Rotarius Maximus

I am currently installing a brand new 13B-rew (Yep, 0 miles) into my '93 R1 that has 3mm Apex seal upgrades and a Stage 2 Street Port from Atkins rotary, and I was wondering how much life the street port will "shave" off my engine's life expectency, if at all. I know that bridgeports only last to about 40k tops, and I was wondering if the street port might yield similar effects.

-Rot

duboisr

most high performance modifications will shorten life because of more stran and stress, a street port should live WAY longer than 40K if all other things are good and tuning is good

jspecracer7

I've seen street ports with 400 rwhp last over 40,000 miles...and the engine blew because of water seals.

with the stock levels of rwhp, you should last a lot longer....but it really is dependent upon how much you're on the throttle.

93TTRX7

Rotary Power advised me that a street port doesn't shave any miles off your engine. The only thing a port does is provide a bigger passage for fuel and oxygen

F=ma

What's the typical life of a stock 13B-REW?
How about one with reliability mods?

And one with reliability mods + street port, or reliability mods + bridgeport?

(sorry didn't want to start a new thread, and I figured ppl in this thread could answer this question)

FDdRIFTER2

the bridgeport drastically reduces the engine life. bridgeported engines usually last from 30,000 to 40,000 miles even with the reliability mods.

Kiflin

Ported engines last a little more than 40k, simply because their designed for high performance and hold a lot of strain on the engine.

Mr rx-7 tt

iTrader: (5)

A STREETPORT will NOT shorten the life of your engine, actually everything being equal it will give it a longer life.

P'cola FD

Not to sound like a dick.....but everyone who has not either a) owned a ported engine, or b) built a ported engine...please don't post.
Street porting does little to harm your engine when done right. Bridgeporting does shorten engine life, but I've heard of people going more than 40k. In the end, it boils down to how you treat the car i.e. maintain fluid levels and conditions, don't flog it until the ENGINE is fully warmed up (not just the coolant on your gauge), having the engine properly tuned and built, and making sure to never overheat/overboost the engine.

neoamd

iTrader: (2)

Change the oil every 2k.
Change oil filter everty time with oil.
Change fuel filter every 10k.
Let the car warm up properly before boost.
Let it cool down properly without boost (turbo timer)

It should last a good while! Dont abuse her though! The RX7 is like a baby.. in need of constant attention. If you dont have time for her either pay for someone to do it or sell it to someone who will.

Josh

93TTRX7

first thing i did was ask Jeff about a street port...he said it wont shorten the life of your motor. He asked me once where I get these rediculous conclusions from...lol...I didn't give out any names tho

mrFD3S

Where did U get a brand new engine from ?

maxcooper

I don't think a street port will have any effect on the life of the motor.

My understanding of the bridgeport is that the bridge bends and/or breaks after a while. You don't have a bridge with a streetport, so this should not be a problem for your engine.

You probably have a rebuilt engine with 0 miles on it. A new engine with 0 miles would be very expensive. I reused the side and end housings on my engine and it still had over $4000 worth of new parts in it. I imagine it would be $6000 or more for a whole new engine in parts alone. Add another $1-2K for porting and assembly. Ouch!

-Max

93TTRX7

damn who did your motor?

rpm_pwr

LOL! Australia is full of BP's with 100k+ on them. Most eventually get retired because of the noise

-pete

Erdin

are engines with bridge ports hard to start.
regards
Erdin

Kiflin

God who brought this thread back..