Resetting Adjustable Nismo Pressure Reg?

[LedZepLen]

My buddy was dicking arround with it in his dads shop trying to get my car started but it turned out the fuel system was backwards and when i figured it out i just had and still have the stock one on. But to give you an idea how messed up my Nismo one must be they were going all the way from tight in to loosened right out. From what i heard you need to make only slight adjustments at a time from the factory setting of 1:1.

Could someone count the threads on theirs please from the lock nut to the top nut???

If yours is adjusted just say for what.

I'm rebuilding my tdo5 16g this weekend and run 15psi to an rb20det plus redoing my intercooler piping so i'd like to have this stupid reg on and able to make smart adjustments before hitting the strip.

Thank you and have a good laugh if anything.

[GeeTR]

You cant change the ratio afaik, its either 1:1 always or not. (almost all are 1:1 for FI applications)

The adjustment is for setting the initial base pressure. 40, 43, 50, 55psi what ever; then every pound plenum boost pressure gets added on top.

Figure out a way of reading fuel pressure (mates, dads shop should have a mech gauge and some fittings) then adjust the Nismo reg as required.

Edited July 25, 2008 by GeeTR

[The Dan]

Exactly.....and it doesn't matter what threads are showing on someone elses. Their fuel pump could be arse so it will throw everything out of wack.

Mech gauge and do it properly