RotaryRevn

Ok, I have asked this question in the Microtech section but only got one responce. I do appreciate the responce but would like a few more opinions on this since I am still hearing different things from different people I know.

Will I be ok running 550cc primaries and 1000cc secondaries on my series 4 motor with a Microtech LTX-8? Some people say that is too much of a change and some say it will be fine. Anyone using this set up or much larger secondaries?

Also will I be ok with running the stock series 4 fuel pressure regulator?

(I do have a set of 85 gsl-se injectors that were cleaned and tested at 720 cc by RC engineering so I could through those in the primary but don't really want to since my base map was set for the 550's.

My car is as follows. It's an 85 S model (no sunroof) with a series 4 turbo motor (stock internals). Series 5 turbo with a BNR stage 2. Micrtoech ltx8, bosch fuel pump, cheap ebay intercooler, griffen radiator, Guru lsd, gls-se fuel tank and pickup. Suspension and wheels to come once I get this thing going.






Thanks

Aaron Cake

iTrader: (1)

Should be fine. I don't see why people are saying that it's too much of a change since the Microtech gives you full controll over injector staging time and percent...

Yes, the S4 fuel pressure regulator is fine as well.

jkimbro

iTrader: (3)

As far as sizing vs. HP go here:
http://rx7.com/cgi-local/2ndgencalc.cgi

I've heard that going too big on secondary can cause issues, and running 720's on the front are better...are you planning to go bigger than a BNR stage 2? Because 1000cc's would be plenty...you could probably get away with 4 720's.

corriganjosua

thanks for that post i will be needing that