My 83 12a turbo......Video
05-27-07, 06:55 PM
#1
Full Member
Thread Starter
Join Date: Oct 2004
Location: EDMONTON ALBERTA
Posts: 82
Likes: 0
Received 0 Likes
on
0 Posts
My 83 12a turbo......Video
Hey Guys,
Ive been on this site for about 4 years and never posted a pic or video of my car. I know I love seeing other people's Rx-7's in action and figured maybe someone would enjoy watching this vid.
Basically im running a 12a stockport, s4 turbo, 45 dcoe, and all the other stuff like upgraded fuel system and intercooler. Im currently at 10-11 psi, and im running a little rich while cruising in the vid because i just put in a new main stack ( f7 e tubes, 150 air correctors, 195 mains). I was trying to get rid of my part throttle while accel lean condition. I thought the float level was dropping and exposing more of the e tube thus making it leaner, but now I have rich e-tubes (f-7's) and it still is doing it. I think I need to throw in some smaller air corrector's. Anyways Ill shut up now, here's the vid
http://www.youtube.com/watch?v=vAhVXSb9-lg
Its not great, my new Hawk pads squeal like a bitch and my girlfriend (cameraman) gets a little bouncy at the end.
Thanks everyone, my car would never be what it is without this forum
Brendan
Ive been on this site for about 4 years and never posted a pic or video of my car. I know I love seeing other people's Rx-7's in action and figured maybe someone would enjoy watching this vid.
Basically im running a 12a stockport, s4 turbo, 45 dcoe, and all the other stuff like upgraded fuel system and intercooler. Im currently at 10-11 psi, and im running a little rich while cruising in the vid because i just put in a new main stack ( f7 e tubes, 150 air correctors, 195 mains). I was trying to get rid of my part throttle while accel lean condition. I thought the float level was dropping and exposing more of the e tube thus making it leaner, but now I have rich e-tubes (f-7's) and it still is doing it. I think I need to throw in some smaller air corrector's. Anyways Ill shut up now, here's the vid
http://www.youtube.com/watch?v=vAhVXSb9-lg
Its not great, my new Hawk pads squeal like a bitch and my girlfriend (cameraman) gets a little bouncy at the end.
Thanks everyone, my car would never be what it is without this forum
Brendan
05-27-07, 07:17 PM
#3
05-27-07, 07:21 PM
#4
Full Member
Thread Starter
Join Date: Oct 2004
Location: EDMONTON ALBERTA
Posts: 82
Likes: 0
Received 0 Likes
on
0 Posts
Hey Dan,
I found that the clutch pressure plate was slightly hitting the raised portion of the flywheel and therefore not applying full force on the clutch disc due to being held back slightly. I thought maybe it just wasnt installed properly as far as needing to be rotated to the next mounting alignment. But i tried it in 3 different positions and all caused interference with the flywheel, just a shitty aftermarket design I guess.
I had the tranny out and new clutch in within an hour so it was no big deal.
I put the intercooler in last week, i ended up not putting it in front of the rad like we talked about but out front just like yours. I think it looks badass, ill try to grab a pic for everybody. I also realized today that there is no way that my stock front bumper is going to fit back on without some serious cutting disc action.
I found that the clutch pressure plate was slightly hitting the raised portion of the flywheel and therefore not applying full force on the clutch disc due to being held back slightly. I thought maybe it just wasnt installed properly as far as needing to be rotated to the next mounting alignment. But i tried it in 3 different positions and all caused interference with the flywheel, just a shitty aftermarket design I guess.
I had the tranny out and new clutch in within an hour so it was no big deal.
I put the intercooler in last week, i ended up not putting it in front of the rad like we talked about but out front just like yours. I think it looks badass, ill try to grab a pic for everybody. I also realized today that there is no way that my stock front bumper is going to fit back on without some serious cutting disc action.
05-27-07, 08:16 PM
#7
Full Member
Thread Starter
Join Date: Oct 2004
Location: EDMONTON ALBERTA
Posts: 82
Likes: 0
Received 0 Likes
on
0 Posts
Heres a few pics, I know its not the prettiest thing but its all I need. Lots of stuff still needs to be buttoned up the way I like it. Lots of things are just the way they are because it works that way, but I have many hours ahead of me making it a little more presentable and funtionable.
Trending Topics
05-27-07, 11:35 PM
#9
"Rocks aren't people"
Join Date: Apr 2007
Location: Round Rock Texas
Posts: 261
Likes: 0
Received 0 Likes
on
0 Posts
Hey Guys,
Ive been on this site for about 4 years and never posted a pic or video of my car. I know I love seeing other people's Rx-7's in action and figured maybe someone would enjoy watching this vid.
