i have a 1988 GXL, with approx 150k, should i rebuild it first or should i just slap a turbo on it? if i do slap a turbo, i dont know what i should get, a stock one, or whatever...please help

 

Dont turbo that motor. Pull it out, put in a turbo motor and all supporting acessories. It will be cheaper, will last longer, and will preform better.

-Jacob

 

thanks man, how much u think a turbo motor run for?

 

hhmm easier? maybe a bit... however cheaper? i dont know about that.... that varies on how you do it ... and btw there is no such thing as "slapping" a turbo on there heh.... it requires a good bit of custom work and fabricating.... and if you tune it right that motor will be just as reliable as a turbo motor..... people assume high compression motors+ turbos = unreliable... hell if you tune a actuall turbo motor wrong or bad it will blow just as fast... its all about tuning, when people will learn that i dont know but if you do turbo the motor at least do a compression test to verify its not on its way out... if its healthy then hell turbo it

just my .02 cents
christopher

(115k on n/a motor and turboing it now)

 

**** why cant she log out before i get on the computer... thats me so if you had any questions ask me not her cause she wont know ****

 

I also think that it would be cheaper to turbo your engine and easier as far as mechanically just harder in fabing parts. if you use a stock t2 manifold,turbo, dp and cat, fuel pump(ive got them lying around btw ) then you just need piping, oil and coolant feed and return lines, some sort of fuel controller, i/c, and a good tune on around 6 psi and Ill bet it would perform just a bit better than a stock T2 because of the higher compression. But the key is a healthy motor. Because if your motor is on the way out a turbo will just get you there quicker. I wouldnt go over 8 psi on a high mileage engine. A new tII swap (motor/wiring harness/etc) thats jdm usually costs under 1k but they cores usually need a rebuild so add a couple grand depending on how you do it. Thats just my .02

 

isn't that the truth. haha

 

thanks alot, im really new at this rx-7 thanks for the help...so is it safe to put a stock turbo II on my N/A motor with 150K+ miles, or an aftermarket turbo?? im only scared cuz i dont want my motor to blow cuz of the high miles, and im putting a turbo on it.

 

like i said you cant ask us if its safe or not... we do not know the condition of your motor... thats up to YOU ... you need to get a compresson test done...(cheap way is a piston compression tester from autozone) its free to rent and pull the leading spark plug.... crank the motor for a few seconds and observe the readings on the guage .... should be 3 even bounces hopefully 30psi or more... 90-100 psi total is ok... 100-110 is good and anything over that is great..... look up rotaryressurection.com for more detailed instructions on a diy compression test... or just take it to mazda and get them to do it but thats at your own risk and will cost alot... if you have a healthy motor and know how to tune well then its safe for a turbo.... hell sonicrat is making a bolt on turbo kit ... you should look into that thread because if your new to these motors you might just need to buy a bolt on kit from him.....

christopher

 

k thanks, i was wonderin i got a brother who has a eclipse, he doesnt know either, but can a 14b turbo fit on a 13b?

 

You could safely run the stock turbo at low boost (6psi). Trying to push extra HP out of that tired engine much over that isn't suggested. A 14B turbo is WAAAY too small for an FC. DSM turbos are way too small for us in general.

If you're really interested, I sell kits to do just this. Check sig.

 

HEY!! well isnt that just so mean of you two !! .. and i do know a little bit .. not much but some ....

 

turbo'ing your n/a rx7 would cost what?
this s very quick becuase its late and i want to sleep
-turbo + mani + dp $300
SAFC (100-300) depending on which one you want
Intercooler ifyou could get the stock topmount to work $25 assuming you have a t2 hood, if not, then ad another 150+
Clutch (dont bother arguing w/me the stock n/a clutch at 100k+ mi is gong to take that for long) $250 if you do it yourself
Misc lines, things you break etc $200

So right there im guessing $1200, do everything yourself. your tranny/rear end isnt going to last. Your going to have to run restrictive exhaust and port the wastegate to keep the boost down our your going to be be a 1 rotor wonder. A stock T2 will beat you. Now, for anywhere 500-1500 you could have a turbo drivetrain in your car, and be much more reliable.

i said 500 because i have seen and know of right now turbo rx7's that run for sale at prices that cheap or CHEAPER( *cough $400 88 T2 needs lots of body love in mass cough*) that you could source everything from.