CYM goin to PFSupercars for new ported motor and A-Spec GT42Rinstall!
07-31-05, 08:13 PM
#27
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Originally Posted by armanielite
yeah i have a street port...but what 4in exhaust are you using....just a custom one?
07-31-05, 08:15 PM
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Originally Posted by ErnieT
Full boost on Stock ports by 4600rpms. Ported motor should be sooner. Also Im running a full 4" exhaust. If your running a 3" exhaust that would create more back pressure spooling faster also.
i always thought that more back pressure would hurt spool time?
btw..how soon do you want to sell the kit..if you still are of course?
07-31-05, 08:59 PM
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Originally Posted by armanielite
i always thought that more back pressure would hurt spool time?
btw..how soon do you want to sell the kit..if you still are of course?
btw..how soon do you want to sell the kit..if you still are of course?
07-31-05, 09:35 PM
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Originally Posted by armanielite
so are you still wanting to sell the kit? if so how soon?
My Paypal account is under ETaylor327@comcast.net
I'd rather have a money order since paypal takes a cut since Im pratically giving it away.
Last edited by ErnieT; 07-31-05 at 09:39 PM.
08-01-05, 10:40 PM
#36
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Originally Posted by ErnieT
Sup guys. Im tired of playin around. This year at Imports vs. Domestic's the Supra's are gonna learn the hard way what a RX7 can do! Ray's gonna port me a motor and clearance it for high boost (30+psi) and install my GT42R kit from A-spec. With Ray tuning and porting me an engine, Im thinking 9's
BTW...Big thumbs up to A-Spec for hookin me up on the GT42R kit. Manifold and exhaust side will be ceramic coated and compressor polished.
BTW...Big thumbs up to A-Spec for hookin me up on the GT42R kit. Manifold and exhaust side will be ceramic coated and compressor polished.
08-01-05, 10:41 PM
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Originally Posted by ErnieT
Alex,
I agree and thats why I sold the aftermarket one. No sense. As far as the custom one Im having made, there isn't anyone else out there, IMO, that will do a better job than Ross Machine. They flowbench test everything and their track record speaks for themselves. http://www.rossmachineracing.com/bullish.html
I agree and thats why I sold the aftermarket one. No sense. As far as the custom one Im having made, there isn't anyone else out there, IMO, that will do a better job than Ross Machine. They flowbench test everything and their track record speaks for themselves. http://www.rossmachineracing.com/bullish.html
http://www.rossmachine.com/products.html
Here's some work we do regularly...
(the T6 & 20B flange are my work, not the piping.)
You can see here... http://www.rossmachineracing.com/large/mr2intake3.html that their manifolds show the welds. My intake manifolds don't show any welds on the runners, and are machined from solid billet.
My intake manifold should be done in ~ a week or so, i'll post up some pictures of it then. Richs' (Auto Illusion) should be done no later than the end of the month.-Alex
Last edited by TT_Rex_7; 08-01-05 at 10:45 PM.
08-01-05, 11:10 PM
#38
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Originally Posted by TT_Rex_7
They do some nice work, but not anything nicer than the avg. machine shop. However, they do have some nice track records/track backround.
(the T6 & 20B flange are my work, not the piping.)
You can see here... http://www.rossmachineracing.com/large/mr2intake3.html that their manifolds show the welds. My intake manifolds don't show any welds on the runners, and are machined from solid billet. My intake manifold should be done in ~ a week or so, i'll post up some pictures of it then. Richs' (Auto Illusion) should be done no later than the end of the month.
-Alex
(the T6 & 20B flange are my work, not the piping.)
You can see here... http://www.rossmachineracing.com/large/mr2intake3.html that their manifolds show the welds. My intake manifolds don't show any welds on the runners, and are machined from solid billet.
My intake manifold should be done in ~ a week or so, i'll post up some pictures of it then. Richs' (Auto Illusion) should be done no later than the end of the month.-Alex
Last edited by ErnieT; 08-02-05 at 06:17 AM.
08-01-05, 11:14 PM
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Originally Posted by 88fc3sw/HX83
AWESOME WORK Alex! Just currious, how much for the 20b manifold?
-Alex
08-02-05, 06:12 AM
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Originally Posted by TT_Rex_7
They do some nice work, but not anything nicer than the avg. machine shop. However, they do have some nice track records/track backround.
You can see here... http://www.rossmachineracing.com/large/mr2intake3.html that their manifolds show the welds. My intake manifolds don't show any welds on the runners, and are machined from solid billet. My intake manifold should be done in ~ a week or so, i'll post up some pictures of it then. Richs' (Auto Illusion) should be done no later than the end of the month.
-Alex
You can see here... http://www.rossmachineracing.com/large/mr2intake3.html that their manifolds show the welds. My intake manifolds don't show any welds on the runners, and are machined from solid billet.
