how much boost ?

[turbojayman]

i have a 87 gn stock motor whats the most boost can i run ?

 

[TurboBuRick]

The octane makes all difference. On street fuel (93oct) around 17psi.

On race gas you can run more.

 

[turbojayman]

boost

thank you what about 109 octane ?

 

[ttaowner]

need to have a fuel pump,hotwire kit,fuel pressure gauge that can be read while driving the car, adjustable fuel pressure regulator and a tuning device before you turn it up so you don't blow it up!!!

 

[scot w.]

Running 20+ boost with a TE-44 on 93 octane! (NO alky!! ) I owe it to the large front mount & turbotweek chip though..... :biggrin:

SW.

 

[bison]

As much as you can throw at it as long as there is no detonation and good control over the a/f ratio. If the engine is detonating and lean then you may be limited to only 14-15psi. 109 R+M/2 about 25psi with 20 degrees advance is safe.

 

[JustAnotherSix]

on 109 i ran 22psi with no probelm

 

[DIAZ 87]

before alky i use to run 100 octane with 22lb with no issues

 

[forzfed]

Running 20+ boost with a TE-44 on 93 octane! (NO alky!! ) I owe it to the large front mount & turbotweek chip though..... :biggrin:

SW.

I too have run 22psi of boost with 18' of timing on my ME with 94 octane. Our 94 is 10% ethanol but high in MBTE.

 

[northerngn]

see sig
23 1st and second gear then 3rd creeps to 25


on e-85


-dan