900 BHP and Half the weight !!!
Discussion
While at the Classic Car Show Yesterday there was a Company Called Hurley Engineering LTD, www.hurleyrotary.com
They Modifie the Mazda Wankel engine. Normal engine has 2 Rotors, but you can have 3, 4, 6 Rotor engines made up.
4 Rotor Engine 600 BHP
6 Rotor Engine 900 BHP
Advantages:
1. Half the wieght of a Chevy for the 6 Rotor, even less for the 4.
2. Lower Centre of Garvity.
3. Probably Cheaper exhuast system to make.
4. Cost was less for the compared BHP.
5. Quoted BHP is with Carb's, EFI would be more.
6. Turboed Skies the Limit.
7. Twin Spark, and three ignition cycles per rotor per rev. V8's only 4 Ignitions per Rev.
Disadvantages:
1. Sound would never be as good as V8
2. Looks Puney from the out side.
Any Comments lads.
They Modifie the Mazda Wankel engine. Normal engine has 2 Rotors, but you can have 3, 4, 6 Rotor engines made up.
4 Rotor Engine 600 BHP
6 Rotor Engine 900 BHP
Advantages:
1. Half the wieght of a Chevy for the 6 Rotor, even less for the 4.
2. Lower Centre of Garvity.
3. Probably Cheaper exhuast system to make.
4. Cost was less for the compared BHP.
5. Quoted BHP is with Carb's, EFI would be more.
6. Turboed Skies the Limit.
7. Twin Spark, and three ignition cycles per rotor per rev. V8's only 4 Ignitions per Rev.
Disadvantages:
1. Sound would never be as good as V8
2. Looks Puney from the out side.
Any Comments lads.
Clive, l remember the mazda rotaty at Le Mans in the mid 90s Cant remember year, mind's a blank, cant be bothered to find out etc. Do remember that 1300 cc of extreme noise became quite painful after a while but they won so cant be too bad. l wonder what these ones do in the noise department. Do you have a dbA reading? Could be an interesting project but part of the attraction is the sound of a V8. l cant imagine why anyone uses anything else in an Ultima.
THEMASH said: Good luck fixing that motor at your local shop. RX7 owners have a hard time fixing their motors as it is, can you imagine how hard a 6 rotor engine will be.
That's somewhat of a myth. I used to sell Japanese Imports in Manchester and there were one or two specialists in the area that were very competent dealing with Rotary engines. I think people are overly scared of them now.
Last month there was a Prog on Motors Channel, and RX7's with turbo's and Nos where running 8 Sec Quarter's, with only three rotors !! Double that and it's Cloud nine True Pub Bo
ks BHP.
Personaly own 2 Chevy V8's but I'm going to have to look into this a bit more, and visit this company, hopfully test drive something.
Watch this space.
>> Edited by GTRCLIVE on Monday 11th November 13:40
ks BHP. Personaly own 2 Chevy V8's but I'm going to have to look into this a bit more, and visit this company, hopfully test drive something.
Watch this space.
>> Edited by GTRCLIVE on Monday 11th November 13:40
I have a 450-rwhp single turbo rx7 and the rumors about the rx7 engine are true. They are very very prone to failure if tuned wrong. On good ping and you lose the engine. If you find somone that nows how to tune it your fine. Rotorys love gas alway tune them rich. On the other hand they make great power for the displacement. Overheating my be a problem, they generate allot more heat than a v8 and overheating is one of the leading causes of rotary failure.
Not to mention Ted is very against rotary’s in his car. The guy who works on my rx7 tried to order 5 to make 3 rotor racecars out of. Ted told him there will never be a rotary in is car and canceled his order.
I love my rotor but I am looking forward to the reliability of a v8. A few rx7 owners are now puting chevy v8's in their cars.
www.rx7club.com/forum/showthread.php?s=&threadid=37170&perpage=25&pagenumber=1
my 2 rotor engine
I belive the fastest rotary rx7 is srmotor sports
-8.20 @ 157 mph
-750+ Horsepower
-26psi of Boost
-Fully Built 13B Race Motor (that a 2 rotor)
www.srmotorsports.com/srourcar.html
>> Edited by mkoch1 on Tuesday 12th November 12:56
Not to mention Ted is very against rotary’s in his car. The guy who works on my rx7 tried to order 5 to make 3 rotor racecars out of. Ted told him there will never be a rotary in is car and canceled his order.
