weaklink

Alright, car makes great power, maybe too much. Now after second the engine just revs like it is in neutral. If I keep it in low it does ok, except doesn't pull quite as hard as it did at first. Is the auto tranny toast?

dclin

iTrader: (4)

Ouch, I've no idea - but I've decided to do the manual swap. Waht reason did RP give for not doing it?

Viper jr

What if you just give it light throttle once you get into that gear - does it still act like its in neutral or will it engage then? If it engages, I would think its your torque converter slipping, if not then I guess you lost that gear. Since your other gears are fine, I bet ya lost the gear.

BTW - might find this of interest: https://www.rx7club.com/vforums/show...threadid=26979

Viper jr

How come?

GsrSol

If it only does it in 2nd gear it's the tranny because the torque conveter is doing its job in all the other gears.

dclin

iTrader: (4)

Grass is greener on the other side of the fence? I guess it's just easier, as far as an ecu solution is concerned.

My problem is that there are not too many people I can rely on for Haltech tuning - the only one readily available will be devoting his time to his race car. The parallel thing you did with the stock ecu and the Haltech is cool, but if I'm doing it myself its got to be simple(r), hehe.

I think I am going to go with the Power FC, which I should be able to handle as far as the installation and basic tuning. It can probably be wired in parallel as well, but since it's almost literally plug and play, doing so would defeat one aspect of its advantages.

I'm getting ready to make my final decision as to an intercooler and intake, and obviously I'll need an ecu solution - so, I've decided to put off the single turbo for the moment and instead put the money towards a tranny swap.

A single turbo auto would still be interesting, and if there is someone proficient with Haltechs close by, it certainly something I'll revisit.

Viper jr

I remember seeing someone some time ago saying they were developing a way for the FC to communicate with the auto tranny - I wonder what happened to that, would be really cool.

Getting the Haltech set up doesn't take all that long and once its dialed in, it doesn't need to be touched but I know exactly where you're coming from about tuning the thing. I understand the basics of the fuel curve and what to do with it, etc., but I'm still too chicken$%^& to tune it myself.

Well good luck with whatever you end up doing.

weaklink

It does it an any throttle range. At first it seemed to slip and then catch around 3k or so, but now it just revs like it's in neutral. RP said the 5 speed swap was too involved and led to other problems. I don't think a single turbo auto is feasible, at least not with the stock minivan transmission.

dclin

iTrader: (4)

The guy at http://www.rotaryextreme.com installed a HKS T51, but I think the key is beefing up the tranny cooling system and tranny. I remember him saying its a complete Level Ten makeover.

Not trying to persuade anybody one way or the other, hehe - but here are some links to conversion resources in case you have not seen them:

Conversion details scattered between two pages
http://beyondtheredline.fd3s.net/fd3s_blue.html
http://beyondtheredline.fd3s.net/owners_5spd.html

http://exit13b.com/exit13b.com/

No mention, but they do the conversion
http://www.kdrotary.com (penn)

Ditto
http://www.mzmperformance.com/ (austin, TX, Goblin had his done here)

weaklink

yeah you're right, that does appear to be an auto. thanks for the excellent links. I have the parts for the level 10 conversion except for the valve body stuff. now if I can find someone to rebuild it. RP just wanted to swap a new MPV tranny in there.

Hyperite

Not in an RX-7, but my beater car ('89 Sable) does the same thing. I lost second gear and it kinda just bouces around in it for a few seconds before going to 3rd. Sure it's slow, but that's why my other car is Rex.
~Tom

weaklink

OK, so now I have noticed that if I start out in "L" and get to the speed I want, say 60, in second, then shift into "S" it will shift and the revs will drop. Then with light throttle it will hold that speed. I can even accelerate very slowly if I keep the throttle light. If I try to go to "D" (to see if I had 4th) it slips even more, but will still hold a bit. So, any ideas? I am looking for someone local to rebuild the tranny, but would be a lot less if I could just swap the torque converter. Also, who has good links for Mazda parts. Checked auto trader, NO GO.