Basically im running a 12a stockport, s4 turbo, 45 dcoe, and all the other stuff like upgraded fuel system and intercooler. Im currently at 10-11 psi, and im running a little rich while cruising in the vid because i just put in a new main stack ( f7 e tubes, 150 air correctors, 195 mains). I was trying to get rid of my part throttle while accel lean condition. I thought the float level was dropping and exposing more of the e tube thus making it leaner, but now I have rich e-tubes (f-7's) and it still is doing it. I think I need to throw in some smaller air corrector's. Anyways Ill shut up now, here's the vid
http://www.youtube.com/watch?v=vAhVXSb9-lg
Its not great, my new Hawk pads squeal like a bitch and my girlfriend (cameraman) gets a little bouncy at the end.
Thanks everyone, my car would never be what it is without this forum
Brendan
Ive been on this site for about 4 years and never posted a pic or video of my car. I know I love seeing other people's Rx-7's in action and figured maybe someone would enjoy watching this vid.
Basically im running a 12a stockport, s4 turbo, 45 dcoe, and all the other stuff like upgraded fuel system and intercooler. Im currently at 10-11 psi, and im running a little rich while cruising in the vid because i just put in a new main stack ( f7 e tubes, 150 air correctors, 195 mains). I was trying to get rid of my part throttle while accel lean condition. I thought the float level was dropping and exposing more of the e tube thus making it leaner, but now I have rich e-tubes (f-7's) and it still is doing it. I think I need to throw in some smaller air corrector's. Anyways Ill shut up now, here's the vid
http://www.youtube.com/watch?v=vAhVXSb9-lg
Its not great, my new Hawk pads squeal like a bitch and my girlfriend (cameraman) gets a little bouncy at the end.
Thanks everyone, my car would never be what it is without this forum
Brendan
THX!!
05-27-07, 11:59 PM
#10
Full Member
Thread Starter
Join Date: Oct 2004
Location: EDMONTON ALBERTA
Posts: 82
Likes: 0
Received 0 Likes
on
0 Posts
I have a meth inj. for the car, just havent installed yet. I plan to go to 12-14 psi once the meth kit is in.
Its an AEM wideband. I thought 12:1 was a decent A/F for 10psi. I can throw the bigger mains back in and get about 11.2:1 A/F. Im still trying to tune the little bugs out of the drivability. Basically if I roll from a light and slowly floor it, the guage just goes max rich and the car sputters and backfires untill I let off, soo basically 1st gear right now is useless except for getting me to second. I dont know what the deal is, ive tried different fuel pressure, e-tubes, idle jets, mains, im just stumped. Thanks for the comments guys!
Its an AEM wideband. I thought 12:1 was a decent A/F for 10psi. I can throw the bigger mains back in and get about 11.2:1 A/F. Im still trying to tune the little bugs out of the drivability. Basically if I roll from a light and slowly floor it, the guage just goes max rich and the car sputters and backfires untill I let off, soo basically 1st gear right now is useless except for getting me to second. I dont know what the deal is, ive tried different fuel pressure, e-tubes, idle jets, mains, im just stumped. Thanks for the comments guys!
05-28-07, 12:33 AM
#11
I have a meth inj. for the car, just havent installed yet. I plan to go to 12-14 psi once the meth kit is in.
Its an AEM wideband. I thought 12:1 was a decent A/F for 10psi. I can throw the bigger mains back in and get about 11.2:1 A/F. Im still trying to tune the little bugs out of the drivability. Basically if I roll from a light and slowly floor it, the guage just goes max rich and the car sputters and backfires untill I let off, soo basically 1st gear right now is useless except for getting me to second. I dont know what the deal is, ive tried different fuel pressure, e-tubes, idle jets, mains, im just stumped. Thanks for the comments guys!
Its an AEM wideband. I thought 12:1 was a decent A/F for 10psi. I can throw the bigger mains back in and get about 11.2:1 A/F. Im still trying to tune the little bugs out of the drivability. Basically if I roll from a light and slowly floor it, the guage just goes max rich and the car sputters and backfires untill I let off, soo basically 1st gear right now is useless except for getting me to second. I dont know what the deal is, ive tried different fuel pressure, e-tubes, idle jets, mains, im just stumped. Thanks for the comments guys!
Actually with an m15 nozzle on the alky injection you're A/F's are probably alright. The alcohol should bring you to high tens, low 11's.
Your problem is midrange flooding. Your trying to go to big on the secondary jetting and not big enough on the primary. I'd try upping your primary jet 20% and down sizing your secondary around 20%. Then add a progressive style map based meth injection system.
After you get your WOT and midrange figured out then play with the air bleeds to get your cruise figured....
Good luck!
Cool little car!