My intake manifold should be done in ~ a week or so, i'll post up some pictures of it then. Richs' (Auto Illusion) should be done no later than the end of the month.-Alex
Alex,
Im happy for you. Not seeing the welds is not a priority for me as it is making big horsepower. Ross Machine has a 6second pro car(record)Bullish, 7.00 second outlaw car(MSP), and 8.00 second street car(MSP) under its belt for accomplishments. Im not really concerned with Mickey Mouse.
, I just want big power which is what they do with proof backed results on the track as well as flowbenched. In anycase Im not here promoting their shop, I was just happy about getting a ported motor and my Aspec GT42R kit which is topic of this thread...
Last edited by ErnieT; 08-02-05 at 06:18 AM.
08-02-05, 06:18 AM
#41
Originally Posted by ErnieT
Alex,
Im happy for you. Not seeing the welds is not a priority for me as it is making big horsepower. Ross Machine has a 6second pro car(record)Bullish, 7.00 second outlaw car(MSP), and 8.00 second street car(MSP) under its belt for accomplishments. Im not really concerned with Mickey Mouse., I just want big power which is what they do with proof backed results on the track as well as flowbenched.
Im happy for you. Not seeing the welds is not a priority for me as it is making big horsepower. Ross Machine has a 6second pro car(record)Bullish, 7.00 second outlaw car(MSP), and 8.00 second street car(MSP) under its belt for accomplishments. Im not really concerned with Mickey Mouse.
, I just want big power which is what they do with proof backed results on the track as well as flowbenched.
Hope the new setup works for you!
08-02-05, 06:20 AM
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Originally Posted by KNONFS
Your other intake setup has been proved up to 7.6, rotary proven Hope the new setup works for you!
Hope the new setup works for you!
08-02-05, 06:28 AM
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Originally Posted by CYM_T-61
Damn everyone keeps taking **** out from under me 
Glad to see you sold it quick. Oh well I might be picking up a 45 k CYM this weekend so it is better than nothing.
Glad to see you sold it quick. Oh well I might be picking up a 45 k CYM this weekend so it is better than nothing.
08-02-05, 06:39 AM
#45
Originally Posted by ErnieT
Only thing that scared me with the J-Tech setup is it caused Dee's car to burn to the ground last year as the casting is not very good at all and the injector's were screwed into the casting which pull out very easily under high fuel pressure. (not a good design) Perhaps the reason its not made anymore.
, hope you make even better numbers with the new setup!
08-02-05, 06:29 PM
#46
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Ernie, glad to see that the 88 kit got sold. I can't wait to see the pictures, dyno sheet, and video from the new setup when it's finished!! Best of luck to you.
Zach
Zach
08-03-05, 01:05 AM
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Originally Posted by ErnieT
Alex,
Im happy for you. Not seeing the welds is not a priority for me as it is making big horsepower. Ross Machine has a 6second pro car(record)Bullish, 7.00 second outlaw car(MSP), and 8.00 second street car(MSP) under its belt for accomplishments. Im not really concerned with Mickey Mouse., I just want big power which is what they do with proof backed results on the track as well as flowbenched. In anycase Im not here promoting their shop, I was just happy about getting a ported motor and my Aspec GT42R kit which is topic of this thread...
Im happy for you. Not seeing the welds is not a priority for me as it is making big horsepower. Ross Machine has a 6second pro car(record)Bullish, 7.00 second outlaw car(MSP), and 8.00 second street car(MSP) under its belt for accomplishments. Im not really concerned with Mickey Mouse.
, I just want big power which is what they do with proof backed results on the track as well as flowbenched. In anycase Im not here promoting their shop, I was just happy about getting a ported motor and my Aspec GT42R kit which is topic of this thread...I'm just giving you a hard time Ernie. My intake manifolds are tested on a flow bench, along with each running being measured with a velocity sensor. By knowing the speed that the air is traveling, I can tune the runner length for a specific RPM range. It gets a bit more complicated than that, so i'll just leave the purpose of the velocity sensor, stated above, as is.
0 welds on the intake manifold is just icing on the cake!!-Alex
Last edited by TT_Rex_7; 08-03-05 at 01:19 AM.
08-03-05, 02:10 AM
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Originally Posted by ErnieT
Alex,
I agree and thats why I sold the aftermarket one. No sense.
I agree and thats why I sold the aftermarket one. No sense.
Originally Posted by TT_Rex_7
If you open the whole TB up, your going to end up with a tuning nightmare. The primary throttle plate opens first, allowing for an easy transition from idle to acceleration. The 2 secondary throttle plates open up when the pedal is farther down. I have no idea how far the pedal has to be down though. The best way to find out is to take the elbow off, and look at the TB while someone is pushing down the gas pedal.
