Indiana Drew

* If this is not the right place for these questions, please point me the right way *

DeTuning RENESIS 13B-MSP for:

• Use of lower octaine(lower quality) fuel
• Improved fuel efficiency
• Improved torque
• Improved reliability

Can these things be achieved by de-tuning the engine?

The reasons for my questions:

• Use of the engine/transmission as a possible replacement in Volvo c30X or Pinzgauer
• Looking for "bullet proof" tuning for an already reliable engine
• Confirmation that my opinion of this engine makes it a good candidate - best power to weight/size ratio ...

Thanks in advance for assisting a novice to this engine. What is the approximate length of the RENESIS 13B-MS/Automatic Transmission from fan to transmission output?

Indiana Drew

OK - Am I not asking the right question or am I not asking the question in the right spot ... Any suggestions?

elysium19

iTrader: (1)

What you're saying makes sense to some degree. What exactly is the application you're trying? Are you really trying to put a Renesis into this:
http://www.modderpoel.nl/phpbb/viewtopic.php?f=8&t=6143
???

If this is going to be for some sort of work duty, the Renesis is probably NOT the ideal engine....find a deisel or something. However, if you already have the engine and are trying to make it work with this vehicle, then I understand and we'll try to help.

Just looking at the photos I found, this volvo you're talking about isn't exactly a racecar. If the use will be for steady, relatively-low RPM driving/work, then that's not going to be good for a rotary's reliability. Also, if you're looking for higher torque, again, this is NOT a good engine to use, unless you already have it like I said.

de-tuning would require reprogramming the ECU, or using a different ecu. It must be done electronically, not mechanically, and the hardware you need to do that will cost in the range of $500-$1000.

Indiana Drew

This is what I was considering and I have neither the engine nor the vehicle - all theory to date ...



The idea is to convert the vehicle to an extreme camper/off roader. With the gearing, running at high reves is quite a likely same in low range for off road.

I do agree that doing a diesel retro is a very practical idea. The original engine is a Volvo B30 I6 detuned to 125HP to run on 87 octane.

The size and weight of the rotary is also very appealing, but everything you note points, as I thought, to more research needed. Thank you for taking the time to offer your insight. Here is a link to the vehicle stuff to which I devote the most time: Gelandewagen Fun

fastlaneracing

You want a renesis in that car? lol

seriously look for some other engine, thats too heavy. you will have poor fuel consuption and/or a blow engine in no time.

Rotary arent sutied for that, a Diesel or a V8 is the right thing for that Volvo.

btw that is a cool car, its called Volvo Valp in sweden.

KrumbZ

iTrader: (3)

lol so dumb!

KrumbZ

iTrader: (3)

put a suzuki samurai engine with a transfer case

dmp

There is no de-tuning required for using 87 octane fuel. And 87 octane does NOT refer to a fuel's quality - only it's resistance to burning. While I get no power increase, using 87 octane fuel my car gets a few MPG better than on 93

rotarygod

Clearly you've never heard of the Mazda Parkway Bus. Rotary powered! It weighed in a 5600 lbs (empty) and had a carbureted 13B that put out 135hp. Top speed was 120 mph. In spite of what the info in my link says, it actually only held 13 people. They report 26 but are confused with a larger piston powered version.

http://www.stormpages.com/fe3t/Rotary/Parkway.html

fastlaneracing

Yes I have heard about it, got through street rotary yesterday. I still dont think a rotary is suited best for that job, do you?

rotarygod

A small turbo diesel would clearly be better. Perhaps even a TDI turbo 4 retrofitted from a VW. However if he wants to gear it to a max top speed of about 60 mph or so and has a very nice cooling system that can cool the engine at constant high rpm use, then it could work fine. It will suck down gas like crazy but could work. Definitely not optimal. I'd use the diesel.

fastlaneracing

Jepp, boring suggestion but a turbo diesel is the best solution.

But hey, please install a rotary in the Volvo and report back with pics and videos. =) it would be unique and cool.

Indiana Drew

Will do!