Other Engine Conversions - non V-8 Discussion of non-rotary engines, exc V-8's, in a car originally powered by a Rotary Engine.

Since lots of people mistake RX-7s for Porsches anyway...

Old 07-14-09, 11:45 AM
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Since lots of people mistake RX-7s for Porsches anyway...



+





Whaddaya think?
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Old 07-17-09, 09:38 PM
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Old 07-17-09, 09:51 PM
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dont those have some weird *** rear transmission thing going on?
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Old 07-17-09, 10:36 PM
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$$$$$$$$$$$$$$$
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Old 07-18-09, 08:43 AM
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Originally Posted by Miata_mx5 View Post
$$$$$$$$$$$$$$$
+1. that thing's gonna be sooo custom
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Old 07-18-09, 09:26 AM
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I've never heard anyone mistaking an RX-7 for a Porsche.

For one thing, RX-7s are reliable...

(For another thing, RX-7s rust if you look at them funny )
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Old 07-18-09, 09:37 AM
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Nothing wrong with being original. That being said, the 928 motor isn't really all that great. If you're wanting it just for the "yeah, I did that" factor, go for it! Otherwise, might I suggest you pick another motor.

Congrats on your award on the other forum that shall not be named.
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Old 07-18-09, 01:13 PM
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Originally Posted by 20B10AE View Post
Nothing wrong with being original. That being said, the 928 motor isn't really all that great. If you're wanting it just for the "yeah, I did that" factor, go for it! Otherwise, might I suggest you pick another motor.

Congrats on your award on the other forum that shall not be named.
i agree completely. i have never owned one but i hear they are very overcomplicated.
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Old 07-18-09, 04:04 PM
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928 engines are absolutely amazing pieces of machinery.
however... they are unnecessarily complex, such as having 5 different belts that could break.
you are also looking at one of the twin cam engines.. if you are going to use a porsche v8, please use one of the quad cam v8s out of the s4/gts 928s, they are much more powerful, reliable, and much more beautiful sounding.

these engines are twin cam v8s after all, so obviously they are capable of amazing horsepower.. but thats the problem, they are only capable of it, you will need to spend A LOT of money on all the internal parts for these engines to make them more powerful, as they are not mass produced.

if you want to keep weight distribution, you will have to put in a transaxle as well.. which will be complex and expensive, unless you are a master fabricator.

and yes, my friend has a 944, and people always get our cars mixed up. mazda did create the rx7 to compete in the same class as the 924/944 after all...
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Old 07-18-09, 08:11 PM
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i can see ppl do at first glance, the fc was actuall designed with styling cues from the 944 as it was doing extremely well in sales at the time in N.A., the market where the FB did the best and mazda wantd to market the FC to most of all. chack this out:

http://www.youtube.com/watch?v=dCLL5...eature=related
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Old 07-19-09, 11:10 PM
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Aside from the fact that the 928's engine is a POS that makes about 350hp in its top stock tune, breaks as much as turbo rotaries, and needs its timing belts replace every year. Sure.
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Old 07-29-09, 10:18 AM
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Originally Posted by peejay View Post

For one thing, RX-7s are reliable...
Lol, no they're not. I know nothing about Porsche motors or trannys, but that would be a bad *** swap.
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Old 08-01-09, 12:56 PM
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maybe its just me but i would rather do thisd swap bacwards a 13B-REW in a 928lol.
you should look at the BMW V12 they are about as long as a 2JZ which people have swaped,and its lowering hight(once you change the pump/pan to a drysump(very easy on that motor.)they are actualy quite cheap to get as they had a problem with electrical fires burning up about $15,000 worth of factory wiring but nothing that cant be solved with a stanealone ECU. they have awsome balance (youtube BMW V12 Nickel start) you could bolt up the standard BMW 5spd
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Old 08-09-09, 11:02 PM
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Originally Posted by peejay View Post
I've never heard anyone mistaking an RX-7 for a Porsche.

For one thing, RX-7s are reliable...

(For another thing, RX-7s rust if you look at them funny )
FCs get confused for them all the time. Especially convertibles for some reason...

Of course, mine's been called a Miata more than once, too.
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Old 08-12-09, 07:12 PM
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Originally Posted by SouthSideSlider View Post
maybe its just me but i would rather do thisd swap bacwards a 13B-REW in a 928lol.
you should look at the BMW V12 they are about as long as a 2JZ which people have swaped,and its lowering hight(once you change the pump/pan to a drysump(very easy on that motor.)they are actualy quite cheap to get as they had a problem with electrical fires burning up about $15,000 worth of factory wiring but nothing that cant be solved with a stanealone ECU. they have awsome balance (youtube BMW V12 Nickel start) you could bolt up the standard BMW 5spd
The BMW v12 is less reliable than the 13brew and the maintenance is more expensive.
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Old 08-16-09, 11:18 PM
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Goodluck.
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Old 08-18-09, 12:12 AM
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i autocross with my local porsche club, and i just wanted to fit in:
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Old 08-19-09, 03:22 AM
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Originally Posted by Barban View Post
The BMW v12 is less reliable than the 13brew and the maintenance is more expensive.
I beg to differ, working in a BMW shop I have yet to see an engine failure of the v12 motor.

transmissions are another story but the motors are bullet proof.

i am talking about the motor it self, not all the other crap BMW attached to it. we do see lots of cooling system issues with rubber lines and such but no engine failures.

and they sound sooooo.... damn mean with just the headers and cats on.
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Old 08-24-09, 01:41 PM
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i like it better with the rotary..but hey its your FC go for it.
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Old 08-25-09, 07:32 AM
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At least it'll sound great.
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