NoPistons -Mazda Rx7 & Rx8 Rotary Forum
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NoPistons -Mazda Rx7 & Rx8 Rotary Forum (https://www.nopistons.com/)
-   2nd Generation Specific (https://www.nopistons.com/2nd-generation-specific-17/)
-   -   differences in engines (https://www.nopistons.com/2nd-generation-specific-17/differences-engines-2537/)

Rotarydragon 05-14-2002 04:02 PM
Originally Posted by 13BAce' date='May 14 2002,16:55
[quote name='Rotaryman88' date='May 14 2002,17:44']Jspecs save you time and sometimes money, not in my case though :(



Also, according to Mazda, the Japanese Rx7s had 207HP in 1991...but I believe it had to do w/ emissions or something....
Come on, you can get 7 HP just buy getting a cone intake. :sarcasm:[/quote]

Cone intake? Heck I added 10hp alone with my Rotary Engine sticker and some yellow electrical tape!

:baaaa:

13BAce 05-14-2002 06:20 PM
Originally Posted by Rotarydragon' date='May 14 2002,18:02
[quote name='13BAce' date='May 14 2002,16:55'][quote name='Rotaryman88' date='May 14 2002,17:44']Jspecs save you time and sometimes money, not in my case though :(



Also, according to Mazda, the Japanese Rx7s had 207HP in 1991...but I believe it had to do w/ emissions or something....
Come on, you can get 7 HP just buy getting a cone intake. :sarcasm:[/quote]

Cone intake? Heck I added 10hp alone with my Rotary Engine sticker and some yellow electrical tape!

:baaaa:[/quote]

No comment. :rollwink:

LilFatCrazyWop 05-14-2002 11:27 PM
Jspec engines are better because in Japan they dont have emishon tests like u americans. so get rid of the cats and **** and all the little emishons thingys and bang! more HP

vosko 05-14-2002 11:39 PM
Originally Posted by LilFatCrazyWop' date='May 14 2002,01:27
Jspec engines are better because in Japan they dont have emishon tests like u americans. so get rid of the cats and **** and all the little emishons thingys and bang! more HP
it would be great if that post made any sense. the jspec doesn't have SMOG but they do have a cat still. a jspec won't pass US EMISSIONS testing. if do get a full exhaust you will need a FCD and upgraded fuel pump to have enough fuel....

The Blue Bomber 05-18-2002 12:00 AM
what about a cosmo?

do they bolt in in place of a 13b

i think they are the same size

i wonder what you would need for the conversion?

manifold ecu fuel pump etc...

vosko 05-18-2002 12:24 AM
if you want a cosmo you need custom k2rd motor mounts then need custom ems, etc :(

The Blue Bomber 05-20-2002 01:32 PM
Originally Posted by vosko' date='May 17 2002, 11:24 PM
if you want a cosmo you need custom k2rd motor mounts then need custom ems, etc :(
looks like i am going the route of a ported 13b then. :(

oh well i only wanted about 350hp at the wheels and i bet i could get that with some work and a bunch of money B)

turborotor 05-20-2002 10:22 PM
Originally Posted by 13BAce' date='May 14 2002, 04:49 AM
You'll have to switch the front cover and oil metering pump to the 87-88 style because on 89-91 cars the pump is computer controlled. On 87's it's mechanically controlled. You'll also need to use the 87-88 sensors.
You can run premix and not worry about changing the front cover.



I recently broke my 88 engine and had to buy a 89+ jpec because of the cost, availability and ease of swap.



So far I'm very happy with my s5 engine, it feel much stronger and smoother than my s4 engine. I didn't bother swapping out the turbo with the upgrade one i had. The turbo it came with had no shaft play. I didn't bother changing the front cover to go mechanical OMP. there was no oil leaks coming frm the front cover area so I better not play with it because is not broken and run premix.



C


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