I believe the next incarnation of the LTX8 and LTX12 WILL control the MOP on an RPM (NOT map)-basis...

Jon/Dale/Brandon?

Rich
uk

 

s4 mechanical has 4 out puts and the 20b would need
three, not to mention that the three on the s4 pump
would only be feeding about 50% of the vol. that the
pump on the 20b would be putting out.

matt

 

this would be good enough for me a little extra oil
doesnt hurt.

matt

 

Matt/now, if I remove the stepper motor, could I run the 20B's OMP as-is into the rotor housings and a carb?

I think it was j9fd3s that said I could remove the stepper motor. I'd think that three OMP lines dumping into a carb's float bowl+all the rotor housings would be sufficient even if the OMP is in low flow mode or what it goes to without the motor. This car is for my dad, so premix is not really an option.

I think I'll just start a new thread when I get the engine, which should be soon.

 

once you take off the stepper motor the mop kinda looks like a mechanical one. i was thinking about making a bracket and a cable so you could make it mechanical, and have it work right. after that you ust plum the oil lines into the carb like an old school rotary

mike

 

I'll check it out when it gets here. Who knows, maybe I could fab a rod/cable and lever from the OMP to the carb.

By the way, does the 20B actually use six lines? If so, I'd like to keep the three stock rotor housing lines intact, and just plum the plenum lines directly into the carb.

 

It controls the S6 MOP, and it's a TPS basis. If the 20B-REW and 13B-REW MOPs are the same, then it will control the two. That's the best claim I can make until I get my grubby paws on one.

Brandon
BR7 Racing

 

the 20b has 3 lines, they go into the rotor housing, hmm so that means you can just leave em alone.

brandon: we've played with the s5 and cosmo pumps and they are electrically different, even though the harness plugs in. my hunch is that the cosmo and fd pumps are the same. it would be a matter of moving a couple of pins around (well figureing out what pins to move)

mike

 

Only three? Cool!

 

My experience with dealing with the 20b, 13bre and 13brew sensors and such is that the jap only motors MAY or MAY NOT be the same as the 13brew. My TPS on my 20B was not a 13bre TPS, nor was it a 13brew... my OMP is not a 13brew pump either, and I'm unsure if it is a 13bre pump. The OMP can't be THAT different... might just have to pin it out. I'm sure if an ECU can control an S6 OMP that it could control any electrical OMP, maybe with a bit of rigging, but it would work. I personally could care less about having an OMP. I'd rather make sure that there is oil going into my motor by premixing... Ive seen too many rotaries die due to the OMP failing, or the line becoming clogged or anything along those lines.

 

That's my personal feeling as well, but some guys prefer the zero-hassle nature of the MOP.

I'll be getting a 20B here really soon, and we'll see about it then. 'till then, it's premix.

Brandon
BR7 Racing

 

can you use the e6k to control the 20b?

what is the easier and the cheaper way?

 

ive had an e6k running my 20b for over a year now

mike

 

How about the Motec M48, will it run the 20B? It looks like you have to go with the M800 to run a 20B, but it's over 4k and way out of my budget..

 

if you have 3 ignition outputs it will run with no timing split. you need 6 outputs to do the timing split

mike

 

If it has 6 or more ignition outputs it will likely run a 20B. It's by no means certain, however - otherwise, I'd be running a FAST SEFI8LO on my car.

Brandon
BR7 Racing

 

Yes, Downing Atlanta ran their 3-rotors with the Motec M4 series. However, I don't know if the M4 series can run the split timing like the M8 series now can with the new software update. The best thing to do is to ask your local Motec dealer.

 

So would you be interested in buying them at around $2000 US for the M48 & $2600 for the M800??

 

No, because there would be no local support like there would if I buy from a US dealer. I have already had the displeasure of dealing with Australian dealers and their absurd tariffs, taxes, and severe lack of support after the sale. It will be a cold day in Hell before I send an expensive ECU through international mail for repairs and upgrades without insurance to avoid the silly taxes on an electrical component that came from Austraila in the first place. Thanks anyway.

 

Im in New Zealand............

 

So you are an authorized repair and upgrade technician for Motec? Are there no taxes and tariffs for sending a fully insured EMS to New Zealand? Also, are you authorized to sell Motec products to the US, and will your customers receive product support from the US dealers like Roger Mandeville? NZ is a long way to drive for tech support.