RX8 housings
#2
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no you cant the exhuat and the intake are on the irons on the rensis motor...so I imagine that were the exhuat port would be you would just have the waterjacket
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I am hoping that it isent becose it my bee the same housing that normal 13b housing. But i am traying to find it out so maby somone in here know anyting and want to sher it whid me ? U can PM me if u know anyting abote this please.
Thanx Alex
Thanx Alex
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Technically, you could make PP housing out of RX-8 housings, but it would require twice the work as doing it with older 13B housings, which already have a peripheral exhaust port. Just go for the older 13B housings, or buy manufacturer PP housings.
#6
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Nice idea White87. I am also curiuos. The way I see it, the P-port exuast has to be better (when talking flow). I would like to know if the side ports of the 8 motor continue to dump till the rotor reaches TDC. I KNOW a p-port does. Even staying open past TDC for good overlap. I, personally, don't think the side exuast ports can keep up with the P-port.
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Originally Posted by MrDirt
Technically, you could make PP housing out of RX-8 housings, but it would require twice the work as doing it with older 13B housings, which already have a peripheral exhaust port. Just go for the older 13B housings, or buy manufacturer PP housings.
Alex
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Originally Posted by Wankelboble
Yes but whats the funn in that to cut 2x ports in to its dont take long time.
Alex
Alex
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Originally Posted by t-von
Don't forget the Rx8 housings have the coolant seal passages unlike the 2nd and 3rd gens.
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this is kind of a crappy pic, but it was the only one i could find.
you see the rotor housings? it almost looks like they WANT you to cut a pp in there!!
you see the rotor housings? it almost looks like they WANT you to cut a pp in there!!
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Thanx T-von. Can u take a pic when the housing is leangin down so i see the waterjacket?
Looks like its oki to cut a exhouse port in it And thats its good.
BTW Tvon I am not using normal side plates. I am using aluminium side plates from racing beat. I am not sure if i can get them whid no seals cut in them but i dont understand way i cant get that in it and us rx8 rotor housing. So i can cut the exhous like what i want.
Alex
Looks like its oki to cut a exhouse port in it And thats its good.
BTW Tvon I am not using normal side plates. I am using aluminium side plates from racing beat. I am not sure if i can get them whid no seals cut in them but i dont understand way i cant get that in it and us rx8 rotor housing. So i can cut the exhous like what i want.
Alex
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Originally Posted by MrDirt
The fun in it is actually having an engine that works. Go ahead any try to create functional PP housings on your own and not have it be time consuming. You do not know what you are talking about.
My wurst thing is that i dont know how type all the words in english Becose i am living in Norway. I am traying my best to get my self understand but its not always that easy on when it comes to technical terms.
#17
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Originally Posted by Wankelboble
BTW Tvon I am not using normal side plates. I am using aluminium side plates from racing beat. I am not sure if i can get them whid no seals cut in them but i dont understand way i cant get that in it and us rx8 rotor housing. So i can cut the exhous like what i want.
Alex
Alex
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Originally Posted by Wankelboble
How do u know me ????? what i know ore dont. Stop beeing a idiot becose somone is asking a cuestion. Isent this forum to help and not geting trowed **** in the face???
My wurst thing is that i dont know how type all the words in english Becose i am living in Norway. I am traying my best to get my self understand but its not always that easy on when it comes to technical terms.
My wurst thing is that i dont know how type all the words in english Becose i am living in Norway. I am traying my best to get my self understand but its not always that easy on when it comes to technical terms.
I DO know what you know and do not know regarding this subject, because if you already knew the extent of work in cutting functional peripheral ports in motors, then you wouldnt be asking about this topic. While the RX-8 housings look like they would be very easily cut for peripheral exhaust ports, I just really do not see the point when you can get housings out of any other 13B that already have a peripheral exhaust port.
The real judge of the work required is the intake port, because you will have to do it no matter what housings you go with (unless you buy manufacturer PP housings). Since the RX-8 appears to have water crossing over into the lower intake manifold (just like turbo housings), you could start with Turbo housings and have half of the work done for you already. That might not be as "fun", but your engine will be completed with a lot less time, money, and effort. Unless you are trying to do a semi-pp intake AND exhaust motor, which would have incredibly complex manifolds, I see no good reason not to stick with housings already made with a peripheral exhaust. My intention is not to insult your intelligence, I am only trying to help you out. If you want something to tinker around with, get the RX-8 housings. Rationality would tell me to buy turbo housings and save myself some grief.
