Hi guys, I'm about to install some of these and need a bit of advice on presetting them. The manual is in Jap and not really much use. I know roughly what length the rods should be set to but if anyone has any accurate data it would be appreciated.

 

Am I correct in thinking I'm setting the minimum opening pressure? i.e. with a boost controller in use I will be able to make more boost than the actuator preset but not less?? Presetting to 1.2 bar would mean I was stuck with that or higher on a wet day?? Logically then the preset should be a more comfortable level, perhaps 0.8 bar...

 

TIA

RobH

got mine set at 0.7bar

Mine are set at around 9-10 psi and the boost controller will control the rest

bear in mind that if you set it too low it will limit your max boost pressure

Edited July 26, 201015 yr by jaffa

Ok, thanks for that, but how did you equate adjustment length to boost pressure? Trial and error, lucky guess, or is there some reliable data somewhere that I've not been able to find yet?

Cheers

H

you attach compressor to the vac line and see what pressure is needed to open it and adjust accordingly

bear in mind that if you set it too low it will limit your max boost pressure

 

What would you set them at Jaffa. Im hoping 9-10 psi will be enough to gain higher boost?

I had found a table of lengths/pressures applied to HKS actuators for a Tercel online and was hoping for something similar for the Z. The table in the manual doesn't make much sense in Jap. The problem I have is that a mate is doing the job at his garage which is 100 miles away, I won't be there and he wont want to be messing about too much, he'll put it on the ramp and bolt 'em on but that's about as far as it goes...I'll see what he says but I expect I'll get what I pay for, which is nil.

 

Doesn't have to be blindingly accurate as I'm using an AVC-r but it seems the AVC-r can only cope with a limited range of pressures so to get it set at my lowest required pressure (about 0.7 bar) with the AVC-r off would be the best option.

 

I reckon the lowest possible setting on these units will still be higher than my tired old refurb stock units, bigger diaphragms and better springs should improve response and boost holding as well.

Cheers

H

What would you set them at Jaffa. Im hoping 9-10 psi will be enough to gain higher boost?

 

you should decide what you think high boost is and work backwards. I have mine capable of 30+psi and base boost is 18psi as a result.

 

If you want less boost in the wet just use less throttle!

LOL - fair point. 30 psi is crazy talk tho! ;-)

 

Am I correct in thinking swapping the actuators doesn't need the turbos off?? I remember one being much more accessible than the other from beneath.

 

Cheers

H