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hi,
what size of jets in amal valve for msd 380bhp+ chip,55lb siemen injectors?
have managed to spike 32psi but tails down to about 25 psi,
hoping for held pressure to be closer to 30 psi,
just had turbo rebuilt and new actuator -31 with 1/2 hole preload,was way more preload before,but hoped to jet amal valve to suit properly this time,
have pressure tested intake to 32 psi and found no leaks other than amal valve lid sealed that up,
You will struggle to hold that much on a T34 as the engine uses all the air the baby compressor can pump, so the boost naturally tails off at high rpm.
I would use one full hole of pre load
Last edited by James @ M Developments.; 17-11-2013 at 06:26 PM.
Not normally, some do need a -34 to reach 32lb peak, but not many usually the .48 which has more exhaust pressure
That's why my.48 has one then. spent a lot of time messing with jets think mine peaks at 32 ish and tails off to 26 afr still in the low 11's plenty quick enough with all that torque.
Mines on a -31, so was my saff, both were doing over 35lb peak, not many need the -34, and tbh the strong spring can bend the gate arm when they get very hot which is why I always try to use the -31 where possible.
Mines on a -31, so was my saff, both were doing over 35lb peak, not many need the -34, and tbh the strong spring can bend the gate arm when they get very hot which is why I always try to use the -31 where possible.
Bloody hell 35lb peak best I get another clutch then lol you prob have more torque than mine as wasn't you on a 4x4 exh manifold?
that great cheers,
been with this set up for few years now but always thought I had to much preload on actuator so with rebuilt turbo thought id try jetting amal propery,
James I bought your chip off your saph.... im running t34.55 and 55s... when I come to msd next year to get it all set up when the cars back together im guesing mines going to run some where near the 420lb that you had ? What bhp did you get ?
Instead of drilling the jets and trying to find the right size I have removed the jets and put an adjustable flow control thingy in line on the C and R ports. I found some small metal flow control thingys for fish tanks.
In this way its very easy to adjust it when on a test drive, until you have found the right setting. Just make sure that they can't move once set.
James I bought your chip off your saph.... im running t34.55 and 55s... when I come to msd next year to get it all set up when the cars back together im guesing mines going to run some where near the 420lb that you had ? What bhp did you get ?