Anyone with a Procharger D1SC on their 4V?

[D1SC_GT]

2004 Termi longblock with Mach 1 upper/lower. Im concerned about the low compression of the termi motors paired with a centri. My D1 with a 3.25 pulley made 16psi on my old 2V. Now Ive got the 4V and want to throw on an 18% OD crank with the 3.25 pulley on the 4V.

Will the motor be a turd until it makes boost or is the 3.25 + 18% OD make up for it?

 

[98 Saleen Cobra]

Put 4.10's in it and don't look back.. It'll be fine with the lower compression just gear it

 

[DSG2003Mach1]

not sure how high youre gonna spin the motor but I believe that would be overspinning the D1SC by a decent amount. If I remember when I was doing the math on my setup a 3.4 blower pulley and 12% OD crank would have put me over at 7k

you also might want to see how people are doing with belt slip using a blower pulley that small

 

[D1SC_GT]

It already has 4.10's

I had the 3.25 on the blower when I still had my 2V and experienced zero slip. The formula for head unit RPM is:

(Crank pulley size / Blower pulley size x step up ratio) x max engine rpm

So, 7.75 (18% OD) / 3.25 = 2.385
2.385 x 4.10 D1SC step-up) = 9.777
9.777 x 6200rpm = 60,616 blower rpm
D1SC max RPM = 62,000

 

[BIGBRAND0105]

I have a F1A on my cobra with a 4.25" pulley and making 620 rwhp and 490rwtq. Just switched over to 4.10's but having some belt slip issues in the process of switching over to GI Joes 8 rib kit with a carbinite coated blower pulley.

 

[Black*Death]

It already has 4.10's

I had the 3.25 on the blower when I still had my 2V and experienced zero slip. The formula for head unit RPM is:

(Crank pulley size / Blower pulley size x step up ratio) x max engine rpm

So, 7.75 (18% OD) / 3.25 = 2.385
2.385 x 4.10 D1SC step-up) = 9.777
9.777 x 6200rpm = 60,616 blower rpm
D1SC max RPM = 62,000

Why are you only going to 6200 RPMs? Isn't 6800 RPM the max on 4 valve engines?