Questioning turbo size

[michael evans]

heads cam and compression?

GN1 fully ported heads and intake with 9.1 compression, forged pistons

250 inch motor (0.30 over and stroked .125 inch )

 

[Mr.Spool]

GN1 fully ported heads and intake with 9.1 compression, forged pistons

250 inch motor (0.30 over and stroked .125 inch )

omg,loosen the converter and let that turbo eat

 

[michael evans]

Not good thinking 1.9 to 2.05 second if I remember right.

 

[michael evans]

So it the converter that is not letting it spool fast or is it only leaving at 2500 ?

 

[Mr.Spool]

Not good thinking 1.9 to 2.05 second if I remember right.

need a converter and boost leave the turbo alone.with seat time and traction should run low 10s/high 9s depending on weight and hook.the bb turbo change will spool faster but you need a looser converter period

 

[Mr.Spool]

So it the converter that is not letting it spool fast or is it only leaving at 2500 ?

thought you said 2500 stall?leaving at 2500rpm regardless its not going to 60ft

 

[Mr.Spool]

converter is a 2500 stall NLU.

not loose enough

 

[michael evans]

With the trans brake it will only stall to 2500 RPM but the boost will hit over 20 PSI.

No matter it leaves the line lazy and spools slow.

 

[michael evans]

So a looser converter will let it spool faster ?

 

[Mr.Spool]

With the trans brake it will only stall to 2500 RPM but the boost will hit over 20 PSI

no way your leaving at 20psi and going 2.0 60ft.yes looser will spool faster but also let the motor rpm faster as well

 

[michael evans]

No 20 PSI will blow the tires off.

 

[michael evans]

5 is about the Maximum

 

[Mr.Spool]

is there someone around you that works on or knows about the turbo buicks?maybe take a ride and see or log it and send it out or post up

 

[Mr.Spool]

5 is about the Maximum

sounds like its way to tight locking early and putting the car into wheel spin

 

[Mr.Spool]

No 20 PSI will blow the tires off.

ok so your leaving at 5psi and riding the turbo out of the hole?

 

[michael evans]

Need to make some more logs as I have other changes.

Most importantly changed the alternator pull so I went from 12.4 volts on the system to 14 volts.

When I got the car someone put an underdrive crank pulley on it but still had the stock pulley on the alternator.

 

[michael evans]

ok so your leaving at 5psi and riding the turbo out of the hole?

Yes

also changed the rear shock settings so traction should be better (have QA1)

 

[Mr.Spool]

Yes

ouch.you have to have power to 60ft leaving a 5 psi at 2500rpm and riding the rpm climb and boost climb is not the best way to drop a killer 60ft.

 

[Mr.Spool]

your driving it like a supercharged car.

 

[michael evans]

last log made.