT2, yours look realy good, you did and excellent job on those,very clean and faired together. Did you notice a big difference in performance from before when it was stock? Also did you use a template or just do it naturaly?
#33
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Originally posted by SoloIIdrift
1FastT2,
It looks as if you didn't port the top at all? How does that run? Any differences and reasons why you didn't port the top? I noticed all the other pics on the thread the port is rounded and ported around the top.
1FastT2,
It looks as if you didn't port the top at all? How does that run? Any differences and reasons why you didn't port the top? I noticed all the other pics on the thread the port is rounded and ported around the top.
#34
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1fastT2,
For your research, if you remember off-hand what sources and people you talked to? It seems like I talk to ten different people and get ten different anwsers.
Anyone else?
For your research, if you remember off-hand what sources and people you talked to? It seems like I talk to ten different people and get ten different anwsers.
Anyone else?
#35
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Originally posted by SoloIIdrift
1fastT2,
For your research, if you remember off-hand what sources and people you talked to? It seems like I talk to ten different people and get ten different anwsers.
Anyone else?
1fastT2,
For your research, if you remember off-hand what sources and people you talked to? It seems like I talk to ten different people and get ten different anwsers.
Anyone else?
#36
Ya i completely aggree with you. Every one has there own style and there is no one right way to do it. And ya that doesn not hold true at all to NA aplications in reguards to only porting the bottom. Whenever you see a port that only goes down or just a little up and mostly down its always going to be for a turbo in order to avoid intake and exhaust overlap. Not that there can be overlap and still run but its not preferred by most.
CJG
CJG
#37
20B N/A Wide Body FC3S
what kind of boost your running also has alot to do with what port you use.. bringing the port up increases overlap and you loose a little low end but gain top end... going out on the sides seems to make a pretty good diffrence though.. you don't srew with port timming, but there is way more surface area for the exaust to escape... I'd be the equivilent of running slightly better than stock cams with much larger valves on a piston engine...
#38
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Great comments guys, lots of great info in this thread. Just for clairifcation, This is a N/A 6 port 1990 motor, using turboII rotor housings. Thanks again for all the great comments. Anyone else, please feel free to add more!
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