| [ Total Views: 1784 | Total Replies: 13 | Thread Id: 30548 ] |
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 DIY-DUB
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| posted on October 25th, 2004 at 01:23 PM |
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engine option
i no lotsa ppl have done a 13b but has anyone thought about a 20b? also y is the wrx engine so popular 2 use? |
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pete wood
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| posted on October 25th, 2004 at 03:35 PM |
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I am pretty sure the 20b would be impossible to register and besides it would make the car very tail heavy, not to mentions the power and torque
twisting the car in half 
Subies bolt up with an adapter and flywheel, they are cheap and plentiful, powerful and heaps of people know about them. Also, they are the sort of
motor VW would most likely have ended up designing if they'd stuck with boxers. They take all the good bits and of VW boxers and improve on them.
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quick camper
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| posted on October 25th, 2004 at 08:13 PM |
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I love the 20B RE:thumb, just to expensive $4700 front cut. Will fit straight in a kombi though.I chose 13BT in my kombi because I have two
type 3s and two spare 13BTs on the floor:kiss
400hp is enough!!!
What will the conversion be done on?
Azza
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71superbug
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| posted on October 25th, 2004 at 09:09 PM |
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u have 2 13b's :o. lucky stuff. im still chasing a 13bt dyno sheet. standard.
ALSO. i cant remember where. but i saw an image on some forum of some guy that had a 13b triple rotor motor. dunno how or why the hell he did it. but
it was a triple rotor 13b :|
Anthony.
[Edited on 25-10-2004 by 71superbug]
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Baja Wes
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| posted on October 26th, 2004 at 09:27 AM |
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a 20B is a 13B with a 3rd rotor.
I think someone may have been having you on. It would cost more to add a 3rd rotor to a 13B than it would to just buy a 20B.
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71superbug
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| posted on October 26th, 2004 at 09:29 AM |
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i know it would cost more. which is why i thought it weird.
but you cant go on cost. because after all. it costs a lot more to make a vw engine as powerful and reliable as a jap engine. but people still do it
no. i think they meant a 1.3 litre triple rotor motor.
Anthony
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71superbug
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| posted on October 26th, 2004 at 09:30 AM |
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that may sound a bit funny. but i know wat i am trying to say. just cant put it in words.
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Baja Wes
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| posted on October 26th, 2004 at 10:36 AM |
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a 1.3 triple rotor engine would be 100% custom made.
A 13B has 654cc rotors. 2 rotors gives 1.3L = 13B. 3 rotors give 2.0L = 20B.
Don't believe everything you see or read on internet forums.
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wacked1
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| posted on October 26th, 2004 at 02:07 PM |
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hi guys 13b tripple rotor does exist . it is owned by Matt aka hitman he lives in sydneys western suburbs
this is quoted off his website and it ids a full custom jobbie
cheers
wacked1
"Now , let us get this straight... this is not a 20B Mazda engine. It is a hand made 13B engine with 3-rotors. Built using a custom manufactured
crankshaft and a modified 12A Series 3 centre plate to accept a stationary gear , this is one unique engine. A 20B upper inlet manifold and throttle
body are used but the lower section does not fit because my engine is shorter , so a custom made lower section was fabricated. The engine uses the
front mounts with a custom cross-member leading to standard engine mounts"
YOU HAVE JUST BEEN DAKED
don't worry it's a VW thing
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pete wood
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| posted on October 26th, 2004 at 04:23 PM |
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no offence, but wouldn't it have been alot easier to put a 20B in? 
71superbug, you said this, "it costs a lot more to make a vw engine as powerful and reliable as a jap engine."
sorry, but a VW (cased) motor of the same size/power wil never be as reliable as a jap motor of the same size/power. The case just gets all unhappy
and moves around causing everything else to where prematurely. 
However, the aftermarket alloy cases can be an entirely different story, mmm...maybe I am splitting hairs, sorry :o
Unfortunately, you are right about the cost...:cry
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71superbug
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| posted on October 26th, 2004 at 08:31 PM |
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I KNEW I SAW THAT ON A WEBSITE SOMEWHERE. it is unique. but what does it have going for it? maybe hes taking the F1 theory. many chambers little size.
hehe.
anyone know of any advantage to doing the triple rotor 13b? :S
and yes. vw motors seem a tad too much to really be worth it.
unless you maybe grew up with them. but i sure didnt. 
Anthony
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pete wood
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| posted on October 29th, 2004 at 05:51 PM |
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I'm looking forward to someone making a kit to bolt subie heads onto a VW case.
Hint, hint....
Have to be cheaper than aftermarket race heads for VWs :duh
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boof2332
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| posted on November 7th, 2004 at 10:12 PM |
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There will never be an aftermarket race head for a vw that will be cheap...as it is after market. Subaru heads on their own would be just as
expensive...and even if we made them aircooled? you would have to port them and change lift and valve size etc.
A guy called Jim Fueling( I think) revolutionised vw building by making a big power out of vw motors but no one knew what they had in them.. He died
and all his stuff was auctioned off before anyone who knew about him found out. One of his 2.2 litre motors which made 400hp(no turbo) was on ebay and
on of the guys on the shoptalkforums got it and pulled it down for all to see...had modified harley heads(4 valves) and hilbourne injection. They
looked like a subi head.
Matt
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Baja Wes
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| posted on November 9th, 2004 at 01:34 PM |
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| Quote: | Originally
posted by wacked1
"Now , let us get this straight... this is not a 20B Mazda engine. It is a hand made 13B engine with 3-rotors. Built using a custom manufactured
crankshaft and a modified 12A Series 3 centre plate to accept a stationary gear , this is one unique engine. A 20B upper inlet manifold and throttle
body are used but the lower section does not fit because my engine is shorter , so a custom made lower section was fabricated. The engine uses the
front mounts with a custom cross-member leading to standard engine mounts"
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I stand corrected.
What a weirdo. The cost of the custom eccentric shaft would've been more than the cost of a 20B (unless he sacrificed quality).
I've seen custom made quad rotor 26B type motors to copy the old Le-mans rotary cars which were banned. Mazda originally called the quad rotor
engines 13J-M, which didn't make alot of sense. I guess they realised it made no sense as the next evolution of the quad rotor was called the
R26B.
So custom making a quad rotor would be cool, but a triple rotor is a little pointless.
quad rotor bmw...
http://www.mazdarotary.net/queenstbmw.htm
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71superbug
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| posted on November 9th, 2004 at 02:57 PM |
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how about these ecotec motors the yanks are always going on about..??
anyone have any idea of these?? and wat they are like. how much .etc? lots of people seem to think its a good option.
Anthony
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gayanne
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| posted on November 9th, 2004 at 03:05 PM |
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Im just happy to say i run a subie ej20 with no STI, runs 300hps 225kw 1bar 14psi D/tuned plus the heads are ready to take 400hps before any stronger
rods and pistons to be inserted and still be built under $10k and motor being reliable and the others??????????.JVLRacing
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