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Originally Posted by Wankelboble
Thanx T-von. Can u take a pic when the housing is leangin down so i see the waterjacket?
Looks like its oki to cut a exhouse port in it And thats its good.
BTW Tvon I am not using normal side plates. I am using aluminium side plates from racing beat. I am not sure if i can get them whid no seals cut in them but i dont understand way i cant get that in it and us rx8 rotor housing. So i can cut the exhous like what i want.
Alex
Looks like its oki to cut a exhouse port in it And thats its good.
BTW Tvon I am not using normal side plates. I am using aluminium side plates from racing beat. I am not sure if i can get them whid no seals cut in them but i dont understand way i cant get that in it and us rx8 rotor housing. So i can cut the exhous like what i want.
Alex
other than the oil injector locations (which wouldn't matter if you were premixing), what would be the benefit of using the rx8 housings? i thought the racing beat aluminum housings had the coolant seal grooves in them? am i wrong on this?
#20
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Originally Posted by GUITARJUNKIE28
other than the oil injector locations (which wouldn't matter if you were premixing), what would be the benefit of using the rx8 housings? i thought the racing beat aluminum housings had the coolant seal grooves in them? am i wrong on this?
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Originally Posted by 13btnos
Racing Beat aluminum housings you can get them either way. But I think the point everyone is missing is that he wants to make the periferal exhaust so that he can make it to the specs he wants. Which to me would make sense since the stock exhaust ports are inefficient. If you have seen MFR PP housings you will notice that the exhaust is different than the stockers.
-cutting the ports perfectly through the entire housing
-perfectly fitting a tube that will connect to your exhaust
-perfectly sealing that tube so you will have no coolant or exhaust leaks
-designing a custom manifold to connect to the tubes
Instead of only:
-Using a die grinder to change your existing port shape
Is that really worth it over porting the crap out of existing ports, and being able to use an aftermaket header? As stated before, any rational person would say "no".
#22
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As long as he knows how to determine port timing on the housing and knows what timing he wants to run, I don't see the big deal with him making his own ports. Machining them in isn't rocket science and what happens through the water jacket would happen with a 13B housing too. I don't see the problem. If a stock 13B housing can be modified to give him what he wants then I would be more inclined to use them. I wouldn't pay for a stock mfr p-port housing though. What if he wants different port timing than the existing ones can give him such as a port that doesn't close as late as stock? He'd have to make that. Whether or not this is practical isn't really anyone's concern but his. That's usually a big problem on this forum. When someone wants to do something that could possibly be done cheaper and easier, they assume everyone should also follow this course and do it the same way or they'll get flamed for it. That's closed minded. The most important thing is to get it done how you want it done. Having others agree with your decision is irrelevant.
Cutting a peripheral port into a housing is no big deal for a machine shop. Having a sleeve turned out of aluminum and threaded into the housing is also not that difficult to get done. Even welding aluminum can be done as long as the welder knows what he is doing. Basically as long as you know what you want done and where you want it, it isn't that hard to get someone else with the resources to do it. You just have to pay for it. I'd give this guy more credit and don't claim you know what he does. That's doubtful. People don't know what I know or how I think things should be done. Is this practical? Probably not. Can it be done? Absolutely. I hope he tries it. I have more respect for the person that takes a risk and tries something different than I do for the person who just does everything the traditional easy way. It's these few who usually make all the advancements. Progress and advancements aren't always rational.
Cutting a peripheral port into a housing is no big deal for a machine shop. Having a sleeve turned out of aluminum and threaded into the housing is also not that difficult to get done. Even welding aluminum can be done as long as the welder knows what he is doing. Basically as long as you know what you want done and where you want it, it isn't that hard to get someone else with the resources to do it. You just have to pay for it. I'd give this guy more credit and don't claim you know what he does. That's doubtful. People don't know what I know or how I think things should be done. Is this practical? Probably not. Can it be done? Absolutely. I hope he tries it. I have more respect for the person that takes a risk and tries something different than I do for the person who just does everything the traditional easy way. It's these few who usually make all the advancements. Progress and advancements aren't always rational.