I love my rotor but I am looking forward to the reliability of a v8. A few rx7 owners are now puting chevy v8's in their cars.
www.rx7club.com/forum/showthread.php?s=&threadid=37170&perpage=25&pagenumber=1
my 2 rotor engine
I belive the fastest rotary rx7 is srmotor sports
-8.20 @ 157 mph
-750+ Horsepower
-26psi of Boost
-Fully Built 13B Race Motor (that a 2 rotor)
www.srmotorsports.com/srourcar.html
>> Edited by mkoch1 on Tuesday 12th November 12:56
Any idea why? I've always thought it would be a great idea (if anyone could be bothered with the hassle of it all). Sounds like he's a bit over protective.
mkoch1 said:Not to mention Ted is very against rotary’s in his car. The guy who works on my rx7 tried to order 5 to make 3 rotor racecars out of. Ted told him there will never be a rotary in is car and canceled his order.
MEMSDesign said:Any idea why? I've always thought it would be a great idea (if anyone could be bothered with the hassle of it all). Sounds like he's a bit over protective.
mkoch1 said:Not to mention Ted is very against rotary’s in his car. The guy who works on my rx7 tried to order 5 to make 3 rotor racecars out of. Ted told him there will never be a rotary in is car and canceled his order.
No clue why he hates rotary engines. I was worried he would cancel my order if he found out I own a rotary.
If one of you guys decided to go with a rotary please post the results. I for one have had enough fun with rotary engines and can't wait to feel the power of a good v8.
If anyone is interested in how a rotary engine works, check out
www.rotaryengineillustrated.com/index.html
On a side note has anyone ever considered Buick 3.8i turbo V6. I know nothing about them other than every grand national I have ever seen at the drag strip leaves the line on 2 tires and run 10-11’s in the quarter mile.
mark
You'll have major issues getting a non-turbo, mid-engined rotary car to pass trackday noise restrictions. A guy I know used to run a single seater with a n/a 3-rotor engine, he ended up with a hideous silencer the size of a waste paper bin sticking out the end of the (already well silenced) exhaust system for trackdays to keep the noise down.
Sounds rapid! 
GTRCLIVE said: While at the Classic Car Show Yesterday there was a Company Called Hurley Engineering LTD, www.hurleyrotary.com
Interesting site. Unfortunately, when I click on the special projects page, it says that it can't be found. The only other reference I saw to engines with more rotors was on another page of this website in which they mentioned building single, three, and four rotor engines, but not six. I wish I could see the other page but don't know what the problem is. I guess that they told you about some interesting toys they build at the show.
They Modifie the Mazda Wankel engine. Normal engine has 2 Rotors, but you can have 3, 4, 6 Rotor engines made up.
Yes, but keep in mind that Mazda did make a three rotor engine for the home market. I'd love to see more information on the four and six but can't find it on the site. Sounds like they're fantastic engines.
4 Rotor Engine 600 BHP
6 Rotor Engine 900 BHP
Advantages:
1. Half the wieght of a Chevy for the 6 Rotor, even less for the 4.
I've seen the weight of the first gen small block Chevy as 575 lbs for a fully dressed, all-iron engine. Most who put a first gen SBC in an Ultima tend to put one with an iron block but aluminum heads, which save about 45 lbs for a 530 lb engine. Some who weighed their engines claimed even less.
I've seen references to the weight of the two-rotor Mazda rotary engine as being somewhere around 200 lbs. You're claiming only an extra 65 lbs for an extra four rotors??? Or, even if you compare it to the all iron Chevy, a six rotor Wankel will weigh only 85 or so more pounds than its 200 lb, two rotor brother? I'm having lots of trouble believing this.
I've been led to believe that cars using rotaries need lots of heat shielding, thus adding significantly more weight also. I don't know if this is true.
2. Lower Centre of Garvity.
3. Probably Cheaper exhuast system to make.
4. Cost was less for the compared BHP.
A custom built, multi-rotor Wankel made out of two rotor engine parts can be cheaper than the king of cheap power, the Chevy engine?
5. Quoted BHP is with Carb's, EFI would be more.
6. Turboed Skies the Limit.
7. Twin Spark, and three ignition cycles per rotor per rev. V8's only 4 Ignitions per Rev.
I don't quite get point 7, at least not how you stated it. Conventional V8s, just like all other four-stroke piston engines, have one ignition or power stroke per two revs, but rotaries have one per rev, which is twice as many.
Disadvantages:
1. Sound would never be as good as V8
That's certainly very subjective. I love the sound of a V8, but I think that a high revving screamer, such as a rotary can sound great, too. Not necessarily a worse sound, just different.
2. Looks Puney from the out side.Any Comments lads.
I don't think that's an issue.
Hello, I'm only 19 so feel free to dismiss my idea. But before i found this car I was in love with john lingenfelter's corvettes. He makes monsters using the LS1/6 and Twin turbo setups. I think he uses Garret turbos from Incon if im not mistaking. But if you could make this work it would be a great engine. His top of the line Vette uses a 7.0 liter 427 LS1 and it runs 9.24 Seconds @ 150.27 MPH in the quarter mile. with an estimated 240mph top speed. heres a link to John's website. www.lingenfelter.com/ Anyways just a thought. - jayson
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