NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   Rotary Engine Building, Porting & Swaps (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/)
-   -   Porting Versus Mods (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/porting-versus-mods-31105/)

Dramon_Killer 12-31-2003 01:36 PM

Right now my car is pretty much stock outside of emissions, ps and ac being ripped out. I want more power but i probably don't have the money to go all out with the mods. I've got roughly 1 grand to drop right now. I want to get exhaust and intake, but i dont want to have to deal with ripping it back out and putting stock back in when i go autocrossing. So my question is this. Would street porting my engine be a feasible alternative? I won't have to replace anything inside of my engine as i have a fresh rebuild, but at the same time that is another problem, following the if it isnt broke why fix it guidelines. Anyone have any insights on this?

93BlackFD 12-31-2003 07:58 PM

how do you adjust the timing? and fuel?



all of those issues have to be addressed

j9fd3s 01-01-2004 12:30 PM

if anything you need a bigger turbo first before you port it

kahren 01-01-2004 01:34 PM

with portign on everythign else beign stock or atlest most of teh parts, you are not gonna notice much dirence at all, do allthe bolt ons then move on to the inside of the engine

rfreeman27 01-01-2004 02:51 PM

bolt ons...



Why do you need to remove your aftremarket exhaust for autoX? class rules or noise?

Dramon_Killer 01-01-2004 05:03 PM


Originally Posted by rfreeman27' date='Jan 1 2004, 12:51 PM
bolt ons...



Why do you need to remove your aftremarket exhaust for autoX? class rules or noise?

Jim told me that having exhaust and intake bumped me into the same class as vipers and vettes, where by having stock exhaust and intake will let me run in a stock class.

RONIN FC 01-01-2004 06:35 PM

You can get a street port, and keep it all stock. You dont even need to port the exhaust. There will be a nice difference.

Midnightdriver 01-07-2004 10:47 AM

No an after market exh. and intake will not bump you to the class with vetts and vipers. but it will put you in a higher class. and do the bolt ons first. see what you get.


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