05-28-07, 07:22 AM
#12
Full Member
Thread Starter
Join Date: Oct 2004
Location: EDMONTON ALBERTA
Posts: 82
Likes: 0
Received 0 Likes
on
0 Posts
I dont have primary's and secondary's, wish I did! Im running a Weber 45 sidedraft. 2 barrel baby! This thing is a bitch to tune for drivability, I think there are somethings Ill just have to live with. Basically I think that my 1st gear mega rich problem is due to velocity in the carb. If I rev the car to like 3k then aggresivley launch ( not really, but you get the idea) the car it wont bog, sputter, go hella rich. So its probally more just the character of a 2 barrell sidedraft more then anything else, unless someone knows otherwise???
05-28-07, 09:30 AM
#13
I dont have primary's and secondary's, wish I did! Im running a Weber 45 sidedraft. 2 barrel baby! This thing is a bitch to tune for drivability, I think there are somethings Ill just have to live with. Basically I think that my 1st gear mega rich problem is due to velocity in the carb. If I rev the car to like 3k then aggresivley launch ( not really, but you get the idea) the car it wont bog, sputter, go hella rich. So its probally more just the character of a 2 barrell sidedraft more then anything else, unless someone knows otherwise???
05-28-07, 10:35 AM
#14
what he was refering to is your pilot jets and main jets. In a 2 bbl sidedraft carbs the pilot jets act as the primaries in a 4bbl, and the main jet stack acts as the secondaries. What he's suggesting is that your progression from primary to secondary is too rich for the air velocity pulling through the carb. The overlap of the primary and main circuits is super fat right now. Raising the pilot jet size will raise the rpm at which it drops off and lowering the main size will raise it's starting point. So, what you're doing is effectively shifting the circuit overlap to higher in the rpm range where air flow through the carb has more velocity. Hope that makes since... give it a shot and watch your a/f's...
If you get a progressive map based alky inj. system it will also help. It will act more like a fuel injected car then. gradually upping the alky flow with boost.
I wouldn't mess with it again until you strap on the alky or you'd have to re-tune it all over agian.
05-28-07, 02:00 PM
#16
Full Member
Thread Starter
Join Date: Oct 2004
Location: EDMONTON ALBERTA
Posts: 82
Likes: 0
Received 0 Likes
on
0 Posts
Ill try to post up some underhood shots tonight. Im not tottaly satisfied with my intercooler piping as i basically had to make my carb box work as I didnt have time to cut a reweld the inlet for the intercooler piping to face the left hand side. I was going on a big organized road trip, hence that blue sticker in my back window (ill remove it immediately).
AS far as power.. I have no idea. I know that its quicker then a Porsche Boxster S, on the highway, hehe. If I had to guess, maybe 180-200 whp.
Ill also try to get a vid of my tach and speedo for everyone (mostly all those wanting to turbo there 12a, to compare). My car is sooo much fun, I wouldnt really ever see needing a quicker car for around town.
AS far as power.. I have no idea. I know that its quicker then a Porsche Boxster S, on the highway, hehe. If I had to guess, maybe 180-200 whp.
Ill also try to get a vid of my tach and speedo for everyone (mostly all those wanting to turbo there 12a, to compare). My car is sooo much fun, I wouldnt really ever see needing a quicker car for around town.
05-28-07, 07:14 PM
#19
Full Member
Thread Starter
Join Date: Oct 2004
Location: EDMONTON ALBERTA
Posts: 82
Likes: 0
Received 0 Likes
on
0 Posts
By the time your car is done ( well say next summer), i dont think there will be any pavement on the roads anymore. Its hard enough finding a smooth patch of pavement to go full throttle already. If im not carefull, im sure ill be busting diffs and tranny's.
Just so you know Dan, my car drives totally different from when you came for a ride, I got all the little issues sorted out. Ill have to take you for another rip once the meth inj. kit is in.
Just so you know Dan, my car drives totally different from when you came for a ride, I got all the little issues sorted out. Ill have to take you for another rip once the meth inj. kit is in.
05-28-07, 09:33 PM
#20
By the time your car is done ( well say next summer), i dont think there will be any pavement on the roads anymore. Its hard enough finding a smooth patch of pavement to go full throttle already. If im not carefull, im sure ill be busting diffs and tranny's.
Just so you know Dan, my car drives totally different from when you came for a ride, I got all the little issues sorted out. Ill have to take you for another rip once the meth inj. kit is in.
Just so you know Dan, my car drives totally different from when you came for a ride, I got all the little issues sorted out. Ill have to take you for another rip once the meth inj. kit is in.
Seems like your doing an awesome job working out all the quirks with that thing. I'm impressed with how fast you got that intercooler piping setup and everything running as good as it is!