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Originally Posted by rotarygod
As long as he knows how to determine port timing on the housing and knows what timing he wants to run, I don't see the big deal with him making his own ports. Machining them in isn't rocket science and what happens through the water jacket would happen with a 13B housing too. I don't see the problem. If a stock 13B housing can be modified to give him what he wants then I would be more inclined to use them. I wouldn't pay for a stock mfr p-port housing though. What if he wants different port timing than the existing ones can give him such as a port that doesn't close as late as stock? He'd have to make that. Whether or not this is practical isn't really anyone's concern but his. That's usually a big problem on this forum. When someone wants to do something that could possibly be done cheaper and easier, they assume everyone should also follow this course and do it the same way or they'll get flamed for it. That's closed minded. The most important thing is to get it done how you want it done. Having others agree with your decision is irrelevant.
Cutting a peripheral port into a housing is no big deal for a machine shop. Having a sleeve turned out of aluminum and threaded into the housing is also not that difficult to get done. Even welding aluminum can be done as long as the welder knows what he is doing. Basically as long as you know what you want done and where you want it, it isn't that hard to get someone else with the resources to do it. You just have to pay for it. I'd give this guy more credit and don't claim you know what he does. That's doubtful. People don't know what I know or how I think things should be done. Is this practical? Probably not. Can it be done? Absolutely. I hope he tries it. I have more respect for the person that takes a risk and tries something different than I do for the person who just does everything the traditional easy way. It's these few who usually make all the advancements. Progress and advancements aren't always rational.
Cutting a peripheral port into a housing is no big deal for a machine shop. Having a sleeve turned out of aluminum and threaded into the housing is also not that difficult to get done. Even welding aluminum can be done as long as the welder knows what he is doing. Basically as long as you know what you want done and where you want it, it isn't that hard to get someone else with the resources to do it. You just have to pay for it. I'd give this guy more credit and don't claim you know what he does. That's doubtful. People don't know what I know or how I think things should be done. Is this practical? Probably not. Can it be done? Absolutely. I hope he tries it. I have more respect for the person that takes a risk and tries something different than I do for the person who just does everything the traditional easy way. It's these few who usually make all the advancements. Progress and advancements aren't always rational.
As far as me not knowing what he does or does not know... if he knew all about peripheral porting, this thread would not have been posted. Instead he would have immediately called or visited a machine shop.
My final thoughts: If you really MUST have renesis housings, then go for it. Just know that it will end up costing you a lot more in the end, which is no big deal if you have cash to burn, I guess. I apologize for being the stereotypical frugal FC owner.
Last edited by MrDirt; 10-27-05 at 04:52 PM.
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I just wanted to clarify one thing, since you mentioned the aluminum side housings. You never mentioned anything about a semi-pp, and if you were planning on doing that, I would be all for your idea. What I have gathered from these posts is that... you want to take a renesis motor which has all side ports and no peripheral ports, get rid of all of the side ports that are there, and add the peripheral ports that arent there... Is this what you want to do?
#25
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Originally Posted by MrDirt
Ever heard of porting? I'm not saying he should use the stock port shape, things are just a lot easier when you dont have to bother with the following things:
-cutting the ports perfectly through the entire housing
-perfectly fitting a tube that will connect to your exhaust
-perfectly sealing that tube so you will have no coolant or exhaust leaks
-designing a custom manifold to connect to the tubes
Instead of only:
-Using a die grinder to change your existing port shape
Is that really worth it over porting the crap out of existing ports, and being able to use an aftermaket header? As stated before, any rational person would say "no".
-cutting the ports perfectly through the entire housing
-perfectly fitting a tube that will connect to your exhaust
-perfectly sealing that tube so you will have no coolant or exhaust leaks
-designing a custom manifold to connect to the tubes
Instead of only:
-Using a die grinder to change your existing port shape
Is that really worth it over porting the crap out of existing ports, and being able to use an aftermaket header? As stated before, any rational person would say "no".