You can run a single TB on an rx7, but if you go to large, you'll never get out of the driveway. It'll have MAJOR issues with surging. Rich (Auto Illusions) is using ~95mm TB (3 rotor) For a street 2 rotor, i'd go with ~80mm for a TB. You can only go larger for a purpose built drag car. They don't drive around at partial throttle, which is where the surging would occur, so they have nothing to worry about. If you don't have a problem with going WOT out of your driveway, then you should be just fine!
Your best bet is to do what's in the picture above. Make the secondary throttle plates one. You can also enlarge the primary throttle plate as well.
-Alex
Edit: Just in case anyone is wondering, this is why our cars don't have a plenum. If they did, the air coming in from the TB would go to both the primary and secondary runners. Of course, they would had to run a single TB also. By doing that, the car wouldn't be near as smooth coming off idle. Like I stated above, you can compensate by running a smaller TB, but it'll never have as nice of a transition as stock.
You can run a single TB on an rx7, but if you go to large, you'll never get out of the driveway. It'll have MAJOR issues with surging. Rich (Auto Illusions) is using ~95mm TB (3 rotor) For a street 2 rotor, i'd go with ~80mm for a TB. You can only go larger for a purpose built drag car. They don't drive around at partial throttle, which is where the surging would occur, so they have nothing to worry about. If you don't have a problem with going WOT out of your driveway, then you should be just fine!
Your best bet is to do what's in the picture above. Make the secondary throttle plates one. You can also enlarge the primary throttle plate as well.
-Alex
Edit: Just in case anyone is wondering, this is why our cars don't have a plenum. If they did, the air coming in from the TB would go to both the primary and secondary runners. Of course, they would had to run a single TB also. By doing that, the car wouldn't be near as smooth coming off idle. Like I stated above, you can compensate by running a smaller TB, but it'll never have as nice of a transition as stock.
08-03-05, 06:33 AM
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Damn,
Your quite the informative one! lol....Your are obviously above my knowledge level. I apprecite your telling me about the plenum. Now Im having second thoughts. I suppose I'll see what kind of power I make with the new setup first. How about extrude honing the upper and lower intake manifolds?
Your quite the informative one! lol....Your are obviously above my knowledge level. I apprecite your telling me about the plenum. Now Im having second thoughts. I suppose I'll see what kind of power I make with the new setup first. How about extrude honing the upper and lower intake manifolds?
08-03-05, 03:09 PM
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Originally Posted by ErnieT
Damn,
Your quite the informative one! lol....Your are obviously above my knowledge level. I apprecite your telling me about the plenum. Now Im having second thoughts. I suppose I'll see what kind of power I make with the new setup first. How about extrude honing the upper and lower intake manifolds?
Your quite the informative one! lol....Your are obviously above my knowledge level. I apprecite your telling me about the plenum. Now Im having second thoughts. I suppose I'll see what kind of power I make with the new setup first. How about extrude honing the upper and lower intake manifolds?
When I started designing the intake manifold for my car, I kept the runners totally smooth, until I reached the injectors. I went back with a wire brush in the CNC, and "roughed" the runners up a bit from where the injectors are, until it enters the motor. It's just slight scratches, so it should create enough turbulance to mix with the fuel, but not enough to really effect performance.
I know people have made huge numbers with the factory UIM/LIM, but i'd burn the damn thing!
If room allows, id go with the Xcessive LIM, and keep the factory UIM. There's been alot of issues with it hitting various turbos, but I think Ralph runs a GT42R from A-Spec, with his LIM. Later on, you can build an UIM, and switch to a single throttle body, and see how it reacts to diffrent sizes. I'd start off with a small TB, and work your way up till you have problems.The only issue I have with the Xcessive LIM, is the huge taper and transition from a circle to an oval. The + is it equals out the runners. The reason the factory/Xcessive LIM have such a large taper is to compensate for the restriction of going from a circle to an oval. By adding the taper, it keeps the velocity up. However, that transition is still a restriction, and the taper is making the runner length seem shorter. When you add a taper, it speeds the velocity up. So, if you took a 12" runner without a taper, then you take a 12" runner with a taper, the air will travel faster through the 12" runner with a taper. This in return, makes the runner seem shorter.
Now, your probably thinking, why the hell did Mazda make a transition instead of keeping the runners oval?! Well, it's easier to make the mold for a casting that has circle runners, than oval. Besides that fact, they'd have to have a TB with oval throttle plates, and chances are, they grabbed that TB from the parts bin, and didn't want to fool with making a new TB. Obviously they couldn't grab the intake manifold from the parts bin, and had to make it, but it's easier to make just the intake manifold, than the intake manifold and TB.
Hope this helps some Ernie!
-Alex
Edit: Woot! 1,000th post!!
Last edited by TT_Rex_7; 08-03-05 at 03:13 PM.