Is there any advantage of having Extrme Rotaries Billet Centric Shaft?
I know it does help a lot on the high HP Drag Racing Turbo 13B's, but I will like to know on a na road race motor.

 

if you have to ask that question here then you really should drop the "I know what I'm talking about" smack replies ...

 

Wait a minute--i thought you thought there was no difference between the builds?

 

On drag racing, some guys use the billet e-shaft for more durability over 1,000 HP.
This is a suggestion for you and please talk about the topic instead of trying to ridiculize the writer.

 

E85 is a great fuel for rotaries, especially turbo. I am in the process of building a 20B on E in a 7 and let's just say the HP figures we are shooting for are not for sane humans.

The only problem I have seen is the consistancy of the fuel from the pumps. It can vary greatly, which is a problem when trying to squeeze as much as possible out of a motor. Several local guys I know who run it have a tester they keep in the car at all times to make sure the fuel is properly blended.


Savetherotary,

Please quit trying to impress everyone w/ the knowledge you think you have. RElax hang out here and enjoy it. Not everyone here is stupid and needs to be convinced. It's all good we love the wankel as well.

 

quality of pump gas/ E85 seems to be getting to be more and more of a question for all of us?
Is the E85 getting more water in it?
I wonder what is the tank life of E 85 anyway?
Guess the street tune needs to have a wide compensation built in.
I am getting more interested in this approach. Havent committed yet.

Save the rotory--relax , i am just trying to figure out here you are coming from? You started out saying there wasnt any difference in a drag/ road race build and now you respectfully asked a question concerning a part that was beening used in drag race engines and not road race engines. Are you now recognizing that there is a difference in the builds?

 

Thanks guys.
I ran a na and a Turbo 7 down here in Miami with E85 from U-Gas and it's been sweet. It does consume about 30% more. but you get more power on the Dyno than pump gas and cheaper than race gas overall, plus it's like heaven to the rotary, and if you drive on the street and run short on gas you can pump regular gas just to make it back home.

OD - I'm interested on the difference you mention on the road race motor, about the water jacket mod to increase cooling for my na project motor.

 

its not the waffe cut you see a lot of. My engine from the outside appears to have another hole inbetween the trailing and leading sparkplugs that has been capped off. The water jackets in that area have been reworked to increase coolant flow and contact . Its a vital area that needs more cooling.
This engine also has increased flow of the coolant around the exhaust ports. I do have a larger delta from the intake side compared to the exhaust side now. Before this mod ( Cam is not talking about what he did) my delta was about 10F, post mod it is about 15-20F. I compared the heater hose temps (drivers side) to the ob2 temp to get this finding.
I do know this engine has been more difficult to cool than my others. It is putting more of a strain on the cooling systems and I had to modify them once again to keep it in the range I like. Especially the low speed temps.

That is interesting that if e85 cant be gotten then you can put gas in to make it home.
I didnt know that.
how is E85 on plugs and o2 sensors?

 

Mine runs cooler than the old 10 to 1 engine.......

 

E85 is great. I can run Race Plugs without fouling, no more engine flodding, o2 stays clean & clear plus the exhaust temperatures drop down a whole lot.

I was blending 50/50 on the na since the Webber was running way rich on pump gas. If you put it on top of your gas, your mixture will be leaner and viceversa. But it does not detonate as easy as you can go lean with confidence.

 

Might want to think about what you are putting here before you get people trying to run 13:1 AFR's at 15 psi and 18* of timing. I know I am stretching it but this is how non factual things start.

It does give you more margin though, but nothing is bulletproof.

 

heck dont even run 11:1 with 18 degrees of timing