Single Turbo RX-7's Questions about all aspects of single turbo setups.

My R85 is ready to ship!

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Old 07-26-04, 06:23 PM
  #26  
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I spoke with Keith today and the first production run is indeed all vent-to-atm. I'm getting one of those so I can get my car back together, but I will need to get the dump tube plumbed back into the downpipe at some point. I made my request for the plumbed-to-downpipe thing a long time ago (before they were officially taking orders for the kit), so it's understandable that it got lost in the shuffle. No worries -- I am sure it will work out okay.

I'm just excited to get my car back on the road. I dropped off some stuff at Mazdatrix today and spent a little time with my car. The engine is assembled and ready to go. I dropped my intake manifolds off for ceramic coating and my injectors off for cleaning today, so I should have everything I need to start getting the car back together in a week or so. After the initial assembly, I'll need some custom work for intake pipes and stuff and then it should be ready to drive. I'll tune it after the initial break-in, probably after SevenStock.

-Max
Old 07-26-04, 07:16 PM
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Originally Posted by allrotor93
dee is on vacation this whole week. my car is at the welding shop for the turbo to ic pipe. mine will be tuned next monday. i didnt see any dt to dp kits but they may have already been made. contact keith and he can help.
I may also be coming down on Monday with Ccarlisi. Im dropping off my FD for the R85 turbo kit install and Chris is getting his single tuned. Will you be there Monday the 2nd of Aug?

Last edited by ZoomZoom; 07-26-04 at 07:18 PM. Reason: Typo
Old 07-26-04, 08:17 PM
  #28  
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Originally Posted by maxcooper
I'm getting one of those so I can get my car back together, but I will need to get the dump tube plumbed back into the downpipe at some point. I made my request for the plumbed-to-downpipe thing a long time ago (before they were officially taking orders for the kit), so it's understandable that it got lost in the shuffle. No worries -- I am sure it will work out okay.


-Max
Congrats Max. I can't wait to hear about how it compares to the Apexi on the track.

A competent tig welder should be able to make you a dump tube in 1-3 hours of shop time. Currently I have mine vented, and I must admit it's not as bad as I expected. I was originally planning on having it routed back into the exhaust system in front of the cat, but since the noise isn't so bad I may route it in after the cat to reduce backpressure at wot.
Old 07-26-04, 08:32 PM
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sk8world you already got your kit??? Wait was the a/r on that was it the .85?? I am still waiting and am just wondering when I am gonna get it?
Old 07-26-04, 11:37 PM
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Originally Posted by CCarlisi
Congrats Max. I can't wait to hear about how it compares to the Apexi on the track.

A competent tig welder should be able to make you a dump tube in 1-3 hours of shop time. Currently I have mine vented, and I must admit it's not as bad as I expected. I was originally planning on having it routed back into the exhaust system in front of the cat, but since the noise isn't so bad I may route it in after the cat to reduce backpressure at wot.
Thanks Chris. I'll be sure to post about it when I get back to the track. I'm sure it will work very well out there.

-Max
Old 07-27-04, 05:09 AM
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Originally Posted by ZoomZoom
I may also be coming down on Monday with Ccarlisi. Im dropping off my FD for the R85 turbo kit install and Chris is getting his single tuned. Will you be there Monday the 2nd of Aug?


i think i will be there. hopefully dee was able to drop my car off at the welding shop last friday.
Old 07-27-04, 11:48 AM
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I need to get up that way myself. How longyou guys going to be in Maryland?
Old 07-27-04, 01:02 PM
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Dave is your T04R ready to go??

If all you guys gonna meet DEE on monday, August 2nd..
Can one of you guys call DEE, to see if he would be interested in
a street tuning session??
Old 07-28-04, 10:16 PM
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hey max, do you autocross or road race. i am thinking about auto crossing and having fun on track days. the only problem is how effective is it with a big single turbo. i have a t78 and don't see 14 psi till 3800 rpm. should have gotten the gt35/40. thanks in advance. kevin
Old 07-30-04, 12:13 AM
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I go to tracks for open track events (sometimes for practice, sometimes for time trials; not really racing). But I haven't been in two years due to not having the time or energy lately. I don't want something peaky for the track, so I can stay in one gear for most of it (3rd gear, with shifts to 4th for straights). The dyno curves posted for the R85 look perfect for that. Other track folks run T78s, etc, with no complaints about lag.

I think the stock twins would be best for autoX, but that won't stop me from trying it with my big turbo if I get the itch.

-Max
Old 07-30-04, 11:42 AM
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thanks....i think i would in the super modifed class right. kvn
Old 07-31-04, 07:53 PM
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Yeah, if AutoX classing is important to you, read the rule books before ordering mods. I would guess that a single turbo would bump you out of any "normal" classes.

-Max
Old 08-01-04, 06:53 PM
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anybody talk to dee since he left for vacation? anyone know the schedule?
Old 08-05-04, 07:31 AM
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allrotor93, hit me up when you are going to be there, i want to see the finished monster. and maybe you can take me for a ride in it so i know what i'm going to be getting myself into next summer!
Old 08-05-04, 06:38 PM
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My kit arrived this week. Everything looks great and the turbo (turbine especially) is nice and big . I can't wait to see how it performs.

-Max
Old 08-05-04, 11:45 PM
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post pics max!!!!

i wanna
Old 08-06-04, 05:15 PM
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Come to SevenStock to see it. I dropped it off at Mazdatrix today for them to install it with my rebuild. I didn't take any pics first, but it looks just like the pics on kgparts.com. My pics are notoriously lousy, too, so you aren't missing much.

-Max
Old 08-08-04, 10:54 PM
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Max what size is the downpipe for the R85? I don't see it on the site.
Old 08-08-04, 11:53 PM
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It's 3". There is a picture of the kit (including downpipe) at http://kgparts.com/R85.htm.

-Max
Old 08-09-04, 12:06 AM
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You gonna give me a ride when you get that all running Max? Trying to decide what turbo I wanna go with.
Old 08-09-04, 12:20 AM
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I thought a 3 inch dp was only good for around 500-550rwhp according to Steve Kan. I guess it's good enough for 600 rwhp.
Old 08-09-04, 12:58 AM
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I don't know if a 3" downpipe was used for the 25psi dyno -- the page says that was a pre-production setup and that there would be some changes in the kit form. I would be very satisfied with the 15 psi dyno results , so the 3" downpipe doesn't concern me at all.

Also, Steve may have meant "a 3" downpipe will start to become a significant restriction above 500-550 RWHP". That doesn't mean you can't make more than 550 RWHP with a 3" downpipe, it just means that it isn't ideal. I don't want to put words into Steve's mouth, but that is how I would interpret any such statement.

-Max
Old 08-09-04, 01:05 AM
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Originally Posted by Kari
You gonna give me a ride when you get that all running Max? Trying to decide what turbo I wanna go with.
Sure, you can have a ride. It should be "done" in a few months. It will be running for SevenStock, but it won't be tuned yet, most likely.

-Max
Old 08-09-04, 07:39 AM
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So on the first graph where the boost is set at 15 did it get there at around 4200??
Sorry my dyno reading skills arent that mad yo

And then it got 25psi at 5200?????
Old 08-09-04, 08:42 AM
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dude i think i remember demetrios saying that it was actually 14psi, it just says 15 on the dyno.


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