[Supras] Awesome!

[berniek at technicaldevelop.com]

Time permitting, I'm going to make up a resistive voltage divider 
tonight for the stock boost gauge.  If the ball and spring boost 
controller proves inaccurate, it will be replaced.  I have already built 
a system based on a small well known commercial back pressure relief 
valve with a check valve in reverse parallel with it. 


    Bernie


Jeff Mohler wrote:
> Get a proper boost controller.
>
> Lots of windowed blocks out there of all types, due to going cheap on 
> boost control.
>
> You'll make more -reliable- HP with one.
>
> On 10/31/07, *berniek at technicaldevelop.com 
> <mailto:berniek at technicaldevelop.com>* < berniek at technicaldevelop.com 
> <mailto:berniek at technicaldevelop.com>> wrote:
>
>     Just installed a simple ball and spring boost controller last
>     night, with
>     a small bleed built in (Dawes).  Bench set it to about 10-12
>     PSI.  Took
>     the car out this morning, and when it got into boost, it broke the
>     rear
>     tires loose in second gear!  Mods are:  500cc Greddy, Lex AFM,
>     Cometic HG,
>     ARP studs, HKS air filter (will upgrade to one with better
>     filtration),
>     modified stock FPR, Walbro, RT 3" downpipe and cat, 80 mm HKS exhaust,
>     moved oil pickup 3'1/2" further back in pan.  Boost signal is
>     being taken
>     from 3000 pipe, so real boost may be 15 PSI.  Did not upgrade
>     intercooler
>     piping yet, but smoothed entry to 3000 pipe and cast elbow
>     underneath with
>     die grinder.
>
>     Still need to install AFR meter, new power antenna mast,
>     windshield washer
>     pump, and a few other things.  Until the AFR meter is in, I'm just
>     doing
>     short bursts past 6 PSI, followed by overrun to lube cylinder
>     walls.  Have
>     75 miles on engine.  Also intend to recalibrate stock boost sensor
>     with
>     resistive voltage divider at output, so can use stock electric
>     gauge on
>     dash (will also recalibrate scale at some time).
>
>     Wheels are late MkIV, with 17" X 9" rears with 275-40-17 Bridgestones.
>
>          BernieK
>
>
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